diff --git a/android-scanner/build.gradle b/android-scanner/build.gradle
index 2721505..101a632 100644
--- a/android-scanner/build.gradle
+++ b/android-scanner/build.gradle
@@ -24,8 +24,13 @@ android {
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+
+        // Enabling multidex support.
+        multiDexEnabled true
     }
 
+
+
     buildTypes {
         debug {
             debuggable true
@@ -37,9 +42,17 @@ android {
     }
 }
 
+configurations.all {
+    resolutionStrategy.dependencySubstitution {
+        substitute module('org.glassfish.hk2.external:javax.inject:2.4.0-b34') with module('javax.inject:javax.inject:1')
+    }
+}
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
+//    compile fileTree(dir: 'libs', include: ['*.jar'])
+
+    compile project(':meerkat-common')
+    compile project(':scanner-api-common')
 
     compile 'com.android.support:appcompat-v7:25.0.1'
 //    compile 'com.android.support.constraint:constraint-layout:1.0.0-beta3'
@@ -48,13 +61,13 @@ dependencies {
     // Google protobufs
     compile 'com.google.protobuf:protobuf-java:3.+'
     // Retrofit
-    compile 'com.squareup.retrofit2:retrofit:2.1.0'
-    compile 'com.squareup.retrofit2:converter-protobuf:2.2.0'
+//    compile 'com.squareup.retrofit2:retrofit:2.1.0'
+//    compile 'com.squareup.retrofit2:converter-protobuf:2.2.0'
 
     testCompile 'junit:junit:4.12'
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
-        exclude group: 'com.android.support', module: 'support-annotations'
-    })
+//    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+//        exclude group: 'com.android.support', module: 'support-annotations'
+//    })
 
 }
 
diff --git a/android-scanner/src/main/java/RestClient/APIService.java b/android-scanner/src/main/java/RestClient/APIService.java
deleted file mode 100644
index 70f47e1..0000000
--- a/android-scanner/src/main/java/RestClient/APIService.java
+++ /dev/null
@@ -1,17 +0,0 @@
-package RestClient;
-
-import com.google.protobuf.BoolValue;
-
-import meerkat.protobuf.PollingStation;
-import static meerkat.rest.Constants.MEDIATYPE_PROTOBUF;
-
-import retrofit2.Call;
-import retrofit2.http.Body;
-import retrofit2.http.POST;
-
-public interface APIService {
-
-    @POST("/scan")
-    Call<BoolValue> sendScan(@Body PollingStation.ScannedData post);
-//    Call<PollingStation.ScannedData> sendScan(@Body PollingStation.ScannedData post);
-}
diff --git a/android-scanner/src/main/java/RestClient/ApiUtils.java b/android-scanner/src/main/java/RestClient/ApiUtils.java
deleted file mode 100644
index 0a163c5..0000000
--- a/android-scanner/src/main/java/RestClient/ApiUtils.java
+++ /dev/null
@@ -1,16 +0,0 @@
-package RestClient;
-
-public class ApiUtils {
-
-    private ApiUtils() {}
-    private static final String ADDRESS = "http://192.168.43.79";
-    private static final String SUB_ADDRESS = "";
-    private static final int PORT = 8080;
-
-//    public static final String BASE_URL = "http://jsonplaceholder.typicode.com/";
-    public static final String BASE_URL = ADDRESS + ":" + PORT + SUB_ADDRESS;
-    public static APIService getAPIService() {
-
-        return RetrofitClient.getClient(BASE_URL).create(APIService.class);
-    }
-}
\ No newline at end of file
diff --git a/android-scanner/src/main/java/RestClient/RetrofitClient.java b/android-scanner/src/main/java/RestClient/RetrofitClient.java
deleted file mode 100644
index e945772..0000000
--- a/android-scanner/src/main/java/RestClient/RetrofitClient.java
+++ /dev/null
@@ -1,19 +0,0 @@
-package RestClient;
-
-import retrofit2.Retrofit;
-import retrofit2.converter.protobuf.ProtoConverterFactory;
-
-public class RetrofitClient {
-
-    private static Retrofit retrofit = null;
-
-    public static Retrofit getClient(String baseUrl) {
-        if (retrofit==null) {
-            retrofit = new Retrofit.Builder()
-                    .baseUrl(baseUrl)
-                    .addConverterFactory(ProtoConverterFactory.create())
-                    .build();
-        }
-        return retrofit;
-    }
-}
\ No newline at end of file
diff --git a/android-scanner/src/main/java/com/meerkat/laura/fakescannerapp/MainActivity.java b/android-scanner/src/main/java/com/meerkat/laura/fakescannerapp/MainActivity.java
index dd00987..ec403c3 100644
--- a/android-scanner/src/main/java/com/meerkat/laura/fakescannerapp/MainActivity.java
+++ b/android-scanner/src/main/java/com/meerkat/laura/fakescannerapp/MainActivity.java
@@ -1,51 +1,33 @@
 package com.meerkat.laura.fakescannerapp;
 
+
 import android.content.Intent;
-import android.os.AsyncTask;
-import android.os.StrictMode;
-import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
 import android.util.Base64;
 import android.util.Log;
 import android.view.View;
 import android.widget.Button;
 import android.widget.TextView;
 import android.widget.Toast;
-
-import com.google.protobuf.BoolValue;
-import com.google.protobuf.ByteString;
 import com.google.protobuf.InvalidProtocolBufferException;
 import com.google.zxing.integration.android.IntentIntegrator;
 import com.google.zxing.integration.android.IntentResult;
-
-import java.io.BufferedOutputStream;
-import java.io.BufferedReader;
-import java.io.BufferedWriter;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.io.OutputStream;
-import java.io.OutputStreamWriter;
-import java.net.HttpURLConnection;
-import java.net.Socket;
-import java.net.URL;
-import java.nio.ByteBuffer;
-
-import javax.net.ssl.HttpsURLConnection;
-
-import RestClient.APIService;
-import RestClient.ApiUtils;
+import meerkat.pollingstation.ScannerClientAPI;
 import meerkat.protobuf.PollingStation;
-import retrofit2.Call;
-import retrofit2.Callback;
-import retrofit2.Response;
 
 
 public class MainActivity extends AppCompatActivity implements View.OnClickListener {
 
+    // TODO: Make this configurable
+    private static final String PSC_ADDRESS = "http://127.0.0.1/";
+    private static final String PSC_SUB_ADDRESS = "";
+    private static final String PSC_PATH = "/";
+    private static final int PSC_PORT = 8880;
+
     private Button scanBtn;
     private TextView formatTxt, contentTxt, responseTxt;
-
-    private APIService mAPIService;
+    ScannerClientAPI scannerClientAPI;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -57,7 +39,7 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
         contentTxt = (TextView)findViewById(R.id.scan_content);
         responseTxt = (TextView)findViewById(R.id.server_response);
 
-        mAPIService = ApiUtils.getAPIService();
+        scannerClientAPI = new ScannerClientAPI(PSC_ADDRESS, PSC_SUB_ADDRESS, PSC_PORT, PSC_PATH);
         scanBtn.setOnClickListener(this);
     }
 
@@ -96,24 +78,11 @@ public void sendPost(String scanContent) {
     //                .setChannel(ByteString.copyFrom(body))
     //                .build();
 
