java DES加解密及Wrong key size错误

如下的DES加密方法会报错：Wrong key size

 

    public static String encryptDES(String source) throws Exception{
        SecretKeySpec skeySpec = new SecretKeySpec(ckplayerkey.getBytes(), "DES");
        Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
        byte[] encrypted = cipher.doFinal(source.getBytes("utf8"));
        String data=Base64.encodeBase64String(encrypted);
        return data;
    }

一开始以为将AES加密方法中的关键字直接改为DES就是DES加密了，没想到报错 Wrong key size，因为前端是用cryptojs加密的，所以找到了一个答案：https://blog.csdn.net/king7950/article/details/70157463  根据该文章在java端加密成功~~

DES加密 关键代码如下：

    /** * DES加密 */
    public static String encodeDES(String datasource){
        try{
            SecureRandom random = new SecureRandom();
            DESKeySpec desKey = new DESKeySpec(ckplayerkey.getBytes());
            //创建一个密匙工厂，然后用它把DESKeySpec转换成
            SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
            SecretKey securekey = keyFactory.generateSecret(desKey);
            //Cipher对象实际完成加密操作
            Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
            //用密匙初始化Cipher对象
            cipher.init(Cipher.ENCRYPT_MODE, securekey, random);
            //现在，获取数据并加密
            return Base64.encodeBase64String(cipher.doFinal(datasource.getBytes()));

        }catch(Throwable e){
            e.printStackTrace();
            return null;
        }
    }

 

DES解密代码（未测试）如下：

/** * DES解密 */
public String decodeDES(String src) throws Exception {
    // DES算法要求有一个可信任的随机数源
    SecureRandom random = new SecureRandom();
    // 创建一个DESKeySpec对象
    DESKeySpec desKey = new DESKeySpec(KEY.getBytes(CODE_TYPE));
    // 创建一个密匙工厂
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
    // 将DESKeySpec对象转换成SecretKey对象
    SecretKey securekey = keyFactory.generateSecret(desKey);
    // Cipher对象实际完成解密操作
    Cipher cipher = Cipher.getInstance("DES");
    // 用密匙初始化Cipher对象
    cipher.init(Cipher.DECRYPT_MODE, securekey, random);
    // 真正开始解密操作
    return IOUtils.toString(cipher.doFinal(Base64.decodeBase64(src)),"UTF-8");
}