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- if padding is disabled and the length of the text-to-be-encrypted isn't a multiple of the block size, padding will be automatically enabled

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git-svn-id: http://phpseclib.svn.sourceforge.net/svnroot/phpseclib/trunk@19 21d32557-59b3-4da0-833f-c5933fad653e
This commit is contained in:
Jim Wigginton 2008-08-04 17:59:12 +00:00
parent 69c639d845
commit a78d7df660
2 changed files with 18 additions and 4 deletions
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11
phpseclib/Crypt/DES.php
View File

@ -53,7 +53,7 @@
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMVII Jim Wigginton
* @license http://www.gnu.org/licenses/lgpl.txt
* @version $Id: DES.php,v 1.4 2008-03-31 00:49:09 terrafrost Exp $
* @version $Id: DES.php,v 1.5 2008-08-04 17:59:12 terrafrost Exp $
* @link http://phpseclib.sourceforge.net
*/
@ -496,13 +496,20 @@ class Crypt_DES {
* Pads a string using the RSA PKCS padding standards so that its length is a multiple of the blocksize (8).
* 8 - (strlen($text) & 7) bytes are added, each of which is equal to chr(8 - (strlen($text) & 7)
*
* If padding is disabled and $text is not a multiple of the blocksize, the string will be padded regardless
* and padding will, hence forth, be enabled.
*
* @see Crypt_DES::_unpad()
* @access private
*/
function _pad($text)
{
if (!$this->padding) {
return $text;
if (strlen($text) & 7 == 0) {
return $text;
} else {
$this->padding = true;
}
}
$length = 8 - (strlen($text) & 7);

11
phpseclib/Crypt/TripleDES.php
View File

@ -47,7 +47,7 @@
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMVII Jim Wigginton
* @license http://www.gnu.org/licenses/lgpl.txt
* @version $Id: TripleDES.php,v 1.3 2007-07-25 21:56:14 terrafrost Exp $
* @version $Id: TripleDES.php,v 1.4 2008-08-04 17:59:12 terrafrost Exp $
* @link http://phpseclib.sourceforge.net
*/
@ -552,13 +552,20 @@ class Crypt_TripleDES {
* Pads a string using the RSA PKCS padding standards so that its length is a multiple of the blocksize (8).
* 8 - (strlen($text) & 7) bytes are added, each of which is equal to chr(8 - (strlen($text) & 7)
*
* If padding is disabled and $text is not a multiple of the blocksize, the string will be padded regardless
* and padding will, hence forth, be enabled.
*
* @see Crypt_TripleDES::_unpad()
* @access private
*/
function _pad($text)
{
if (!$this->padding) {
return $text;
if (strlen($text) & 7 == 0) {
return $text;
} else {
$this->padding = true;
}
}
$length = 8 - (strlen($text) & 7);