private byte[] EncryptDecrypt(byte[] arCryptoBytes, CryptographicDirection theDirection)
{
byte[] arOutputBytes;
//get our cryptographic providers out
MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
TripleDESCryptoServiceProvider my3DES = new TripleDESCryptoServiceProvider();
ICryptoTransform myTransform = null;
try
{
//hash the key
my3DES.Key = hashmd5.ComputeHash(BaseKey);
my3DES.Mode = CipherMode.ECB;
my3DES.Padding = PaddingMode.PKCS7;
switch (theDirection)
{
case CryptographicDirection.Encrypt:
myTransform = my3DES.CreateEncryptor();
break;
case CryptographicDirection.Decrypt:
myTransform = my3DES.CreateDecryptor();
break;
}
arOutputBytes = myTransform.TransformFinalBlock(arCryptoBytes, 0, arCryptoBytes.Length);
}
finally
{
//clear down the objects
//the are managed wrappers to unmanaged objects so best to dispose of them properly
hashmd5.Clear();
my3DES.Clear();
myTransform.Dispose();
}
return(arOutputBytes);
}
private byte[] EncryptDecrypt(byte[] arCryptoBytes, CryptographicDirection theDirection)
{
byte[] arOutputBytes;
//get our cryptographic providers out
MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
TripleDESCryptoServiceProvider my3DES = new TripleDESCryptoServiceProvider();
ICryptoTransform myTransform = null;
try
{
//hash the key
my3DES.Key = hashmd5.ComputeHash(BaseKey);
my3DES.Mode = CipherMode.ECB;
my3DES.Padding = PaddingMode.PKCS7;
switch(theDirection)
{
case CryptographicDirection.Encrypt:
myTransform = my3DES.CreateEncryptor();
break;
case CryptographicDirection.Decrypt:
myTransform = my3DES.CreateDecryptor();
break;
}
arOutputBytes = myTransform.TransformFinalBlock(arCryptoBytes, 0, arCryptoBytes.Length);
}
finally
{
//clear down the objects
//the are managed wrappers to unmanaged objects so best to dispose of them properly
hashmd5.Clear();
my3DES.Clear();
myTransform.Dispose();
}
return arOutputBytes;
}