public void TryValidate_Should_Return_True_And_Exception_Null_When_Crypto_Matches_Signature()
{
var urlEncoder = new JwtBase64UrlEncoder();
var jsonNetSerializer = new JsonNetSerializer();
var utcDateTimeProvider = new UtcDateTimeProvider();
var jwt = new JwtParts(TestData.Token);
var payloadJson = GetString(urlEncoder.Decode(jwt.Payload));
var crypto = urlEncoder.Decode(jwt.Signature);
var decodedCrypto = Convert.ToBase64String(crypto);
var alg = new HMACSHA256Algorithm();
var bytesToSign = GetBytes(string.Concat(jwt.Header, ".", jwt.Payload));
var signatureData = alg.Sign(GetBytes("ABC"), bytesToSign);
var decodedSignature = Convert.ToBase64String(signatureData);
var jwtValidator = new JwtValidator(jsonNetSerializer, utcDateTimeProvider);
var isValid = jwtValidator.TryValidate(payloadJson, decodedCrypto, decodedSignature, out var ex);
isValid.Should()
.BeTrue("because the token should have been validated");
ex.Should()
.BeNull("because a valid token verified should not raise any exception");
}
public void TryValidate_Should_Return_False_And_Exception_Not_Null_When_Crypto_Matches_Signature()
{
var urlEncoder = new JwtBase64UrlEncoder();
var jsonNetSerializer = new JsonNetSerializer();
var utcDateTimeProvider = new UtcDateTimeProvider();
var jwt = new JwtParts(TestData.Token);
var payloadJson = JwtValidator.GetString(urlEncoder.Decode(jwt.Payload));
var crypto = urlEncoder.Decode(jwt.Signature);
var decodedCrypto = Convert.ToBase64String(crypto);
var alg = new HMACSHA256Algorithm();
var bytesToSign = JwtValidator.GetBytes(String.Concat(jwt.Header, ".", jwt.Payload));
var signatureData = alg.Sign(JwtValidator.GetBytes("ABC"), bytesToSign);
signatureData[0]++; // malformed signature
var decodedSignature = Convert.ToBase64String(signatureData);
var jwtValidator = new JwtValidator(jsonNetSerializer, utcDateTimeProvider);
var isValid = jwtValidator.TryValidate(payloadJson, decodedCrypto, decodedSignature, out var ex);
Assert.False(isValid);
Assert.NotNull(ex);
}
public void TryValidate_Should_Return_True_And_Exception_Null_When_Token_Is_Not_Yet_Usable_But_Validator_Has_Time_Margin()
{
var urlEncoder = new JwtBase64UrlEncoder();
var jsonNetSerializer = new JsonNetSerializer();
var utcDateTimeProvider = new StaticDateTimeProvider(DateTimeOffset.FromUnixTimeSeconds(TestData.TokenTimestamp - 1));
var jwt = new JwtParts(TestData.TokenWithNbf);
var payloadJson = GetString(urlEncoder.Decode(jwt.Payload));
var crypto = urlEncoder.Decode(jwt.Signature);
var decodedCrypto = Convert.ToBase64String(crypto);
var alg = new HMACSHA256Algorithm();
var bytesToSign = GetBytes(String.Concat(jwt.Header, ".", jwt.Payload));
var signatureData = alg.Sign(GetBytes(TestData.Secret), bytesToSign);
var decodedSignature = Convert.ToBase64String(signatureData);
var jwtValidator = new JwtValidator(jsonNetSerializer, utcDateTimeProvider, timeMargin: 1);
var isValid = jwtValidator.TryValidate(payloadJson, decodedCrypto, decodedSignature, out var ex);
isValid.Should()
.BeTrue("because token should be valid");
ex.Should()
.BeNull("because valid token should not throw exception");
}
public void TryValidate_Should_Return_False_And_Exception_Not_Null_When_Token_Is_Expired()
{
var urlEncoder = new JwtBase64UrlEncoder();
var jsonNetSerializer = new JsonNetSerializer();
var utcDateTimeProvider = new StaticDateTimeProvider(DateTimeOffset.FromUnixTimeSeconds(TestData.TokenTimestamp));
var jwt = new JwtParts(TestData.TokenWithExp);
var payloadJson = GetString(urlEncoder.Decode(jwt.Payload));
var crypto = urlEncoder.Decode(jwt.Signature);
var decodedCrypto = Convert.ToBase64String(crypto);
var alg = new HMACSHA256Algorithm();
var bytesToSign = GetBytes(String.Concat(jwt.Header, ".", jwt.Payload));
var signatureData = alg.Sign(GetBytes(TestData.Secret), bytesToSign);
var decodedSignature = Convert.ToBase64String(signatureData);
var jwtValidator = new JwtValidator(jsonNetSerializer, utcDateTimeProvider);
var isValid = jwtValidator.TryValidate(payloadJson, decodedCrypto, decodedSignature, out var ex);
isValid.Should()
.BeFalse("because token should be invalid");
ex.Should()
.NotBeNull("because invalid token should thrown exception");
ex.Should()
.BeOfType(typeof(TokenExpiredException), "because expired token should thrown TokenExpiredException");
}
public void TryValidate_Should_Return_False_And_Exception_Not_Null_When_Signature_Is_Not_Valid()
{
var urlEncoder = new JwtBase64UrlEncoder();
var jsonNetSerializer = new JsonNetSerializer();
var utcDateTimeProvider = new UtcDateTimeProvider();
var jwt = new JwtParts(TestData.Token);
var payloadJson = GetString(urlEncoder.Decode(jwt.Payload));
var crypto = urlEncoder.Decode(jwt.Signature);
var decodedCrypto = Convert.ToBase64String(crypto);
var alg = new HMACSHA256Algorithm();
var bytesToSign = GetBytes(String.Concat(jwt.Header, ".", jwt.Payload));
var signatureData = alg.Sign(GetBytes(TestData.Secret), bytesToSign);
++signatureData[0]; // malformed signature
var decodedSignature = Convert.ToBase64String(signatureData);
var jwtValidator = new JwtValidator(jsonNetSerializer, utcDateTimeProvider);
var isValid = jwtValidator.TryValidate(payloadJson, decodedCrypto, decodedSignature, out var ex);
isValid.Should()
.BeFalse("because token should be invalid");
ex.Should()
.NotBeNull("because invalid token should thrown exception");
}
public void TryValidate_Should_Return_False_And_Exception_Not_Null_When_Argument_Is_Null_Or_Empty(string payloadJson, string decodedCrypto, string decodedSignature)
{
var jwtValidator = new JwtValidator(null, null);
var isValid = jwtValidator.TryValidate(payloadJson, decodedCrypto, decodedSignature, out var ex);
Assert.False(isValid);
Assert.NotNull(ex);
}
public void TryValidate_Should_Return_False_And_Exception_Not_Null_When_Argument_Is_Null_Or_Empty(string payloadJson, string decodedCrypto, string decodedSignature)
{
var jwtValidator = new JwtValidator(null, null);
var isValid = jwtValidator.TryValidate(payloadJson, decodedCrypto, decodedSignature, out var ex);
isValid.Should()
.BeFalse("because the token should not have been validated");
ex.Should()
.NotBeNull("because an exception should have been thrown during the process");
}