public String get()

in app/src/main/java/com/epam/securestorage/providers/themis/ThemisEncryptionProvider.java [85:126]

35 lines of code
9 McCabe index (conditional complexity)


    public String get(@NonNull String key) {
        if (key == null || key.isEmpty()) {
            if (callback != null) {
                callback.onError(GET, new SecureStorageException("Key or Value can't be NULL"));
            }
            return null;
        }
        try {
            key = generateKeyWithPrefix(key);

            String encodedString = preferences.getString(key, null);
            String decryptedData;
            if (encodedString != null) {
                byte[] decodedString = Base64.decode(encodedString, Base64.NO_WRAP);
                SecureCell sc = new SecureCell(key.getBytes(StandardCharsets.UTF_8), MODE_SEAL);

                SecureCellData encryptedData = new SecureCellData(decodedString, null);

                byte[] unprotectedData = sc.unprotect(key.getBytes(StandardCharsets.UTF_8), encryptedData);
                decryptedData = new String(unprotectedData, StandardCharsets.UTF_8);

                if (callback != null) {
                    callback.onComplete(GET);
                }

                return decryptedData;

            } else {
                if (callback != null) {
                    callback.onError(GET, new SecureStorageException("No Such Value"));
                }
                return null;
            }

        } catch (InvalidArgumentException | NullArgumentException | SecureCellException e) {
            e.printStackTrace();
            if (callback != null) {
                callback.onError(GET, e);
            }
        }
        return null;
    }