-            mAPIService.sendScan(scannedData).enqueue(new Callback<BoolValue>() {
-                @Override
-                public void onResponse(Call<BoolValue> call, Response<BoolValue> response) {
-
-                    if(response.isSuccessful()) {
-                        showResponse("response="+response.body().getValue());
-                        Log.i("MainActivity", "post submitted to API.");
-                    } else {
-                        showResponse("Error HTTP code="+response.code());
-                        Log.i("MainActivity", "post submitted to API but respnse with http error code.");
-                    }
-                }
-
-                @Override
-                public void onFailure(Call<BoolValue> call, Throwable t) {
-                    Log.e("MainActivity", "Unable to submit post to API.");
-                }
-            });
+            if (scannerClientAPI.sendScan(scannedData)) {
+                Log.i("MainActivity", "post submitted to API.");
+            } else {
+                Log.e("MainActivity", "Unable to submit post to API.");
+            }
         } catch (InvalidProtocolBufferException e) {
             e.printStackTrace();
         }
diff --git a/android-scanner/src/main/java/meerkat/pollingstation/PollingStationConstants.java b/android-scanner/src/main/java/meerkat/pollingstation/PollingStationConstants.java
deleted file mode 100644
index e55f749..0000000
--- a/android-scanner/src/main/java/meerkat/pollingstation/PollingStationConstants.java
+++ /dev/null
@@ -1,10 +0,0 @@
-package meerkat.pollingstation;
-
-public interface PollingStationConstants {
-
-    // Relative addresses for Scanner operations
-
-    public static final String POLLING_STATION_WEB_SCANNER_SCAN_PATH = "/scan";
-    public static final String POLLING_STATION_WEB_SCANNER_ERROR_PATH = "/error";
-
-}
diff --git a/android-scanner/src/main/java/meerkat/protobuf/BallotQuestionUIElementOuterClass.java b/android-scanner/src/main/java/meerkat/protobuf/BallotQuestionUIElementOuterClass.java
deleted file mode 100644
index a7006c1..0000000
--- a/android-scanner/src/main/java/meerkat/protobuf/BallotQuestionUIElementOuterClass.java
+++ /dev/null
@@ -1,5073 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: meerkat/BallotQuestionUIElement.proto
-
-package meerkat.protobuf;
-
-public final class BallotQuestionUIElementOuterClass {
-  private BallotQuestionUIElementOuterClass() {}
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistryLite registry) {
-  }
-
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistry registry) {
-    registerAllExtensions(
-        (com.google.protobuf.ExtensionRegistryLite) registry);
-  }
-  /**
-   * <pre>
-   * Enumeration that represents the available types of questions/answers that can be
-   * </pre>
-   *
-   * Protobuf enum {@code meerkat.ValueType}
-   */
-  public enum ValueType
-      implements com.google.protobuf.ProtocolMessageEnum {
-    /**
-     * <code>TEXT_TYPE = 0;</code>
-     */
-    TEXT_TYPE(0),
-    /**
-     * <code>AUDIO_TYPE = 1;</code>
-     */
-    AUDIO_TYPE(1),
-    /**
-     * <code>IMAGE_TYPE = 2;</code>
-     */
-    IMAGE_TYPE(2),
-    UNRECOGNIZED(-1),
-    ;
-
-    /**
-     * <code>TEXT_TYPE = 0;</code>
-     */
-    public static final int TEXT_TYPE_VALUE = 0;
-    /**
-     * <code>AUDIO_TYPE = 1;</code>
-     */
-    public static final int AUDIO_TYPE_VALUE = 1;
-    /**
-     * <code>IMAGE_TYPE = 2;</code>
-     */
-    public static final int IMAGE_TYPE_VALUE = 2;
-
-
-    public final int getNumber() {
-      if (this == UNRECOGNIZED) {
-        throw new java.lang.IllegalArgumentException(
-            "Can't get the number of an unknown enum value.");
-      }
-      return value;
-    }
-
-    /**
-     * @deprecated Use {@link #forNumber(int)} instead.
-     */
-    @java.lang.Deprecated
-    public static ValueType valueOf(int value) {
-      return forNumber(value);
-    }
-
-    public static ValueType forNumber(int value) {
-      switch (value) {
-        case 0: return TEXT_TYPE;
-        case 1: return AUDIO_TYPE;
-        case 2: return IMAGE_TYPE;
-        default: return null;
-      }
-    }
-
-    public static com.google.protobuf.Internal.EnumLiteMap<ValueType>
-        internalGetValueMap() {
-      return internalValueMap;
-    }
-    private static final com.google.protobuf.Internal.EnumLiteMap<
-        ValueType> internalValueMap =
-          new com.google.protobuf.Internal.EnumLiteMap<ValueType>() {
-            public ValueType findValueByNumber(int number) {
-              return ValueType.forNumber(number);
-            }
-          };
-
-    public final com.google.protobuf.Descriptors.EnumValueDescriptor
-        getValueDescriptor() {
-      return getDescriptor().getValues().get(ordinal());
-    }
-    public final com.google.protobuf.Descriptors.EnumDescriptor
-        getDescriptorForType() {
-      return getDescriptor();
-    }
-    public static final com.google.protobuf.Descriptors.EnumDescriptor
-        getDescriptor() {
-      return meerkat.protobuf.BallotQuestionUIElementOuterClass.getDescriptor().getEnumTypes().get(0);
-    }
-
-    private static final ValueType[] VALUES = values();
-
-    public static ValueType valueOf(
-        com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
-      if (desc.getType() != getDescriptor()) {
-        throw new java.lang.IllegalArgumentException(
-          "EnumValueDescriptor is not for this type.");
-      }
-      if (desc.getIndex() == -1) {
-        return UNRECOGNIZED;
-      }
-      return VALUES[desc.getIndex()];
-    }
-
-    private final int value;
-
-    private ValueType(int value) {
-      this.value = value;
-    }
-
-    // @@protoc_insertion_point(enum_scope:meerkat.ValueType)
-  }
-
-  public interface UIAnswerOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:meerkat.UIAnswer)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <code>bytes answer = 1;</code>
-     */
-    com.google.protobuf.ByteString getAnswer();
-
-    /**
-     * <code>string description = 2;</code>
-     */
-    java.lang.String getDescription();
-    /**
-     * <code>string description = 2;</code>
-     */
-    com.google.protobuf.ByteString
-        getDescriptionBytes();
-  }
-  /**
-   * <pre>
-   * Message that represent single answer for given question
-   * </pre>
-   *
-   * Protobuf type {@code meerkat.UIAnswer}
-   */
-  public  static final class UIAnswer extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:meerkat.UIAnswer)
-      UIAnswerOrBuilder {
-    // Use UIAnswer.newBuilder() to construct.
-    private UIAnswer(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private UIAnswer() {
-      answer_ = com.google.protobuf.ByteString.EMPTY;
-      description_ = "";
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return com.google.protobuf.UnknownFieldSet.getDefaultInstance();
-    }
-    private UIAnswer(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!input.skipField(tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 10: {
-
-              answer_ = input.readBytes();
-              break;
-            }
-            case 18: {
-              java.lang.String s = input.readStringRequireUtf8();
-
-              description_ = s;
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return meerkat.protobuf.BallotQuestionUIElementOuterClass.internal_static_meerkat_UIAnswer_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return meerkat.protobuf.BallotQuestionUIElementOuterClass.internal_static_meerkat_UIAnswer_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswer.class, meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswer.Builder.class);
-    }
-
-    public static final int ANSWER_FIELD_NUMBER = 1;
-    private com.google.protobuf.ByteString answer_;
-    /**
-     * <code>bytes answer = 1;</code>
-     */
-    public com.google.protobuf.ByteString getAnswer() {
-      return answer_;
-    }
-
-    public static final int DESCRIPTION_FIELD_NUMBER = 2;
-    private volatile java.lang.Object description_;
-    /**
-     * <code>string description = 2;</code>
-     */
-    public java.lang.String getDescription() {
-      java.lang.Object ref = description_;
-      if (ref instanceof java.lang.String) {
-        return (java.lang.String) ref;
-      } else {
-        com.google.protobuf.ByteString bs = 
-            (com.google.protobuf.ByteString) ref;
-        java.lang.String s = bs.toStringUtf8();
-        description_ = s;
-        return s;
-      }
-    }
-    /**
-     * <code>string description = 2;</code>
-     */
-    public com.google.protobuf.ByteString
-        getDescriptionBytes() {
-      java.lang.Object ref = description_;
-      if (ref instanceof java.lang.String) {
-        com.google.protobuf.ByteString b = 
-            com.google.protobuf.ByteString.copyFromUtf8(
-                (java.lang.String) ref);
-        description_ = b;
-        return b;
-      } else {
-        return (com.google.protobuf.ByteString) ref;
-      }
-    }
-
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized == 1) return true;
-      if (isInitialized == 0) return false;
-
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      if (!answer_.isEmpty()) {
-        output.writeBytes(1, answer_);
-      }
-      if (!getDescriptionBytes().isEmpty()) {
-        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, description_);
-      }
-    }
-
-    public int getSerializedSize() {
-      int size = memoizedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (!answer_.isEmpty()) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(1, answer_);
-      }
-      if (!getDescriptionBytes().isEmpty()) {
-        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, description_);
-      }
-      memoizedSize = size;
-      return size;
-    }
-
-    private static final long serialVersionUID = 0L;
-    @java.lang.Override
-    public boolean equals(final java.lang.Object obj) {
-      if (obj == this) {
-       return true;
-      }
-      if (!(obj instanceof meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswer)) {
-        return super.equals(obj);
-      }
-      meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswer other = (meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswer) obj;
-
-      boolean result = true;
-      result = result && getAnswer()
-          .equals(other.getAnswer());
-      result = result && getDescription()
-          .equals(other.getDescription());
-      return result;
-    }
-
-    @java.lang.Override
-    public int hashCode() {
-      if (memoizedHashCode != 0) {
-        return memoizedHashCode;
-      }
-      int hash = 41;
-      hash = (19 * hash) + getDescriptor().hashCode();
-      hash = (37 * hash) + ANSWER_FIELD_NUMBER;
-      hash = (53 * hash) + getAnswer().hashCode();
-      hash = (37 * hash) + DESCRIPTION_FIELD_NUMBER;
-      hash = (53 * hash) + getDescription().hashCode();
-      hash = (29 * hash) + unknownFields.hashCode();
-      memoizedHashCode = hash;
-      return hash;
-    }
-
-    public static meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswer parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswer parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswer parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswer parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswer parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswer parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswer parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input);
-    }
-    public static meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswer parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
-    }
-    public static meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswer parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input);
-    }
-    public static meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswer parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return com.google.protobuf.GeneratedMessageV3
-          .parseWithIOException(PARSER, input, extensionRegistry);
-    }
-
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder() {
-      return DEFAULT_INSTANCE.toBuilder();
-    }
-    public static Builder newBuilder(meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswer prototype) {
-      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() {
-      return this == DEFAULT_INSTANCE
-          ? new Builder() : new Builder().mergeFrom(this);
-    }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
-    /**
-     * <pre>
-     * Message that represent single answer for given question
-     * </pre>
-     *
-     * Protobuf type {@code meerkat.UIAnswer}
-     */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:meerkat.UIAnswer)
-        meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswerOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return meerkat.protobuf.BallotQuestionUIElementOuterClass.internal_static_meerkat_UIAnswer_descriptor;
-      }
-
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-       */
-      public Builder removeAnswers(int index) {
-        if (answersBuilder_ == null) {
-          ensureAnswersIsMutable();
-          answers_.remove(index);
-          onChanged();
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-          answersBuilder_.remove(index);
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-      public meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswersOrBuilder getAnswersOrBuilder() {
-        if (answersBuilder_ != null) {
-          return answersBuilder_.getMessageOrBuilder();
-        } else {
-          return answers_ == null ?
-              meerkat.protobuf.BallotQuestionUIElementOuterClass.UIAnswers.getDefaultInstance() : answers_;
-        }
-      }
-      /**
-       * <pre>
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-       * </pre>
-       *
-       * <code>.meerkat.UIAnswers answers = 1;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
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-          getAnswersFieldBuilder() {
-        if (answersBuilder_ == null) {
-          answersBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
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-          answers_ = null;
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-        return answersBuilder_;
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-
-      private boolean randomizeListOrder_ ;
-      /**
-       * <pre>
-       * Should those answers locations should be randomized before shown to the voter ?
-       * </pre>
-       *
-       * <code>bool RandomizeListOrder = 2;</code>
-       */
-      public boolean getRandomizeListOrder() {
-        return randomizeListOrder_;
-      }
-      /**
-       * <pre>
-       * Should those answers locations should be randomized before shown to the voter ?
-       * </pre>
-       *
-       * <code>bool RandomizeListOrder = 2;</code>
-       */
-      public Builder setRandomizeListOrder(boolean value) {
-        
-        randomizeListOrder_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * Should those answers locations should be randomized before shown to the voter ?
-       * </pre>
-       *
-       * <code>bool RandomizeListOrder = 2;</code>
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-      public Builder clearRandomizeListOrder() {
-        
-        randomizeListOrder_ = false;
-        onChanged();
-        return this;
-      }
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-      /**
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-       *
-       * <code>.meerkat.UIQuestion question = 3;</code>
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-      public java.util.List<meerkat.protobuf.BallotQuestionUIElementOuterClass.BallotQuestionUIElement> getQuestionsList() {
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-          return questionsBuilder_.getMessage(index);
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-      /**
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-        if (questionsBuilder_ == null) {
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-        } else {
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-        return this;
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-      /**
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-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestionUIElement questions = 1;</code>
-       */
-      public Builder addQuestions(meerkat.protobuf.BallotQuestionUIElementOuterClass.BallotQuestionUIElement value) {
-        if (questionsBuilder_ == null) {
-          if (value == null) {
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-        } else {
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-        return this;
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-      /**
-       * <pre>
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-       *
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-          if (value == null) {
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-       *
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-       * <pre>
-       * for easy storing all wanted questions
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestionUIElement questions = 1;</code>
-       */
-      public Builder clearQuestions() {
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-      /**
-       * <pre>
-       * for easy storing all wanted questions
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestionUIElement questions = 1;</code>
-       */
-      public Builder removeQuestions(int index) {
-        if (questionsBuilder_ == null) {
-          ensureQuestionsIsMutable();
-          questions_.remove(index);
-          onChanged();
-        } else {
-          questionsBuilder_.remove(index);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * for easy storing all wanted questions
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestionUIElement questions = 1;</code>
-       */
-      public meerkat.protobuf.BallotQuestionUIElementOuterClass.BallotQuestionUIElement.Builder getQuestionsBuilder(
-          int index) {
-        return getQuestionsFieldBuilder().getBuilder(index);
-      }
-      /**
-       * <pre>
-       * for easy storing all wanted questions
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestionUIElement questions = 1;</code>
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-      public meerkat.protobuf.BallotQuestionUIElementOuterClass.BallotQuestionUIElementOrBuilder getQuestionsOrBuilder(
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-          return questions_.get(index);  } else {
-          return questionsBuilder_.getMessageOrBuilder(index);
-        }
-      }
-      /**
-       * <pre>
-       * for easy storing all wanted questions
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestionUIElement questions = 1;</code>
-       */
-      public java.util.List<? extends meerkat.protobuf.BallotQuestionUIElementOuterClass.BallotQuestionUIElementOrBuilder> 
-           getQuestionsOrBuilderList() {
-        if (questionsBuilder_ != null) {
-          return questionsBuilder_.getMessageOrBuilderList();
-        } else {
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-        }
-      }
-      /**
-       * <pre>
-       * for easy storing all wanted questions
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestionUIElement questions = 1;</code>
-       */
-      public meerkat.protobuf.BallotQuestionUIElementOuterClass.BallotQuestionUIElement.Builder addQuestionsBuilder() {
-        return getQuestionsFieldBuilder().addBuilder(
-            meerkat.protobuf.BallotQuestionUIElementOuterClass.BallotQuestionUIElement.getDefaultInstance());
-      }
-      /**
-       * <pre>
-       * for easy storing all wanted questions
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestionUIElement questions = 1;</code>
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-      public meerkat.protobuf.BallotQuestionUIElementOuterClass.BallotQuestionUIElement.Builder addQuestionsBuilder(
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-      }
-      /**
-       * <pre>
-       * for easy storing all wanted questions
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestionUIElement questions = 1;</code>
-       */
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-    static {
-      DEFAULT_INSTANCE = new meerkat.protobuf.BallotQuestionUIElementOuterClass.BallotQuestionsUIElements();
-    }
-
-    public static meerkat.protobuf.BallotQuestionUIElementOuterClass.BallotQuestionsUIElements getDefaultInstance() {
-      return DEFAULT_INSTANCE;
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-    private static final com.google.protobuf.Parser<BallotQuestionsUIElements>
-        PARSER = new com.google.protobuf.AbstractParser<BallotQuestionsUIElements>() {
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-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
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-          return new BallotQuestionsUIElements(input, extensionRegistry);
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-    public static com.google.protobuf.Parser<BallotQuestionsUIElements> parser() {
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-    @java.lang.Override
-    public com.google.protobuf.Parser<BallotQuestionsUIElements> getParserForType() {
-      return PARSER;
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-
-    public meerkat.protobuf.BallotQuestionUIElementOuterClass.BallotQuestionsUIElements getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
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diff --git a/android-scanner/src/main/java/meerkat/protobuf/BulletinBoardAPI.java b/android-scanner/src/main/java/meerkat/protobuf/BulletinBoardAPI.java
deleted file mode 100644
index d26e3a0..0000000
--- a/android-scanner/src/main/java/meerkat/protobuf/BulletinBoardAPI.java
+++ /dev/null
@@ -1,14679 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: meerkat/BulletinBoardAPI.proto
-
-package meerkat.protobuf;
-
-public final class BulletinBoardAPI {
-  private BulletinBoardAPI() {}
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistryLite registry) {
-  }
-
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistry registry) {
-    registerAllExtensions(
-        (com.google.protobuf.ExtensionRegistryLite) registry);
-  }
-  /**
-   * Protobuf enum {@code meerkat.FilterType}
-   */
-  public enum FilterType
-      implements com.google.protobuf.ProtocolMessageEnum {
-    /**
-     * <pre>
-     * Match exact message ID
-     * </pre>
-     *
-     * <code>MSG_ID = 0;</code>
-     */
-    MSG_ID(0),
-    /**
-     * <pre>
-     * Match exact entry number in database (chronological)
-     * </pre>
-     *
-     * <code>EXACT_ENTRY = 1;</code>
-     */
-    EXACT_ENTRY(1),
-    /**
-     * <pre>
-     * Find all entries in database up to specified entry number (chronological)
-     * </pre>
-     *
-     * <code>MAX_ENTRY = 2;</code>
-     */
-    MAX_ENTRY(2),
-    /**
-     * <pre>
-     * Find all entries in database starting from specified entry number (chronological)
-     * </pre>
-     *
-     * <code>MIN_ENTRY = 3;</code>
-     */
-    MIN_ENTRY(3),
-    /**
-     * <pre>
-     * Find all entries in database that correspond to specific signature (signer)
-     * </pre>
-     *
-     * <code>SIGNER_ID = 4;</code>
-     */
-    SIGNER_ID(4),
-    /**
-     * <pre>
-     * Find all entries in database that have a specific tag
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-        return meerkat.protobuf.BulletinBoardAPI.internal_static_meerkat_SyncQuery_descriptor;
-      }
-
-      public meerkat.protobuf.BulletinBoardAPI.SyncQuery getDefaultInstanceForType() {
-        return meerkat.protobuf.BulletinBoardAPI.SyncQuery.getDefaultInstance();
-      }
-
-      public meerkat.protobuf.BulletinBoardAPI.SyncQuery build() {
-        meerkat.protobuf.BulletinBoardAPI.SyncQuery result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
-        }
-        return result;
-      }
-
-      public meerkat.protobuf.BulletinBoardAPI.SyncQuery buildPartial() {
-        meerkat.protobuf.BulletinBoardAPI.SyncQuery result = new meerkat.protobuf.BulletinBoardAPI.SyncQuery(this);
-        int from_bitField0_ = bitField0_;
-        int to_bitField0_ = 0;
-        if (filterListBuilder_ == null) {
-          result.filterList_ = filterList_;
-        } else {
-          result.filterList_ = filterListBuilder_.build();
-        }
-        if (queryBuilder_ == null) {
-          if (((bitField0_ & 0x00000002) == 0x00000002)) {
-            query_ = java.util.Collections.unmodifiableList(query_);
-            bitField0_ = (bitField0_ & ~0x00000002);
-          }
-          result.query_ = query_;
-        } else {
-          result.query_ = queryBuilder_.build();
-        }
-        result.bitField0_ = to_bitField0_;
-        onBuilt();
-        return result;
-      }
-
-      public Builder clone() {
-        return (Builder) super.clone();
-      }
-      public Builder setField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          Object value) {
