public static SymmetricAlgorithm GetSymmetricAlgorithm(string algorithm)
{
var symmetric = null as SymmetricAlgorithm;
if (AesEncryption.Contains(algorithm))
{
symmetric = Aes.Create();
}
if (symmetric == null)
{
throw new NotSupportedException($"Encryption algorithm '{algorithm}' not supported.");
}
symmetric.Mode = GetCipherMode(algorithm);
symmetric.Padding = PaddingMode.ISO10126;
symmetric.KeySize = GetKeySize(algorithm);
symmetric.GenerateKey();
symmetric.GenerateIV();
return(symmetric);
}