Пример #1
0
        public bool Verify(SignedMessage message)
        {
            var r = new byte[32];
            var s = new byte[32];

            Buffer.BlockCopy(message.SignatureBytes, 1, r, 0, 32);
            Buffer.BlockCopy(message.SignatureBytes, 33, s, 0, 32);
            var recId = message.SignatureBytes[0] - 27;

            var magicData   = VariableLengthEncoding.GetVariableLengthStringBytes("Bitcoin Signed Message:\n");
            var messageData = VariableLengthEncoding.GetVariableLengthStringBytes(message.Message);

            var data = new byte[magicData.Length + messageData.Length];

            Buffer.BlockCopy(magicData, 0, data, 0, magicData.Length);
            Buffer.BlockCopy(messageData, 0, data, magicData.Length, messageData.Length);

            var hash = SHA256.DoubleHash(data);

            var point = signer.RecoverFromSignature(hash, r.ToBigIntegerUnsigned(true), s.ToBigIntegerUnsigned(true), recId);

            var pubKeyHash   = Hash160.Hash(point.EncodePoint(false));
            var addressBytes = new byte[pubKeyHash.Length + 1];

            Buffer.BlockCopy(pubKeyHash, 0, addressBytes, 1, pubKeyHash.Length);

            var address = Base58.EncodeWithCheckSum(addressBytes);

            if (address == message.Address)
            {
                return(true);
            }
            return(false);
        }
Пример #2
0
        public static string GetBitcoinAddress(this ECPoint publicKey, bool compressed = true)
        {
            var pubKeyHash = Hash160.Hash(publicKey.EncodePoint(compressed));

            byte[] addressBytes = new byte[pubKeyHash.Length + 1];
            Buffer.BlockCopy(pubKeyHash, 0, addressBytes, 1, pubKeyHash.Length);
            return(Base58.EncodeWithCheckSum(addressBytes));
        }