BaseCipherSuitePlugin.SignatureAlgorithmDSA.DERDecodeVector C# (CSharp) Метод

        private static byte[] DERDecodeVector(byte[] input, int idx, out int consumed)
        {
            int length;
            if (input[idx] < 128) {
                length = input[idx];
                consumed = 1+length;
                idx += 1;
            } else if (input[idx] == 0x81) {
                length = input[idx+1];
                consumed = 2+length;
                idx += 2;
            } else if (input[idx] == 0x82) {
                length = (input[idx+1] << 8) | input[idx+2];
                consumed = 3+length;
                idx += 3;
            } else {
                throw new Exception("Unsupported DER vector length");
            }

            byte[] ret = new byte[length];
            Buffer.BlockCopy(input, idx, ret, 0, ret.Length);
            return ret;
        }