private bool IsKeySizeValid(int size, Algorithm algorithm)
{
SymmetricAlgorithm alg;
switch (algorithm)
{
case Algorithm.DES:
alg = new DESCryptoServiceProvider();
break;
case Algorithm.TripleDES:
alg = new TripleDESCryptoServiceProvider();
break;
case Algorithm.RC2:
alg = new RC2CryptoServiceProvider();
break;
case Algorithm.Rijndael:
alg = Rijndael.Create();
break;
default:
return false;
}
return alg.ValidKeySize(size);
}
public static bool ValidateKeySize( EncryptionAlgorithm algID, int Lenght)
{
switch (algID)
{
case EncryptionAlgorithm.DES:
DES des = new DESCryptoServiceProvider();
return des.ValidKeySize(Lenght);
case EncryptionAlgorithm.Rc2:
RC2 rc = new RC2CryptoServiceProvider();
return rc.ValidKeySize(Lenght);
case EncryptionAlgorithm.Rijndael:
Rijndael rj = new RijndaelManaged();
return rj.ValidKeySize(Lenght);
case EncryptionAlgorithm.TripleDes:
TripleDES tDes = new TripleDESCryptoServiceProvider();
return tDes.ValidKeySize(Lenght);
default:
throw new CryptographicException("Algorithm " + algID + " Not Supported!");
}
}
