Pdelvo.Minecraft.Network.AsnKeyParser.ParseDSAPrivateKey C# (CSharp) Method

        internal DSAParameters ParseDSAPrivateKey()
        {
            var parameters = new DSAParameters ();

            // Current value
            byte[] value = null;

            // Current Position
            int position = parser.CurrentPosition ();
            // Sanity Checks
            int length = 0;

            // Ignore Sequence - PrivateKeyInfo
            length = parser.NextSequence ();
            if (length != parser.RemainingBytes ())
            {
                var sb = new StringBuilder("Incorrect Sequence Size. ");
                sb.AppendFormat("Specified: {0}, Remaining: {1}",
                                length.ToString(CultureInfo.InvariantCulture),
                                parser.RemainingBytes ().ToString(CultureInfo.InvariantCulture));
                throw new BerDecodeException(sb.ToString (), position);
            }

            // Checkpoint
            position = parser.CurrentPosition ();
            // Version
            value = parser.NextInteger ();
            if (0x00 != value[0])
            {
                throw new BerDecodeException("Incorrect PrivateKeyInfo Version", position);
            }

            // Checkpoint
            position = parser.CurrentPosition ();

            // Ignore Sequence - AlgorithmIdentifier
            length = parser.NextSequence ();
            if (length > parser.RemainingBytes ())
            {
                var sb = new StringBuilder("Incorrect AlgorithmIdentifier Size. ");
                sb.AppendFormat("Specified: {0}, Remaining: {1}",
                                length.ToString(CultureInfo.InvariantCulture),
                                parser.RemainingBytes ().ToString(CultureInfo.InvariantCulture));
                throw new BerDecodeException(sb.ToString (), position);
            }

            // Checkpoint
            position = parser.CurrentPosition ();
            // Grab the OID
            value = parser.NextOID ();
            byte[] oid = {0x2a, 0x86, 0x48, 0xce, 0x38, 0x04, 0x01};
            if (!EqualOid(value, oid))
            {
                throw new BerDecodeException("Expected OID 1.2.840.10040.4.1", position);
            }

            // Checkpoint
            position = parser.CurrentPosition ();

            // Ignore Sequence - DSS-Params
            length = parser.NextSequence ();
            if (length > parser.RemainingBytes ())
            {
                var sb = new StringBuilder("Incorrect DSS-Params Size. ");
                sb.AppendFormat("Specified: {0}, Remaining: {1}",
                                length.ToString(CultureInfo.InvariantCulture),
                                parser.RemainingBytes ().ToString(CultureInfo.InvariantCulture));
                throw new BerDecodeException(sb.ToString (), position);
            }

            // Next three are curve parameters
            parameters.P = TrimLeadingZero(parser.NextInteger ());
            parameters.Q = TrimLeadingZero(parser.NextInteger ());
            parameters.G = TrimLeadingZero(parser.NextInteger ());

            // Ignore OctetString - PrivateKey
            parser.NextOctetString ();

            // Private Key
            parameters.X = TrimLeadingZero(parser.NextInteger ());

            Debug.Assert(0 == parser.RemainingBytes ());

            return parameters;
        }
    }