shiro 密码加密和解密

前言：对于登录的密码信息加密，增加密码破解难度。在密码使用Shiro的hash加密方法和自定义方法加密算法。

步骤

1.告诉shiro密码使用何种加密方法

2.告诉shiro如何验证加密密码是否正确

1.告诉shiro密码使用何种加密方法

通过Credentials 和 CredentialsMatcher告诉shiro什么加密和密码校验

在配置文件上使用如何使用它们俩告诉shiro如何加密和校验

INI 文件的main 增加如下，可以参考shiro 使用 InI 验证

myRealm = com.demo.MyRealm 

customMatcher =  com.demo.CustomCredentialsMatcher

myRealm.credentialsMatcher = $customMatcher

与spring集成告诉shiro

       

           

               

           

       

   

2.告诉shiro如何验证加密密码是否正确

告诉shiro如何验证加密密码，通过SimpleCredentialsMatcher或HashedCredentialsMatcher

SimpleCredentialsMatcher（简单证明匹配）： SimpleCredentialsMatcher对存储的用户凭证和从AuthenticationToken提交的用户凭证直接执行相等的检查。

HashedCredentialsMatcher：取代将凭证按它们原始形式存储并执行原始数据的对比，存储终端用户的凭证（如密码）更安全的办法是在存储数据之前，先进行hash运算。

密码校验方法继承SimpleCredentialsMatcher或HashedCredentialsMatcher类，实现doCredentialsMatch方法

示类
-------------------------------------------------------------------------------------------------------------
public class CustomCredentialsMatcher extends SimpleCredentialsMatcher {

    @Override
    public boolean doCredentialsMatch(AuthenticationToken authcToken, AuthenticationInfo info) {
        UsernamePasswordToken token = (UsernamePasswordToken) authcToken;

        Object tokenCredentials = encrypt(String.valueOf(token.getPassword()));
        Object accountCredentials = getCredentials(info);
        //将密码加密与系统加密后的密码校验，内容一致就返回true,不一致就返回false
        return equals(tokenCredentials, accountCredentials);
    }

    //将传进来密码加密方法
    private String encrypt(String data) {
        String sha384Hex = new Sha384Hash(data).toBase64();
        System.out.println(data + ":" + sha384Hex);
        return sha384Hex;
    }
}

-----------------关于自定义Realm,通过Realm与应用交互验证身份

public class MyRealm extends AuthorizingRealm {

    private static Logger logger = LoggerFactory.getLogger(MyRealm.class);

    public MyRealm() {
        super();    //To change body of overridden methods use File | Settings | File Templates.
    }
//认证
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authcToken) throws AuthenticationException {
        UsernamePasswordToken token = (UsernamePasswordToken) authcToken;

        UsernamePasswordToken usernamePasswordToken = (UsernamePasswordToken) token;

        String username = usernamePasswordToken.getUsername();

/*        logger.info("用户名：{}", token.getUsername());
        logger.info("用户密码：{}", token.getPassword());*/


        if (username == null) {
            throw new AccountException("用户名不能为空");
        }

        //TODO 取数据库
        User user = new User();
        user.setName("汤汤");
      //  user.setPassWord("5201314");
        user.setPassWord("Mug2tZdS/WCdxOOfCHXPcdQyVT5kqBimrBM04UEj9Dma+XaasHvZZckw/OGjWj8J");
        user.setRoles("admin");
        return new SimpleAuthenticationInfo(user.getName(), user.getPassWord(), getName());
    }
   //授权
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        if (principals == null) {
            throw new AuthorizationException("Principal对象不能为空");
        }

      /*  String userName = (String) principals.fromRealm(getName()).iterator().next();*/
        String userName = (String) principals.fromRealm(getName()).iterator().next();

        if (userName != null && userName.equals("汤汤")) {
            SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
           /* info.addStringPermission("admin");*/

            List rolesList = new ArrayList();
            rolesList.add("admin");

            info.addRoles(rolesList);
            return info;
        } else {
            return null;
        }
    }
}