コード例 #1
0
        public SenderKeyMessage(uint keyId, uint iteration, byte[] ciphertext, IEcPrivateKey signatureKey)
        {
            byte[] version = { ByteUtil.IntsToByteHighAndLow((int)CurrentVersion, (int)CurrentVersion) };
            byte[] message = new SenderKeyMessage
            {
                Id         = keyId,
                Iteration  = iteration,
                Ciphertext = ByteString.CopyFrom(ciphertext),
            }.ToByteArray();

            byte[] signature = GetSignature(signatureKey, ByteUtil.Combine(version, message));

            _serialized     = ByteUtil.Combine(version, message, signature);
            _messageVersion = CurrentVersion;
            _keyId          = keyId;
            _iteration      = iteration;
            _ciphertext     = ciphertext;
        }
コード例 #2
0
        public SenderKeyMessage(byte[] serialized)
        {
            try
            {
                byte[][] messageParts = ByteUtil.Split(serialized, 1, serialized.Length - 1 - SignatureLength, SignatureLength);
                byte     version      = messageParts[0][0];
                byte[]   message      = messageParts[1];
                byte[]   signature    = messageParts[2];

                if (ByteUtil.HighBitsToInt(version) < 3)
                {
                    throw new LegacyMessageException("Legacy message: " + ByteUtil.HighBitsToInt(version));
                }

                if (ByteUtil.HighBitsToInt(version) > CurrentVersion)
                {
                    throw new InvalidMessageException("Unknown version: " + ByteUtil.HighBitsToInt(version));
                }

                SenderKeyMessage senderKeyMessage = Parser.ParseFrom(message);

                if (senderKeyMessage.IdOneofCase == IdOneofOneofCase.None ||
                    senderKeyMessage.IterationOneofCase == IterationOneofOneofCase.None ||
                    senderKeyMessage.CiphertextOneofCase == CiphertextOneofOneofCase.None)
                {
                    throw new InvalidMessageException("Incomplete message.");
                }

                _serialized     = serialized;
                _messageVersion = (uint)ByteUtil.HighBitsToInt(version);
                _keyId          = senderKeyMessage.Id;
                _iteration      = senderKeyMessage.Iteration;
                _ciphertext     = senderKeyMessage.Ciphertext.ToByteArray();
            }
            catch (/*InvalidProtocolBufferException | Parse*/ Exception e)
            {
                throw new InvalidMessageException(e);
            }
        }