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!");
}
}