public void GeneratePasswordReturnsPassword()
{
var hashService = Substitute.For<IHashService>();
var hash = new byte[] {0, 0, 0, 0, 0, 0, 0, 0};
var expectedHash = new byte[] { 0, 0, 0, 0 };
hashService.Hash(Arg.Any<byte[]>(), Arg.Any<byte[]>(), Arg.Any<int>(), Arg.Any<int>(), Arg.Any<int>())
.Returns(ci=>hash);
var controller = CreateController(hashService: hashService);
var passwordRequest = new PasswordRequest()
{
HashLength = 64,
Iterations = 1000,
MaximumWordLength = 12,
MinimumWordLength = 6,
PassPhrase = "password",
SaltLength = 16,
SourceType = SourceType.Manual,
WordComplexity = 1000,
WordCount = 0
};
var password = controller.GeneratePassword(passwordRequest);
IStructuralEquatable output = password.Model.Hash;
Assert.True(output.Equals(expectedHash, StructuralComparisons.StructuralEqualityComparer));
}
public JsonResult<Password> GeneratePassword(PasswordRequest passwordRequest)
{
if (passwordRequest.WordCount > 6)
return null;
if (passwordRequest.HashLength > 1024)
return null;
if (passwordRequest.SaltLength > passwordRequest.HashLength * 0.5m)
return null;
if (passwordRequest.Iterations > 10000)
return null;
byte[] passPhraseBytes;
var salt = _hashService.CreateSalt(passwordRequest.SaltLength);
string[] passwordElements;
if (passwordRequest.SourceType == SourceType.Auto)
{
var wordTask = _wordService.RandomWords(passwordRequest.MinimumWordLength, passwordRequest.WordCount,
passwordRequest.MaximumWordLength,
passwordRequest.WordComplexity);
wordTask.Wait();
passwordElements = wordTask.Result.Select(w => w.Word).ToArray();
passPhraseBytes = Encoding.UTF8.GetBytes(string.Join(string.Empty, passwordElements));
}
else
{
passPhraseBytes = Encoding.UTF8.GetBytes(string.Join(string.Empty, passwordRequest.PassPhrase));
passwordElements = new[] {passwordRequest.PassPhrase};
}
var hash = _hashService.Hash(passPhraseBytes, salt, passwordRequest.Iterations, passwordRequest.HashLength + 4);//pad length as we will remove the version number
var password = new Password
{
Hash = hash.Skip(4).ToArray(),//crop the version number from the start
HashSalt = salt,
PasswordElements = passwordElements,
SourceType = passwordRequest.SourceType
};
return new JsonResult<Password>(password);
}
