コード例 #1
0
        private void OnClickFingerAuthWithCrpObj(object sender, EventArgs e)
        {
            string Tag       = "FingerAuthWithCrpObj";
            int    errorCode = fingerprintManager.CanAuth();

            if (errorCode != 0)
            {
                log.Info(Tag, "Can not authenticate. errorCode=" + errorCode);
                return;
            }

            // Construct CryptoObject.
            Cipher cipher = new HwBioAuthnCipherFactory("hw_test_fingerprint", true).GetCipher();

            if (cipher == null)
            {
                log.Info(Tag, "Failed to create Cipher object.");
                return;
            }
            CryptoObject crypto = new CryptoObject(cipher);

            log.Info(Tag, "Start fingerprint authentication with CryptoObject.\nAuthenticating......\n");

            fingerprintManager.Auth(crypto);
        }
コード例 #2
0
        private void OnClickFaceAuthWithCrpObj(object sender, EventArgs e)
        {
            string Tag = "FaceAuthWithCrpObj";

            Android.Content.PM.Permission permissionCheck = Android.Content.PM.Permission.Granted;
            if (Build.VERSION.SdkInt >= BuildVersionCodes.M)
            {
                permissionCheck = CheckSelfPermission(Manifest.Permission.Camera);
            }
            if (permissionCheck != Android.Content.PM.Permission.Granted)
            {
                log.Info(Tag, "The camera permission is not enabled. Please enable it.");

                // request camera permissions
                if (Build.VERSION.SdkInt >= BuildVersionCodes.M)
                {
                    RequestPermissions(new string[] { Manifest.Permission.Camera }, 1);
                }
                return;
            }
            BioAuthnCallback callback = new FidoBioAuthnCallback();
            // Cancellation Signal
            CancellationSignal cancellationSignal = new CancellationSignal();

            FaceManager faceManager = new FaceManager(this);

            Log.Info("HasEnrolledTemplates", faceManager.HasEnrolledTemplates.ToString());
            Log.Info("IsHardwareDetected", faceManager.IsHardwareDetected.ToString());
            Log.Info("CanAuth", faceManager.CanAuth().ToString());

            log.Info(Tag, $"IsHardwareDetected:{faceManager.IsHardwareDetected}");

            // Checks whether 3D facial authentication can be used.
            int errorCode = faceManager.CanAuth();

            if (errorCode != 0)
            {
                log.Info(Tag, "Can not authenticate. errorCode=" + errorCode);
                return;
            }
            // flags
            int flags = 0;

            // Authentication messsage handler.
            Handler handler = null;

            // Recommended CryptoObject to be set to null. KeyStore is not associated with face authentication in current
            // version. KeyGenParameterSpec.Builder.SetUserAuthenticationRequired() must be set false in this scenario.
            CryptoObject crypto = null;

            log.Info(Tag, "Start face authentication.\nAuthenticating......\n");
            faceManager.Auth(crypto, cancellationSignal, flags, callback, handler);
        }
コード例 #3
0
        /// <summary>
        /// Shows the fingerprint prompt with CryptoObject.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OnClickFingerAuthWithCrpObj(object sender, EventArgs e)
        {
            string Tag = "FingerAuthWithCrpObj";

            BioAuthnManager bioAuthnManager = new BioAuthnManager(this);
            int             errorCode       = bioAuthnManager.CanAuth();

            if (errorCode != 0)
            {
                log.Info(Tag, "Can not authenticate. errorCode=" + errorCode);
                return;
            }

            // build prompt info
            BioAuthnPrompt.PromptInfo.Builder builder =
                new BioAuthnPrompt.PromptInfo.Builder().SetTitle("This is the title.")
                .SetSubtitle("This is the subtitle.")
                .SetDescription("This is the description.");

            // The user will first be prompted to authenticate with biometrics, but also given the option to
            // authenticate with their device PIN, pattern, or password. SetNegativeButtonText(string) should
            // not be set if this is set to true.
            // builder.SetDeviceCredentialAllowed(true);

            // Set the text for the negative button. SetDeviceCredentialAllowed(true) should not be set if this
            // button text is set.
            builder.SetNegativeButtonText("This is the 'Cancel' button.");

            BioAuthnPrompt.PromptInfo info = builder.Build();

            // Construct CryptoObject.
            Cipher cipher = new HwBioAuthnCipherFactory("hw_test_fingerprint", true).GetCipher();

            if (cipher == null)
            {
                log.Info(Tag, "Failed to create Cipher object.");
                return;
            }
            CryptoObject crypto = new CryptoObject(cipher);

            log.Info(Tag, "Start fingerprint authentication with CryptoObject.\nAuthenticating......\n");

            // When user CryptoObject, BiometricPrompt.PromptInfo.Builder.SetDeviceCredentialAllowed(true) is not allow.
            // Call BiometricPrompt.Authenticate(BiometricPrompt.PromptInfo info) if
            // BiometricPrompt.PromptInfo.Builder.SetDeviceCredentialAllowed(true) is set to true.
            Log.Info("CanAuth", bioAuthnManager.CanAuth().ToString());
            bioAuthnPrompt.Auth(info, crypto);
            Thread.Sleep(10000);
            bioAuthnPrompt.CancelAuth();
        }