java 用mcrypt的3DES加密方式。填充方式为PKCS5Padding

程序员文章站 2024-03-14 14:59:58

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// **
private final static String secretKey = "8LJJJUS5O46PHS5THVVGN18Y" ;

// 向量(偏移量)
private final static String iv = "16922856" ;

// 加密统一使用的编码方式
private final static String encoding = "utf-8" ;


/**
 * 3DES加密
 *
 * @param text 需要加密的文本
 * @return  返回加密过后的密文
 * @throws Exception
 */
public static String encode(String text) throws Exception {
    Key deskey = null ;
    DESedeKeySpec spec = new DESedeKeySpec(secretKey.getBytes());
    SecretKeyFactory keyfactory = SecretKeyFactory.getInstance( "desede" );
    deskey = keyfactory.generateSecret(spec);
    Cipher cipher = Cipher.getInstance( "desede/CBC/PKCS5Padding" ); //设置填充方式PKCS5Padding其中还有zeroPadding等填充方式。每个填充方式的不同对***处理不同
    IvParameterSpec ips = new IvParameterSpec(iv.getBytes());//
    cipher.init(Cipher.ENCRYPT_MODE, deskey, ips);
    byte [] encryptData = cipher.doFinal(text.getBytes(encoding));
    BASE64Encoder encoder = new BASE64Encoder();
    return encoder.encode(encryptData);
}

链接: https://www.cnblogs.com/fish-minuet/p/9679117.html
这里别人对填充模式的详细解读