public static int CryptoStreamXor(byte[] C, byte[] M, long Mlen, byte[] N, byte[] K)
{
byte[] subkey = new byte[32];
Hsalsa20.CryptoCore(subkey, N, K, Xsalsa20.sigma);
return(Salsa20.CryptoStreamXor(C, M, (int)Mlen, N, 16, subkey));
}
public void EncryptDecrypt()
{
// generate data to encrypt
byte[] input;
using (MemoryStream stream = new MemoryStream())
using (BinaryWriter writer = new BinaryWriter(stream))
{
for (short value = -1024; value <= 1023; value++)
{
writer.Write(value);
}
writer.Flush();
input = stream.ToArray();
}
using (SymmetricAlgorithm salsa20 = new Salsa20())
{
byte[] encrypted = new byte[input.Length];
using (ICryptoTransform encrypt = salsa20.CreateEncryptor())
encrypt.TransformBlock(input, 0, input.Length, encrypted, 0);
byte[] decrypted = new byte[input.Length];
using (ICryptoTransform decrypt = salsa20.CreateDecryptor())
decrypt.TransformBlock(encrypted, 0, encrypted.Length, decrypted, 0);
CollectionAssert.AreEqual(input, decrypted);
}
}
public static int CryptoStream(byte[] C, int Clen, byte[] N, byte[] K)
{
byte[] subkey = new byte[32];
Hsalsa20.CryptoCore(subkey, N, K, Xsalsa20.sigma);
return(Salsa20.CryptoStream(C, Clen, N, 16, subkey));
}
/// <summary>
/// Get a SharedSecret Key for this pair (my Private Key - your Public Key)
/// </summary>
/// <param name="peerPublicKey"></param>
/// <param name="privateKey"></param>
/// <returns></returns>
/// <exception cref="ArgumentNullException"></exception>
/// <exception cref="ArgumentException"></exception>
public static byte[] GetSharedSecretKey(byte[] peerPublicKey, byte[] privateKey)
{
if (peerPublicKey == null)
{
throw new ArgumentNullException(nameof(peerPublicKey));
}
if (peerPublicKey.Length != PublicKeySizeInBytes)
{
throw new ArgumentException($"{nameof(peerPublicKey)} must be {PublicKeySizeInBytes}");
}
if (privateKey == null)
{
throw new ArgumentNullException(nameof(privateKey));
}
if (privateKey.Length != PrivateKeySizeInBytes)
{
throw new ArgumentException($"{nameof(privateKey)} must be {PrivateKeySizeInBytes}");
}
//Resolve SharedSecret Key using the Montgomery Elliptical Curve Operations...
var sharedSecretKey = MontgomeryOperations.ScalarMultiplication(
n: privateKey,
p: peerPublicKey,
qSize: SharedKeySizeInBytes);
//hashes like the NaCl paper says instead i.e. HSalsa(x,0)
sharedSecretKey = Salsa20.HSalsa20(key: sharedSecretKey);
return(sharedSecretKey);
}
static void Main(string[] args)
{
Console.WriteLine("Hashing devices found ::");
foreach (var AcceleratorDevice in AcceleratorDevice.All)
{
Console.WriteLine($" {AcceleratorDevice}");
}
Console.WriteLine("");
if (args == null || args.Length == 0)
{
throw new ArgumentException("No arguments supplied");
}
IHash hash;
switch (args[0].ToLowerInvariant())
{
case "salsa":
hash = new Salsa20();
break;
case "jenkins":
hash = new Jenkins96();
break;
case "benchmark":
BenchmarkJenkins(args);
return;
case "wordlist":
hash = new Wordlist();
break;
case "variation":
hash = new VarientGen();
break;
case "mix":
hash = new MixMatch();
break;
case "markov":
hash = new MarkovChain();
