Encrypting an Object with DES

最新推荐文章于 2020-02-26 17:31:49 发布

原创最新推荐文章于 2020-02-26 17:31:49 发布 · 125 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#java

android 专栏收录该内容

54 篇文章

订阅专栏

本文提供了一个使用DES加密算法进行对象加密和解密的Java示例代码。通过生成临时密钥并利用该密钥对自定义类的对象进行封装和解封，展示了如何在实践中实现数据的安全传输。

try {
    // Generate a temporary key. In practice, you would save this key.
    // See also Encrypting with DES Using a Pass Phrase.
    SecretKey key = KeyGenerator.getInstance("DES").generateKey();

    // Prepare the encrypter
    Cipher ecipher = Cipher.getInstance("DES");
    ecipher.init(Cipher.ENCRYPT_MODE, key);

    // Seal (encrypt) the object
    SealedObject so = new SealedObject(new MySecretClass(), ecipher);

    // Get the algorithm used to seal the object
    String algoName = so.getAlgorithm();  // DES

    // Prepare the decrypter
    Cipher dcipher = Cipher.getInstance("DES");
    dcipher.init(Cipher.DECRYPT_MODE, key);

    // Unseal (decrypt) the class
    MySecretClass o = (MySecretClass)so.getObject(dcipher);
} catch (java.io.IOException e) {
} catch (ClassNotFoundException e) {
} catch (javax.crypto.IllegalBlockSizeException e) {
} catch (javax.crypto.BadPaddingException e) {
} catch (javax.crypto.NoSuchPaddingException e) {
} catch (java.security.NoSuchAlgorithmException e) {
} catch (java.security.InvalidKeyException e) {
}

public class MySecretClass implements java.io.Serializable {
    String s = "the secret";
}