-        return (Builder) super.setField(field, value);
-      }
-      public Builder clearField(
-          com.google.protobuf.Descriptors.FieldDescriptor field) {
-        return (Builder) super.clearField(field);
-      }
-      public Builder clearOneof(
-          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
-        return (Builder) super.clearOneof(oneof);
-      }
-      public Builder setRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          int index, Object value) {
-        return (Builder) super.setRepeatedField(field, index, value);
-      }
-      public Builder addRepeatedField(
-          com.google.protobuf.Descriptors.FieldDescriptor field,
-          Object value) {
-        return (Builder) super.addRepeatedField(field, value);
-      }
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof meerkat.protobuf.BulletinBoardAPI.SyncQuery) {
-          return mergeFrom((meerkat.protobuf.BulletinBoardAPI.SyncQuery)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
-
-      public Builder mergeFrom(meerkat.protobuf.BulletinBoardAPI.SyncQuery other) {
-        if (other == meerkat.protobuf.BulletinBoardAPI.SyncQuery.getDefaultInstance()) return this;
-        if (other.hasFilterList()) {
-          mergeFilterList(other.getFilterList());
-        }
-        if (queryBuilder_ == null) {
-          if (!other.query_.isEmpty()) {
-            if (query_.isEmpty()) {
-              query_ = other.query_;
-              bitField0_ = (bitField0_ & ~0x00000002);
-            } else {
-              ensureQueryIsMutable();
-              query_.addAll(other.query_);
-            }
-            onChanged();
-          }
-        } else {
-          if (!other.query_.isEmpty()) {
-            if (queryBuilder_.isEmpty()) {
-              queryBuilder_.dispose();
-              queryBuilder_ = null;
-              query_ = other.query_;
-              bitField0_ = (bitField0_ & ~0x00000002);
-              queryBuilder_ = 
-                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders ?
-                   getQueryFieldBuilder() : null;
-            } else {
-              queryBuilder_.addAllMessages(other.query_);
-            }
-          }
-        }
-        onChanged();
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        meerkat.protobuf.BulletinBoardAPI.SyncQuery parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (meerkat.protobuf.BulletinBoardAPI.SyncQuery) e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-      private int bitField0_;
-
-      private meerkat.protobuf.BulletinBoardAPI.MessageFilterList filterList_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          meerkat.protobuf.BulletinBoardAPI.MessageFilterList, meerkat.protobuf.BulletinBoardAPI.MessageFilterList.Builder, meerkat.protobuf.BulletinBoardAPI.MessageFilterListOrBuilder> filterListBuilder_;
-      /**
-       * <code>.meerkat.MessageFilterList filterList = 1;</code>
-       */
-      public boolean hasFilterList() {
-        return filterListBuilder_ != null || filterList_ != null;
-      }
-      /**
-       * <code>.meerkat.MessageFilterList filterList = 1;</code>
-       */
-      public meerkat.protobuf.BulletinBoardAPI.MessageFilterList getFilterList() {
-        if (filterListBuilder_ == null) {
-          return filterList_ == null ? meerkat.protobuf.BulletinBoardAPI.MessageFilterList.getDefaultInstance() : filterList_;
-        } else {
-          return filterListBuilder_.getMessage();
-        }
-      }
-      /**
-       * <code>.meerkat.MessageFilterList filterList = 1;</code>
-       */
-      public Builder setFilterList(meerkat.protobuf.BulletinBoardAPI.MessageFilterList value) {
-        if (filterListBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          filterList_ = value;
-          onChanged();
-        } else {
-          filterListBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <code>.meerkat.MessageFilterList filterList = 1;</code>
-       */
-      public Builder setFilterList(
-          meerkat.protobuf.BulletinBoardAPI.MessageFilterList.Builder builderForValue) {
-        if (filterListBuilder_ == null) {
-          filterList_ = builderForValue.build();
-          onChanged();
-        } else {
-          filterListBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <code>.meerkat.MessageFilterList filterList = 1;</code>
-       */
-      public Builder mergeFilterList(meerkat.protobuf.BulletinBoardAPI.MessageFilterList value) {
-        if (filterListBuilder_ == null) {
-          if (filterList_ != null) {
-            filterList_ =
-              meerkat.protobuf.BulletinBoardAPI.MessageFilterList.newBuilder(filterList_).mergeFrom(value).buildPartial();
-          } else {
-            filterList_ = value;
-          }
-          onChanged();
-        } else {
-          filterListBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <code>.meerkat.MessageFilterList filterList = 1;</code>
-       */
-      public Builder clearFilterList() {
-        if (filterListBuilder_ == null) {
-          filterList_ = null;
-          onChanged();
-        } else {
-          filterList_ = null;
-          filterListBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <code>.meerkat.MessageFilterList filterList = 1;</code>
-       */
-      public meerkat.protobuf.BulletinBoardAPI.MessageFilterList.Builder getFilterListBuilder() {
-        
-        onChanged();
-        return getFilterListFieldBuilder().getBuilder();
-      }
-      /**
-       * <code>.meerkat.MessageFilterList filterList = 1;</code>
-       */
-      public meerkat.protobuf.BulletinBoardAPI.MessageFilterListOrBuilder getFilterListOrBuilder() {
-        if (filterListBuilder_ != null) {
-          return filterListBuilder_.getMessageOrBuilder();
-        } else {
-          return filterList_ == null ?
-              meerkat.protobuf.BulletinBoardAPI.MessageFilterList.getDefaultInstance() : filterList_;
-        }
-      }
-      /**
-       * <code>.meerkat.MessageFilterList filterList = 1;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          meerkat.protobuf.BulletinBoardAPI.MessageFilterList, meerkat.protobuf.BulletinBoardAPI.MessageFilterList.Builder, meerkat.protobuf.BulletinBoardAPI.MessageFilterListOrBuilder> 
-          getFilterListFieldBuilder() {
-        if (filterListBuilder_ == null) {
-          filterListBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              meerkat.protobuf.BulletinBoardAPI.MessageFilterList, meerkat.protobuf.BulletinBoardAPI.MessageFilterList.Builder, meerkat.protobuf.BulletinBoardAPI.MessageFilterListOrBuilder>(
-                  getFilterList(),
-                  getParentForChildren(),
-                  isClean());
-          filterList_ = null;
-        }
-        return filterListBuilder_;
-      }
-
-      private java.util.List<meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery> query_ =
-        java.util.Collections.emptyList();
-      private void ensureQueryIsMutable() {
-        if (!((bitField0_ & 0x00000002) == 0x00000002)) {
-          query_ = new java.util.ArrayList<meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery>(query_);
-          bitField0_ |= 0x00000002;
-         }
-      }
-
-      private com.google.protobuf.RepeatedFieldBuilderV3<
-          meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery, meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery.Builder, meerkat.protobuf.BulletinBoardAPI.SingleSyncQueryOrBuilder> queryBuilder_;
-
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public java.util.List<meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery> getQueryList() {
-        if (queryBuilder_ == null) {
-          return java.util.Collections.unmodifiableList(query_);
-        } else {
-          return queryBuilder_.getMessageList();
-        }
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public int getQueryCount() {
-        if (queryBuilder_ == null) {
-          return query_.size();
-        } else {
-          return queryBuilder_.getCount();
-        }
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery getQuery(int index) {
-        if (queryBuilder_ == null) {
-          return query_.get(index);
-        } else {
-          return queryBuilder_.getMessage(index);
-        }
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public Builder setQuery(
-          int index, meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery value) {
-        if (queryBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureQueryIsMutable();
-          query_.set(index, value);
-          onChanged();
-        } else {
-          queryBuilder_.setMessage(index, value);
-        }
-        return this;
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public Builder setQuery(
-          int index, meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery.Builder builderForValue) {
-        if (queryBuilder_ == null) {
-          ensureQueryIsMutable();
-          query_.set(index, builderForValue.build());
-          onChanged();
-        } else {
-          queryBuilder_.setMessage(index, builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public Builder addQuery(meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery value) {
-        if (queryBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureQueryIsMutable();
-          query_.add(value);
-          onChanged();
-        } else {
-          queryBuilder_.addMessage(value);
-        }
-        return this;
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public Builder addQuery(
-          int index, meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery value) {
-        if (queryBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureQueryIsMutable();
-          query_.add(index, value);
-          onChanged();
-        } else {
-          queryBuilder_.addMessage(index, value);
-        }
-        return this;
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public Builder addQuery(
-          meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery.Builder builderForValue) {
-        if (queryBuilder_ == null) {
-          ensureQueryIsMutable();
-          query_.add(builderForValue.build());
-          onChanged();
-        } else {
-          queryBuilder_.addMessage(builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public Builder addQuery(
-          int index, meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery.Builder builderForValue) {
-        if (queryBuilder_ == null) {
-          ensureQueryIsMutable();
-          query_.add(index, builderForValue.build());
-          onChanged();
-        } else {
-          queryBuilder_.addMessage(index, builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public Builder addAllQuery(
-          java.lang.Iterable<? extends meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery> values) {
-        if (queryBuilder_ == null) {
-          ensureQueryIsMutable();
-          com.google.protobuf.AbstractMessageLite.Builder.addAll(
-              values, query_);
-          onChanged();
-        } else {
-          queryBuilder_.addAllMessages(values);
-        }
-        return this;
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public Builder clearQuery() {
-        if (queryBuilder_ == null) {
-          query_ = java.util.Collections.emptyList();
-          bitField0_ = (bitField0_ & ~0x00000002);
-          onChanged();
-        } else {
-          queryBuilder_.clear();
-        }
-        return this;
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public Builder removeQuery(int index) {
-        if (queryBuilder_ == null) {
-          ensureQueryIsMutable();
-          query_.remove(index);
-          onChanged();
-        } else {
-          queryBuilder_.remove(index);
-        }
-        return this;
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery.Builder getQueryBuilder(
-          int index) {
-        return getQueryFieldBuilder().getBuilder(index);
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public meerkat.protobuf.BulletinBoardAPI.SingleSyncQueryOrBuilder getQueryOrBuilder(
-          int index) {
-        if (queryBuilder_ == null) {
-          return query_.get(index);  } else {
-          return queryBuilder_.getMessageOrBuilder(index);
-        }
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public java.util.List<? extends meerkat.protobuf.BulletinBoardAPI.SingleSyncQueryOrBuilder> 
-           getQueryOrBuilderList() {
-        if (queryBuilder_ != null) {
-          return queryBuilder_.getMessageOrBuilderList();
-        } else {
-          return java.util.Collections.unmodifiableList(query_);
-        }
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery.Builder addQueryBuilder() {
-        return getQueryFieldBuilder().addBuilder(
-            meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery.getDefaultInstance());
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery.Builder addQueryBuilder(
-          int index) {
-        return getQueryFieldBuilder().addBuilder(
-            index, meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery.getDefaultInstance());
-      }
-      /**
-       * <code>repeated .meerkat.SingleSyncQuery query = 2;</code>
-       */
-      public java.util.List<meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery.Builder> 
-           getQueryBuilderList() {
-        return getQueryFieldBuilder().getBuilderList();
-      }
-      private com.google.protobuf.RepeatedFieldBuilderV3<
-          meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery, meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery.Builder, meerkat.protobuf.BulletinBoardAPI.SingleSyncQueryOrBuilder> 
-          getQueryFieldBuilder() {
-        if (queryBuilder_ == null) {
-          queryBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
-              meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery, meerkat.protobuf.BulletinBoardAPI.SingleSyncQuery.Builder, meerkat.protobuf.BulletinBoardAPI.SingleSyncQueryOrBuilder>(
-                  query_,
-                  ((bitField0_ & 0x00000002) == 0x00000002),
-                  getParentForChildren(),
-                  isClean());
-          query_ = null;
-        }
-        return queryBuilder_;
-      }
-      public final Builder setUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return this;
-      }
-
-      public final Builder mergeUnknownFields(
-          final com.google.protobuf.UnknownFieldSet unknownFields) {
-        return this;
-      }
-
-
-      // @@protoc_insertion_point(builder_scope:meerkat.SyncQuery)
-    }
-
-    // @@protoc_insertion_point(class_scope:meerkat.SyncQuery)
-    private static final meerkat.protobuf.BulletinBoardAPI.SyncQuery DEFAULT_INSTANCE;
-    static {
-      DEFAULT_INSTANCE = new meerkat.protobuf.BulletinBoardAPI.SyncQuery();
-    }
-
-    public static meerkat.protobuf.BulletinBoardAPI.SyncQuery getDefaultInstance() {
-      return DEFAULT_INSTANCE;
-    }
-
-    private static final com.google.protobuf.Parser<SyncQuery>
-        PARSER = new com.google.protobuf.AbstractParser<SyncQuery>() {
-      public SyncQuery parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-          return new SyncQuery(input, extensionRegistry);
-      }
-    };
-
-    public static com.google.protobuf.Parser<SyncQuery> parser() {
-      return PARSER;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<SyncQuery> getParserForType() {
-      return PARSER;
-    }
-
-    public meerkat.protobuf.BulletinBoardAPI.SyncQuery getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
-    }
-
-  }
-
-  public interface GenerateSyncQueryParamsOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:meerkat.GenerateSyncQueryParams)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <pre>
-     * Defines the set of messages required
-     * </pre>
-     *
-     * <code>.meerkat.MessageFilterList filterList = 1;</code>
-     */
-    boolean hasFilterList();
-    /**
-     * <pre>
-     * Defines the set of messages required
-     * </pre>
-     *
-     * <code>.meerkat.MessageFilterList filterList = 1;</code>
-     */
-    meerkat.protobuf.BulletinBoardAPI.MessageFilterList getFilterList();
-    /**
-     * <pre>
-     * Defines the set of messages required
-     * </pre>
-     *
-     * <code>.meerkat.MessageFilterList filterList = 1;</code>
-     */
-    meerkat.protobuf.BulletinBoardAPI.MessageFilterListOrBuilder getFilterListOrBuilder();
-
-    /**
-     * <pre>
-     * Defines the locations in the list of messages to calculate single sync queries for
-     * The values should be between 0.0 and 1.0 and define the location in fractions of the size of the message set
-     * </pre>
-     *
-     * <code>repeated float breakpointList = 2;</code>
-     */
-    java.util.List<java.lang.Float> getBreakpointListList();
-    /**
-     * <pre>
-     * Defines the locations in the list of messages to calculate single sync queries for
-     * The values should be between 0.0 and 1.0 and define the location in fractions of the size of the message set
-     * </pre>
-     *
-     * <code>repeated float breakpointList = 2;</code>
-     */
-    int getBreakpointListCount();
-    /**
-     * <pre>
-     * Defines the locations in the list of messages to calculate single sync queries for
-     * The values should be between 0.0 and 1.0 and define the location in fractions of the size of the message set
-     * </pre>
-     *
-     * <code>repeated float breakpointList = 2;</code>
-     */
-    float getBreakpointList(int index);
-  }
-  /**
-   * <pre>
-   * This message defines the required information for generation of a SyncQuery instance by the server
-   * </pre>
-   *
-   * Protobuf type {@code meerkat.GenerateSyncQueryParams}
-   */
-  public  static final class GenerateSyncQueryParams extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:meerkat.GenerateSyncQueryParams)
-      GenerateSyncQueryParamsOrBuilder {
-    // Use GenerateSyncQueryParams.newBuilder() to construct.
-    private GenerateSyncQueryParams(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-      super(builder);
-    }
-    private GenerateSyncQueryParams() {
-      breakpointList_ = java.util.Collections.emptyList();
-    }
-
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-    getUnknownFields() {
-      return com.google.protobuf.UnknownFieldSet.getDefaultInstance();
-    }
-    private GenerateSyncQueryParams(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      this();
-      int mutable_bitField0_ = 0;
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!input.skipField(tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 10: {
-              meerkat.protobuf.BulletinBoardAPI.MessageFilterList.Builder subBuilder = null;
-              if (filterList_ != null) {
-                subBuilder = filterList_.toBuilder();
-              }
-              filterList_ = input.readMessage(meerkat.protobuf.BulletinBoardAPI.MessageFilterList.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(filterList_);
-                filterList_ = subBuilder.buildPartial();
-              }
-
-              break;
-            }
-            case 21: {
-              if (!((mutable_bitField0_ & 0x00000002) == 0x00000002)) {
-                breakpointList_ = new java.util.ArrayList<java.lang.Float>();
-                mutable_bitField0_ |= 0x00000002;
-              }
-              breakpointList_.add(input.readFloat());
-              break;
-            }
-            case 18: {
-              int length = input.readRawVarint32();
-              int limit = input.pushLimit(length);
-              if (!((mutable_bitField0_ & 0x00000002) == 0x00000002) && input.getBytesUntilLimit() > 0) {
-                breakpointList_ = new java.util.ArrayList<java.lang.Float>();
-                mutable_bitField0_ |= 0x00000002;
-              }
-              while (input.getBytesUntilLimit() > 0) {
-                breakpointList_.add(input.readFloat());
-              }
-              input.popLimit(limit);
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e).setUnfinishedMessage(this);
-      } finally {
-        if (((mutable_bitField0_ & 0x00000002) == 0x00000002)) {
-          breakpointList_ = java.util.Collections.unmodifiableList(breakpointList_);
-        }
-        makeExtensionsImmutable();
-      }
-    }
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deleted file mode 100644
index 7acb672..0000000
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diff --git a/android-scanner/src/main/java/meerkat/protobuf/Crypto.java b/android-scanner/src/main/java/meerkat/protobuf/Crypto.java
deleted file mode 100644
index 5120ba2..0000000
--- a/android-scanner/src/main/java/meerkat/protobuf/Crypto.java
+++ /dev/null
@@ -1,3611 +0,0 @@
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-          fourthBuilder_ = null;
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diff --git a/android-scanner/src/main/java/meerkat/protobuf/PollingStation.java b/android-scanner/src/main/java/meerkat/protobuf/PollingStation.java
deleted file mode 100644
index 6dee487..0000000
--- a/android-scanner/src/main/java/meerkat/protobuf/PollingStation.java
+++ /dev/null
@@ -1,1217 +0,0 @@
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diff --git a/android-scanner/src/main/java/meerkat/protobuf/Voting.java b/android-scanner/src/main/java/meerkat/protobuf/Voting.java
deleted file mode 100644
index 0201180..0000000
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-        if (other.hasEncryptedBallot()) {
-          mergeEncryptedBallot(other.getEncryptedBallot());
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-      /**
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-      public Builder setEncryptedBallot(meerkat.protobuf.Voting.EncryptedBallot value) {
-        if (encryptedBallotBuilder_ == null) {
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-        return this;
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-      public Builder setEncryptedBallot(
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-          encryptedBallot_ = null;
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-        onChanged();
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-    /**
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-    /**
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-    /**
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-    /**
-     * <code>.meerkat.EncryptionRandomness encryption_randomness = 2;</code>
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-     *
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-       * Addresses of all Bulletin Board Servers
-       * </pre>
-       *
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-      /**
-       * <pre>
-       * Addresses of all Bulletin Board Servers
-       * </pre>
-       *
-       * <code>repeated string bulletinBoardAddress = 1;</code>
-       */
-      public java.lang.String getBulletinBoardAddress(int index) {
-        return bulletinBoardAddress_.get(index);
-      }
-      /**
-       * <pre>
-       * Addresses of all Bulletin Board Servers
-       * </pre>
-       *
-       * <code>repeated string bulletinBoardAddress = 1;</code>
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-       * <pre>
-       * Addresses of all Bulletin Board Servers
-       * </pre>
-       *
-       * <code>repeated string bulletinBoardAddress = 1;</code>
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-       * <pre>
-       * Addresses of all Bulletin Board Servers
-       * </pre>
-       *
-       * <code>repeated string bulletinBoardAddress = 1;</code>
-       */
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-        return this;
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-      /**
-       * <pre>
-       * Addresses of all Bulletin Board Servers
-       * </pre>
-       *
-       * <code>repeated string bulletinBoardAddress = 1;</code>
-       */
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-       * <pre>
-       * Addresses of all Bulletin Board Servers
-       * </pre>
-       *
-       * <code>repeated string bulletinBoardAddress = 1;</code>
-       */
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-        return this;
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-       * <pre>
-       * Addresses of all Bulletin Board Servers
-       * </pre>
-       *
-       * <code>repeated string bulletinBoardAddress = 1;</code>
-       */
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-        return this;
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-
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-       * <pre>
-       * Threshold fraction of successful servers posts before a post task is considered complete
-       * </pre>
-       *
-       * <code>float minRedundancy = 2;</code>
-       */
-      public float getMinRedundancy() {
-        return minRedundancy_;
-      }
-      /**
-       * <pre>
-       * Threshold fraction of successful servers posts before a post task is considered complete
-       * </pre>
-       *
-       * <code>float minRedundancy = 2;</code>
-       */
-      public Builder setMinRedundancy(float value) {
-        