break;
default:
throw new ArgumentException("Invalid hash type");
}
// override console exit event
CleanExitHandler.Attach();
hash.LoadParameters(args);
hash.Start();
Console.ReadLine();
}
private static void TestColumnRound(uint[] input, uint[] output)
{
uint[] result = Salsa20.ColumnRound(input);
for (int i = 0; i < 16; i++)
{
Assert.AreEqual(output[i], result[i]);
}
}
private static void TestQuarterRound(uint[] input, uint[] output)
{
uint[] result = Salsa20.QuarterRound(input);
for (int i = 0; i < 4; i++)
{
Assert.AreEqual(output[i], result[i]);
}
}
public static int CryptoStreamXor(byte[] C, byte[] M, int Mlen, byte[] N, int Noffset, byte[] K)
{
byte[] inv = new byte[16];
byte[] block = new byte[64];
int coffset = 0;
int moffset = 0;
if (Mlen == 0)
{
return(0);
}
for (int i = 0; i < 8; ++i)
{
inv[i] = N[Noffset + i];
}
for (int i = 8; i < 16; ++i)
{
inv[i] = 0;
}
while (Mlen >= 64)
{
Salsa20.CryptoCore(block, inv, K, Xsalsa20.sigma);
for (int i = 0; i < 64; ++i)
{
C[coffset + i] = (byte)(M[moffset + i] ^ block[i]);
}
int u = 1;
for (int i = 8; i < 16; ++i)
{
u += inv[i] & 0xff;
inv[i] = (byte)u;
u = (int)((uint)u >> 8);
}
Mlen -= 64;
coffset += 64;
moffset += 64;
}
if (Mlen != 0)
{
Salsa20.CryptoCore(block, inv, K, Xsalsa20.sigma);
for (int i = 0; i < Mlen; ++i)
{
C[coffset + i] = (byte)(M[moffset + i] ^ block[i]);
}
}
return(0);
}
private void ParallelTest()
{
CSPPrng rng = new CSPPrng();
byte[] key = rng.GetBytes(32);
byte[] iv = rng.GetBytes(8);
byte[] data = rng.GetBytes(2048);
byte[] enc = new byte[2048];
byte[] dec = new byte[2048];
byte[] enc2 = new byte[2048];
byte[] dec2 = new byte[2048];
rng.Dispose();
using (Salsa20 salsa = new Salsa20(10))
{
// encrypt linear
salsa.Initialize(new KeyParams(key, iv));
salsa.IsParallel = false;
salsa.Transform(data, enc);
// encrypt parallel
salsa.Initialize(new KeyParams(key, iv));
salsa.IsParallel = true;
salsa.ParallelBlockSize = 2048;
salsa.Transform(data, enc2);
if (!Evaluate.AreEqual(enc, enc2))
{
throw new Exception("Salsa20: Encrypted arrays are not equal!");
}
// decrypt linear
salsa.Initialize(new KeyParams(key, iv));
salsa.IsParallel = false;
salsa.Transform(enc, dec);
// decrypt parallel
salsa.Initialize(new KeyParams(key, iv));
salsa.IsParallel = true;
salsa.ParallelBlockSize = 2048;
salsa.Transform(enc2, dec2);
if (!Evaluate.AreEqual(dec, dec2))
{
throw new Exception("Salsa20: Decrypted arrays are not equal!");
}
if (!Evaluate.AreEqual(dec, data))
{
throw new Exception("Salsa20: Decrypted arrays are not equal!");
}
if (!Evaluate.AreEqual(dec2, data))
{
throw new Exception("Salsa20: Decrypted arrays are not equal!");
}
}
}
public void CreateDecryptorInvalid()
{
using (SymmetricAlgorithm salsa20 = new Salsa20())
{
Assert.Throws <ArgumentNullException>(() => salsa20.CreateDecryptor(null, new byte[8]));
Assert.Throws <ArgumentNullException>(() => salsa20.CreateDecryptor(new byte[16], null));
Assert.Throws <CryptographicException>(() => salsa20.CreateDecryptor(new byte[15], new byte[8]));
Assert.Throws <CryptographicException>(() => salsa20.CreateDecryptor(new byte[16], new byte[7]));
