static void Main(string[] args)
{
var aesHelper = new AesFunctionalityProvider();
var aesAttacker = new PaddingOracleAttacker(aesHelper);
Console.WriteLine($"Your message to be encoded (has to be longer than 16 Bytes - see information at the end):");
var readMessage = Console.ReadLine();
var encryptedMessage = aesHelper.GetAesEncryptedMessage(readMessage);
Console.WriteLine("--------------------------------------------------------------");
Console.WriteLine($"Encrypted message: {Convert.ToBase64String(encryptedMessage)}");
var decryptedMessage = aesAttacker.DecryptCipherBlock(encryptedMessage);
Console.WriteLine("----------------------------------------------------------------");
Console.WriteLine($"Decrypted message: {Encoding.ASCII.GetString(decryptedMessage)}");
Console.WriteLine("==================================================================================");
Console.WriteLine($"First 16-Byte block is not decrypted because of unknown initialization vector IV.");
Console.ReadKey();
}
/// <summary>
/// Initializes helper for AES algorithm class for an internal algorithm purposes.
/// </summary>
/// <param name="aesFunctionalityProvider">Provides basic decryption / encryption operations.</param>
public PaddingOracleAttacker(AesFunctionalityProvider aesFunctionalityProvider)
{
this.AesFuncionalityProvider = aesFunctionalityProvider ?? throw new ArgumentNullException($"Passed argument: {nameof(aesFunctionalityProvider)} cannot be null!");
}