Doc #68501 [Nab]: mcrypt_decrypt need key with specific length
| From: | ogarbe at voyageprive dot com | Date: | Tue, 25 Nov 2014 22:05:22 +0000 |
| Subject: | Doc #68501 [Nab]: mcrypt_decrypt need key with specific length | ||
| References: | 1 | Groups: | php.doc.bugs |
| Request: | Send a blank email to doc-bugs+get-11702@lists.php.net to get a copy of this message | ||
Edit report at https://bugs.php.net/bug.php?id=68501&edit=1
ID: 68501
User updated by: ogarbe at voyageprive dot com
Reported by: ogarbe at voyageprive dot com
Summary: mcrypt_decrypt need key with specific length
Status: Not a bug
Type: Documentation Problem
Package: mcrypt related
Operating System: Debian
PHP Version: 5.6.3
Block user comment: N
Private report: N
New Comment:
Thanks for this quick answer and sorry for this.
In fact the French documentation is outdated and doesn't include this change.
http://php.net/manual/fr/function.mcrypt-decrypt.php
Previous Comments:
------------------------------------------------------------------------
[2014-11-25 21:58:54] aharvey@php.net
http://php.net/mcrypt_decrypt already notes that
requirement both in the parameter documentation and changelog, and the 5.6 migration guide also
includes this.
------------------------------------------------------------------------
[2014-11-25 21:40:46] ogarbe at voyageprive dot com
Description:
------------
mcrypt_decrypt / encrypt changed between 5.4 and 5.6
in 5.6, and contrary to the doc, the second parameter $key needs to be of sizes 16, 24 or 32
supported, the key should be padded with "\0" to match correct sizes.
Test script:
---------------
$decryptText = mcrypt_decrypt(
MCRYPT_RIJNDAEL_256,
'1234567890ABCDEFGHIJKLM',
$cryptText,
MCRYPT_MODE_CBC,
'aworkingvector'
);
Expected result:
----------------
Dont throw this error
mcrypt_encrypt(): Key of size 22 not supported by this algorithm. Only keys of sizes 16, 24 or 32
supported
Or fix the documentation
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=68501&edit=1