}
}
public void CreateEncryptorInvalid()
{
using (SymmetricAlgorithm salsa20 = new Salsa20())
{
Assert.Throws<ArgumentNullException>(() => salsa20.CreateEncryptor(null, new byte[8]));
Assert.Throws<ArgumentNullException>(() => salsa20.CreateEncryptor(new byte[16], null));
Assert.Throws<CryptographicException>(() => salsa20.CreateEncryptor(new byte[15], new byte[8]));
Assert.Throws<CryptographicException>(() => salsa20.CreateEncryptor(new byte[16], new byte[7]));
}
}
public static byte[] DecryptSalsa20(byte[] input, string key)
{
byte[] initKey = SHA256.Create().ComputeHash(Encoding.UTF8.GetBytes(key));
byte[] initVec = SHA256.Create().ComputeHash(Encoding.UTF8.GetBytes(key).Reverse().ToArray());
initKey = initKey.Crop(32);
initVec = initVec.Crop(8);
var enc = new Salsa20().CreateDecryptor(initKey, initVec);
byte[] output = enc.TransformFinalBlock(input, 0, input.Length);
return(output);
}
public void IV()
{
using (SymmetricAlgorithm salsa20 = new Salsa20())
{
Assert.Throws <ArgumentNullException>(() => salsa20.IV = null);
Assert.Throws <CryptographicException>(() => salsa20.IV = new byte[9]);
byte[] iv = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };
salsa20.IV = iv;
CollectionAssert.AreEqual(iv, salsa20.IV);
}
}
public void CryptoTransform()
{
using (SymmetricAlgorithm salsa20 = new Salsa20())
using (ICryptoTransform transform = salsa20.CreateEncryptor(new byte[16], new byte[8]))
{
Assert.AreEqual(salsa20.BlockSize / 8, transform.InputBlockSize);
Assert.AreEqual(salsa20.BlockSize / 8, transform.OutputBlockSize);
Assert.IsFalse(transform.CanReuseTransform);
Assert.IsTrue(transform.CanTransformMultipleBlocks);
}
}
public void GenerateRandom()
{
byte[] rng = new byte[Program.RNG_COUNT * Program.INT_SIZE];
using (SymmetricAlgorithm salsa20 = new Salsa20())
using (ICryptoTransform encrypt = salsa20.CreateEncryptor(Guid.NewGuid().ToByteArray(),
Guid.NewGuid().ToByteArray().Take(8).ToArray()))
using (MemoryStream streamInput = new MemoryStream(rng, false))
using (CryptoStream streamEncrypted = new CryptoStream(streamInput, encrypt, CryptoStreamMode.Read))
{
streamEncrypted.ReadAsync(rng).GetAwaiter().GetResult();
}
}
private byte[] DoSalsa20(byte[] iv, byte[] key, byte[] data)
{
Salsa20 s = new Salsa20();
ICryptoTransform enc = s.CreateEncryptor(key, iv);
byte[] result = new byte[32];
enc.TransformBlock(data, 0, data.Length, result, 0);
return(result);
}
public void CryptoTransform()
{
using (SymmetricAlgorithm salsa20 = new Salsa20())
using (ICryptoTransform transform = salsa20.CreateEncryptor(new byte[16], new byte[8]))
{
Assert.AreEqual(salsa20.BlockSize / 8, transform.InputBlockSize);
Assert.AreEqual(salsa20.BlockSize / 8, transform.OutputBlockSize);
Assert.IsFalse(transform.CanReuseTransform);
Assert.IsTrue(transform.CanTransformMultipleBlocks);
}
}
public static void Crypt(CryptVerbs options)
{
if (!File.Exists(options.InputPath))
{
Console.WriteLine("[X] File to encrypt does not exist.");
return;
}
byte[] input = File.ReadAllBytes(options.InputPath);
