/// <summary>
/// Create the response to the server, for it to be validate
/// </summary>
private void SignInUserResponse(Intent data)
{
try
{
// Extract the AuthenticatorAssertionResponse.
AuthenticatorAssertionResponse response = AuthenticatorAssertionResponse.DeserializeFromBytes(data.GetByteArrayExtra(Fido.Fido2KeyResponseExtra));
// Preparing the response
var responseJson = Newtonsoft.Json.JsonConvert.SerializeObject(new Fido2AuthenticationChallengeRequest
{
Id = CoreHelpers.Base64UrlEncode(response.GetKeyHandle()),
RawId = CoreHelpers.Base64UrlEncode(response.GetKeyHandle()),
Type = "public-key",
Response = new Fido2AssertionResponse
{
AuthenticatorData = CoreHelpers.Base64UrlEncode(response.GetAuthenticatorData()),
ClientDataJson = CoreHelpers.Base64UrlEncode(response.GetClientDataJSON()),
Signature = CoreHelpers.Base64UrlEncode(response.GetSignature()),
UserHandle = (response.GetUserHandle() != null?CoreHelpers.Base64UrlEncode(response.GetUserHandle()):null),
},
Extensions = null
}
);
// Sending the response
// Messaging Service doesn't run completed if is on UI Thread, this (Device.BeginInvokeOnMainThread) is just to use message service out of UI Thread
Xamarin.Forms.Device.BeginInvokeOnMainThread(() => ((MainActivity)this.application).Fido2Submission(responseJson));
} catch (Exception e) {
Log.Error(_tag_log, e.Message);
} finally
{
Log.Info(_tag_log, "SignInUserResponse() -> finally()");
}
}
public static ServerAssertionResultRequest ConvertToServerAssertionResultRequest(AuthenticatorAssertionResponse authenticatorAssertation)
{
ServerAssertionResultResponseRequest assertionResultResponse = new ServerAssertionResultResponseRequest();
assertionResultResponse.Signature = ByteUtils.ByteToBase64(authenticatorAssertation.GetSignature());
assertionResultResponse.ClientDataJSON = ByteUtils.ByteToBase64(authenticatorAssertation.GetClientDataJson());
assertionResultResponse.AuthenticatorData = ByteUtils.ByteToBase64(authenticatorAssertation.GetAuthenticatorData());
ServerAssertionResultRequest request = new ServerAssertionResultRequest();
request.Response = assertionResultResponse;
request.Id = ByteUtils.ByteToBase64(authenticatorAssertation.GetCredentialId());
request.Type = "public-key";
return(request);
}
