Shiro 密码的加密应用(六)

- 日理万妓 2024-02-18 20:51 60阅读 0赞

***一.密码的比对***

***(1.1) 按住UsernamePasswordToken到源代码里,设置断点,进行调试.如下所示:***

***![20180605102812231][]***

***(1.2)调试***

***![20180605102724690][]***

***![20180605102716623][]***

***(1.3)调试CredentialsMatcher接口***

***![20180605103153504][]***

***选中CredentialsMatcher接口,按住Ctrl+T能查看到有很多加密的方式***

***![20180605103144795][]***

**总结:**

**通过AuthenticatingRealm 的credentialsMatcher属性来进行密码比对哦!**

**doCredentialsMatch(AuthenticationToken token, AuthenticationInfo info);**

**二.密码的MD5加密**

2.1.如何把一个字符串加密为MD5

![20180605103715107][]

2.2.替换当前Realm的credentialsMatch属性,直接使用HashedCredentialsMatch对象,

并设置加密算法就ok!

application.xml配置文件修改:

![20180605103735312][]

ShiroRealm类中测试

![2018060510390018][]

将原来的密码修改成这个加密后的值哦!

***![20180605103912869][]***

***运行也是Ok的!***

***三.密码的MD5盐值加密***

3.1.为何用MD5盐值加密?

由于两个原始密码相同,加密后也是一样的,那么能否加密后的值不一样呢!  
3.2.如何做:  
(a)在doGetAuthenticationInfo方法返回值创建SimpleAuthenticationInfo对象的时候,  
需要使用 SimpleAuthenticationInfo(principal, credentials, credentialsSalt, realmName)构造器.  
(b)使用ByteSource.Util.bytes()来计算盐值  
(c)盐值需要唯一:一般使用随机数字符串或userid  
(d)使用new SimpleHash(hashAlgorithmName, credentials, salt, hashIterations);

来计算盐值加密后的密码的值

**注意:使用ByteSource.Util.bytes()来计算盐值**

![20180605104159880][].**修改ShiroRealm类**

![20180605104523523][]

运行:

(1)用户mike/admin,密码aaa登录ok!

![20180605104719985][]

![20180605104736548][]

(2)用户your,密码aaa登录no!

![20180605104806787][]

![20180605104910931][]

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