public CipherResultText(EncryptionOptions eO, byte[] cipherText)
{
if (eO != null)
{
DerivationType = eO.DerivationType;
Salt = ScryptHandler.ByteArrayToString(eO.Salt);
Cost = eO.Cost;
BlockSize = eO.BlockSize;
Parallel = eO.Parallel;
KeySizeInBytes = eO.KeySizeInBytes;
DerivationIterations = eO.DerivationIterations;
CipherOutputText = Convert.ToBase64String(cipherText);
AesRijndaelIv = Convert.ToBase64String(eO.RijndaelIv);
}
}
public CipherResultText ConvertToCipherTextObject()
{
var cipherTextObject = new CipherResultText()
{
AesRijndaelIv = Convert.ToBase64String(AesRijndaelIv),
BlockSize = BlockSize,
CipherOutputText = (CipherOutput == null) ? null : Convert.ToBase64String(CipherOutput),
Cost = Cost,
DerivationIterations = DerivationIterations,
DerivationType = DerivationType,
KeySizeInBytes = KeySizeInBytes,
Parallel = Parallel,
Salt = ScryptHandler.ByteArrayToString(Salt)
};
return(cipherTextObject);
}
static void Main(string[] args)
{
//Encrypt plain text in C# with a random password
string plainText = "This is my secret text!";
//You can also use the built in password generator!!
string passPhrase = PasswordGenerator.GenerateRandomPassword(20);
passPhrase = "This_is_my_password!";
// Uses by default "Scrypt" as the Password Derivation method. If you want to change this, you have to set
// EncryptionOptions (create an object of the class)
var enc = EncryptionHandler.Encrypt(plainText, passPhrase);
Console.WriteLine("Encryption / Decryption with key derivation via SCRYPT");
Console.WriteLine("Plaintext: 'This is my secret text' with password 'This_is_my_password!' results in ciphertext: " + enc);
var dec3 = EncryptionHandler.Decrypt(enc, passPhrase);
Console.WriteLine("And decrypting again: " + dec3);
Console.WriteLine("Encryption / Decryption with key derivation via PBKDF2");
var eO = new EncryptionOptions("pbkdf2");
var enc4 = EncryptionHandler.Encrypt(plainText, passPhrase, eO);
Console.WriteLine("Plaintext: 'This is my secret text' with password 'This_is_my_password!' results in ciphertext: " + enc4);
var dec4 = EncryptionHandler.Decrypt(enc4, passPhrase);
Console.WriteLine("And decrypting again: " + dec4);
Console.WriteLine("Please start the index.html to see the same in Javascript. Encryption / Decryption run in both ways and can be interchanged between C# and JS!");
/*
* Testing binary encryption
*
*/
var file = File.ReadAllBytes(@"cartman.png");
var iv = Encoding.ASCII.GetBytes("iv_is_16_long___"); // Usually, don't produce your own IVs!
var salt = Encoding.UTF8.GetBytes("This_is_my_salt"); // Usually, don't produce your own Salt!
var enc2 = EncryptionHandler.BinaryEncryptWithStaticIv(file, "This_is_my_password!", new EncryptionOptions("scrypt", salt, iv));
File.WriteAllBytes("cartman.enc", enc2.CipherOutput);
enc2.CipherOutput = null;
var enc3 = enc2.ConvertToCipherTextObject();
var json = JsonConvert.SerializeObject(enc3, Formatting.None);
File.WriteAllText("cartman-settings.txt", json);
/*
* Testing Scrypt
* The recommended parameters for interactive logins as of 2009 are
* iterationCount=16384, blockSize=8, threadCount=1, those are the default values.
* They should be increased as memory latency and CPU parallelism increases.
*/
Stopwatch stopWatch = new Stopwatch();
stopWatch.Start();
// NOW RUNNING SCRYPT
string hashString = ScryptHandler.Hash(passPhrase, "This_is_my_SALT!", 16384);
stopWatch.Stop();
Console.WriteLine("\r\nTesting Scrypt with the password 'This_is_my_password!': " + hashString);
bool compare = ScryptHandler.ComparePasswordWithHash("This_is_my_password!", hashString);
if (compare)
{
Console.WriteLine("The password matches with the stored hash!");
}
else
{
Console.WriteLine("The password does not match with the stored hash!");
}
// Get the elapsed time as a TimeSpan value.
TimeSpan ts = stopWatch.Elapsed;
// Format and display the TimeSpan value.
string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}",
ts.Hours, ts.Minutes, ts.Seconds,
ts.Milliseconds / 10);
Console.WriteLine("Time elapsed in HH:MM:SS (only for creating the hash, not checking): " + elapsedTime);
}
