package necessary;

import meerkat.protobuf.ConcreteCrypto;
import meerkat.protobuf.Crypto;

import com.google.protobuf.ByteString;

public interface General {

    /*
        given RerandomizableEncryptedMessage returns an equivalent ElGamalCiphertext
     */
    ConcreteCrypto.ElGamalCiphertext calcRerandomizable2ElGamal(Crypto.RerandomizableEncryptedMessage enc);


    /*
        modulo operation over ByteString
     */
    ByteString mod(ByteString dividend, ByteString divisor);

    /*
        addition operation over ByteString
     */
    ByteString add(ByteString a, ByteString b);

    /*
       subtraction operation over ByteString
    */
    ByteString sub(ByteString Subtraction, ByteString subtrahend);


    /*
       multiplication operation over ByteString
    */
    ByteString mul(ByteString a, ByteString b);

    /*
        hash operation over ByteString
     */
    ByteString hash(ByteString... arr);
}