note 94096 added to book.mcrypt

From: Date: Fri, 16 Oct 2009 03:11:39 +0000
Subject: note 94096 added to book.mcrypt
Groups: php.notes 
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When using 3DES between PHP and C#, it is to be noted that there are subtle differences that if not strictly observed, will result in annoying problem encrypt/decrypt data. 1), When using a 16 bytes key, php and c# generates total different outcome string. it seems that a 24 bytes key is required for php and c# to work alike. 2), php doesnt have a "padding" option, while c# has 3 (?). My work around is to add nulls i.e. chr(0) to the end of the source string to make its size times of 8, while in c#, PaddingMode.Zeros is required. 3) the key size has to be times of 8, in php, to make it work for c#. you may also find this url helpful http://www.sanity-free.org/131/triple_des_between_php_and_csharp.html ---- Server IP: 222.73.227.205 Probable Submitter: 218.87.47.170 ---- Manual Page -- http://www.php.net/manual/en/book.mcrypt.php Edit -- https://master.php.net/note/edit/94096 Del: integrated -- https://master.php.net/note/delete/94096/integrated Del: useless -- https://master.php.net/note/delete/94096/useless Del: bad code -- https://master.php.net/note/delete/94096/bad+code Del: spam -- https://master.php.net/note/delete/94096/spam Del: non-english -- https://master.php.net/note/delete/94096/non-english Del: in docs -- https://master.php.net/note/delete/94096/in+docs Del: other reasons-- https://master.php.net/note/delete/94096 Reject -- https://master.php.net/note/reject/94096 Search -- https://master.php.net/manage/user-notes.php

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