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-       * Threshold fraction of successful servers posts before a post task is considered complete
-       * </pre>
-       *
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-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
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-    public meerkat.protobuf.Voting.BulletinBoardClientParams getDefaultInstanceForType() {
-      return DEFAULT_INSTANCE;
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-
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-
-  public interface ElectionParamsOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:meerkat.ElectionParams)
-      com.google.protobuf.MessageOrBuilder {
-
-    /**
-     * <pre>
-     * TODO: different sets of keys for different roles?
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-     */
-    java.util.List<meerkat.protobuf.Crypto.SignatureVerificationKey> 
-        getTrusteeVerificationKeysList();
-    /**
-     * <pre>
-     * TODO: different sets of keys for different roles?
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-     */
-    meerkat.protobuf.Crypto.SignatureVerificationKey getTrusteeVerificationKeys(int index);
-    /**
-     * <pre>
-     * TODO: different sets of keys for different roles?
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-     */
-    int getTrusteeVerificationKeysCount();
-    /**
-     * <pre>
-     * TODO: different sets of keys for different roles?
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-     */
-    java.util.List<? extends meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder> 
-        getTrusteeVerificationKeysOrBuilderList();
-    /**
-     * <pre>
-     * TODO: different sets of keys for different roles?
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-     */
-    meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder getTrusteeVerificationKeysOrBuilder(
-        int index);
-
-    /**
-     * <pre>
-     * How many trustees must participate in a signature for it to be considered valid.
-     * </pre>
-     *
-     * <code>uint32 trusteeSignatureThreshold = 2;</code>
-     */
-    int getTrusteeSignatureThreshold();
-
-    /**
-     * <pre>
-     * The key used to encrypt ballots. The corresponding private key
-     * is shared between the trustees.
-     * </pre>
-     *
-     * <code>.meerkat.EncryptionPublicKey ballotEncryptionKey = 3;</code>
-     */
-    boolean hasBallotEncryptionKey();
-    /**
-     * <pre>
-     * The key used to encrypt ballots. The corresponding private key
-     * is shared between the trustees.
-     * </pre>
-     *
-     * <code>.meerkat.EncryptionPublicKey ballotEncryptionKey = 3;</code>
-     */
-    meerkat.protobuf.Crypto.EncryptionPublicKey getBallotEncryptionKey();
-    /**
-     * <pre>
-     * The key used to encrypt ballots. The corresponding private key
-     * is shared between the trustees.
-     * </pre>
-     *
-     * <code>.meerkat.EncryptionPublicKey ballotEncryptionKey = 3;</code>
-     */
-    meerkat.protobuf.Crypto.EncryptionPublicKeyOrBuilder getBallotEncryptionKeyOrBuilder();
-
-    /**
-     * <pre>
-     * Verification keys for valid mixers.
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-     */
-    java.util.List<meerkat.protobuf.Crypto.SignatureVerificationKey> 
-        getMixerVerificationKeysList();
-    /**
-     * <pre>
-     * Verification keys for valid mixers.
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-     */
-    meerkat.protobuf.Crypto.SignatureVerificationKey getMixerVerificationKeys(int index);
-    /**
-     * <pre>
-     * Verification keys for valid mixers.
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-     */
-    int getMixerVerificationKeysCount();
-    /**
-     * <pre>
-     * Verification keys for valid mixers.
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-     */
-    java.util.List<? extends meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder> 
-        getMixerVerificationKeysOrBuilderList();
-    /**
-     * <pre>
-     * Verification keys for valid mixers.
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-     */
-    meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder getMixerVerificationKeysOrBuilder(
-        int index);
-
-    /**
-     * <pre>
-     * How many mixers must participate for the network to be considered valid
-     * </pre>
-     *
-     * <code>uint32 mixerThreshold = 5;</code>
-     */
-    int getMixerThreshold();
-
-    /**
-     * <pre>
-     * questions to first indicate the voter's channel
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-     */
-    java.util.List<meerkat.protobuf.Voting.BallotQuestion> 
-        getChannelChoiceQuestionsList();
-    /**
-     * <pre>
-     * questions to first indicate the voter's channel
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-     */
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-    /**
-     * <pre>
-     * questions to first indicate the voter's channel
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-     */
-    int getChannelChoiceQuestionsCount();
-    /**
-     * <pre>
-     * questions to first indicate the voter's channel
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-     */
-    java.util.List<? extends meerkat.protobuf.Voting.BallotQuestionOrBuilder> 
-        getChannelChoiceQuestionsOrBuilderList();
-    /**
-     * <pre>
-     * questions to first indicate the voter's channel
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-     */
-    meerkat.protobuf.Voting.BallotQuestionOrBuilder getChannelChoiceQuestionsOrBuilder(
-        int index);
-
-    /**
-     * <pre>
-     * translating the channel-choice answers to the voter's channel
-     * </pre>
-     *
-     * <code>.meerkat.SimpleCategoriesSelectionData selection_data = 7;</code>
-     */
-    boolean hasSelectionData();
-    /**
-     * <pre>
-     * translating the channel-choice answers to the voter's channel
-     * </pre>
-     *
-     * <code>.meerkat.SimpleCategoriesSelectionData selection_data = 7;</code>
-     */
-    meerkat.protobuf.Voting.SimpleCategoriesSelectionData getSelectionData();
-    /**
-     * <pre>
-     * translating the channel-choice answers to the voter's channel
-     * </pre>
-     *
-     * <code>.meerkat.SimpleCategoriesSelectionData selection_data = 7;</code>
-     */
-    meerkat.protobuf.Voting.SimpleCategoriesSelectionDataOrBuilder getSelectionDataOrBuilder();
-
-    /**
-     * <pre>
-     * Candidate list (or other question format)
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-     */
-    java.util.List<meerkat.protobuf.Voting.BallotQuestion> 
-        getRaceQuestionsList();
-    /**
-     * <pre>
-     * Candidate list (or other question format)
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-     */
-    meerkat.protobuf.Voting.BallotQuestion getRaceQuestions(int index);
-    /**
-     * <pre>
-     * Candidate list (or other question format)
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-     */
-    int getRaceQuestionsCount();
-    /**
-     * <pre>
-     * Candidate list (or other question format)
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-     */
-    java.util.List<? extends meerkat.protobuf.Voting.BallotQuestionOrBuilder> 
-        getRaceQuestionsOrBuilderList();
-    /**
-     * <pre>
-     * Candidate list (or other question format)
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-     */
-    meerkat.protobuf.Voting.BallotQuestionOrBuilder getRaceQuestionsOrBuilder(
-        int index);
-
-    /**
-     * <pre>
-     * Data required in order to access the Bulletin Board Servers
-     * </pre>
-     *
-     * <code>.meerkat.BulletinBoardClientParams bulletinBoardClientParams = 9;</code>
-     */
-    boolean hasBulletinBoardClientParams();
-    /**
-     * <pre>
-     * Data required in order to access the Bulletin Board Servers
-     * </pre>
-     *
-     * <code>.meerkat.BulletinBoardClientParams bulletinBoardClientParams = 9;</code>
-     */
-    meerkat.protobuf.Voting.BulletinBoardClientParams getBulletinBoardClientParams();
-    /**
-     * <pre>
-     * Data required in order to access the Bulletin Board Servers
-     * </pre>
-     *
-     * <code>.meerkat.BulletinBoardClientParams bulletinBoardClientParams = 9;</code>
-     */
-    meerkat.protobuf.Voting.BulletinBoardClientParamsOrBuilder getBulletinBoardClientParamsOrBuilder();
-  }
-  /**
-   * Protobuf type {@code meerkat.ElectionParams}
-   */
-  public  static final class ElectionParams extends
-      com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:meerkat.ElectionParams)
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-    // Use ElectionParams.newBuilder() to construct.
-    private ElectionParams(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
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-              break;
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-              meerkat.protobuf.Voting.BulletinBoardClientParams.Builder subBuilder = null;
-              if (bulletinBoardClientParams_ != null) {
-                subBuilder = bulletinBoardClientParams_.toBuilder();
-              }
-              bulletinBoardClientParams_ = input.readMessage(meerkat.protobuf.Voting.BulletinBoardClientParams.parser(), extensionRegistry);
-              if (subBuilder != null) {
-                subBuilder.mergeFrom(bulletinBoardClientParams_);
-                bulletinBoardClientParams_ = subBuilder.buildPartial();
-              }
-
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
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-        throw new com.google.protobuf.InvalidProtocolBufferException(
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-        if (((mutable_bitField0_ & 0x00000001) == 0x00000001)) {
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-          raceQuestions_ = java.util.Collections.unmodifiableList(raceQuestions_);
-        }
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return meerkat.protobuf.Voting.internal_static_meerkat_ElectionParams_descriptor;
-    }
-
-    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return meerkat.protobuf.Voting.internal_static_meerkat_ElectionParams_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              meerkat.protobuf.Voting.ElectionParams.class, meerkat.protobuf.Voting.ElectionParams.Builder.class);
-    }
-
-    private int bitField0_;
-    public static final int TRUSTEEVERIFICATIONKEYS_FIELD_NUMBER = 1;
-    private java.util.List<meerkat.protobuf.Crypto.SignatureVerificationKey> trusteeVerificationKeys_;
-    /**
-     * <pre>
-     * TODO: different sets of keys for different roles?
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-     */
-    public java.util.List<meerkat.protobuf.Crypto.SignatureVerificationKey> getTrusteeVerificationKeysList() {
-      return trusteeVerificationKeys_;
-    }
-    /**
-     * <pre>
-     * TODO: different sets of keys for different roles?
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-     */
-    public java.util.List<? extends meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder> 
-        getTrusteeVerificationKeysOrBuilderList() {
-      return trusteeVerificationKeys_;
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-    /**
-     * <pre>
-     * TODO: different sets of keys for different roles?
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-     */
-    public int getTrusteeVerificationKeysCount() {
-      return trusteeVerificationKeys_.size();
-    }
-    /**
-     * <pre>
-     * TODO: different sets of keys for different roles?
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-     */
-    public meerkat.protobuf.Crypto.SignatureVerificationKey getTrusteeVerificationKeys(int index) {
-      return trusteeVerificationKeys_.get(index);
-    }
-    /**
-     * <pre>
-     * TODO: different sets of keys for different roles?
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-     */
-    public meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder getTrusteeVerificationKeysOrBuilder(
-        int index) {
-      return trusteeVerificationKeys_.get(index);
-    }
-
-    public static final int TRUSTEESIGNATURETHRESHOLD_FIELD_NUMBER = 2;
-    private int trusteeSignatureThreshold_;
-    /**
-     * <pre>
-     * How many trustees must participate in a signature for it to be considered valid.
-     * </pre>
-     *
-     * <code>uint32 trusteeSignatureThreshold = 2;</code>
-     */
-    public int getTrusteeSignatureThreshold() {
-      return trusteeSignatureThreshold_;
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-
-    public static final int BALLOTENCRYPTIONKEY_FIELD_NUMBER = 3;
-    private meerkat.protobuf.Crypto.EncryptionPublicKey ballotEncryptionKey_;
-    /**
-     * <pre>
-     * The key used to encrypt ballots. The corresponding private key
-     * is shared between the trustees.
-     * </pre>
-     *
-     * <code>.meerkat.EncryptionPublicKey ballotEncryptionKey = 3;</code>
-     */
-    public boolean hasBallotEncryptionKey() {
-      return ballotEncryptionKey_ != null;
-    }
-    /**
-     * <pre>
-     * The key used to encrypt ballots. The corresponding private key
-     * is shared between the trustees.
-     * </pre>
-     *
-     * <code>.meerkat.EncryptionPublicKey ballotEncryptionKey = 3;</code>
-     */
-    public meerkat.protobuf.Crypto.EncryptionPublicKey getBallotEncryptionKey() {
-      return ballotEncryptionKey_ == null ? meerkat.protobuf.Crypto.EncryptionPublicKey.getDefaultInstance() : ballotEncryptionKey_;
-    }
-    /**
-     * <pre>
-     * The key used to encrypt ballots. The corresponding private key
-     * is shared between the trustees.
-     * </pre>
-     *
-     * <code>.meerkat.EncryptionPublicKey ballotEncryptionKey = 3;</code>
-     */
-    public meerkat.protobuf.Crypto.EncryptionPublicKeyOrBuilder getBallotEncryptionKeyOrBuilder() {
-      return getBallotEncryptionKey();
-    }
-
-    public static final int MIXERVERIFICATIONKEYS_FIELD_NUMBER = 4;
-    private java.util.List<meerkat.protobuf.Crypto.SignatureVerificationKey> mixerVerificationKeys_;
-    /**
-     * <pre>
-     * Verification keys for valid mixers.
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-     */
-    public java.util.List<meerkat.protobuf.Crypto.SignatureVerificationKey> getMixerVerificationKeysList() {
-      return mixerVerificationKeys_;
-    }
-    /**
-     * <pre>
-     * Verification keys for valid mixers.
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-     */
-    public java.util.List<? extends meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder> 
-        getMixerVerificationKeysOrBuilderList() {
-      return mixerVerificationKeys_;
-    }
-    /**
-     * <pre>
-     * Verification keys for valid mixers.
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-     */
-    public int getMixerVerificationKeysCount() {
-      return mixerVerificationKeys_.size();
-    }
-    /**
-     * <pre>
-     * Verification keys for valid mixers.
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-     */
-    public meerkat.protobuf.Crypto.SignatureVerificationKey getMixerVerificationKeys(int index) {
-      return mixerVerificationKeys_.get(index);
-    }
-    /**
-     * <pre>
-     * Verification keys for valid mixers.
-     * </pre>
-     *
-     * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-     */
-    public meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder getMixerVerificationKeysOrBuilder(
-        int index) {
-      return mixerVerificationKeys_.get(index);
-    }
-
-    public static final int MIXERTHRESHOLD_FIELD_NUMBER = 5;
-    private int mixerThreshold_;
-    /**
-     * <pre>
-     * How many mixers must participate for the network to be considered valid
-     * </pre>
-     *
-     * <code>uint32 mixerThreshold = 5;</code>
-     */
-    public int getMixerThreshold() {
-      return mixerThreshold_;
-    }
-
-    public static final int CHANNEL_CHOICE_QUESTIONS_FIELD_NUMBER = 6;
-    private java.util.List<meerkat.protobuf.Voting.BallotQuestion> channelChoiceQuestions_;
-    /**
-     * <pre>
-     * questions to first indicate the voter's channel
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-     */
-    public java.util.List<meerkat.protobuf.Voting.BallotQuestion> getChannelChoiceQuestionsList() {
-      return channelChoiceQuestions_;
-    }
-    /**
-     * <pre>
-     * questions to first indicate the voter's channel
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-     */
-    public java.util.List<? extends meerkat.protobuf.Voting.BallotQuestionOrBuilder> 
-        getChannelChoiceQuestionsOrBuilderList() {
-      return channelChoiceQuestions_;
-    }
-    /**
-     * <pre>
-     * questions to first indicate the voter's channel
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-     */
-    public int getChannelChoiceQuestionsCount() {
-      return channelChoiceQuestions_.size();
-    }
-    /**
-     * <pre>
-     * questions to first indicate the voter's channel
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-     */
-    public meerkat.protobuf.Voting.BallotQuestion getChannelChoiceQuestions(int index) {
-      return channelChoiceQuestions_.get(index);
-    }
-    /**
-     * <pre>
-     * questions to first indicate the voter's channel
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-     */
-    public meerkat.protobuf.Voting.BallotQuestionOrBuilder getChannelChoiceQuestionsOrBuilder(
-        int index) {
-      return channelChoiceQuestions_.get(index);
-    }
-
-    public static final int SELECTION_DATA_FIELD_NUMBER = 7;
-    private meerkat.protobuf.Voting.SimpleCategoriesSelectionData selectionData_;
-    /**
-     * <pre>
-     * translating the channel-choice answers to the voter's channel
-     * </pre>
-     *
-     * <code>.meerkat.SimpleCategoriesSelectionData selection_data = 7;</code>
-     */
-    public boolean hasSelectionData() {
-      return selectionData_ != null;
-    }
-    /**
-     * <pre>
-     * translating the channel-choice answers to the voter's channel
-     * </pre>
-     *
-     * <code>.meerkat.SimpleCategoriesSelectionData selection_data = 7;</code>
-     */
-    public meerkat.protobuf.Voting.SimpleCategoriesSelectionData getSelectionData() {
-      return selectionData_ == null ? meerkat.protobuf.Voting.SimpleCategoriesSelectionData.getDefaultInstance() : selectionData_;
-    }
-    /**
-     * <pre>
-     * translating the channel-choice answers to the voter's channel
-     * </pre>
-     *
-     * <code>.meerkat.SimpleCategoriesSelectionData selection_data = 7;</code>
-     */
-    public meerkat.protobuf.Voting.SimpleCategoriesSelectionDataOrBuilder getSelectionDataOrBuilder() {
-      return getSelectionData();
-    }
-
-    public static final int RACE_QUESTIONS_FIELD_NUMBER = 8;
-    private java.util.List<meerkat.protobuf.Voting.BallotQuestion> raceQuestions_;
-    /**
-     * <pre>
-     * Candidate list (or other question format)
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-     */
-    public java.util.List<meerkat.protobuf.Voting.BallotQuestion> getRaceQuestionsList() {
-      return raceQuestions_;
-    }
-    /**
-     * <pre>
-     * Candidate list (or other question format)
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-     */
-    public java.util.List<? extends meerkat.protobuf.Voting.BallotQuestionOrBuilder> 
-        getRaceQuestionsOrBuilderList() {
-      return raceQuestions_;
-    }
-    /**
-     * <pre>
-     * Candidate list (or other question format)
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-     */
-    public int getRaceQuestionsCount() {
-      return raceQuestions_.size();
-    }
-    /**
-     * <pre>
-     * Candidate list (or other question format)
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-     */
-    public meerkat.protobuf.Voting.BallotQuestion getRaceQuestions(int index) {
-      return raceQuestions_.get(index);
-    }
-    /**
-     * <pre>
-     * Candidate list (or other question format)
-     * </pre>
-     *
-     * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-     */
-    public meerkat.protobuf.Voting.BallotQuestionOrBuilder getRaceQuestionsOrBuilder(
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-      return raceQuestions_.get(index);
-    }
-
-    public static final int BULLETINBOARDCLIENTPARAMS_FIELD_NUMBER = 9;
-    private meerkat.protobuf.Voting.BulletinBoardClientParams bulletinBoardClientParams_;
-    /**
-     * <pre>
-     * Data required in order to access the Bulletin Board Servers
-     * </pre>
-     *
-     * <code>.meerkat.BulletinBoardClientParams bulletinBoardClientParams = 9;</code>
-     */
-    public boolean hasBulletinBoardClientParams() {
-      return bulletinBoardClientParams_ != null;
-    }
-    /**
-     * <pre>
-     * Data required in order to access the Bulletin Board Servers
-     * </pre>
-     *
-     * <code>.meerkat.BulletinBoardClientParams bulletinBoardClientParams = 9;</code>
-     */
-    public meerkat.protobuf.Voting.BulletinBoardClientParams getBulletinBoardClientParams() {
-      return bulletinBoardClientParams_ == null ? meerkat.protobuf.Voting.BulletinBoardClientParams.getDefaultInstance() : bulletinBoardClientParams_;
-    }
-    /**
-     * <pre>
-     * Data required in order to access the Bulletin Board Servers
-     * </pre>
-     *
-     * <code>.meerkat.BulletinBoardClientParams bulletinBoardClientParams = 9;</code>
-     */
-    public meerkat.protobuf.Voting.BulletinBoardClientParamsOrBuilder getBulletinBoardClientParamsOrBuilder() {
-      return getBulletinBoardClientParams();
-    }
-
-    private byte memoizedIsInitialized = -1;
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-      }
-      /**
-       * <pre>
-       * TODO: different sets of keys for different roles?
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-       */
-      public Builder setTrusteeVerificationKeys(
-          int index, meerkat.protobuf.Crypto.SignatureVerificationKey value) {
-        if (trusteeVerificationKeysBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureTrusteeVerificationKeysIsMutable();
-          trusteeVerificationKeys_.set(index, value);
-          onChanged();
-        } else {
-          trusteeVerificationKeysBuilder_.setMessage(index, value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * TODO: different sets of keys for different roles?
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-       */
-      public Builder setTrusteeVerificationKeys(
-          int index, meerkat.protobuf.Crypto.SignatureVerificationKey.Builder builderForValue) {
-        if (trusteeVerificationKeysBuilder_ == null) {
-          ensureTrusteeVerificationKeysIsMutable();
-          trusteeVerificationKeys_.set(index, builderForValue.build());
-          onChanged();
-        } else {
-          trusteeVerificationKeysBuilder_.setMessage(index, builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * TODO: different sets of keys for different roles?
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-       */
-      public Builder addTrusteeVerificationKeys(meerkat.protobuf.Crypto.SignatureVerificationKey value) {
-        if (trusteeVerificationKeysBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureTrusteeVerificationKeysIsMutable();
-          trusteeVerificationKeys_.add(value);
-          onChanged();
-        } else {
-          trusteeVerificationKeysBuilder_.addMessage(value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * TODO: different sets of keys for different roles?
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-       */
-      public Builder addTrusteeVerificationKeys(
-          int index, meerkat.protobuf.Crypto.SignatureVerificationKey value) {
-        if (trusteeVerificationKeysBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureTrusteeVerificationKeysIsMutable();
-          trusteeVerificationKeys_.add(index, value);
-          onChanged();
-        } else {
-          trusteeVerificationKeysBuilder_.addMessage(index, value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * TODO: different sets of keys for different roles?
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-       */
-      public Builder addTrusteeVerificationKeys(
-          meerkat.protobuf.Crypto.SignatureVerificationKey.Builder builderForValue) {
-        if (trusteeVerificationKeysBuilder_ == null) {
-          ensureTrusteeVerificationKeysIsMutable();
-          trusteeVerificationKeys_.add(builderForValue.build());
-          onChanged();
-        } else {
-          trusteeVerificationKeysBuilder_.addMessage(builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * TODO: different sets of keys for different roles?
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-       */
-      public Builder addTrusteeVerificationKeys(
-          int index, meerkat.protobuf.Crypto.SignatureVerificationKey.Builder builderForValue) {
-        if (trusteeVerificationKeysBuilder_ == null) {
-          ensureTrusteeVerificationKeysIsMutable();
-          trusteeVerificationKeys_.add(index, builderForValue.build());
-          onChanged();
-        } else {
-          trusteeVerificationKeysBuilder_.addMessage(index, builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * TODO: different sets of keys for different roles?
