Example usage for android.security.keystore UserNotAuthenticatedException getMessage

Introduction

In this page you can find the example usage for android.security.keystore UserNotAuthenticatedException getMessage.

Prototype

public String getMessage() 

Source Link

Document

Returns the detail message string of this throwable.

Usage

From source file:com.elkriefy.android.apps.authenticationexample.credentialsgrace.CredGraceActivity.java

/**
 * Tries to encrypt some data with the generated key in {@link #createKey} which is
 * only works if the user has just authenticated via device credentials.
 *///from  w ww. java2 s  .com
private boolean tryEncrypt() {
    try {
        KeyStore keyStore = KeyStore.getInstance("AndroidKeyStore");
        keyStore.load(null);
        SecretKey secretKey = (SecretKey) keyStore.getKey(KEY_NAME, null);
        Cipher cipher = Cipher.getInstance(KeyProperties.KEY_ALGORITHM_AES + "/" + KeyProperties.BLOCK_MODE_CBC
                + "/" + KeyProperties.ENCRYPTION_PADDING_PKCS7);

        // Try encrypting something, it will only work if the user authenticated within
        // the last AUTHENTICATION_DURATION_SECONDS seconds.
        cipher.init(Cipher.ENCRYPT_MODE, secretKey);
        cipher.doFinal(SECRET_BYTE_ARRAY);

        // If the user has recently authenticated, you will reach here.
        showAlreadyAuthenticated();
        return true;
    } catch (UserNotAuthenticatedException e) {
        // User is not authenticated, let's authenticate with device credentials.
        showAuthenticationScreen();
        return false;
    } catch (KeyPermanentlyInvalidatedException e) {
        // This happens if the lock screen has been disabled or reset after the key was
        // generated after the key was generated.
        Toast.makeText(this, "Keys are invalidated after created. Retry the purchase\n" + e.getMessage(),
                Toast.LENGTH_LONG).show();
        return false;
    } catch (BadPaddingException | IllegalBlockSizeException | KeyStoreException | CertificateException
            | UnrecoverableKeyException | IOException | NoSuchPaddingException | NoSuchAlgorithmException
            | InvalidKeyException e) {
        throw new RuntimeException(e);
    }
}

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