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I am Working on a Project, I need some clarification to share data between two sites in a high secure manner. Currently I am using Form Post to share data. But I think about if there is an option to get site-1 session-data from site-2, because I think using a session is more secure. I don't know how to use a sessions between two sites, but I hope someone here will know.

Like this:
Site 1 Coding

$_SESSION['cust_id'] = 'abc';  
$_SESSION['amount'] = '999';  

<a href=<?=$_SESSION['session_id']?>>Click Here</a>  

Site 2 Code in direct.php

$session_id = $_REQUEST['session_id'];  
$shared_data = XYZ_function($session_id);  

$cust_id = $shared_data['cust_id'];  
$amount = $shared_data['amount'];  

or is there any way to do the secure data sharing between two website other than form post, please tell me.

Thank you


in Education & Reference by | 644 views

1 Answer

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Best answer
It seems you're pretty heavy on security. If you need to share data from site 1 to site 2, you should do it through a single consumption bridge:

1). Click on a link on Site 1 to a handler file, let's call it redir.php.

2). Redir.php first checks the existing session data.

3). Redir.php writes relevant info into a DB row, along with some sort of identifier (say, an MD5 hash of the user ID + '_'+ current time), plus a 'consumed' flag, set false.

4). Redir.php does a 301 redirect to Site 2, along with the identifier.

5). Site 2 reads the relevant row out of the DB.

6). If the data is good and has not yet been 'consumed', return a success and mark the data as consumed.

7). If the data has been consumed, throw some sort of error.

There are more complex ways of doing this, but I think this handles what you're trying to do.

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