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-       */
-      public Builder addAllTrusteeVerificationKeys(
-          java.lang.Iterable<? extends meerkat.protobuf.Crypto.SignatureVerificationKey> values) {
-        if (trusteeVerificationKeysBuilder_ == null) {
-          ensureTrusteeVerificationKeysIsMutable();
-          com.google.protobuf.AbstractMessageLite.Builder.addAll(
-              values, trusteeVerificationKeys_);
-          onChanged();
-        } else {
-          trusteeVerificationKeysBuilder_.addAllMessages(values);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * TODO: different sets of keys for different roles?
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-       */
-      public Builder clearTrusteeVerificationKeys() {
-        if (trusteeVerificationKeysBuilder_ == null) {
-          trusteeVerificationKeys_ = java.util.Collections.emptyList();
-          bitField0_ = (bitField0_ & ~0x00000001);
-          onChanged();
-        } else {
-          trusteeVerificationKeysBuilder_.clear();
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * TODO: different sets of keys for different roles?
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-       */
-      public Builder removeTrusteeVerificationKeys(int index) {
-        if (trusteeVerificationKeysBuilder_ == null) {
-          ensureTrusteeVerificationKeysIsMutable();
-          trusteeVerificationKeys_.remove(index);
-          onChanged();
-        } else {
-          trusteeVerificationKeysBuilder_.remove(index);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * TODO: different sets of keys for different roles?
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-       */
-      public meerkat.protobuf.Crypto.SignatureVerificationKey.Builder getTrusteeVerificationKeysBuilder(
-          int index) {
-        return getTrusteeVerificationKeysFieldBuilder().getBuilder(index);
-      }
-      /**
-       * <pre>
-       * TODO: different sets of keys for different roles?
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-       */
-      public meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder getTrusteeVerificationKeysOrBuilder(
-          int index) {
-        if (trusteeVerificationKeysBuilder_ == null) {
-          return trusteeVerificationKeys_.get(index);  } else {
-          return trusteeVerificationKeysBuilder_.getMessageOrBuilder(index);
-        }
-      }
-      /**
-       * <pre>
-       * TODO: different sets of keys for different roles?
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-       */
-      public java.util.List<? extends meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder> 
-           getTrusteeVerificationKeysOrBuilderList() {
-        if (trusteeVerificationKeysBuilder_ != null) {
-          return trusteeVerificationKeysBuilder_.getMessageOrBuilderList();
-        } else {
-          return java.util.Collections.unmodifiableList(trusteeVerificationKeys_);
-        }
-      }
-      /**
-       * <pre>
-       * TODO: different sets of keys for different roles?
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-       */
-      public meerkat.protobuf.Crypto.SignatureVerificationKey.Builder addTrusteeVerificationKeysBuilder() {
-        return getTrusteeVerificationKeysFieldBuilder().addBuilder(
-            meerkat.protobuf.Crypto.SignatureVerificationKey.getDefaultInstance());
-      }
-      /**
-       * <pre>
-       * TODO: different sets of keys for different roles?
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-       */
-      public meerkat.protobuf.Crypto.SignatureVerificationKey.Builder addTrusteeVerificationKeysBuilder(
-          int index) {
-        return getTrusteeVerificationKeysFieldBuilder().addBuilder(
-            index, meerkat.protobuf.Crypto.SignatureVerificationKey.getDefaultInstance());
-      }
-      /**
-       * <pre>
-       * TODO: different sets of keys for different roles?
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey trusteeVerificationKeys = 1;</code>
-       */
-      public java.util.List<meerkat.protobuf.Crypto.SignatureVerificationKey.Builder> 
-           getTrusteeVerificationKeysBuilderList() {
-        return getTrusteeVerificationKeysFieldBuilder().getBuilderList();
-      }
-      private com.google.protobuf.RepeatedFieldBuilderV3<
-          meerkat.protobuf.Crypto.SignatureVerificationKey, meerkat.protobuf.Crypto.SignatureVerificationKey.Builder, meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder> 
-          getTrusteeVerificationKeysFieldBuilder() {
-        if (trusteeVerificationKeysBuilder_ == null) {
-          trusteeVerificationKeysBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
-              meerkat.protobuf.Crypto.SignatureVerificationKey, meerkat.protobuf.Crypto.SignatureVerificationKey.Builder, meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder>(
-                  trusteeVerificationKeys_,
-                  ((bitField0_ & 0x00000001) == 0x00000001),
-                  getParentForChildren(),
-                  isClean());
-          trusteeVerificationKeys_ = null;
-        }
-        return trusteeVerificationKeysBuilder_;
-      }
-
-      private int trusteeSignatureThreshold_ ;
-      /**
-       * <pre>
-       * How many trustees must participate in a signature for it to be considered valid.
-       * </pre>
-       *
-       * <code>uint32 trusteeSignatureThreshold = 2;</code>
-       */
-      public int getTrusteeSignatureThreshold() {
-        return trusteeSignatureThreshold_;
-      }
-      /**
-       * <pre>
-       * How many trustees must participate in a signature for it to be considered valid.
-       * </pre>
-       *
-       * <code>uint32 trusteeSignatureThreshold = 2;</code>
-       */
-      public Builder setTrusteeSignatureThreshold(int value) {
-        
-        trusteeSignatureThreshold_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * How many trustees must participate in a signature for it to be considered valid.
-       * </pre>
-       *
-       * <code>uint32 trusteeSignatureThreshold = 2;</code>
-       */
-      public Builder clearTrusteeSignatureThreshold() {
-        
-        trusteeSignatureThreshold_ = 0;
-        onChanged();
-        return this;
-      }
-
-      private meerkat.protobuf.Crypto.EncryptionPublicKey ballotEncryptionKey_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          meerkat.protobuf.Crypto.EncryptionPublicKey, meerkat.protobuf.Crypto.EncryptionPublicKey.Builder, meerkat.protobuf.Crypto.EncryptionPublicKeyOrBuilder> ballotEncryptionKeyBuilder_;
-      /**
-       * <pre>
-       * The key used to encrypt ballots. The corresponding private key
-       * is shared between the trustees.
-       * </pre>
-       *
-       * <code>.meerkat.EncryptionPublicKey ballotEncryptionKey = 3;</code>
-       */
-      public boolean hasBallotEncryptionKey() {
-        return ballotEncryptionKeyBuilder_ != null || ballotEncryptionKey_ != null;
-      }
-      /**
-       * <pre>
-       * The key used to encrypt ballots. The corresponding private key
-       * is shared between the trustees.
-       * </pre>
-       *
-       * <code>.meerkat.EncryptionPublicKey ballotEncryptionKey = 3;</code>
-       */
-      public meerkat.protobuf.Crypto.EncryptionPublicKey getBallotEncryptionKey() {
-        if (ballotEncryptionKeyBuilder_ == null) {
-          return ballotEncryptionKey_ == null ? meerkat.protobuf.Crypto.EncryptionPublicKey.getDefaultInstance() : ballotEncryptionKey_;
-        } else {
-          return ballotEncryptionKeyBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * The key used to encrypt ballots. The corresponding private key
-       * is shared between the trustees.
-       * </pre>
-       *
-       * <code>.meerkat.EncryptionPublicKey ballotEncryptionKey = 3;</code>
-       */
-      public Builder setBallotEncryptionKey(meerkat.protobuf.Crypto.EncryptionPublicKey value) {
-        if (ballotEncryptionKeyBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ballotEncryptionKey_ = value;
-          onChanged();
-        } else {
-          ballotEncryptionKeyBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * The key used to encrypt ballots. The corresponding private key
-       * is shared between the trustees.
-       * </pre>
-       *
-       * <code>.meerkat.EncryptionPublicKey ballotEncryptionKey = 3;</code>
-       */
-      public Builder setBallotEncryptionKey(
-          meerkat.protobuf.Crypto.EncryptionPublicKey.Builder builderForValue) {
-        if (ballotEncryptionKeyBuilder_ == null) {
-          ballotEncryptionKey_ = builderForValue.build();
-          onChanged();
-        } else {
-          ballotEncryptionKeyBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * The key used to encrypt ballots. The corresponding private key
-       * is shared between the trustees.
-       * </pre>
-       *
-       * <code>.meerkat.EncryptionPublicKey ballotEncryptionKey = 3;</code>
-       */
-      public Builder mergeBallotEncryptionKey(meerkat.protobuf.Crypto.EncryptionPublicKey value) {
-        if (ballotEncryptionKeyBuilder_ == null) {
-          if (ballotEncryptionKey_ != null) {
-            ballotEncryptionKey_ =
-              meerkat.protobuf.Crypto.EncryptionPublicKey.newBuilder(ballotEncryptionKey_).mergeFrom(value).buildPartial();
-          } else {
-            ballotEncryptionKey_ = value;
-          }
-          onChanged();
-        } else {
-          ballotEncryptionKeyBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * The key used to encrypt ballots. The corresponding private key
-       * is shared between the trustees.
-       * </pre>
-       *
-       * <code>.meerkat.EncryptionPublicKey ballotEncryptionKey = 3;</code>
-       */
-      public Builder clearBallotEncryptionKey() {
-        if (ballotEncryptionKeyBuilder_ == null) {
-          ballotEncryptionKey_ = null;
-          onChanged();
-        } else {
-          ballotEncryptionKey_ = null;
-          ballotEncryptionKeyBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * The key used to encrypt ballots. The corresponding private key
-       * is shared between the trustees.
-       * </pre>
-       *
-       * <code>.meerkat.EncryptionPublicKey ballotEncryptionKey = 3;</code>
-       */
-      public meerkat.protobuf.Crypto.EncryptionPublicKey.Builder getBallotEncryptionKeyBuilder() {
-        
-        onChanged();
-        return getBallotEncryptionKeyFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * The key used to encrypt ballots. The corresponding private key
-       * is shared between the trustees.
-       * </pre>
-       *
-       * <code>.meerkat.EncryptionPublicKey ballotEncryptionKey = 3;</code>
-       */
-      public meerkat.protobuf.Crypto.EncryptionPublicKeyOrBuilder getBallotEncryptionKeyOrBuilder() {
-        if (ballotEncryptionKeyBuilder_ != null) {
-          return ballotEncryptionKeyBuilder_.getMessageOrBuilder();
-        } else {
-          return ballotEncryptionKey_ == null ?
-              meerkat.protobuf.Crypto.EncryptionPublicKey.getDefaultInstance() : ballotEncryptionKey_;
-        }
-      }
-      /**
-       * <pre>
-       * The key used to encrypt ballots. The corresponding private key
-       * is shared between the trustees.
-       * </pre>
-       *
-       * <code>.meerkat.EncryptionPublicKey ballotEncryptionKey = 3;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          meerkat.protobuf.Crypto.EncryptionPublicKey, meerkat.protobuf.Crypto.EncryptionPublicKey.Builder, meerkat.protobuf.Crypto.EncryptionPublicKeyOrBuilder> 
-          getBallotEncryptionKeyFieldBuilder() {
-        if (ballotEncryptionKeyBuilder_ == null) {
-          ballotEncryptionKeyBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              meerkat.protobuf.Crypto.EncryptionPublicKey, meerkat.protobuf.Crypto.EncryptionPublicKey.Builder, meerkat.protobuf.Crypto.EncryptionPublicKeyOrBuilder>(
-                  getBallotEncryptionKey(),
-                  getParentForChildren(),
-                  isClean());
-          ballotEncryptionKey_ = null;
-        }
-        return ballotEncryptionKeyBuilder_;
-      }
-
-      private java.util.List<meerkat.protobuf.Crypto.SignatureVerificationKey> mixerVerificationKeys_ =
-        java.util.Collections.emptyList();
-      private void ensureMixerVerificationKeysIsMutable() {
-        if (!((bitField0_ & 0x00000008) == 0x00000008)) {
-          mixerVerificationKeys_ = new java.util.ArrayList<meerkat.protobuf.Crypto.SignatureVerificationKey>(mixerVerificationKeys_);
-          bitField0_ |= 0x00000008;
-         }
-      }
-
-      private com.google.protobuf.RepeatedFieldBuilderV3<
-          meerkat.protobuf.Crypto.SignatureVerificationKey, meerkat.protobuf.Crypto.SignatureVerificationKey.Builder, meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder> mixerVerificationKeysBuilder_;
-
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public java.util.List<meerkat.protobuf.Crypto.SignatureVerificationKey> getMixerVerificationKeysList() {
-        if (mixerVerificationKeysBuilder_ == null) {
-          return java.util.Collections.unmodifiableList(mixerVerificationKeys_);
-        } else {
-          return mixerVerificationKeysBuilder_.getMessageList();
-        }
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public int getMixerVerificationKeysCount() {
-        if (mixerVerificationKeysBuilder_ == null) {
-          return mixerVerificationKeys_.size();
-        } else {
-          return mixerVerificationKeysBuilder_.getCount();
-        }
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public meerkat.protobuf.Crypto.SignatureVerificationKey getMixerVerificationKeys(int index) {
-        if (mixerVerificationKeysBuilder_ == null) {
-          return mixerVerificationKeys_.get(index);
-        } else {
-          return mixerVerificationKeysBuilder_.getMessage(index);
-        }
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public Builder setMixerVerificationKeys(
-          int index, meerkat.protobuf.Crypto.SignatureVerificationKey value) {
-        if (mixerVerificationKeysBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureMixerVerificationKeysIsMutable();
-          mixerVerificationKeys_.set(index, value);
-          onChanged();
-        } else {
-          mixerVerificationKeysBuilder_.setMessage(index, value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public Builder setMixerVerificationKeys(
-          int index, meerkat.protobuf.Crypto.SignatureVerificationKey.Builder builderForValue) {
-        if (mixerVerificationKeysBuilder_ == null) {
-          ensureMixerVerificationKeysIsMutable();
-          mixerVerificationKeys_.set(index, builderForValue.build());
-          onChanged();
-        } else {
-          mixerVerificationKeysBuilder_.setMessage(index, builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public Builder addMixerVerificationKeys(meerkat.protobuf.Crypto.SignatureVerificationKey value) {
-        if (mixerVerificationKeysBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureMixerVerificationKeysIsMutable();
-          mixerVerificationKeys_.add(value);
-          onChanged();
-        } else {
-          mixerVerificationKeysBuilder_.addMessage(value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public Builder addMixerVerificationKeys(
-          int index, meerkat.protobuf.Crypto.SignatureVerificationKey value) {
-        if (mixerVerificationKeysBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureMixerVerificationKeysIsMutable();
-          mixerVerificationKeys_.add(index, value);
-          onChanged();
-        } else {
-          mixerVerificationKeysBuilder_.addMessage(index, value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public Builder addMixerVerificationKeys(
-          meerkat.protobuf.Crypto.SignatureVerificationKey.Builder builderForValue) {
-        if (mixerVerificationKeysBuilder_ == null) {
-          ensureMixerVerificationKeysIsMutable();
-          mixerVerificationKeys_.add(builderForValue.build());
-          onChanged();
-        } else {
-          mixerVerificationKeysBuilder_.addMessage(builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public Builder addMixerVerificationKeys(
-          int index, meerkat.protobuf.Crypto.SignatureVerificationKey.Builder builderForValue) {
-        if (mixerVerificationKeysBuilder_ == null) {
-          ensureMixerVerificationKeysIsMutable();
-          mixerVerificationKeys_.add(index, builderForValue.build());
-          onChanged();
-        } else {
-          mixerVerificationKeysBuilder_.addMessage(index, builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public Builder addAllMixerVerificationKeys(
-          java.lang.Iterable<? extends meerkat.protobuf.Crypto.SignatureVerificationKey> values) {
-        if (mixerVerificationKeysBuilder_ == null) {
-          ensureMixerVerificationKeysIsMutable();
-          com.google.protobuf.AbstractMessageLite.Builder.addAll(
-              values, mixerVerificationKeys_);
-          onChanged();
-        } else {
-          mixerVerificationKeysBuilder_.addAllMessages(values);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public Builder clearMixerVerificationKeys() {
-        if (mixerVerificationKeysBuilder_ == null) {
-          mixerVerificationKeys_ = java.util.Collections.emptyList();
-          bitField0_ = (bitField0_ & ~0x00000008);
-          onChanged();
-        } else {
-          mixerVerificationKeysBuilder_.clear();
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public Builder removeMixerVerificationKeys(int index) {
-        if (mixerVerificationKeysBuilder_ == null) {
-          ensureMixerVerificationKeysIsMutable();
-          mixerVerificationKeys_.remove(index);
-          onChanged();
-        } else {
-          mixerVerificationKeysBuilder_.remove(index);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public meerkat.protobuf.Crypto.SignatureVerificationKey.Builder getMixerVerificationKeysBuilder(
-          int index) {
-        return getMixerVerificationKeysFieldBuilder().getBuilder(index);
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder getMixerVerificationKeysOrBuilder(
-          int index) {
-        if (mixerVerificationKeysBuilder_ == null) {
-          return mixerVerificationKeys_.get(index);  } else {
-          return mixerVerificationKeysBuilder_.getMessageOrBuilder(index);
-        }
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public java.util.List<? extends meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder> 
-           getMixerVerificationKeysOrBuilderList() {
-        if (mixerVerificationKeysBuilder_ != null) {
-          return mixerVerificationKeysBuilder_.getMessageOrBuilderList();
-        } else {
-          return java.util.Collections.unmodifiableList(mixerVerificationKeys_);
-        }
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public meerkat.protobuf.Crypto.SignatureVerificationKey.Builder addMixerVerificationKeysBuilder() {
-        return getMixerVerificationKeysFieldBuilder().addBuilder(
-            meerkat.protobuf.Crypto.SignatureVerificationKey.getDefaultInstance());
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public meerkat.protobuf.Crypto.SignatureVerificationKey.Builder addMixerVerificationKeysBuilder(
-          int index) {
-        return getMixerVerificationKeysFieldBuilder().addBuilder(
-            index, meerkat.protobuf.Crypto.SignatureVerificationKey.getDefaultInstance());
-      }
-      /**
-       * <pre>
-       * Verification keys for valid mixers.
-       * </pre>
-       *
-       * <code>repeated .meerkat.SignatureVerificationKey mixerVerificationKeys = 4;</code>
-       */
-      public java.util.List<meerkat.protobuf.Crypto.SignatureVerificationKey.Builder> 
-           getMixerVerificationKeysBuilderList() {
-        return getMixerVerificationKeysFieldBuilder().getBuilderList();
-      }
-      private com.google.protobuf.RepeatedFieldBuilderV3<
-          meerkat.protobuf.Crypto.SignatureVerificationKey, meerkat.protobuf.Crypto.SignatureVerificationKey.Builder, meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder> 
-          getMixerVerificationKeysFieldBuilder() {
-        if (mixerVerificationKeysBuilder_ == null) {
-          mixerVerificationKeysBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
-              meerkat.protobuf.Crypto.SignatureVerificationKey, meerkat.protobuf.Crypto.SignatureVerificationKey.Builder, meerkat.protobuf.Crypto.SignatureVerificationKeyOrBuilder>(
-                  mixerVerificationKeys_,
-                  ((bitField0_ & 0x00000008) == 0x00000008),
-                  getParentForChildren(),
-                  isClean());
-          mixerVerificationKeys_ = null;
-        }
-        return mixerVerificationKeysBuilder_;
-      }
-
-      private int mixerThreshold_ ;
-      /**
-       * <pre>
-       * How many mixers must participate for the network to be considered valid
-       * </pre>
-       *
-       * <code>uint32 mixerThreshold = 5;</code>
-       */
-      public int getMixerThreshold() {
-        return mixerThreshold_;
-      }
-      /**
-       * <pre>
-       * How many mixers must participate for the network to be considered valid
-       * </pre>
-       *
-       * <code>uint32 mixerThreshold = 5;</code>
-       */
-      public Builder setMixerThreshold(int value) {
-        
-        mixerThreshold_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <pre>
-       * How many mixers must participate for the network to be considered valid
-       * </pre>
-       *
-       * <code>uint32 mixerThreshold = 5;</code>
-       */
-      public Builder clearMixerThreshold() {
-        
-        mixerThreshold_ = 0;
-        onChanged();
-        return this;
-      }
-
-      private java.util.List<meerkat.protobuf.Voting.BallotQuestion> channelChoiceQuestions_ =
-        java.util.Collections.emptyList();
-      private void ensureChannelChoiceQuestionsIsMutable() {
-        if (!((bitField0_ & 0x00000020) == 0x00000020)) {
-          channelChoiceQuestions_ = new java.util.ArrayList<meerkat.protobuf.Voting.BallotQuestion>(channelChoiceQuestions_);
-          bitField0_ |= 0x00000020;
-         }
-      }
-
-      private com.google.protobuf.RepeatedFieldBuilderV3<
-          meerkat.protobuf.Voting.BallotQuestion, meerkat.protobuf.Voting.BallotQuestion.Builder, meerkat.protobuf.Voting.BallotQuestionOrBuilder> channelChoiceQuestionsBuilder_;
-
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public java.util.List<meerkat.protobuf.Voting.BallotQuestion> getChannelChoiceQuestionsList() {
-        if (channelChoiceQuestionsBuilder_ == null) {
-          return java.util.Collections.unmodifiableList(channelChoiceQuestions_);
-        } else {
-          return channelChoiceQuestionsBuilder_.getMessageList();
-        }
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public int getChannelChoiceQuestionsCount() {
-        if (channelChoiceQuestionsBuilder_ == null) {
-          return channelChoiceQuestions_.size();
-        } else {
-          return channelChoiceQuestionsBuilder_.getCount();
-        }
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public meerkat.protobuf.Voting.BallotQuestion getChannelChoiceQuestions(int index) {
-        if (channelChoiceQuestionsBuilder_ == null) {
-          return channelChoiceQuestions_.get(index);
-        } else {
-          return channelChoiceQuestionsBuilder_.getMessage(index);
-        }
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public Builder setChannelChoiceQuestions(
-          int index, meerkat.protobuf.Voting.BallotQuestion value) {
-        if (channelChoiceQuestionsBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureChannelChoiceQuestionsIsMutable();
-          channelChoiceQuestions_.set(index, value);
-          onChanged();
-        } else {
-          channelChoiceQuestionsBuilder_.setMessage(index, value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public Builder setChannelChoiceQuestions(
-          int index, meerkat.protobuf.Voting.BallotQuestion.Builder builderForValue) {
-        if (channelChoiceQuestionsBuilder_ == null) {
-          ensureChannelChoiceQuestionsIsMutable();
-          channelChoiceQuestions_.set(index, builderForValue.build());
-          onChanged();
-        } else {
-          channelChoiceQuestionsBuilder_.setMessage(index, builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public Builder addChannelChoiceQuestions(meerkat.protobuf.Voting.BallotQuestion value) {
-        if (channelChoiceQuestionsBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureChannelChoiceQuestionsIsMutable();
-          channelChoiceQuestions_.add(value);
-          onChanged();
-        } else {
-          channelChoiceQuestionsBuilder_.addMessage(value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public Builder addChannelChoiceQuestions(
-          int index, meerkat.protobuf.Voting.BallotQuestion value) {
-        if (channelChoiceQuestionsBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureChannelChoiceQuestionsIsMutable();
-          channelChoiceQuestions_.add(index, value);
