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Arctic Code 2013-01-26 14:58:20 -08:00
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<?php
/* HashPass() function takes $plaintext, $salt and $i (number of iterations) as inputs and outputs $hashpass - $salt and $i are optional
* Copyright David Todd (C) 2012
* http://www.unps-gama.info
* This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
* To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/
* If no $salt provided, generate large int and output $hashpass and $salt
* If no $i (number of iterations) provided, go through once and return - not as secure as using iterations, but chances are low it will get cracked easily
* If no $plaintext provided, die with error message saved to error variable
*/
function hashpass($plaintext, $salt, $i){
if($plaintext == null) die("No password detected"); // Append error into common error string for parsing later
$plaintext = hash("sha1", $plaintext); // First step - get plaintext sha1
if($salt == null || $salt == ''){
$salt = mt_rand(10000, 20000); // Generate random number between 1000 and 20000
$salt = hash("sha1", $salt); // Get sha1 hash of random number
$salt = $salt.mt_rand(5000, 80000); // Append new random number between 5000 and 80000 to md5 salt
$salt = hash("sha256", $salt); // Take a sha256 hash of new salt and done with salt generation
}
if($i ==null || $i == ''){
$plaintext = hash("sha256", $plaintext.$salt); // Take first sha256 hash of $plaintext+$salt (64 bits)
$plaintext = hash("sha1", $salt.$plaintext.$salt); // Take sha1 of salt+plaintext+salt (32 bits)
$plaintext = hash("sha512", $salt.$plaintext.$salt.$salt.$plaintext.$salt); // Take sha512 of this (128bits)
$hashpass = hash("sha256", $plaintext); // final hash is sha256 of the sha512 above (back down to 64bits)
return $hashpass."/".$salt; // Give calling script the hashed password and salt, seperate strings with "/" to be exploded into array later
}else{
$il = '';
while($il < $i){
$plaintext = hash("sha256", $plaintext.$salt); // Take first sha256 hash of $plaintext+$salt (64 bits)
$plaintext = hash("sha1", $salt.$plaintext.$salt); // Take sha1 of salt+plaintext+salt (32 bits)
$plaintext = hash("sha512", $salt.$plaintext.$salt.$salt.$plaintext.$salt); // Take sha512 of this (128bits)
$il++;
//echo "Iteration: $il Password: $plaintext\r\n"; - This line is uncommented in the demo
}
$hashpass = hash("sha256", $plaintext); // final hash is sha256 of the sha512 above (back down to 64bits)
return $hashpass."/".$salt; // Give calling script the hashed password and salt, seperate strings with "/" to be exploded into array later
}
}
?>