if (!string.IsNullOrEmpty(options.Salsa20KeyEncrypt))
{
byte[] keyBytes = MiscUtils.StringToByteArray(options.Salsa20KeyEncrypt);
using SymmetricAlgorithm salsa20 = new Salsa20();
byte[] dataKey = new byte[8];
Console.WriteLine("[:] Encrypting..");
using var decrypt = salsa20.CreateDecryptor(keyBytes, dataKey);
decrypt.TransformBlock(input, 0, input.Length, input, 0);
}
else if (!string.IsNullOrEmpty(options.Salsa20KeyDecrypt))
{
byte[] keyBytes = MiscUtils.StringToByteArray(options.Salsa20KeyDecrypt);
using SymmetricAlgorithm salsa20 = new Salsa20();
byte[] dataKey = new byte[8];
Console.WriteLine("[:] Decrypting..");
using var encrypt = salsa20.CreateEncryptor(keyBytes, dataKey);
encrypt.TransformBlock(input, 0, input.Length, input, 0);
}
else
{
Keyset[] keysets = CheckKeys();
if (keysets is null)
{
return;
}
Keyset keys = keysets.Where(e => e.GameCode.Equals(options.GameCode, StringComparison.OrdinalIgnoreCase)).FirstOrDefault();
if (keys is null)
{
Console.WriteLine($"Keyset with GameCode '{options.GameCode}' does not exist in the keyset file.");
return;
}
Console.WriteLine("[!] Crypting..");
keys.CryptData(input, 0);
}
Console.WriteLine($"[:] Saving file as {options.OutputPath}..");
File.WriteAllBytes(options.OutputPath, input);
Console.WriteLine("[/] Done.");
}
static byte[] Decrypt(byte[] encrypted, string key)
{
using (SymmetricAlgorithm salsa20 = new Salsa20())
{
var dataKey = new byte[8];
var keyBytes = Encoding.UTF8.GetBytes(key);
byte[] decrypted = new byte[encrypted.Length];
using (var decrypt = salsa20.CreateDecryptor(keyBytes, dataKey))
decrypt.TransformBlock(encrypted, 0, encrypted.Length, decrypted, 0);
return(decrypted);
}
}
static byte[] Encrypt(byte[] input, string key)
{
using (SymmetricAlgorithm salsa20 = new Salsa20())
{
var dataKey = new byte[8];
var keyBytes = Encoding.UTF8.GetBytes(key);
byte[] encrypted = new byte[input.Length];
using (var encrypt = salsa20.CreateEncryptor(keyBytes, dataKey))
encrypt.TransformBlock(input, 0, input.Length, encrypted, 0);
return(encrypted);
}
}
public void Rounds()
{
using (Salsa20 salsa20 = new Salsa20())
{
Assert.AreEqual(20, salsa20.Rounds);
salsa20.Rounds = 12;
Assert.AreEqual(12, salsa20.Rounds);
salsa20.Rounds = 8;
Assert.AreEqual(8, salsa20.Rounds);
Assert.Throws <ArgumentOutOfRangeException>(() => salsa20.Rounds = 16);
}
}
public void Dispose()
{
using (SymmetricAlgorithm salsa20 = new Salsa20())
using (ICryptoTransform transform = salsa20.CreateEncryptor(new byte[16], new byte[8]))
{
transform.Dispose();
transform.Dispose();
Assert.Throws<ObjectDisposedException>(() => transform.TransformBlock(new byte[1], 0, 1, new byte[1], 0));
Assert.Throws<ObjectDisposedException>(() => transform.TransformFinalBlock(new byte[1], 0, 1));
((IDisposable)salsa20).Dispose();
((IDisposable)salsa20).Dispose();
}
}
public void Salsa20Test()
{
var inputStr = @"
7e879a21 4f3ec986 7ca940e6 41718f26 baee555b 8c61c1b5 0df84611 6dcd3b1d
ee24f319 df9b3d85 14121e4b 5ac5aa32 76021d29 09c74829 edebc68d b8b8c25e" .Clean();
var outputStr = @"
