variant_xor
For those of you not familiar with the CrackLib Library:
CrackLib (or PHP Crack) can not cope with plaintext wordlists.
You have to generate a binary version of any plaintext list first.
After you have done this you get 3 files with different extensions:
my_list.txt
---->
my_list.pwd
my_list.hwm
my_list.pwi
crack_opendict() must be called with the first argument describing the path and base filename of the binary wordlist, e.g. C:\....\my_list or /usr/local/... (see below)
Now the bad news - how to generate the 3 files:
The only way i managed to do it:
o Download the CrackLib package from sourceforge (see link in php.net txt)
o USE UNIX/LINUX:
o run configure
o run make all
o run make install
o run make dict (having the wordlists in the /dict directory)
o look for the files in /usr/local/share/cracklib/
o copy the files in a convenient directory
That's it.
XVI. Crack Functions
Introduction
These functions allow you to use the CrackLib library to test the 'strength' of a password. The 'strength' of a password is tested by that checks length, use of upper and lower case and checked against the specified CrackLib dictionary. CrackLib will also give helpful diagnostic messages that will help 'strengthen' the password.
Note: This extension has been moved to the » PECL repository and is no longer bundled with PHP as of PHP 5.0.0.
Requirements
More information regarding CrackLib along with the library can be found at » http://sourceforge.net/projects/cracklib.
Installation
This » PECL extension is not bundled with PHP. Information for installing this PECL extension may be found in the manual chapter titled Installation of PECL extensions. Additional information such as new releases, downloads, source files, maintainer information, and a CHANGELOG, can be located here: » http://pecl.php.net/package/crack.
In PHP 4 this PECL extensions source can be found in the ext/ directory within the PHP source or at the PECL link above. In order to use these functions you must compile PHP with Crack support by using the --with-crack[=DIR] configuration option.
Windows users will enable php_crack.dll inside of php.ini in order to use these functions. In PHP 4 this DLL resides in the extensions/ directory within the PHP Windows binaries download. The DLL for this PECL extension may be downloaded from either the » PHP Downloads page or from » http://pecl4win.php.net/
Runtime Configuration
The behaviour of these functions is affected by settings in php.ini.
Table 38. Crack configuration options
| Name | Default | Changeable | Changelog |
|---|---|---|---|
| crack.default_dictionary | NULL | PHP_INI_PERDIR | Available since PHP 4.0.5. |
For further details and definitions of the PHP_INI_* constants, see the Appendix I, php.ini directives.
Resource Types
The CrackLib extension defines a dictionary resource identifier returned by crack_opendict().
Predefined Constants
This extension has no constants defined.
Examples
This example shows how to open a CrackLib dictionary, test a given password, retrieve any diagnostic messages, and close the dictionary.
Example 405. CrackLib example
<?php
// Open CrackLib Dictionary
$dictionary = crack_opendict('/usr/local/lib/pw_dict')
or die('Unable to open CrackLib dictionary');
// Perform password check
$check = crack_check($dictionary, 'gx9A2s0x');
// Retrieve messages
$diag = crack_getlastmessage();
echo $diag; // 'strong password'
// Close dictionary
crack_closedict($dictionary);
?>
Note: If crack_check() returns TRUE, crack_getlastmessage() will return 'strong password'.
Table of Contents
- crack_check — Performs an obscure check with the given password
- crack_closedict — Closes an open CrackLib dictionary
- crack_getlastmessage — Returns the message from the last obscure check
- crack_opendict — Opens a new CrackLib dictionary
add a note
User Contributed NotesCrack Functions
Martin
05-Jun-2007 04:08
05-Jun-2007 04:08