Conceal是Facebook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();
评论