a41f859c 6608cc99 3b81cacb 020cef05 044b2181 a2fd337d fd7b1c63 96682f29
b4393168 e3c9e6bc fe6bc5b7 a06d96ba e424cc10 2c91745c 24ad673d c7618f81" .Clean();
var input = Encoders.Hex.GetBytes(inputStr);
Salsa20.Compute(input);
CollectionAssert.AreEqual(input, Encoders.Hex.GetBytes(outputStr));
}
public void Dispose()
{
using (SymmetricAlgorithm salsa20 = new Salsa20())
using (ICryptoTransform transform = salsa20.CreateEncryptor(new byte[16], new byte[8]))
{
transform.Dispose();
transform.Dispose();
Assert.Throws <ObjectDisposedException>(() => transform.TransformBlock(new byte[1], 0, 1, new byte[1], 0));
Assert.Throws <ObjectDisposedException>(() => transform.TransformFinalBlock(new byte[1], 0, 1));
((IDisposable)salsa20).Dispose();
((IDisposable)salsa20).Dispose();
}
}
public void BlockSize()
{
using (SymmetricAlgorithm salsa20 = new Salsa20())
{
Assert.AreEqual(512, salsa20.BlockSize);
KeySizes[] sizes = salsa20.LegalBlockSizes;
Assert.AreEqual(1, sizes.Length);
Assert.AreEqual(512, sizes[0].MinSize);
Assert.AreEqual(512, sizes[0].MaxSize);
Assert.AreEqual(0, sizes[0].SkipSize);
Assert.Throws <CryptographicException>(() => salsa20.BlockSize = 128);
}
}
public void BlockSize()
{
using (SymmetricAlgorithm salsa20 = new Salsa20())
{
Assert.AreEqual(512, salsa20.BlockSize);
KeySizes[] sizes = salsa20.LegalBlockSizes;
Assert.AreEqual(1, sizes.Length);
Assert.AreEqual(512, sizes[0].MinSize);
Assert.AreEqual(512, sizes[0].MaxSize);
Assert.AreEqual(0, sizes[0].SkipSize);
Assert.Throws<CryptographicException>(() => salsa20.BlockSize = 128);
}
}
public void TransformFinalBlock()
{
using (SymmetricAlgorithm salsa20 = new Salsa20())
using (ICryptoTransform transform = salsa20.CreateEncryptor(new byte[16], new byte[8]))
{
byte[] aby0 = new byte[0];
byte[] aby1 = new byte[1];
Assert.Throws <ArgumentNullException>(() => transform.TransformFinalBlock(null, 0, 0));
Assert.Throws <ArgumentOutOfRangeException>(() => transform.TransformFinalBlock(aby0, -1, 0));
Assert.Throws <ArgumentOutOfRangeException>(() => transform.TransformFinalBlock(aby0, 1, 0));
Assert.Throws <ArgumentOutOfRangeException>(() => transform.TransformFinalBlock(aby1, 0, -1));
Assert.Throws <ArgumentOutOfRangeException>(() => transform.TransformFinalBlock(aby1, 0, 2));
Assert.Throws <ArgumentOutOfRangeException>(() => transform.TransformFinalBlock(aby1, 1, 1));
}
}
private byte[] SalsaA(byte[] Key, byte[] Vector, byte[] Data)
{
int len = Data.Length;
int ct = 0;
byte[] output = new byte[len];
using (Salsa20 salsa = new Salsa20())
{
salsa.Init(Key, Vector);
while (ct < len)
{
salsa.Transform(Data, ct, 64, output, ct);
ct += 64;
}
}
return output;
}
public static byte[] DecryptFile(string name, byte[] data, string decryptionKeyName)
{
byte[] key = new byte[16];
using (BinaryReader reader = new BinaryReader(new FileStream(decryptionKeyName + ".ak", FileMode.Open)))
{
key = reader.ReadBytes(16);
}
byte[] IV = name.ToByteArray();
Array.Copy(IV, 8, IV, 0, 8);
Array.Resize(ref IV, 8);
using (var salsa = new Salsa20())
{
var decryptor = salsa.CreateDecryptor(key, IV);
