public ElGamalAbstractCipher(ElGamalKeyStruct p_key_struct)
{
o_key_struct = p_key_struct;
o_plaintext_blocksize = p_key_struct.getPlaintextBlocksize();
o_ciphertext_blocksize = p_key_struct.getCiphertextBlocksize();
o_block_size = o_plaintext_blocksize;
}
public ElGamalAbstractCipher(ElGamalKeyStruct p_key_struct)
{
// set the key details
o_key_struct = p_key_struct;
// calculate the blocksizes
o_plaintext_blocksize = p_key_struct.getPlaintextBlocksize();
o_ciphertext_blocksize = p_key_struct.getCiphertextBlocksize();
// set the default block for plaintext, which is suitable for encryption
o_block_size = o_plaintext_blocksize;
}