php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login
Bug #29755 Functions mcrypt don't work OK?
Submitted: 2004-08-19 13:40 UTC Modified: 2004-08-19 13:44 UTC
From: asoft at asoft dot no-ip dot org Assigned:
Status: Not a bug Package: mcrypt related
PHP Version: 5.0.1 OS: Windows XP
Private report: No CVE-ID: None
View Add Comment Developer Edit
Anyone can comment on a bug. Have a simpler test case? Does it work for you on a different platform? Let us know!
Just going to say 'Me too!'? Don't clutter the database with that please !
Your email address:
MUST BE VALID
Solve the problem:
19 + 40 = ?
Subscribe to this entry?

 
 [2004-08-19 13:40 UTC] asoft at asoft dot no-ip dot org
Description:
------------
$a="hola";
$b=cry($a,'sdglmsdd');
$c=dcry($b,'sdglmsdd')

result: $c!=$a

Correct result: $c==$a

Code until now working in version 4 of php

The function cry work how before. Seem work OK.
The function dcry FAIL. Don't work how before.

Reproduce code:
---------------
	function cry($input,$key)
		{$input = str_replace("\n","",$input);
	    	$input = str_replace("\t","",$input);
	    	$input = str_replace("\r","",$input);
	    	$key = substr(md5($key),0,24);
	    	$td = mcrypt_module_open ('tripledes', '', 'ecb', '');
	    	$iv = mcrypt_create_iv (mcrypt_enc_get_iv_size ($td), MCRYPT_RAND);
	    	mcrypt_generic_init ($td, $key, $iv);
	    	$encrypted_data = mcrypt_generic ($td, $input);
	    	mcrypt_module_close ($td);
	    	return trim(chop(base64_encode($encrypted_data)));}
	function dcry($input,$key)
		{$input = str_replace("\n","",$input);
		$input = str_replace("\t","",$input);
		$input = str_replace("\r","",$input);
		$input = trim(chop(base64_decode($input)));
		$td = mcrypt_module_open ('tripledes', '', 'ecb', '');
		$key = substr(md5($key),0,24);
		$iv = mcrypt_create_iv (mcrypt_enc_get_iv_size ($td), MCRYPT_RAND);
		mcrypt_generic_init ($td, $key, $iv);
		$decrypted_data = mdecrypt_generic ($td, $input);
		mcrypt_module_close ($td);		
		return trim(chop($decrypted_data));}


Patches

Add a Patch

Pull Requests

Add a Pull Request

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2004-08-19 13:44 UTC] derick@php.net
Sorry, but your problem does not imply a bug in PHP itself.  For a
list of more appropriate places to ask for help using PHP, please
visit http://www.php.net/support.php as this bug system is not the
appropriate forum for asking support questions. 

Thank you for your interest in PHP.

Your code is wrong, you\'re recreating the IV for decryption.
 
PHP Copyright © 2001-2021 The PHP Group
All rights reserved.
Last updated: Sat Jul 24 22:01:23 2021 UTC