return(decryptor.TransformFinalBlock(data, 0, data.Length));
}
}
private byte[] SalsaA(byte[] Key, byte[] Vector, byte[] Data)
{
int len = Data.Length;
int ct = 0;
byte[] output = new byte[len];
using (Salsa20 salsa = new Salsa20())
{
salsa.Init(Key, Vector);
while (ct < len)
{
salsa.Transform(Data, ct, 64, output, ct);
ct += 64;
}
}
return(output);
}
public void EcryptTestVector131072(string strComment, int rounds, string key, string iv, string strOutput0_63, string strOutput65472_65535, string strOutput65536_65599, string strOutput131008_131071)
{
byte[] output;
// use the Salsa20 transform directly
using (SymmetricAlgorithm salsa20 = new Salsa20()
{
Rounds = rounds
})
using (ICryptoTransform encrypt = salsa20.CreateEncryptor(ToBytes(key), ToBytes(iv)))
{
// input is all zeroes
byte[] input = new byte[131072];
output = encrypt.TransformFinalBlock(input, 0, input.Length);
}
CollectionAssert.AreEqual(ToBytes(strOutput0_63), output.Skip(0).Take(64).ToList());
CollectionAssert.AreEqual(ToBytes(strOutput65472_65535), output.Skip(65472).Take(64).ToList());
CollectionAssert.AreEqual(ToBytes(strOutput65536_65599), output.Skip(65536).Take(64).ToList());
CollectionAssert.AreEqual(ToBytes(strOutput131008_131071), output.Skip(131008).Take(64).ToList());
}
static void Main(string[] args)
{
Console.WriteLine("Hashing devices found ::");
foreach (var AcceleratorDevice in AcceleratorDevice.All)
{
Console.WriteLine($" {AcceleratorDevice}");
}
Console.WriteLine("");
if (args == null || args.Length == 0)
{
throw new ArgumentException("No arguments supplied");
}
IHash hash;
switch (args[0].ToLowerInvariant())
{
case "salsa":
hash = new Salsa20();
break;
case "jenkins":
hash = new Jenkins96();
break;
case "benchmark":
BenchmarkJenkins(args);
return;
default:
throw new ArgumentException("Invalid hash type");
}
hash.LoadParameters(args);
hash.Start();
}
public void EcryptTestVector512(string strComment, int rounds, string key, string iv, string strOutput0_63, string strOutput192_255, string strOutput256_319, string strOutput448_511)
{
const int c_nSize = 512;
byte[] output = new byte[c_nSize];
// encrypt by using CryptoStream
using (SymmetricAlgorithm salsa20 = new Salsa20()
{
Rounds = rounds
})
using (ICryptoTransform encrypt = salsa20.CreateEncryptor(ToBytes(key), ToBytes(iv)))
using (MemoryStream streamInput = new MemoryStream(new byte[c_nSize], false))
using (CryptoStream streamEncrypted = new CryptoStream(streamInput, encrypt, CryptoStreamMode.Read))
{
streamEncrypted.Read(output, 0, output.Length);
}
CollectionAssert.AreEqual(ToBytes(strOutput0_63), output.Skip(0).Take(64).ToList());
CollectionAssert.AreEqual(ToBytes(strOutput192_255), output.Skip(192).Take(64).ToList());
CollectionAssert.AreEqual(ToBytes(strOutput256_319), output.Skip(256).Take(64).ToList());
CollectionAssert.AreEqual(ToBytes(strOutput448_511), output.Skip(448).Take(64).ToList());
}
private void VectorTest(int Rounds, byte[] Key, byte[] Vector, byte[] Input, byte[] Output)
{
byte[] outBytes = new byte[Input.Length];
using (Salsa20 salsa = new Salsa20(Rounds))
{
