示例#1
0
  /**
   * Asymmetrically encrypts content inheriting from {@link NetworkContent}. A default key length
   * will be used.
   *
   * @param content the content to be encrypted.
   * @param publicKey The asymmetric public key with which the content will be encrypted
   * @param keyLength the strength of the encryption
   * @return the encrypted content
   * @throws DataLengthException
   * @throws InvalidKeyException
   * @throws IllegalStateException
   * @throws InvalidCipherTextException
   * @throws IllegalBlockSizeException
   * @throws BadPaddingException
   * @throws IOException
   */
  public static HybridEncryptedContent encryptHybrid(NetworkContent content, PublicKey publicKey)
      throws DataLengthException, InvalidKeyException, IllegalStateException,
          InvalidCipherTextException, IllegalBlockSizeException, BadPaddingException, IOException {
    byte[] serialized = EncryptionUtil.serializeObject(content);

    HybridEncryptedContent encryptHybrid =
        EncryptionUtil.encryptHybrid(serialized, publicKey, H2HConstants.KEYLENGTH_HYBRID_AES);
    encryptHybrid.setTimeToLive(content.getTimeToLive());
    return encryptHybrid;
  }
示例#2
0
  /**
   * Symmetrically encrypts content inheriting from {@link NetworkContent} by means of the AES
   * algorithm. The content first gets serialized, then encrypted.
   *
   * @param content the content to be encrypted. Can be of any type that extends {@link
   *     NetworkContent}.
   * @param aesKey The symmetric key with which the content will be encrypted.
   * @return EncryptedContent which contains the encrypted byte[] content as well as the AES
   *     initialization vector (IV).
   * @throws InvalidCipherTextException
   * @throws IllegalStateException
   * @throws DataLengthException
   * @throws IOException
   */
  public static EncryptedNetworkContent encryptAES(NetworkContent content, SecretKey aesKey)
      throws DataLengthException, IllegalStateException, InvalidCipherTextException, IOException {
    byte[] serialized = EncryptionUtil.serializeObject(content);
    byte[] initVector = EncryptionUtil.generateIV();
    byte[] encryptedContent = EncryptionUtil.encryptAES(serialized, aesKey, initVector);

    EncryptedNetworkContent encryptedNetworkContent =
        new EncryptedNetworkContent(encryptedContent, initVector);
    encryptedNetworkContent.setTimeToLive(content.getTimeToLive());
    return encryptedNetworkContent;
  }