ID: 14606
User updated by: [EMAIL PROTECTED]
Reported By: [EMAIL PROTECTED]
Status: Closed
Bug Type: mcrypt related
Operating System: redhat 7.2
PHP Version: 4.1.0
New Comment:

I first thought of a problem with libmcrypt itself...
According to its author, 3DES has not changed (see below).
I'll probably have to decrypt my data with php-4.0.6-libmcrypt-2.2.7 and re-encrypt it 
with php-4.0.6-libmcrypt-2.4.18... Grrreat  :-)

----- Original Message ----- 
From: "Nikos Mavroyanopoulos" <[EMAIL PROTECTED]>
To: "Jean-Francois LE CAM" <[EMAIL PROTECTED]>
Sent: Wednesday, December 19, 2001 6:16 PM
Subject: Re: libmcrypt question (help!)


> On Wed, 19 Dec 2001 18:19:51 +0100 "Jean-Francois LE CAM" 
><[EMAIL PROTECTED]> wrote:
> 
> > Hi Nikos,
> > I have been using libmcrypt for quite a long time now together with php.
> > My running conf is php-4.0.6 / libmcrypt-2.2.7
> > Trying to install php-4.1.0, I was said to upgrade to libmcrypt-2.4 (because
> > of a bug that will be fixed in php-4.1.1).
> > Is it possible that the TripleDES decryption does not give the same result
> > under libmcrypt-2.2.7 and libmcrypt-2.4.18 ?
> > That is what I suspect, and it would be rather baaaad for me since I have a
> > database containing data encrypted with 2.2.7 that I now wish to use with
> > 2.4.18.
> 
> No 3DES has not changed at all. But you may want to play with the
> mcrypt functions in php (to get them used in a compatible way).
> I do not know more, you'd better ask in a php group or something.


Previous Comments:
------------------------------------------------------------------------

[2001-12-19 14:26:17] [EMAIL PROTECTED]

It is possible a problem in libmcrypt itself . A lot has changed in there that my have 
broke backwrd compability. It's not a PHP bug, because nothing has changed regarding 
to this between php 4.0.6 and 4.1.0. I'm closing this one.

Derick

------------------------------------------------------------------------

[2001-12-19 12:33:01] [EMAIL PROTECTED]

Using exactly the same input data, the following lines won't return the same 
decryption result :

php-4.0.6 / libmcrypt-2.2.7 :

mcrypt_ofb("MCRYPT_TripleDES",$realkey,$ct,MCRYPT_DECRYPT,$iv);

php-4.1.0 / libmcrypt-2.4.18 :

mcrypt_ofb(MCRYPT_TripleDES, $realkey, $ct, MCRYPT_DECRYPT, $iv);

I have data encrypted with libmcrypt-2.2.7 that I want to use with libmcrypt-2.4.18, 
but I can not !!!

Thanks in adance,

JF

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Edit this bug report at http://bugs.php.net/?id=14606&edit=1


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