Conceal 是 非死book 推出的一个用来对数据进行快速加密和认证的开发包，应用可以使用它来加密数据和大文件存储。Conceal 和其他加密软件不同的是它提供了 Smorgasbord 加密算法和选项，这不是一个一般意义上的数据加密包，只是提供一些有用的方法。

示例代码：

// Creates a new Crypto object with default implementations of   // a key chain as well as native library.  Crypto crypto = new Crypto(    new SharedPrefsBackedKeyChain(context),    new SystemNativeCryptoLibrary());     FileOutputStream fileStream = new FileOutputStream(file);     // Creates an output stream which encrypts the data as  // it is written to it and writes it out to the file.  OutputStream outputStream = crypto.getCipherOutputStream(    fileStream,    entity);     // Write plaintext to it.  outputStream.write(plainText);  outputStream.close();

项目主页：http://www.open-open.com/lib/view/home/1424578047010