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40 lines
2.5 KiB
PHP
40 lines
2.5 KiB
PHP
<?php
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/* HashPass() function takes $plaintext, $salt and $i (number of iterations) as inputs and outputs $hashpass - $salt and $i are optional
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* Copyright David Todd (C) 2012
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* http://www.unps-gama.info
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* This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
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* To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/
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* If no $salt provided, generate large int and output $hashpass and $salt
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* 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
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* If no $plaintext provided, die with error message saved to error variable
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*/
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function hashpass($plaintext, $salt, $i){
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if($plaintext == null) die("No password given"); // Die with error
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$plaintext = hash("sha1", $plaintext); // First step - get plaintext sha1
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if($salt == null || $salt == ''){
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$salt = mt_rand(10000, 20000); // Generate random number between 1000 and 20000
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$salt = hash("sha1", $salt); // Get sha1 hash of random number
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$salt = $salt.mt_rand(5000, 80000); // Append new random number between 5000 and 80000 to md5 salt
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$salt = hash("sha256", $salt); // Take a sha256 hash of new salt and done with salt generation
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}
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if($i == null || $i == ''){
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$plaintext = hash("sha256", $plaintext.$salt); // Take first sha256 hash of $plaintext+$salt (64 bits)
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$plaintext = hash("sha1", $salt.$plaintext.$salt); // Take sha1 of salt+plaintext+salt (32 bits)
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$plaintext = hash("sha512", $salt.$plaintext.$salt.$salt.$plaintext.$salt); // Take sha512 of this (128bits)
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$hashpass = hash("sha256", $plaintext); // final hash is sha256 of the sha512 above (back down to 64bits)
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return $hashpass."/".$salt; // Give calling script the hashed password and salt, seperate strings with "/" to be exploded into array later
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}else{
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$il = '';
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while($il < $i && $il <= 50){
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$plaintext = hash("sha256", $plaintext.$salt); // Take first sha256 hash of $plaintext+$salt (64 bits)
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$plaintext = hash("sha1", $salt.$plaintext.$salt); // Take sha1 of salt+plaintext+salt (32 bits)
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$plaintext = hash("sha512", $salt.$plaintext.$salt.$salt.$plaintext.$salt); // Take sha512 of this (128bits)
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$il++;
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//echo "Iteration: $il Password: $plaintext\r\n";
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}
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$hashpass = hash("sha256", $plaintext); // final hash is sha256 of the sha512 above (back down to 64bits)
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return $hashpass."/".$salt; // Give calling script the hashed password and salt, seperate strings with "/" to be exploded into array later
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}
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}
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?>
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