I've been tasked with decrypting 3-DES encrypted strings provided by a
programmer who is using C#. He provided me with a sample of how he performs
decryption in C#, and I've been banging my head against the wall trying to
figure out how to translate this into CF. I've changed the details of the key
he provided.
----
private string Key = "N@5q";
private readonly byte[] IVector = new byte[8] { 27, 9, 45, 27, 0, 72, 171, 54 };
private string Decrypt(string inputString)
{
try
{
byte[] buffer = Convert.FromBase64String(inputString);
TripleDESCryptoServiceProvider tripleDes = new
TripleDESCryptoServiceProvider();
MD5CryptoServiceProvider MD5 = new MD5CryptoServiceProvider();
tripleDes.Key = MD5.ComputeHash(ASCIIEncoding.ASCII.GetBytes(Key));
tripleDes.IV = IVector;
ICryptoTransform ITransform = tripleDes.CreateDecryptor();
return
Encoding.ASCII.GetString(ITransform.TransformFinalBlock(buffer, 0,
buffer.Length));
}
catch (Exception ex)
{ return ""; }
}
----
I've done encryption before, and have been able to successfully send the
encrypted data to third parties for decryption; but I've never been on the
other side of the transfer, and the initialization vector has me especially
confused.
Any help would be much appreciated.
Thanks,
Michael
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