<?php
##Dual Mode Password Creation System
## by
## David Hamilton
##Visit www.potentialcreations.com for more information
##This function provided without any warrenty expressed or implied.
##Designed as a learning tool only. Not intended for any
#particular use.
function pass_gen($min, $max,$filename,$type=1){
#Seeding the random number generator
#Required by some older versions of PHP
srand((float) microtime() * 1000000);
#open a text file with one word per line, number of words is arbitray
#PHP is quick, I use a 1200+ word file as a test and the script still
#executes in less than .005 seconds
$fd=fopen($filename,"r") or die("Error accessing data file");
$fstring=fread($fd,filesize($filename));
$spice=array("0","1","2","3","4","5","6","8","9","#","&","@","$","_","%","?","+");
#################################################
############BIG WARNING#########################
#$wordl_list is an explode on n the Windows newline character,
#if your word file was made on another OS change the explode
#character to the proper on for your OS
$length=rand($min,$max);
$word_list=explode("n",$fstring);
$list_size=sizeof($word_list);
$spice_size=sizeof($spice);
if ($type==1)
{
do
{
#Some word lists are "noisy"
#and have spaces at the end of the words
#So we trim em, and pick 2 random words.
$a=trim($word_list[rand(0,$list_size)]);
$b=trim($word_list[rand(0,$list_size)]);
#Also, we must pick a spice character.
$c=$spice[rand(0,$spice_size)];
#Now for the fun part. We flip a coin to
#see which word will get uppercased
$upper=rand(1,2);
if ($upper==1)
{
$a=strtoupper($a);
}
if ($upper==2)
{
$b=strtoupper($b);
}
##One last bit of chaos..
$dice=rand(1,3);
if ($dice==1)
{
$pass=$c.$a.$spice[rand(0,$spice_size)].$b;
}
if ($dice==2)
{
$pass=$a.$c.$b;
}
if ($dice==3)
{
$pass=$a.$c.$b.$spice[rand(0,$spice_size)];
}
while (strlen($pass)<$min)
{
$pass.=$spice[rand(0,$spice_size)];
}
}while (strlen($pass)<$min || strlen($pass)>$max);
#We have a range of acceptable lengths, so if it falls out
#of bounds we have to loop over.
return $pass;
}
##This is the type setting for giberish passwords
if ($type==2)
{
#This is a modified version of a tecnique other
#password generation programs have used.
#Using array_merge to get a nice big set of letters and numbers.
$deck = array_merge
(
range("0", "9"),
range("a", "z"),
range("A", "Z"),
array("0","1","2","3","4","5","6","8","9","#","&","@","$","_","%","?","+")
);
#this do loop glues together discrete elements of the array ($deck)
#and merges them into a passowrd
do{
for($i = 0; $i < $length; $i++)
{
$shuffle=rand(0,sizeof($deck));
$pass.=$deck[$shuffle];
}
}
#This is where we check to make sure the generated password
#Does not match one in our "no-no" list.
while(array_search($pass,$word_list));
#once done, we just return the password.
return $pass;
}
}
?>
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