Пример #1
0
  public static byte[] decrypt(InputStream fromInputStream, String password) throws IOException {
    CipherSession cipherSession = new CipherSession(password);
    MultiCipherInputStream cipherInputStream =
        new MultiCipherInputStream(fromInputStream, cipherSession);
    ByteArrayOutputStream plaintextOutputStream = new ByteArrayOutputStream();

    FileUtil.appendToOutputStream(cipherInputStream, plaintextOutputStream);

    cipherInputStream.close();
    plaintextOutputStream.close();

    return plaintextOutputStream.toByteArray();
  }
Пример #2
0
  public static void encrypt(
      InputStream plaintextInputStream,
      OutputStream ciphertextOutputStream,
      List<CipherSpec> cipherSuites,
      String password)
      throws IOException {
    CipherSession cipherSession = new CipherSession(password);
    OutputStream multiCipherOutputStream =
        new MultiCipherOutputStream(ciphertextOutputStream, cipherSuites, cipherSession);

    FileUtil.appendToOutputStream(plaintextInputStream, multiCipherOutputStream);

    multiCipherOutputStream.close();
    ciphertextOutputStream.close();
  }
Пример #3
0
  private void downloadAndDecryptMultiChunks(Set<MultiChunkEntry> unknownMultiChunks)
      throws StorageException, IOException {
    logger.log(Level.INFO, "- Downloading and extracting multichunks ...");
    TransferManager transferManager = config.getConnection().createTransferManager();

    // TODO [medium] Check existing files by checksum and do NOT download them if they exist
    // locally, or copy them

    for (MultiChunkEntry multiChunkEntry : unknownMultiChunks) {
      File localEncryptedMultiChunkFile =
          config.getCache().getEncryptedMultiChunkFile(multiChunkEntry.getId());
      File localDecryptedMultiChunkFile =
          config.getCache().getDecryptedMultiChunkFile(multiChunkEntry.getId());
      MultiChunkRemoteFile remoteMultiChunkFile =
          new MultiChunkRemoteFile(
              localEncryptedMultiChunkFile
                  .getName()); // TODO [low] Make MultiChunkRemoteFile class, or something like that

      logger.log(
          Level.INFO,
          "  + Downloading multichunk " + StringUtil.toHex(multiChunkEntry.getId()) + " ...");
      transferManager.download(remoteMultiChunkFile, localEncryptedMultiChunkFile);
      result.downloadedMultiChunks.add(multiChunkEntry);

      logger.log(
          Level.INFO,
          "  + Decrypting multichunk " + StringUtil.toHex(multiChunkEntry.getId()) + " ...");
      InputStream multiChunkInputStream =
          config
              .getTransformer()
              .createInputStream(new FileInputStream(localEncryptedMultiChunkFile));
      OutputStream decryptedMultiChunkOutputStream =
          new FileOutputStream(localDecryptedMultiChunkFile);

      // TODO [medium] Calculate checksum while writing file, to verify correct content
      FileUtil.appendToOutputStream(multiChunkInputStream, decryptedMultiChunkOutputStream);

      decryptedMultiChunkOutputStream.close();
      multiChunkInputStream.close();

      logger.log(
          Level.FINE,
          "  + Locally deleting multichunk " + StringUtil.toHex(multiChunkEntry.getId()) + " ...");
      localEncryptedMultiChunkFile.delete();
    }

    transferManager.disconnect();
  }
Пример #4
0
 public static void appendToOutputStream(File fileToAppend, OutputStream outputStream)
     throws IOException {
   appendToOutputStream(new FileInputStream(fileToAppend), outputStream);
 }