private static void TestAesGCM()
{
const string original = "Text to encrypt";
var aesGCM = new AesGCMEncryption();
var gcmKey = aesGCM.GenerateRandomNumber(32);
var nonce = aesGCM.GenerateRandomNumber(12);
try
{
(byte[] ciphereText, byte[] tag)result = aesGCM.Encrypt(Encoding.UTF8.GetBytes(original), gcmKey, nonce, Encoding.UTF8.GetBytes("some metadata"));
byte[] decryptedText = aesGCM.Decrypt(result.ciphereText, gcmKey, nonce, result.tag, Encoding.UTF8.GetBytes("some metadata"));
Console.WriteLine("AES GCM Encryption Demonstration in .NET");
Console.WriteLine("----------------------------------------");
Console.WriteLine();
Console.WriteLine("Original Text = " + original);
Console.WriteLine("Encrypted Text = " + Convert.ToBase64String(result.ciphereText));
Console.WriteLine("Decrypted Text = " + Encoding.UTF8.GetString(decryptedText));
}
catch (CryptographicException ex)
{
Console.WriteLine(ex.Message);
}
catch (ArgumentException ex)
{
Console.WriteLine(ex.Message);
}
}