public byte[] ConvertHexToBinary(string hex_text)
{
try
{
return(InternalMethods.HexStringToBytes(hex_text));
}
catch (Exception exc)
{
LogInternalEvent(exc, 4);
throw exc;
}
}
public string DecryptString(string value, string keyString)
{
try
{
byte[] resultBA = new byte[value.Length / 2], valueBA = new byte[value.Length / 2];
byte[] iv = new byte[] { 0x14, 0xD7, 0x5B, 0xA2, 0x47, 0x83, 0x0F, 0xC4 };
System.Text.ASCIIEncoding ascEncoding = new System.Text.ASCIIEncoding();
byte[] key = new byte[24];
ascEncoding.GetBytes(keyString, 0, keyString.Length < 24?keyString.Length:24, key, 0);
MemoryStream memStream = new MemoryStream();
byte[] tempBA = InternalMethods.HexStringToBytes(value);
memStream.Write(tempBA, 0, tempBA.Length);
memStream.Position = 0;
System.Security.Cryptography.TripleDES
cryptoServiceProvider = System.Security.Cryptography.TripleDESCryptoServiceProvider.Create();
System.Security.Cryptography.ICryptoTransform
decryptor = cryptoServiceProvider.CreateDecryptor(key, iv);
System.Security.Cryptography.CryptoStream
cStream = new System.Security.Cryptography.CryptoStream(
memStream,
decryptor,
System.Security.Cryptography.CryptoStreamMode.Read);
cStream.Read(resultBA, 0, resultBA.Length);
cStream.Close();
return(ascEncoding.GetString(resultBA));
}
catch (Exception exc)
{
LogEvent("Decryption failure. Returning original value" +
Environment.NewLine + exc.Source, "DecryptString()", exc.ToString(), 3);
return(value);
}
}