Data::Password::Manager - generate, check, manage crypt - des passwords
use Data::Password::Manager qw( pw_gen pw_valid pw_obscure pw_clean pw_get ); $password = pw_gen($cleartext); $ok = pw_valid($cleartxt,$password); $clean_text = pw_clean($dirty_text); ($code,$text) = $pw_obscure($newpass,$oldpass,$min_len); $passwd = pw_get($user,$passwd_file,\$error);
Generate a 13 character DES password string from clear text
input: string <= 128 characters output: password
Return true if clear text is password match
input: string <= 128 characters, password output: true on match, else false
Clean a text string to only include / . 0..9 a..z A..Z Useful for restricted password sets i.e. http applications Returns a string of 128 characters or less
Check for a usable password. Returns ok if there is no old password. i.e. any new password will do.
input: string <= 128 characters return (0, 'OK') if no old password or new is good return ( 1, 'too short' ) if length < $MIN_LEN (default 5) return ( 2, 'no change' ) if old eq new return ( 3, 'a palindrome' ) if new is a palindrome return ( 4, 'case change only' ) if old =~ /$new$/i return ( 5, 'to similar' ) see code return ( 6, 'to simple' ) if not a good character mix return ( 7, 'rotated' ) if new is rotated version of old return ( 8, 'flipped' ) if new is old flipped around
Check a password file for the presence of $user:$password.
input: $user return: $password
Returns undef on error and places a descriptive error message in the scalar $error. Since a valid password can be empty, the caller must check that the return value is defined, not just false.
FILE is of the form:
user1:DESpassword1 user2:DESpassword2 etc... # in-line comments are OK
pw_gen pw_valid pw_clean pw_obscure pw_get
Code for the subroutine to check for obscure passwords is based on and taken in part from a port to perl of the functions found in the shadow suite by Julianne Frances Haugh. Thank you for your contribution to public domain software Julianne.
Copyright 1989 - 1994, Julianne Frances Haugh All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of Julianne F. Haugh nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS `AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
RCSID("$Id: obscure.c,v 1.7 1998/04/16 19:57:44 marekm Exp $")
This version of obscure.c contains modifications to support "cracklib" by Alec Muffet (firstname.lastname@example.org).You must obtain the Cracklib library source code for this function to operate.
Copyright 2003 - 2006, Michael Robinton <email@example.com>
The non-(Julianne Haugh) portion of the program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Michael Robinton, BizSystems <firstname.lastname@example.org>