Dinesh on Java

In Spring Security tutorial, we will discuss about Password Hashing or Encoding through SHA hashing algorithm. In last Spring Security form login example, the password is stored in clear-text, it is vulnerable to attack. In practice, recommend to hash your password before storing them. Here we will see how to use SHA hashing algorithm to hash password, and use the hashed password to perform the login authentication in Spring Security.

Spring Security supports following hashing algorithms :

• plaintext
• sha
• sha-256
• md5
• md4

Here we will perform password hashing through SHA hashing algorithm. We will use this hashed password to accomplish the login authentication in Spring Security.

Required Tools used for this Application:

• Spring MVC 3.0.1
• Spring Security 3.1.0
• STS 2.8.1.RELEASE
• Tomcat 7
• Jdk 1.7
• Jacksum 1.7.0

Password Hashing:
For password hashing, we are incorporating Jacksum 1.7.0, you can download it from here.

After downloading it, execute the below CMD command to generate hash value of the plain text/password, by using the same folder path where you download it ,as follows :

In above my password is “sweetu” after hashing we will get as “22c27ff8a5be6260871523871ee37d0768eb02fc”
when it is “sweety” then we will get as “15eabb8159c574ddb45fea23e853e18bc599ce87“.

In original example, password is stored in clear text. As follows.

<security:authentication-manager>
   <security:authentication-provider>
   <security:password-encoder hash="sha"/>
    <security:user-service>
 <security:user name="dineshonjava" password="sweety" authorities="ROLE_USER" />
     </security:user-service>
  </security:authentication-provider>
</security:authentication-manager>

Now, use “jacksum” to hash the password “sweety” with SHA algorithm is “15eabb8159c574ddb45fea23e853e18bc599ce87“.

<security:authentication-manager>
   <security:authentication-provider>
  <security:password-encoder hash="sha"/>
    <security:user-service>
 <security:user name="dineshonjava" 
        password="15eabb8159c574ddb45fea23e853e18bc599ce87" 
        authorities="ROLE_USER" />
    </security:user-service>
  </security:authentication-provider>
</security:authentication-manager>

Use this hashed password in sdnext-security.xml as follows :

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

       xmlns:>

Now rest of the code is same as the previous example no need to discuss every file just look and run the application.

Running the example
Export the example as war and deploy it Tomcat 7 server. While browsing the project you will get the following screen for loging:
Access URL "http://localhost:8080/sdnext/index", Spring will redirect to your custom login form.

URL : http://localhost:8080/sdnext/login

If username/password is correct, then

URL : http://localhost:8080/sdnext/index

Download Source Code-

SpringSecurityPasswordHashing.zip
References-
https://www.dineshonjava.com/spring-security-form-based-login-example/
Spring Security
Spring Security documentation

SHA-1 hashing algorithm 

Jacksum Java library 
  
Spring Security Related Posts

Spring Security Interview Questions and Answers
Spring Security Java Based Configuration with Example
Spring Security XML Namespace Configuration Example
Spring Security XML Based Hello World Example
Spring Security form-based login example 
Spring Security Login Form Based Example Using Database
Spring Security Authentication Example Using HTTP Basic 
 Spring Security Authorized Access Control Example 
Spring Security Customized Access Denied Page
Spring Security Custom Error Message
 Spring Security Logout Example
Spring Security Fetch Logged in Username
Spring Security Password Hashing

 

 
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