iTextSharp.text.pdf.PdfReader.ASCIIHexDecode C# (CSharp) Метод

        public static byte[] ASCIIHexDecode(byte[] inp) {
            MemoryStream outp = new MemoryStream();
            bool first = true;
            int n1 = 0;
            for (int k = 0; k < inp.Length; ++k) {
                int ch = inp[k] & 0xff;
                if (ch == '>')
                    break;
                if (PRTokeniser.IsWhitespace(ch))
                    continue;
                int n = PRTokeniser.GetHex(ch);
                if (n == -1)
                    throw new ArgumentException("Illegal character in ASCIIHexDecode.");
                if (first)
                    n1 = n;
                else
                    outp.WriteByte((byte)((n1 << 4) + n));
                first = !first;
            }
            if (!first)
                outp.WriteByte((byte)(n1 << 4));
            return outp.ToArray();
        }
        

            public byte[] Decode(byte[] b, PdfName filterName, PdfObject decodeParams, PdfDictionary streamDictionary)
            {
                MemoryStream outS = EnableMemoryLimitsAwareHandler(streamDictionary);

                b = PdfReader.ASCIIHexDecode(b, outS);
                return(b);
            }