salsa.Initialize(new KeyParams(Key, Vector));
salsa.Transform(Input, 0, outBytes, 0, Input.Length);
if (Evaluate.AreEqual(outBytes, Output) == false)
{
throw new Exception("Salsa20: Encrypted arrays are not equal! Expected: " + HexConverter.ToString(Output) + " Received: " + HexConverter.ToString(outBytes));
}
salsa.Initialize(new KeyParams(Key, Vector));
salsa.Transform(Output, 0, outBytes, 0, Output.Length);
if (Evaluate.AreEqual(outBytes, Input) == false)
{
throw new Exception("Salsa20: Decrypted arrays are not equal! Expected: " + HexConverter.ToString(Input) + " Received: " + HexConverter.ToString(outBytes));
}
}
}
public void Key()
{
using (SymmetricAlgorithm salsa20 = new Salsa20())
{
KeySizes[] sizes = salsa20.LegalKeySizes;
Assert.AreEqual(1, sizes.Length);
Assert.AreEqual(128, sizes[0].MinSize);
Assert.AreEqual(256, sizes[0].MaxSize);
Assert.AreEqual(128, sizes[0].SkipSize);
Assert.Throws <ArgumentNullException>(() => salsa20.Key = null);
Assert.Throws <CryptographicException>(() => salsa20.Key = new byte[8]);
byte[] key16 = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f };
salsa20.Key = key16;
CollectionAssert.AreEqual(key16, salsa20.Key);
byte[] key32 = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f };
salsa20.Key = key32;
CollectionAssert.AreEqual(key32, salsa20.Key);
}
}
public void EncryptDecrypt()
{
// generate data to encrypt
byte[] input;
using (MemoryStream stream = new MemoryStream())
using (BinaryWriter writer = new BinaryWriter(stream))
{
for (short value = -1024; value <= 1023; value++)
writer.Write(value);
writer.Flush();
input = stream.ToArray();
}
using (SymmetricAlgorithm salsa20 = new Salsa20())
{
byte[] encrypted = new byte[input.Length];
using (ICryptoTransform encrypt = salsa20.CreateEncryptor())
encrypt.TransformBlock(input, 0, input.Length, encrypted, 0);
byte[] decrypted = new byte[input.Length];
using (ICryptoTransform decrypt = salsa20.CreateDecryptor())
decrypt.TransformBlock(encrypted, 0, encrypted.Length, decrypted, 0);
CollectionAssert.AreEqual(input, decrypted);
}
}
public void EcryptTestVector131072(string strComment, int rounds, string key, string iv, string strOutput0_63, string strOutput65472_65535, string strOutput65536_65599, string strOutput131008_131071)
{
byte[] output;
// use the Salsa20 transform directly
using (SymmetricAlgorithm salsa20 = new Salsa20() { Rounds = rounds })
using (ICryptoTransform encrypt = salsa20.CreateEncryptor(ToBytes(key), ToBytes(iv)))
{
// input is all zeroes
byte[] input = new byte[131072];
output = encrypt.TransformFinalBlock(input, 0, input.Length);
}
CollectionAssert.AreEqual(ToBytes(strOutput0_63), output.Skip(0).Take(64).ToList());
CollectionAssert.AreEqual(ToBytes(strOutput65472_65535), output.Skip(65472).Take(64).ToList());
CollectionAssert.AreEqual(ToBytes(strOutput65536_65599), output.Skip(65536).Take(64).ToList());
CollectionAssert.AreEqual(ToBytes(strOutput131008_131071), output.Skip(131008).Take(64).ToList());
}
public void EcryptTestVector512(string strComment, int rounds, string key, string iv, string strOutput0_63, string strOutput192_255, string strOutput256_319, string strOutput448_511)
