Question

I have a string encrypted in PHP that I would like to decrypt in C#. I used the tutorial below to do the encryption, but am having problems decrypting. Can anyone post an example on how to do this?

http://www.sanity-free.org/131/triple_des_between_php_and_csharp.html

Answer 1

Hope this helps:

class Program {     static void Main(string[] args)     {         Console.WriteLine(Decrypt('47794945c0230c3d'));     }      static string Decrypt(string input)     {         TripleDES tripleDes = TripleDES.Create();         tripleDes.IV = Encoding.ASCII.GetBytes('password');         tripleDes.Key = Encoding.ASCII.GetBytes('passwordDR0wSS@P6660juht');         tripleDes.Mode = CipherMode.CBC;         tripleDes.Padding = PaddingMode.Zeros;          ICryptoTransform crypto = tripleDes.CreateDecryptor();         byte[] decodedInput = Decoder(input);         byte[] decryptedBytes = crypto.TransformFinalBlock(decodedInput, 0, decodedInput.Length);         return Encoding.ASCII.GetString(decryptedBytes);     }      static byte[] Decoder(string input)     {         byte[] bytes = new byte[input.Length/2];         int targetPosition = 0;          for( int sourcePosition=0; sourcePosition<input.Length; sourcePosition+=2 )         {             string hexCode = input.Substring(sourcePosition, 2);             bytes[targetPosition++] = Byte.Parse(hexCode, NumberStyles.AllowHexSpecifier);         }          return bytes;     } }