public static byte[] HexStrToBytes(string hexStr)
{
hexStr = hexStr.Replace(" ", "");
hexStr = hexStr.Replace("\r", "");
hexStr = hexStr.Replace("\n", "");
hexStr = hexStr.ToUpper();
if (hexStr.Length % 2 != 0)
{
throw new Exception("Invalid Hex string: odd length.");
}
for (int index = 0; index < hexStr.Length; ++index)
{
if (!Asn1Util.IsValidHexDigits(hexStr[index]))
{
throw new Exception("Invalid Hex string: included invalid character [" + (object)hexStr[index] + "]");
}
}
int length = hexStr.Length / 2;
byte[] numArray = new byte[length];
for (int index = 0; index < length; ++index)
{
int num = (int)Asn1Util.GetHexDigitsVal(hexStr[index * 2]) << 4 | (int)Asn1Util.GetHexDigitsVal(hexStr[index * 2 + 1]);
numArray[index] = (byte)num;
}
return(numArray);
}
