Java实现MD5散列

谁借莪１个温暖的怀抱￠ 2021-11-11 17:26 263阅读 0赞

生成MD5值

String str = "12345";
    MessageDigest digest =MessageDigest.getInstance("MD5");
    byte[] bs = digest.digest(str.getBytes());
    BytesPrint("未经过散列的S:",bs);
    String bb = "";
    for(int i =0;i<bs.length;i++)
    {
        bb += byteHEX(bs[i]);
    }
    System.out.println(bb);
    
    String aa = new String(bs, "iso-8859-1");//直接转化成字符串，省地

String str = "12345";

MessageDigest digest =MessageDigest.getInstance("MD5");

byte[] bs = digest.digest(str.getBytes());

BytesPrint("未经过散列的S:",bs);

String bb = "";

for(int i =0;i<bs.length;i++)

{

bb += byteHEX(bs[i]);

}

System.out.println(bb);

String aa = new String(bs, "iso-8859-1");//直接转化成字符串，省地

打印出来

82 7c cb 0e ea 8a 70 6c 4c 34 a1 68 91 f8 4e 7b

static public void BytesPrint(String string, byte[] bs)
    {
        System.out.print(string);
        for (int i=0;i<bs.length;i++)
        {
            System.out.printf("%02x ",bs[i]);
        }
        System.out.println("");
    }

static public void BytesPrint(String string, byte[] bs)

{

System.out.print(string);

for (int i=0;i<bs.length;i++)

{

System.out.printf("%02x ",bs[i]);

}

System.out.println("");

}

生成字符串

public static String byteHEX(byte ib)
    {
        char[] Digit ={ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
        char[] ob = new char[2];
        ob[0] = Digit[(ib >>> 4) & 0X0F];
        ob[1] = Digit[ib & 0X0F];
        String s = new String(ob);
        return s;
    }

public static String byteHEX(byte ib)

{

char[] Digit ={ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };

char[] ob = new char[2];

ob[0] = Digit[(ib >>> 4) & 0X0F];

ob[1] = Digit[ib & 0X0F];

String s = new String(ob);

return s;

}

参考：

[https://blog.csdn.net/kuangfengbuyi/article/details/52087413][https_blog.csdn.net_kuangfengbuyi_article_details_52087413]

[来自为知笔记(Wiz)][Wiz]

转载于:https://www.cnblogs.com/MarmaladeCat/p/3dbfb8890866d20beaffe2c96825e6f9.html

[https_blog.csdn.net_kuangfengbuyi_article_details_52087413]: https://blog.csdn.net/kuangfengbuyi/article/details/52087413
[Wiz]: http://www.wiz.cn/i/77ad7a1f