-          onChanged();
-        } else {
-          channelChoiceQuestionsBuilder_.addMessage(index, value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public Builder addChannelChoiceQuestions(
-          meerkat.protobuf.Voting.BallotQuestion.Builder builderForValue) {
-        if (channelChoiceQuestionsBuilder_ == null) {
-          ensureChannelChoiceQuestionsIsMutable();
-          channelChoiceQuestions_.add(builderForValue.build());
-          onChanged();
-        } else {
-          channelChoiceQuestionsBuilder_.addMessage(builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public Builder addChannelChoiceQuestions(
-          int index, meerkat.protobuf.Voting.BallotQuestion.Builder builderForValue) {
-        if (channelChoiceQuestionsBuilder_ == null) {
-          ensureChannelChoiceQuestionsIsMutable();
-          channelChoiceQuestions_.add(index, builderForValue.build());
-          onChanged();
-        } else {
-          channelChoiceQuestionsBuilder_.addMessage(index, builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public Builder addAllChannelChoiceQuestions(
-          java.lang.Iterable<? extends meerkat.protobuf.Voting.BallotQuestion> values) {
-        if (channelChoiceQuestionsBuilder_ == null) {
-          ensureChannelChoiceQuestionsIsMutable();
-          com.google.protobuf.AbstractMessageLite.Builder.addAll(
-              values, channelChoiceQuestions_);
-          onChanged();
-        } else {
-          channelChoiceQuestionsBuilder_.addAllMessages(values);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public Builder clearChannelChoiceQuestions() {
-        if (channelChoiceQuestionsBuilder_ == null) {
-          channelChoiceQuestions_ = java.util.Collections.emptyList();
-          bitField0_ = (bitField0_ & ~0x00000020);
-          onChanged();
-        } else {
-          channelChoiceQuestionsBuilder_.clear();
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public Builder removeChannelChoiceQuestions(int index) {
-        if (channelChoiceQuestionsBuilder_ == null) {
-          ensureChannelChoiceQuestionsIsMutable();
-          channelChoiceQuestions_.remove(index);
-          onChanged();
-        } else {
-          channelChoiceQuestionsBuilder_.remove(index);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public meerkat.protobuf.Voting.BallotQuestion.Builder getChannelChoiceQuestionsBuilder(
-          int index) {
-        return getChannelChoiceQuestionsFieldBuilder().getBuilder(index);
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public meerkat.protobuf.Voting.BallotQuestionOrBuilder getChannelChoiceQuestionsOrBuilder(
-          int index) {
-        if (channelChoiceQuestionsBuilder_ == null) {
-          return channelChoiceQuestions_.get(index);  } else {
-          return channelChoiceQuestionsBuilder_.getMessageOrBuilder(index);
-        }
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public java.util.List<? extends meerkat.protobuf.Voting.BallotQuestionOrBuilder> 
-           getChannelChoiceQuestionsOrBuilderList() {
-        if (channelChoiceQuestionsBuilder_ != null) {
-          return channelChoiceQuestionsBuilder_.getMessageOrBuilderList();
-        } else {
-          return java.util.Collections.unmodifiableList(channelChoiceQuestions_);
-        }
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public meerkat.protobuf.Voting.BallotQuestion.Builder addChannelChoiceQuestionsBuilder() {
-        return getChannelChoiceQuestionsFieldBuilder().addBuilder(
-            meerkat.protobuf.Voting.BallotQuestion.getDefaultInstance());
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public meerkat.protobuf.Voting.BallotQuestion.Builder addChannelChoiceQuestionsBuilder(
-          int index) {
-        return getChannelChoiceQuestionsFieldBuilder().addBuilder(
-            index, meerkat.protobuf.Voting.BallotQuestion.getDefaultInstance());
-      }
-      /**
-       * <pre>
-       * questions to first indicate the voter's channel
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion channel_choice_questions = 6;</code>
-       */
-      public java.util.List<meerkat.protobuf.Voting.BallotQuestion.Builder> 
-           getChannelChoiceQuestionsBuilderList() {
-        return getChannelChoiceQuestionsFieldBuilder().getBuilderList();
-      }
-      private com.google.protobuf.RepeatedFieldBuilderV3<
-          meerkat.protobuf.Voting.BallotQuestion, meerkat.protobuf.Voting.BallotQuestion.Builder, meerkat.protobuf.Voting.BallotQuestionOrBuilder> 
-          getChannelChoiceQuestionsFieldBuilder() {
-        if (channelChoiceQuestionsBuilder_ == null) {
-          channelChoiceQuestionsBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
-              meerkat.protobuf.Voting.BallotQuestion, meerkat.protobuf.Voting.BallotQuestion.Builder, meerkat.protobuf.Voting.BallotQuestionOrBuilder>(
-                  channelChoiceQuestions_,
-                  ((bitField0_ & 0x00000020) == 0x00000020),
-                  getParentForChildren(),
-                  isClean());
-          channelChoiceQuestions_ = null;
-        }
-        return channelChoiceQuestionsBuilder_;
-      }
-
-      private meerkat.protobuf.Voting.SimpleCategoriesSelectionData selectionData_ = null;
-      private com.google.protobuf.SingleFieldBuilderV3<
-          meerkat.protobuf.Voting.SimpleCategoriesSelectionData, meerkat.protobuf.Voting.SimpleCategoriesSelectionData.Builder, meerkat.protobuf.Voting.SimpleCategoriesSelectionDataOrBuilder> selectionDataBuilder_;
-      /**
-       * <pre>
-       * translating the channel-choice answers to the voter's channel
-       * </pre>
-       *
-       * <code>.meerkat.SimpleCategoriesSelectionData selection_data = 7;</code>
-       */
-      public boolean hasSelectionData() {
-        return selectionDataBuilder_ != null || selectionData_ != null;
-      }
-      /**
-       * <pre>
-       * translating the channel-choice answers to the voter's channel
-       * </pre>
-       *
-       * <code>.meerkat.SimpleCategoriesSelectionData selection_data = 7;</code>
-       */
-      public meerkat.protobuf.Voting.SimpleCategoriesSelectionData getSelectionData() {
-        if (selectionDataBuilder_ == null) {
-          return selectionData_ == null ? meerkat.protobuf.Voting.SimpleCategoriesSelectionData.getDefaultInstance() : selectionData_;
-        } else {
-          return selectionDataBuilder_.getMessage();
-        }
-      }
-      /**
-       * <pre>
-       * translating the channel-choice answers to the voter's channel
-       * </pre>
-       *
-       * <code>.meerkat.SimpleCategoriesSelectionData selection_data = 7;</code>
-       */
-      public Builder setSelectionData(meerkat.protobuf.Voting.SimpleCategoriesSelectionData value) {
-        if (selectionDataBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          selectionData_ = value;
-          onChanged();
-        } else {
-          selectionDataBuilder_.setMessage(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * translating the channel-choice answers to the voter's channel
-       * </pre>
-       *
-       * <code>.meerkat.SimpleCategoriesSelectionData selection_data = 7;</code>
-       */
-      public Builder setSelectionData(
-          meerkat.protobuf.Voting.SimpleCategoriesSelectionData.Builder builderForValue) {
-        if (selectionDataBuilder_ == null) {
-          selectionData_ = builderForValue.build();
-          onChanged();
-        } else {
-          selectionDataBuilder_.setMessage(builderForValue.build());
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * translating the channel-choice answers to the voter's channel
-       * </pre>
-       *
-       * <code>.meerkat.SimpleCategoriesSelectionData selection_data = 7;</code>
-       */
-      public Builder mergeSelectionData(meerkat.protobuf.Voting.SimpleCategoriesSelectionData value) {
-        if (selectionDataBuilder_ == null) {
-          if (selectionData_ != null) {
-            selectionData_ =
-              meerkat.protobuf.Voting.SimpleCategoriesSelectionData.newBuilder(selectionData_).mergeFrom(value).buildPartial();
-          } else {
-            selectionData_ = value;
-          }
-          onChanged();
-        } else {
-          selectionDataBuilder_.mergeFrom(value);
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * translating the channel-choice answers to the voter's channel
-       * </pre>
-       *
-       * <code>.meerkat.SimpleCategoriesSelectionData selection_data = 7;</code>
-       */
-      public Builder clearSelectionData() {
-        if (selectionDataBuilder_ == null) {
-          selectionData_ = null;
-          onChanged();
-        } else {
-          selectionData_ = null;
-          selectionDataBuilder_ = null;
-        }
-
-        return this;
-      }
-      /**
-       * <pre>
-       * translating the channel-choice answers to the voter's channel
-       * </pre>
-       *
-       * <code>.meerkat.SimpleCategoriesSelectionData selection_data = 7;</code>
-       */
-      public meerkat.protobuf.Voting.SimpleCategoriesSelectionData.Builder getSelectionDataBuilder() {
-        
-        onChanged();
-        return getSelectionDataFieldBuilder().getBuilder();
-      }
-      /**
-       * <pre>
-       * translating the channel-choice answers to the voter's channel
-       * </pre>
-       *
-       * <code>.meerkat.SimpleCategoriesSelectionData selection_data = 7;</code>
-       */
-      public meerkat.protobuf.Voting.SimpleCategoriesSelectionDataOrBuilder getSelectionDataOrBuilder() {
-        if (selectionDataBuilder_ != null) {
-          return selectionDataBuilder_.getMessageOrBuilder();
-        } else {
-          return selectionData_ == null ?
-              meerkat.protobuf.Voting.SimpleCategoriesSelectionData.getDefaultInstance() : selectionData_;
-        }
-      }
-      /**
-       * <pre>
-       * translating the channel-choice answers to the voter's channel
-       * </pre>
-       *
-       * <code>.meerkat.SimpleCategoriesSelectionData selection_data = 7;</code>
-       */
-      private com.google.protobuf.SingleFieldBuilderV3<
-          meerkat.protobuf.Voting.SimpleCategoriesSelectionData, meerkat.protobuf.Voting.SimpleCategoriesSelectionData.Builder, meerkat.protobuf.Voting.SimpleCategoriesSelectionDataOrBuilder> 
-          getSelectionDataFieldBuilder() {
-        if (selectionDataBuilder_ == null) {
-          selectionDataBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              meerkat.protobuf.Voting.SimpleCategoriesSelectionData, meerkat.protobuf.Voting.SimpleCategoriesSelectionData.Builder, meerkat.protobuf.Voting.SimpleCategoriesSelectionDataOrBuilder>(
-                  getSelectionData(),
-                  getParentForChildren(),
-                  isClean());
-          selectionData_ = null;
-        }
-        return selectionDataBuilder_;
-      }
-
-      private java.util.List<meerkat.protobuf.Voting.BallotQuestion> raceQuestions_ =
-        java.util.Collections.emptyList();
-      private void ensureRaceQuestionsIsMutable() {
-        if (!((bitField0_ & 0x00000080) == 0x00000080)) {
-          raceQuestions_ = new java.util.ArrayList<meerkat.protobuf.Voting.BallotQuestion>(raceQuestions_);
-          bitField0_ |= 0x00000080;
-         }
-      }
-
-      private com.google.protobuf.RepeatedFieldBuilderV3<
-          meerkat.protobuf.Voting.BallotQuestion, meerkat.protobuf.Voting.BallotQuestion.Builder, meerkat.protobuf.Voting.BallotQuestionOrBuilder> raceQuestionsBuilder_;
-
-      /**
-       * <pre>
-       * Candidate list (or other question format)
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-       */
-      public java.util.List<meerkat.protobuf.Voting.BallotQuestion> getRaceQuestionsList() {
-        if (raceQuestionsBuilder_ == null) {
-          return java.util.Collections.unmodifiableList(raceQuestions_);
-        } else {
-          return raceQuestionsBuilder_.getMessageList();
-        }
-      }
-      /**
-       * <pre>
-       * Candidate list (or other question format)
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-       */
-      public int getRaceQuestionsCount() {
-        if (raceQuestionsBuilder_ == null) {
-          return raceQuestions_.size();
-        } else {
-          return raceQuestionsBuilder_.getCount();
-        }
-      }
-      /**
-       * <pre>
-       * Candidate list (or other question format)
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-       */
-      public meerkat.protobuf.Voting.BallotQuestion getRaceQuestions(int index) {
-        if (raceQuestionsBuilder_ == null) {
-          return raceQuestions_.get(index);
-        } else {
-          return raceQuestionsBuilder_.getMessage(index);
-        }
-      }
-      /**
-       * <pre>
-       * Candidate list (or other question format)
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-       */
-      public Builder setRaceQuestions(
-          int index, meerkat.protobuf.Voting.BallotQuestion value) {
-        if (raceQuestionsBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureRaceQuestionsIsMutable();
-          raceQuestions_.set(index, value);
-          onChanged();
-        } else {
-          raceQuestionsBuilder_.setMessage(index, value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Candidate list (or other question format)
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-       */
-      public Builder setRaceQuestions(
-          int index, meerkat.protobuf.Voting.BallotQuestion.Builder builderForValue) {
-        if (raceQuestionsBuilder_ == null) {
-          ensureRaceQuestionsIsMutable();
-          raceQuestions_.set(index, builderForValue.build());
-          onChanged();
-        } else {
-          raceQuestionsBuilder_.setMessage(index, builderForValue.build());
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Candidate list (or other question format)
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-       */
-      public Builder addRaceQuestions(meerkat.protobuf.Voting.BallotQuestion value) {
-        if (raceQuestionsBuilder_ == null) {
-          if (value == null) {
-            throw new NullPointerException();
-          }
-          ensureRaceQuestionsIsMutable();
-          raceQuestions_.add(value);
-          onChanged();
-        } else {
-          raceQuestionsBuilder_.addMessage(value);
-        }
-        return this;
-      }
-      /**
-       * <pre>
-       * Candidate list (or other question format)
-       * </pre>
-       *
-       * <code>repeated .meerkat.BallotQuestion race_questions = 8;</code>
-       */
-      public Builder addRaceQuestions(
-          int index, meerkat.protobuf.Voting.BallotQuestion value) {
-        if (raceQuestionsBuilder_ == null) {
-          if (value == null) {
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-      "tion\030\001 \001(\0132\022.meerkat.UIElement\022\025\n\rcluste" +
-      "r_index\030\002 \003(\005\"\"\n\014BallotAnswer\022\022\n\006answer\030" +
-      "\001 \003(\022B\002\020\001\"l\n\017PlaintextBallot\022\025\n\rserial_n" +
-      "umber\030\001 \001(\004\022\032\n\022channel_identifier\030\002 \001(\014\022" +
-      "&\n\007answers\030\003 \003(\0132\025.meerkat.BallotAnswer\"" +
-      "_\n\017EncryptedBallot\022\025\n\rserial_number\030\001 \001(" +
-      "\004\0225\n\004data\030\002 \001(\0132\'.meerkat.Rerandomizable" +
-      "EncryptedMessage\"r\n\025SignedEncryptedBallo" +
-      "t\0222\n\020encrypted_ballot\030\001 \001(\0132\030.meerkat.En" +
-      "cryptedBallot\022%\n\tsignature\030\002 \001(\0132\022.meerk",
-      "at.Signature\"\264\001\n\rBallotSecrets\0222\n\020plaint" +
-      "ext_ballot\030\001 \001(\0132\030.meerkat.PlaintextBall" +
-      "ot\022<\n\025encryption_randomness\030\002 \001(\0132\035.meer" +
-      "kat.EncryptionRandomness\0221\n\005proof\030\003 \001(\0132" +
-      "\".meerkat.RandomnessGenerationProof\"M\n\013B" +
-      "oothParams\022>\n\023pscVerificationKeys\030\001 \003(\0132" +
-      "!.meerkat.SignatureVerificationKey\"\250\001\n\023B" +
-      "oothSystemMessages\022G\n\016system_message\030\001 \003" +
-      "(\0132/.meerkat.BoothSystemMessages.SystemM" +
-      "essageEntry\032H\n\022SystemMessageEntry\022\013\n\003key",
-      "\030\001 \001(\t\022!\n\005value\030\002 \001(\0132\022.meerkat.UIElemen" +
-      "t:\0028\001\",\n\034BallotAnswerTranslationTable\022\014\n" +
-      "\004data\030\001 \001(\014\"P\n\031BulletinBoardClientParams" +
-      "\022\034\n\024bulletinBoardAddress\030\001 \003(\t\022\025\n\rminRed" +
-      "undancy\030\002 \001(\002\"\377\003\n\016ElectionParams\022B\n\027trus" +
-      "teeVerificationKeys\030\001 \003(\0132!.meerkat.Sign" +
-      "atureVerificationKey\022!\n\031trusteeSignature" +
-      "Threshold\030\002 \001(\r\0229\n\023ballotEncryptionKey\030\003" +
-      " \001(\0132\034.meerkat.EncryptionPublicKey\022@\n\025mi" +
-      "xerVerificationKeys\030\004 \003(\0132!.meerkat.Sign",
-      "atureVerificationKey\022\026\n\016mixerThreshold\030\005" +
-      " \001(\r\0229\n\030channel_choice_questions\030\006 \003(\0132\027" +
-      ".meerkat.BallotQuestion\022>\n\016selection_dat" +
-      "a\030\007 \001(\0132&.meerkat.SimpleCategoriesSelect" +
-      "ionData\022/\n\016race_questions\030\010 \003(\0132\027.meerka" +
-      "t.BallotQuestion\022E\n\031bulletinBoardClientP" +
-      "arams\030\t \001(\0132\".meerkat.BulletinBoardClien" +
-      "tParams\"!\n\010Category\022\025\n\rquestionIndex\030\001 \003" +
-      "(\r\"6\n\017CategoryChooser\022#\n\010category\030\001 \003(\0132" +
-      "\021.meerkat.Category\"~\n\035SimpleCategoriesSe",
-      "lectionData\022*\n\017shared_defaults\030\001 \001(\0132\021.m" +
-      "eerkat.Category\0221\n\017categoryChooser\030\002 \003(\013" +
-      "2\030.meerkat.CategoryChooser*3\n\021UIElementD" +
-      "ataType\022\010\n\004TEXT\020\000\022\t\n\005IMAGE\020\001\022\t\n\005VOICE\020\002*" +
-      "F\n\014QuestionType\022\023\n\017MULTIPLE_CHOICE\020\000\022\026\n\022" +
-      "MULTIPLE_SELECTION\020\001\022\t\n\005ORDER\020\002B\022\n\020meerk" +
-      "at.protobufb\006proto3"
-    };
-    com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
-        new com.google.protobuf.Descriptors.FileDescriptor.    InternalDescriptorAssigner() {
-          public com.google.protobuf.ExtensionRegistry assignDescriptors(
-              com.google.protobuf.Descriptors.FileDescriptor root) {
-            descriptor = root;
-            return null;
-          }
-        };
-    com.google.protobuf.Descriptors.FileDescriptor
-      .internalBuildGeneratedFileFrom(descriptorData,
-        new com.google.protobuf.Descriptors.FileDescriptor[] {
-          meerkat.protobuf.Crypto.getDescriptor(),
-        }, assigner);
-    internal_static_meerkat_UIElement_descriptor =
-      getDescriptor().getMessageTypes().get(0);
-    internal_static_meerkat_UIElement_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_UIElement_descriptor,
-        new java.lang.String[] { "Type", "Data", });
-    internal_static_meerkat_BallotQuestion_descriptor =
-      getDescriptor().getMessageTypes().get(1);
-    internal_static_meerkat_BallotQuestion_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_BallotQuestion_descriptor,
-        new java.lang.String[] { "IsMandatory", "Question", "Description", "Answer", });
-    internal_static_meerkat_QuestionCluster_descriptor =
-      getDescriptor().getMessageTypes().get(2);
-    internal_static_meerkat_QuestionCluster_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_QuestionCluster_descriptor,
-        new java.lang.String[] { "ClusterDescription", "QuestionIndex", });
-    internal_static_meerkat_Channel_descriptor =
-      getDescriptor().getMessageTypes().get(3);
-    internal_static_meerkat_Channel_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_Channel_descriptor,
-        new java.lang.String[] { "ChannelDescription", "ClusterIndex", });
-    internal_static_meerkat_BallotAnswer_descriptor =
-      getDescriptor().getMessageTypes().get(4);
-    internal_static_meerkat_BallotAnswer_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_BallotAnswer_descriptor,
-        new java.lang.String[] { "Answer", });
-    internal_static_meerkat_PlaintextBallot_descriptor =
-      getDescriptor().getMessageTypes().get(5);
-    internal_static_meerkat_PlaintextBallot_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_PlaintextBallot_descriptor,
-        new java.lang.String[] { "SerialNumber", "ChannelIdentifier", "Answers", });
-    internal_static_meerkat_EncryptedBallot_descriptor =
-      getDescriptor().getMessageTypes().get(6);
-    internal_static_meerkat_EncryptedBallot_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_EncryptedBallot_descriptor,
-        new java.lang.String[] { "SerialNumber", "Data", });
-    internal_static_meerkat_SignedEncryptedBallot_descriptor =
-      getDescriptor().getMessageTypes().get(7);
-    internal_static_meerkat_SignedEncryptedBallot_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_SignedEncryptedBallot_descriptor,
-        new java.lang.String[] { "EncryptedBallot", "Signature", });
-    internal_static_meerkat_BallotSecrets_descriptor =
-      getDescriptor().getMessageTypes().get(8);
-    internal_static_meerkat_BallotSecrets_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_BallotSecrets_descriptor,
-        new java.lang.String[] { "PlaintextBallot", "EncryptionRandomness", "Proof", });
-    internal_static_meerkat_BoothParams_descriptor =
-      getDescriptor().getMessageTypes().get(9);
-    internal_static_meerkat_BoothParams_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_BoothParams_descriptor,
-        new java.lang.String[] { "PscVerificationKeys", });
-    internal_static_meerkat_BoothSystemMessages_descriptor =
-      getDescriptor().getMessageTypes().get(10);
-    internal_static_meerkat_BoothSystemMessages_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_BoothSystemMessages_descriptor,
-        new java.lang.String[] { "SystemMessage", });
-    internal_static_meerkat_BoothSystemMessages_SystemMessageEntry_descriptor =
-      internal_static_meerkat_BoothSystemMessages_descriptor.getNestedTypes().get(0);
-    internal_static_meerkat_BoothSystemMessages_SystemMessageEntry_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_BoothSystemMessages_SystemMessageEntry_descriptor,
-        new java.lang.String[] { "Key", "Value", });
-    internal_static_meerkat_BallotAnswerTranslationTable_descriptor =
-      getDescriptor().getMessageTypes().get(11);
-    internal_static_meerkat_BallotAnswerTranslationTable_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_BallotAnswerTranslationTable_descriptor,
-        new java.lang.String[] { "Data", });
-    internal_static_meerkat_BulletinBoardClientParams_descriptor =
-      getDescriptor().getMessageTypes().get(12);
-    internal_static_meerkat_BulletinBoardClientParams_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_BulletinBoardClientParams_descriptor,
-        new java.lang.String[] { "BulletinBoardAddress", "MinRedundancy", });
-    internal_static_meerkat_ElectionParams_descriptor =
-      getDescriptor().getMessageTypes().get(13);
-    internal_static_meerkat_ElectionParams_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_ElectionParams_descriptor,
-        new java.lang.String[] { "TrusteeVerificationKeys", "TrusteeSignatureThreshold", "BallotEncryptionKey", "MixerVerificationKeys", "MixerThreshold", "ChannelChoiceQuestions", "SelectionData", "RaceQuestions", "BulletinBoardClientParams", });
-    internal_static_meerkat_Category_descriptor =
-      getDescriptor().getMessageTypes().get(14);
-    internal_static_meerkat_Category_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_Category_descriptor,
-        new java.lang.String[] { "QuestionIndex", });
-    internal_static_meerkat_CategoryChooser_descriptor =
-      getDescriptor().getMessageTypes().get(15);
-    internal_static_meerkat_CategoryChooser_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_CategoryChooser_descriptor,
-        new java.lang.String[] { "Category", });
-    internal_static_meerkat_SimpleCategoriesSelectionData_descriptor =
-      getDescriptor().getMessageTypes().get(16);
-    internal_static_meerkat_SimpleCategoriesSelectionData_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_meerkat_SimpleCategoriesSelectionData_descriptor,
-        new java.lang.String[] { "SharedDefaults", "CategoryChooser", });
-    meerkat.protobuf.Crypto.getDescriptor();
-  }
-
-  // @@protoc_insertion_point(outer_class_scope)
-}
diff --git a/android-scanner/src/main/java/meerkat/rest/Constants.java b/android-scanner/src/main/java/meerkat/rest/Constants.java
deleted file mode 100644
index 2c04248..0000000
--- a/android-scanner/src/main/java/meerkat/rest/Constants.java
+++ /dev/null
@@ -1,8 +0,0 @@
-package meerkat.rest;
-
-/**
- * Created by talm on 10/11/15.
- */
-public interface Constants {
-    public static final String MEDIATYPE_PROTOBUF = "application/x-protobuf";
-}
diff --git a/build.gradle-template b/build.gradle-template
index 9832d46..6b5c5df 100644
--- a/build.gradle-template
+++ b/build.gradle-template
@@ -182,13 +182,15 @@ repositories {
         mavenCentral()
 }
 
