本文记录基于已有的SSM+Shiro框架项目，将密码验证方式改为BCrypt随机盐加密算法。
众所皆知，MD5加密方式虽然不可逆但并不安全，BCrypt加密算法比MD5安全性更高，因此很多项目的加密方式也需要做一个改变和升级，关于BCrypt加密算法更多具体的原理可以参考此文：https://blog.csdn.net/m0_37609579/article/details/100785947
shiro最常见的密码验证方式，也是他提供默认的加密方式一般为MD5以及MD5加盐的处理，因此需要自己手动配置做一些调整达成BCrypt随机盐加密。
一、pom.xml中引入jBCrypt的依赖
<!-- jBCrypt -->
<dependency>
<groupId>de.svenkubiak</groupId>
<artifactId>jBCrypt</artifactId>
<version>0.4.1</version>
</dependency>
二、创建Bcrypt加密工具类
import org.mindrot.jbcrypt.BCrypt;
/**
* @ClassName: BcryptUtil
* @Author: XIZI
* @Description: Bcrypt随机盐加密
*/
public class BcryptUtil {
/**
* 对明文密码进行加密,并返回加密后的密码
*
* @param password 明文密码
* @return
*/
public static String encode(String password) {
return BCrypt.hashpw(password, BCrypt.gensalt());
}
/**
* 将明文密码跟加密后的密码进行匹配，如果一致返回true,否则返回false
*
* @param password 明文密码
* @param encodePassword 加密后的密码
* @return
*/
public static boolean match(String password, String encodePassword) {
return BCrypt.checkpw(password, encodePassword);
}
}
三、创建一个自定义密码凭证
import com.xizi.util.BcryptUtil;
import org.apache.log4j.Logger;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.authc.credential.SimpleCredentialsMatcher;
/**
* @ClassName: CustomCredentialsMatcher
* @Author: XIZI
* @Description: 自定义密码凭证
*/
public class CustomCredentialsMatcher extends SimpleCredentialsMatcher {
@Override
public boolean doCredentialsMatch(AuthenticationToken token, AuthenticationInfo info) {
UsernamePasswordToken userToken = (UsernamePasswordToken) token;
String password = new String(userToken.getPassword());
//这是数据库里查出来的（加密后的）密码
String encodePassword = info.getCredentials().toString();
//进行比对
return BcryptUtil.match(password, encodePassword);
}
}
四、修改shiro的配置文件 spring-shiro.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">
<property name="securityManager" ref="securityManager"/>
<property name="loginUrl" value="/userLogin/toLogin"/>
<property name="unauthorizedUrl" value="/userLogin/toNoroot"/><!-- 没有权限跳转的地址 -->
<property name="filterChainDefinitions">
<value>
</value>
</property>
</bean>
<bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
<property name="realm" ref="MyRealm"/>
</bean>
<!--主要修改下面这两块配置 -->
<!-- 自定义的Realm -->
<bean id="MyRealm" class="com.xizi.shiro.MyRealm">
<property name="credentialsMatcher" ref="credentialsMatcher"/>
</bean>
<!-- 自定义密码凭证匹配器 -->
<bean id="credentialsMatcher" class="com.xizi.shiro.CustomCredentialsMatcher"/>
</beans>
五、实现shiro逻辑，将BCrypt加密方式融入
import org.apache.log4j.Logger;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.springframework.beans.factory.annotation.Autowired;
import java.util.List;
/**
* @ClassName: MyRealm
* @Author: XIZI
* @Description: shiro逻辑
*/
public class MyRealm extends AuthorizingRealm {
@Autowired
SysUserDao sysUserDao;
/**
* 授权，在配有缓存的情况下，只加载一次
*
* @param principals
* @return
*/
@Override
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
//获取帐号信息
String account = (String)principals.getPrimaryPrincipal();
SysUser user = sysUserDao.select(account);
if (null != user) {
//相关信息赋值
SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
//此处省略相关逻辑处理
//....
return info;
}
return null;
}
/**
* 认证登录 -- 查询数据库，如果该用户名正确，得到正确的数据，并返回正确的数据
*
* @param authenticationToken
* @return
* @throws AuthenticationException
*/
@Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
//获取帐号 判断帐号是否存在
String account = (String) authenticationToken.getPrincipal();
SysUser user = sysUserDao.select(account);
if (null != user) {
//shiro校验
String passWord = user.getPassword();
String realName = user.getRealName();
//此处密码验证，会调用我们配置Bcrypt加密的自定义密码凭证进行验证
SimpleAuthenticationInfo authenticationInfo = new SimpleAuthenticationInfo(account, passWord, null, realName);
return authenticationInfo;
}
return null;
}
}
六、service层的shiro逻辑
import com.xizi.constants.Constants;
import com.xizi.exception.ErrorException;
import org.apache.log4j.Logger;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.Subject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import javax.servlet.http.HttpServletRequest;
/**
* @ClassName: LoginService
* @Author: XIZI
* @Description: 登录验证逻辑
*/
@Service("LoginService")
public class LoginService {
/**
* 日志
*/
private static final Logger logger = Logger.getLogger(LoginService.class);
/**
* SHIRO登陆
*
* @param account 帐号
* @param password 明文密码
* @param request request
*/
private void login(String account, String password, HttpServletRequest request) throws ErrorException {
//shiro
UsernamePasswordToken token = new UsernamePasswordToken(account, password);
token.setRememberMe(false);
try {
Subject subject = SecurityUtils.getSubject();
subject.login(token);
} catch (UnknownAccountException e) {
logger.error("账号不存在！");
//向上抛出自定义报错
throw new ErrorException(Constants.API_ERROR_FAIL, "账号或密码错误");
} catch (IncorrectCredentialsException e) {
logger.error("密码错误！");
//向上抛出自定义报错
throw new ErrorException(Constants.API_ERROR_FAIL, "账号或密码错误");
}
}
}
七、接口调用结果
自己本地生成一串加密后的字符串存储数据库中测试。