{
const int c_nSize = 512;
byte[] output = new byte[c_nSize];
// encrypt by using CryptoStream
using (SymmetricAlgorithm salsa20 = new Salsa20() { Rounds = rounds })
using (ICryptoTransform encrypt = salsa20.CreateEncryptor(ToBytes(key), ToBytes(iv)))
using (MemoryStream streamInput = new MemoryStream(new byte[c_nSize], false))
using (CryptoStream streamEncrypted = new CryptoStream(streamInput, encrypt, CryptoStreamMode.Read))
{
streamEncrypted.Read(output, 0, output.Length);
}
CollectionAssert.AreEqual(ToBytes(strOutput0_63), output.Skip(0).Take(64).ToList());
CollectionAssert.AreEqual(ToBytes(strOutput192_255), output.Skip(192).Take(64).ToList());
CollectionAssert.AreEqual(ToBytes(strOutput256_319), output.Skip(256).Take(64).ToList());
CollectionAssert.AreEqual(ToBytes(strOutput448_511), output.Skip(448).Take(64).ToList());
}
public void IV()
{
using (SymmetricAlgorithm salsa20 = new Salsa20())
{
Assert.Throws<ArgumentNullException>(() => salsa20.IV = null);
Assert.Throws<CryptographicException>(() => salsa20.IV = new byte[9]);
byte[] iv = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };
salsa20.IV = iv;
CollectionAssert.AreEqual(iv, salsa20.IV);
}
}
public void Key()
{
using (SymmetricAlgorithm salsa20 = new Salsa20())
{
KeySizes[] sizes = salsa20.LegalKeySizes;
Assert.AreEqual(1, sizes.Length);
Assert.AreEqual(128, sizes[0].MinSize);
Assert.AreEqual(256, sizes[0].MaxSize);
Assert.AreEqual(128, sizes[0].SkipSize);
Assert.Throws<ArgumentNullException>(() => salsa20.Key = null);
Assert.Throws<CryptographicException>(() => salsa20.Key = new byte[8]);
byte[] key16 = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f };
salsa20.Key = key16;
CollectionAssert.AreEqual(key16, salsa20.Key);
byte[] key32 = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f };
salsa20.Key = key32;
CollectionAssert.AreEqual(key32, salsa20.Key);
}
}
public void Rounds()
{
using (global::Salsa20.Core.Salsa20 salsa20 = new Salsa20())
{
Assert.AreEqual(20, salsa20.Rounds);
salsa20.Rounds = 12;
Assert.AreEqual(12, salsa20.Rounds);
salsa20.Rounds = 8;
Assert.AreEqual(8, salsa20.Rounds);
Assert.Throws<ArgumentOutOfRangeException>(() => salsa20.Rounds = 16);
}
}
public void TransformFinalBlock()
{
using (SymmetricAlgorithm salsa20 = new Salsa20())
using (ICryptoTransform transform = salsa20.CreateEncryptor(new byte[16], new byte[8]))
{
byte[] aby0 = new byte[0];
byte[] aby1 = new byte[1];
Assert.Throws<ArgumentNullException>(() => transform.TransformFinalBlock(null, 0, 0));
Assert.Throws<ArgumentOutOfRangeException>(() => transform.TransformFinalBlock(aby0, -1, 0));
Assert.Throws<ArgumentOutOfRangeException>(() => transform.TransformFinalBlock(aby0, 1, 0));
Assert.Throws<ArgumentOutOfRangeException>(() => transform.TransformFinalBlock(aby1, 0, -1));
Assert.Throws<ArgumentOutOfRangeException>(() => transform.TransformFinalBlock(aby1, 0, 2));
Assert.Throws<ArgumentOutOfRangeException>(() => transform.TransformFinalBlock(aby1, 1, 1));
}
}
