public void FinishAuthentication_InvalidSignatureData()
{
var mockGenerateChallenge = new Mock <IGenerateFidoChallenge>();
mockGenerateChallenge.Setup(x => x.GenerateChallenge()).Returns(WebSafeBase64Converter.FromBase64String(TestVectors.ServerChallengeAuthBase64));
var fido = new FidoUniversalTwoFactor(mockGenerateChallenge.Object);
var deviceRegistration = CreateTestDeviceRegistration();
var startedAuthentication = fido.StartAuthentication(new FidoAppId(TestVectors.AppIdEnroll), deviceRegistration);
var signatureData = FidoSignatureData.FromWebSafeBase64(TestVectors.SignResponseDataBase64);
var signatureBytes = signatureData.Signature.ToByteArray();
signatureBytes[0] ^= 0xFF;
signatureData = new FidoSignatureData(
signatureData.UserPresence,
signatureData.Counter,
new FidoSignature(signatureBytes));
var authenticateResponse = new FidoAuthenticateResponse(
FidoClientData.FromJson(TestVectors.ClientDataAuth),
signatureData,
FidoKeyHandle.FromWebSafeBase64(TestVectors.KeyHandle));
Assert.Throws <InvalidOperationException>(() => fido.FinishAuthentication(startedAuthentication, authenticateResponse, deviceRegistration, TestVectors.TrustedDomains));
}
internal static FidoAuthenticateResponse CreateGoodAuthenticateResponse()
{
var clientData = FidoClientData.FromJson(TestVectors.ClientDataAuth);
var signatureData = FidoSignatureData.FromBytes(TestVectors.AuthenticateResponse);
var keyHandle = FidoKeyHandle.FromWebSafeBase64(TestVectors.KeyHandle);
return(new FidoAuthenticateResponse(clientData, signatureData, keyHandle));
}
private void VerifyAuthSignature(FidoAppId appId, FidoSignatureData signatureData, FidoClientData clientData,
FidoDeviceRegistration deviceRegistration)
{
if (appId == null)
{
throw new ArgumentNullException("appId");
}
if (signatureData == null)
{
throw new ArgumentNullException("signatureData");
}
if (clientData == null)
{
throw new ArgumentNullException("clientData");
}
if (deviceRegistration == null)
{
throw new ArgumentNullException("deviceRegistration");
}
if (String.IsNullOrEmpty(clientData.RawJsonValue))
{
throw new InvalidOperationException("Client data has no JSON representation");
}
var counterBytes = BitConverter.GetBytes(signatureData.Counter);
if (BitConverter.IsLittleEndian)
{
Array.Reverse(counterBytes);
}
var signedBytes = PackBytes(
Helpers.Sha256(appId.ToString()),
new [] { signatureData.UserPresence },
counterBytes,
Helpers.Sha256(clientData.RawJsonValue));
VerifySignature(deviceRegistration, signatureData.Signature, signedBytes);
if (signatureData.UserPresence != UserPresentFlag)
{
throw new InvalidOperationException("User presence invalid during authentication");
}
}
public void FinishAuthentication_Works()
{
var mockGenerateChallenge = new Mock <IGenerateFidoChallenge>();
mockGenerateChallenge.Setup(x => x.GenerateChallenge()).Returns(WebSafeBase64Converter.FromBase64String(TestVectors.ServerChallengeAuthBase64));
var fido = new FidoUniversalTwoFactor(mockGenerateChallenge.Object);
var deviceRegistration = CreateTestDeviceRegistration();
var startedAuthentication = fido.StartAuthentication(new FidoAppId(TestVectors.AppIdEnroll), deviceRegistration);
var authenticateResponse = new FidoAuthenticateResponse(
FidoClientData.FromJson(TestVectors.ClientDataAuth),
FidoSignatureData.FromWebSafeBase64(TestVectors.SignResponseDataBase64),
FidoKeyHandle.FromWebSafeBase64(TestVectors.KeyHandle));
fido.FinishAuthentication(startedAuthentication, authenticateResponse, deviceRegistration, TestVectors.TrustedDomains);
}
public void FinishAuthentication_UntrustedOrigin(string origin)
{
var mockGenerateChallenge = new Mock <IGenerateFidoChallenge>();
mockGenerateChallenge.Setup(x => x.GenerateChallenge()).Returns(WebSafeBase64Converter.FromBase64String(TestVectors.ServerChallengeAuthBase64));
var fido = new FidoUniversalTwoFactor(mockGenerateChallenge.Object);
var deviceRegistration = CreateTestDeviceRegistration();
var startedAuthentication = fido.StartAuthentication(new FidoAppId(TestVectors.AppIdEnroll), deviceRegistration);
var clientDataAuth = TestVectors.ClientDataAuth.Replace("origin\":\"http://example.com", "origin\":\"" + origin);
var authenticateResponse = new FidoAuthenticateResponse(
FidoClientData.FromJson(clientDataAuth),
FidoSignatureData.FromWebSafeBase64(TestVectors.SignResponseDataBase64),
FidoKeyHandle.FromWebSafeBase64(TestVectors.KeyHandle));
Assert.Throws <InvalidOperationException>(() => fido.FinishAuthentication(startedAuthentication, authenticateResponse, deviceRegistration, TestVectors.TrustedDomains));
}
public void FinishAuthentication_DifferentChallenge()
{
var mockGenerateChallenge = new Mock <IGenerateFidoChallenge>();
mockGenerateChallenge.Setup(x => x.GenerateChallenge()).Returns(WebSafeBase64Converter.FromBase64String(TestVectors.ServerChallengeAuthBase64));
var fido = new FidoUniversalTwoFactor(mockGenerateChallenge.Object);
var deviceRegistration = CreateTestDeviceRegistration();
var startedAuthentication = fido.StartAuthentication(new FidoAppId(TestVectors.AppIdEnroll), deviceRegistration);
var clientDataAuth = TestVectors.ClientDataAuth.Replace("challenge\":\"opsXqUifDriAAmWclinfbS0e-USY0CgyJHe_Otd7z8o", "challenge\":\"different");
var authenticateResponse = new FidoAuthenticateResponse(
FidoClientData.FromJson(clientDataAuth),
FidoSignatureData.FromWebSafeBase64(TestVectors.SignResponseDataBase64),
FidoKeyHandle.FromWebSafeBase64(TestVectors.KeyHandle));
Assert.Throws <InvalidOperationException>(() => fido.FinishAuthentication(startedAuthentication, authenticateResponse, deviceRegistration, TestVectors.TrustedDomains));
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
return(FidoSignatureData.FromWebSafeBase64(reader.Value.ToString()));
}
