private byte[] BcScrypt(char[] password, byte[] salt,
int costParameter, int blocksize, int parallelizationParam)
{
return(SCrypt.Generate(PbeParametersGenerator.Pkcs5PasswordToUtf8Bytes(password),
salt, costParameter, blocksize, parallelizationParam,
256 / 8));
}
public void DeriveKeyTest()
{
int N = 32, r = 2, p = 2;
var derivedkey = SCrypt.Generate(new byte[] { 0x01, 0x02, 0x03 }, new byte[] { 0x04, 0x05, 0x06 }, N, r, p, 64).ToHexString();
Assert.AreEqual("b6274d3a81892c24335ab46a08ec16d040ac00c5943b212099a44b76a9b8102631ab988fa07fb35357cee7b0e3910098c0774c0e97399997676d890b2bf2bb25", derivedkey);
}
public string Hash(string salt, int length)
{
var S = Encoding.UTF8.GetBytes(salt);
var hash = SCrypt.Generate(passBytes, S, N, r, p, length);
var result = Convert.ToBase64String(hash);
return(result);
}
/// <summary>
/// Use Scrypt to generate 48 bytes hash.
/// Scrypt is used instead of Bscrypt because Bscrypt cannot work when importing the wallet
/// </summary>
/// <param name="salt">salt</param>
/// <param name="pwd">password</param>
/// <returns>the generated 48 bytes hash</returns>
public static byte[] GenerateHash(byte[] salt, string pwd)
{
if (salt.Length != 16)
{
return(null);
}
var password = Encoding.UTF8.GetBytes(pwd);
const int SCryptN = 262144;
return(SCrypt.Generate(password, salt, SCryptN, 8, 1, 48));
}
private void CheckIllegal(String msg, byte[] pass, byte[] salt, int N, int r, int p, int len)
{
try
{
SCrypt.Generate(pass, salt, N, r, p, len);
Fail(msg);
}
catch (ArgumentException e)
{
//Console.Error.WriteLine(e.StackTrace);
}
}
public void TestVectors()
{
using (StreamReader sr = new StreamReader(SimpleTest.GetTestDataAsStream("scrypt.TestVectors.txt")))
{
int count = 0;
string line = sr.ReadLine();
while (line != null)
{
++count;
string header = line;
StringBuilder data = new StringBuilder();
while (!IsEndData(line = sr.ReadLine()))
{
data.Append(line.Replace(" ", ""));
}
int start = header.IndexOf('(') + 1;
int limit = header.LastIndexOf(')');
string argStr = header.Substring(start, limit - start);
string[] args = argStr.Split(',');
byte[] P = ExtractQuotedString(args[0]);
byte[] S = ExtractQuotedString(args[1]);
int N = ExtractInteger(args[2]);
int r = ExtractInteger(args[3]);
int p = ExtractInteger(args[4]);
int dkLen = ExtractInteger(args[5]);
byte[] expected = Hex.Decode(data.ToString());
// This skips very expensive test case(s), remove check to re-enable
if (N <= 16384)
{
byte[] result = SCrypt.Generate(P, S, N, r, p, dkLen);
if (!AreEqual(expected, result))
{
Fail("Result does not match expected value in test case " + count);
}
}
}
}
}
public string DoGenerateSCrypt(string password, string salt, int CPUCost, int blockSize, int parallelization,
int keyLenght)
{
this.error.cleanError();
if (!areSCRyptValidParameters(CPUCost, blockSize, parallelization))
{
return("");
}
EncodingUtil eu = new EncodingUtil();
byte[] encryptedBytes = SCrypt.Generate(eu.getBytes(password), Hex.Decode(salt), CPUCost, blockSize, parallelization, keyLenght);
string result = Base64.ToBase64String(encryptedBytes);
if (result == null || result.Length == 0)
{
this.error.setError("PD009", "SCrypt generation error");
return("");
}
this.error.cleanError();
return(result);
}
public static byte[] GenerateDerivedScryptKey(
byte[] password, byte[] salt, int n, int r, int p, int dkLen)
{
return(SCrypt.Generate(password, salt, n, r, p, dkLen));
}