-task "info" << {
+task "info"  {
+    doLast {
         println "Project: ${project.name}"
-println "Description: ${project.description}"
+        println "Description: ${project.description}"
         println "--------------------------"
         println "GroupId: $groupId"
         println "Version: $version (${isSnapshot ? 'snapshot' : 'release'})"
         println ""
+    }
 }
 info.description 'Print some information about project parameters'
 
diff --git a/meerkat-common/build.gradle b/meerkat-common/build.gradle
index e019d59..680f01b 100644
--- a/meerkat-common/build.gradle
+++ b/meerkat-common/build.gradle
@@ -15,6 +15,11 @@ apply plugin: 'maven-publish'
 
 mainClassName='Demo'
 
+// We may need to use this code from Java.
+targetCompatibility = '1.7'
+sourceCompatibility = '1.7'
+
+
 // Is this a snapshot version?
 ext { isSnapshot = false } 
 
diff --git a/polling-station/build.gradle b/polling-station/build.gradle
index bf1c1a9..f397d60 100644
--- a/polling-station/build.gradle
+++ b/polling-station/build.gradle
@@ -41,6 +41,7 @@ dependencies {
     // Meerkat common
     compile project(':meerkat-common')
     compile project(':restful-api-common')
+    compile project(':scanner-api-common')
 
