md5两次加密

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图片.png

MD5Utils.java

public class MD5Util {
    
    public static String md5(String src) {
        return DigestUtils.md5Hex(src);
    }
    
    private static final String salt = "1a2b3c4d";
    
    public static String inputPassToFormPass(String inputPass) {
        String str = ""+salt.charAt(0)+salt.charAt(2) + inputPass +salt.charAt(5) + salt.charAt(4);
        System.out.println(str);
        return md5(str);
    }
    
    public static String formPassToDBPass(String formPass, String salt) {
        String str = ""+salt.charAt(0)+salt.charAt(2) + formPass +salt.charAt(5) + salt.charAt(4);
        return md5(str);
    }
    
    public static String inputPassToDbPass(String inputPass, String saltDB) {
        String formPass = inputPassToFormPass(inputPass);
        String dbPass = formPassToDBPass(formPass, saltDB);
        return dbPass;
    }
    
    public static void main(String[] args) {
//      System.out.println(inputPassToFormPass("123456"));//d3b1294a61a07da9b49b6e22b2cbd7f9
        System.out.println(formPassToDBPass(inputPassToFormPass("123456"), "1a2b3c4d"));
//      System.out.println(inputPassToDbPass("123456", "1a2b3c4d"));//b7797cce01b4b131b433b6acf4add449
    }
    
}

用法：

//验证密码
        String dbPass = user.getPassword();
        String saltDB = user.getSalt();
        String calcPass = MD5Util.formPassToDBPass(formPass, saltDB);
        if(!calcPass.equals(dbPass)) {
            throw new GlobalException(CodeMsg.PASSWORD_ERROR);
        }