REST安全实践·3.DIGEST认证

3. UserDatabaseRealm + DIGEST认证

• Accesses authentication information stored in an UserDatabase JNDI resource, which is typically backed by an XML document (conf/tomcat-users.xml).
• 通过读取XML格式的JNDI资源，获取认证信息

3.1 创建Realm所需的数据表

mysqldump simple_service_book -uroot -p > security.sql

3.2 配置UserDatabaseRealm

$CATALINA_BASE/conf/server.xml

<Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> 

Eclipse内置Tomcat配置 

$CATALINA_BASE/conf/tomcat-users.xml

<?xml version="1.0" encoding="UTF-8"?>
<tomcat-users>
    <role rolename="admin" />
    <role rolename="user" />
    <user name="eric" password="han" roles="admin" />
    <user name="caroline" password="zhang" roles="user" />
</tomcat-users>

Eclipse内置Tomcat tomcat-users配置 

3.3 数据库驱动

$CATALINA_HOME/lib

M2_REPO/mysql/mysql-connector-java/5.1.25/mysql-connector-java-5.1.25.jar

3.4 配置应用的web.xml

/security-rest/src/main/webapp/WEB-INF/web.xml

<security-constraint>
    <web-resource-collection>
        <url-pattern>/webapi/*</url-pattern>
        <http-method>GET</http-method>
        <http-method>POST</http-method>
        <http-method>UPDATE</http-method>
        <http-method>DELETE</http-method>
    </web-resource-collection>
    <auth-constraint>
        <role-name>admin</role-name>
    </auth-constraint>
</security-constraint>

<security-constraint>
    <web-resource-collection>
        <url-pattern>/webapi/*</url-pattern>
        <http-method>GET</http-method>
    </web-resource-collection>
    <auth-constraint>
        <role-name>user</role-name>
    </auth-constraint>
</security-constraint>

<login-config>
    <auth-method>DIGEST</auth-method>
</login-config>

3.5 DIGEST认证

C:\Users\hanl.m2\repository\org\apache\tomcat\tomcat-catalina\7.0.42\tomcat-catalina-7.0.42-sources.jar

Realm.authenticate()  组合加密、比较都是在服务器端完成的。 md5(md5(username:realm:password):nonce:nc:cnonce:qop:md5(httpmethod:uri))

3.6 应用权限测试

DIGEST认证与BASIC认证的算法不同，但呈现方式相同。都是弹出窗口，让用户输入用户名和口令。