Java中AES算法的加密

Question

我做了一个包p，里面有一些整数和布尔值。数据包如下所示：

TCPPacket p=new TCPPacket(481,516,23,42,true,false,false,false,false,false,false,false,10,10);

如何在Java中使用AES对数据包进行加密？

Answer 1

我建议您通读甲骨文的Using AES with Java Technology教程。

(第一次点击Google btw。)

Answer 2

这是一些示例代码，应该可以帮助您入门。它使用AES (128)对对象进行加密和解密(使用SealedObject)。

public class App {

    public static void main(String[] args) throws Exception {
        TCPPacket packet = new TCPPacket(481, 516, 23, 42, true, false, false, false, false, false, false, false, 10, 10);

        final char[] password = "secretpass".toCharArray();
        final byte[] salt = "a9v5n38s".getBytes();

        // Create key
        SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
        KeySpec spec = new PBEKeySpec(password, salt, 1024, 128);
        SecretKey tmp = factory.generateSecret(spec);
        SecretKey secret = new SecretKeySpec(tmp.getEncoded(), "AES");

        // Init ciphers
        Cipher cipher = Cipher.getInstance("AES");
        Cipher dcipher = Cipher.getInstance("AES");
        cipher.init(Cipher.ENCRYPT_MODE, secret);
        dcipher.init(Cipher.DECRYPT_MODE, secret);

        // Encrypt packet
        SealedObject so = new SealedObject(packet, cipher);

        // Decrypt packet
        TCPPacket decryptedPacket = (TCPPacket) so.getObject(dcipher);

        System.out.println(decryptedPacket.first);
    }

    private static class TCPPacket implements Serializable {
        private int first;
        public TCPPacket(final int _first, final int i1, final int i2, final int i3, final boolean b, final boolean b1,
                         final boolean b2, final boolean b3, final boolean b4, final boolean b5, final boolean b6,
                         final boolean b7, final int i4, final int i5) {

            first = _first;
        }
        public int getFirst() {
            return first;
        }

    }
}