AHv1i7Cn

1private boolean initCipher() {
2        try {
3          Cipher cipher = Cipher.getInstance(
4                    KeyProperties.KEY_ALGORITHM_AES + "/"
5                            + KeyProperties.BLOCK_MODE_CBC + "/"
6                            + KeyProperties.ENCRYPTION_PADDING_PKCS7);
7
8        } catch (NoSuchAlgorithmException |
9                NoSuchPaddingException e) {
10            throw new RuntimeException("Failed to get Cipher", e);
11        }
12
13        try {
14            keyStore.load(null);
15            SecretKey key = (SecretKey) keyStore.getKey(KEY_NAME,
16                    null);
17            cipher.init(Cipher.ENCRYPT_MODE, key);
18            return true;
19
20
21        } catch (KeyPermanentlyInvalidatedException e) {
22            return false;
23
24        } catch (KeyStoreException | CertificateException
25                | UnrecoverableKeyException | IOException
26                | NoSuchAlgorithmException | InvalidKeyException e) {
27
28            throw new RuntimeException("Failed to init Cipher", e);
29        }
30    }