public void save()

in app/src/main/java/com/epam/securestorage/providers/cipher/CipherEncryptionProvider.java [114:150]
30 lines of code
9 McCabe index (conditional complexity)

        public void save(@NonNull String key, @NonNull String value) {
            if (key == null || value == null || key.isEmpty() || value.isEmpty()) {
                if (callback != null) {
                    callback.onError(SAVE, new SecureStorageException("Key or Value can't be NULL or empty"));
                }
                return;
            }

            try {
                key = generateKeyWithPrefix(key);

                KeyStore.PrivateKeyEntry privateKeyEntry = (KeyStore.PrivateKeyEntry) keyStore.getEntry(KEY_ALIAS, null);
                // Encrypt the text
                Cipher inputCipher = Cipher.getInstance(CIPHER_TYPE, CIPHER_PROVIDER);
                inputCipher.init(Cipher.ENCRYPT_MODE, privateKeyEntry.getCertificate().getPublicKey());

                ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
                CipherOutputStream cipherOutputStream = new CipherOutputStream(outputStream, inputCipher);
                cipherOutputStream.write(value.getBytes(StandardCharsets.UTF_8));
                cipherOutputStream.close();

                byte[] cryptoText = outputStream.toByteArray();
                String encryptedString = (Base64.encodeToString(cryptoText, Base64.DEFAULT));
                putPref(key, encryptedString);
                outputStream.close();

                if (callback != null) {
                    callback.onComplete(SAVE);
                }
            } catch (NoSuchAlgorithmException | KeyStoreException | InvalidKeyException | IOException | NoSuchPaddingException | UnrecoverableEntryException | NoSuchProviderException e) {
                e.printStackTrace();

                if (callback != null) {
                    callback.onError(SAVE, e);
                }
            }
        }