Override Magento Module MD5 to SHA1

Override Magento Module MD5 to SHA1

Here I am going to override the hash function in Encryption class to sha1 instead of md5.

Original file is located in below path.

\app\code\core\Mage\Core\Model\Encryption.php.

To override above function I will follow standards given by Magento.

First I will create the directory structure.

For this example I will use MyNameSpace as my Module name

\app\code\local\MyNameSpace\MyModule

\app\code\local\MyNameSpace\MyModule\Block

\app\code\local\MyNameSpace\MyModule\controllers

\app\code\local\MyNameSpace\MyModule\etc

\app\code\local\MyNameSpace\MyModule\Helper

\app\code\local\MyNameSpace\MyModule\Model

\app\code\local\MyNameSpace\MyModule\sql

Second I am going to create the Source files which are needed for this task.

Create the MyNameSpace_All.xml in following path and save it with below codes.

As you know this file will tells to Magento that we are using MyModule Module.

\app\etc\modules\MyNameSpace_All.xml

<?xml version="1.0"?>
<config>
    <modules>
        <MyNameSpace_MyModule>
            <active>true</active>
            <codePool>local</codePool>
        </MyNameSpace_MyModule>
    </modules>
</config>

Add the following codes in below file (you have to create as normally do).

config.xml explain using xml comments J.

\app\code\local\MyNameSpace\MyModule\etc\config.xml

<?xml version="1.0"?>
<config>
    <modules>
        <MyNameSpace_MyModule>
            <version>0.1.0</version>
            <depends>
             <Mage_Core />
            </depends>
        </MyNameSpace_MyModule>
    </modules>
    
    <global>
        <models>
            <core>
                <rewrite>
                 <encryption>MyNameSpace_MyModule_Model_Encryption</encryption>
                </rewrite>
            </core>
        </models>
        <helpers>
            <core>
             <encryption_model>MyNameSpace_MyModule_Model_Encryption</encryption_model>
            </core>
        </helpers>
    </global>
    
    <frontend>
        <routers>
            <mynamespace_mymodule>
             <use>standard</use>
                <args>
                    <module>MyNameSpace_MyModule</module>
                    <frontName>mymodule</frontName>
                </args>
            </mynamespace_mymodule>
        </routers>
    </frontend>
</config>

Writeing the new Encryption Class which will have the new hashing function

\app\code\local\MyNameSpace\MyModule\Model\Encryption.php

<?php
class MyNameSpace_MyModule_Model_Encryption extends Mage_Core_Model_Encryption
{
    public function  hash($data)
{
        return sha1($data);
    }
}
?>

Ok Done. You can try sha and md5 difference now. I checked through when registering a new customer. New sha1 values located in customer_entity_varchar table in your database.