     // Servlets
     compile 'org.eclipse.jetty:jetty-server:9.3.+'
diff --git a/restful-api-common/build.gradle b/restful-api-common/build.gradle
index 07ef0af..9cd71e6 100644
--- a/restful-api-common/build.gradle
+++ b/restful-api-common/build.gradle
@@ -14,6 +14,11 @@ apply plugin: 'idea'
 
 apply plugin: 'maven-publish'
 
+// We may need to use this code from Java.
+targetCompatibility = '1.7'
+sourceCompatibility = '1.7'
+
+
 // Is this a snapshot version?
 ext { isSnapshot = false } 
 
diff --git a/scanner-api-common/build.gradle b/scanner-api-common/build.gradle
new file mode 100644
index 0000000..a91acd0
--- /dev/null
+++ b/scanner-api-common/build.gradle
@@ -0,0 +1,233 @@
+
+plugins {
+  id "us.kirchmeier.capsule" version "1.0.2"
+  id 'com.google.protobuf' version '0.8.0'
+}
+
+apply plugin: 'java'
+apply plugin: 'eclipse'
+apply plugin: 'idea'
+
+apply plugin: 'maven-publish'
+
+// Uncomment the lines below to define an application
+// (this will also allow you to build a "fatCapsule" which includes
+// the entire application, including all dependencies in a single jar)
+//apply plugin: 'application'
+//mainClassName='your.main.ApplicationClass'
+
+
+// We may need to use this code from Java.
+targetCompatibility = '1.7'
+sourceCompatibility = '1.7'
+
+
+// Is this a snapshot version?
+ext { isSnapshot = false } 
+
+ext {
+        groupId = 'org.factcenter.meerkat'
+        nexusRepository = "https://cs.idc.ac.il/nexus/content/groups/${isSnapshot ? 'unstable' : 'public'}/"
+        
+        // Credentials for IDC nexus repositories (needed only for using unstable repositories and publishing)
+        // Should be set in ${HOME}/.gradle/gradle.properties
+
+        // Credentials for publishing repositories
+        publishRepository = "https://cs.idc.ac.il/nexus/content/repositories/${project.isSnapshot ? 'snapshots' : 'releases'}"
+        publishUser =  project.hasProperty('publishUser') ? project.property('publishUser') : ""
+        publishPassword = project.hasProperty('publishPassword') ? project.property('publishPassword') : ""
+}
+
+description = "Common files for polling-station scanner client API"
+
+// Your project version
+version = "0.0"
+
+version += "${isSnapshot ? '-SNAPSHOT' : ''}"
+
+
+dependencies {
+    // Meerkat common
+    compile project(':meerkat-common')
+    compile project(':restful-api-common')
+
+    // Logging
+    compile 'org.slf4j:slf4j-api:1.7.7'
+    runtime 'ch.qos.logback:logback-classic:1.1.2'
+    runtime 'ch.qos.logback:logback-core:1.1.2'
+
+    // Google protobufs
+    compile 'com.google.protobuf:protobuf-java:3.+'
+
+    testCompile 'junit:junit:4.+'
+
+    runtime 'org.codehaus.groovy:groovy:2.4.+'
+}
+
+
+/*==== You probably don't have to edit below this line =======*/
+
+// Setup test configuration that can appear as a dependency in
+// other subprojects
+configurations {
+    testOutput.extendsFrom (testCompile)
+}
+
+task testJar(type: Jar, dependsOn: testClasses) {
+    classifier = 'tests'
+    from sourceSets.test.output
+}
+
+artifacts {
+    testOutput testJar
+}
+
+// The run task added by the application plugin
+// is also of type JavaExec.
+tasks.withType(JavaExec) {
+    // Assign all Java system properties from
+    // the command line to the JavaExec task.
+    systemProperties System.properties
+}
+
+
+protobuf {
+    // Configure the protoc executable
+    protoc {
+    // Download from repositories
+        artifact = 'com.google.protobuf:protoc:3.+'
+    }
+}
+
+
+idea {
+    module {
+        project.sourceSets.each { sourceSet ->
+
+            def srcDir = "${protobuf.generatedFilesBaseDir}/$sourceSet.name/java"
+
+            println "Adding $srcDir"
+            // add protobuf generated sources to generated source dir.
+            if ("test".equals(sourceSet.name)) {
+                testSourceDirs += file(srcDir)
+            } else {
+                sourceDirs += file(srcDir)
+            }
+            generatedSourceDirs += file(srcDir)
+
+        }
+
+	    // Don't exclude build directory
+	    excludeDirs -= file(buildDir)
+    }
+}
+
+
+/*===================================
+ *        "Fat" Build targets
+ *===================================*/
+
+
+if (project.hasProperty('mainClassName') && (mainClassName != null)) {
+
+    task mavenCapsule(type: MavenCapsule) {
+        description = "Generate a capsule jar that automatically downloads and caches dependencies when run."
+        applicationClass mainClassName
+        destinationDir = buildDir
+    }
+
+    task fatCapsule(type: FatCapsule) {
+        description = "Generate a single capsule jar containing everything. Use -Pfatmain=... to override main class"
+
+        destinationDir = buildDir
+
+        def fatMain
+        
+        if (this.hasProperty('fatmain')) {
+            fatMain = fatmain 
+            appendix = "fat-${fatMain}"
+        } else {
+            fatMain = mainClassName
+            appendix = "fat"
+        }
+
+        applicationClass fatMain
+
+        def testJar = this.hasProperty('test')
+
+        if (testJar) {
+            from sourceSets.test.output
+        }
+    }
+}
+
+
+/*===================================
+ *        Repositories
+ *===================================*/
+
+repositories {
+        
+        // Prefer the local nexus repository (it may have 3rd party artifacts not found in mavenCentral)
+        maven { 
+            url nexusRepository
+            
+            if (isSnapshot) {
+                credentials { username 
+                    password 
+
+                    username nexusUser
+                    password nexusPassword 
+                }
+            }
+        }
+
+        // Use local maven repository
+        mavenLocal()
+
+        // Use 'maven central' for other dependencies.
+        mavenCentral()
+}
+
+task "info"  {
+    doLast {
+        println "Project: ${project.name}"
+        println "Description: ${project.description}"
+        println "--------------------------"
+        println "GroupId: $groupId"
+        println "Version: $version (${isSnapshot ? 'snapshot' : 'release'})"
+        println ""
+    }
+}
+info.description 'Print some information about project parameters'
+
+/*===================================
+ *        Publishing
+ *===================================*/
+
+publishing {
+    publications {
+        mavenJava(MavenPublication) {
+            groupId project.groupId
+            pom.withXml {
+                asNode().appendNode('description', project.description)
+            }
+            from project.components.java
+
+        }
+    }
+    repositories {
+        maven {
+            url publishRepository
+            credentials { username 
+                password 
+
+                username publishUser
+                password publishPassword
+            }
+        }
+    }
+}
+
+
+
diff --git a/scanner-api-common/gradlew b/scanner-api-common/gradlew
new file mode 120000
index 0000000..502f5a2
--- /dev/null
+++ b/scanner-api-common/gradlew
@@ -0,0 +1 @@
+../gradlew
\ No newline at end of file
diff --git a/polling-station/src/main/java/meerkat/pollingstation/ScannerClientAPI.java b/scanner-api-common/src/main/java/meerkat/pollingstation/ScannerClientAPI.java
similarity index 100%
rename from polling-station/src/main/java/meerkat/pollingstation/ScannerClientAPI.java
rename to scanner-api-common/src/main/java/meerkat/pollingstation/ScannerClientAPI.java
diff --git a/settings.gradle b/settings.gradle
index 0ce23a1..e541b14 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -3,6 +3,7 @@ include 'voting-booth'
 include 'bulletin-board-server'
 include 'polling-station'
 include 'restful-api-common'
+include 'scanner-api-common'
 include 'mixer'
 include 'bulletin-board-client'
 include 'distributed-key-generation'