Last updated: Sat, 17 Jul 2004

XI. Crack Functions

소개

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.

참고: 이 확장 모듈은 PHP 5에서 제거되어, PECL로 이동되었습니다.

요구 사항

More information regarding CrackLib along with the library can be found at http://www.crypticide.org/users/alecm/.

설치

In order to use these functions, you must compile PHP with Crack support by using the --with-crack[=DIR] option.

런타임 설정

이 함수의 작동은 php.ini 설정에 영향을 받습니다.

표 1. Crack configuration options

Name	Default	Changeable
crack.default_dictionary	NULL	PHP_INI_SYSTEM

For further details and definition of the PHP_INI_* constants see ini_set().

리소스 종류

이 확장 모듈은 리소스형을 정의하지 않습니다.

상수 정의

이 확장 모듈은 상수를 정의하지 않습니다.

예제

This example shows how to open a CrackLib dictionary, test a given password, retrieve any diagnostic messages, and close the dictionary.

예 1. 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);

?>

참고: If crack_check() returns TRUE, crack_getlastmessage() will return 'strong password'.

차례
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 Notes
Crack Functions

Martin
05-Jun-2007 09:08


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.

add a note

crack_check

cpdf_translate

Last updated: Sat, 17 Jul 2004