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<?php
/*
* Transparent SHA-256 Implementation for PHP 4 and PHP 5
*
* Author: Perry McGee (pmcgee@nanolink.ca)
* Website: http://www.nanolink.ca/pub/sha256
*
* Copyright (C) 2006,2007,2008,2009 Nanolink Solutions
*
* Created: Feb 11, 2006
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
* or see <http://www.gnu.org/licenses/>.
*
* Include:
*
* require_once("[path/]sha256.inc.php");
*
* Usage Options:
*
* 1) $shaStr = hash('sha256', $string_to_hash);
*
* 2) $shaStr = sha256($string_to_hash[, bool ignore_php5_hash = false]);
*
* 3) $obj = new nanoSha2([bool $upper_case_output = false]);
* $shaStr = $obj->hash($string_to_hash[, bool $ignore_php5_hash = false]);
*
* Reference: http://csrc.nist.gov/groups/ST/toolkit/secure_hashing.html
*
* 2007-12-13: Cleaned up for initial public release
* 2008-05-10: Moved all helper functions into a class. API access unchanged.
* 2009-06-23: Created abstraction of hash() routine
* 2009-07-23: Added detection of 32 vs 64bit platform, and patches.
* Ability to define "_NANO_SHA2_UPPER" to yeild upper case hashes.
* 2009-08-01: Added ability to attempt to use mhash() prior to running pure
* php code.
*
* 2010-06-10: Added support for 16bytes char and utf8 in string
*
* NOTE: Some sporadic versions of PHP do not handle integer overflows the
* same as the majority of builds. If you get hash results of:
* 7fffffff7fffffff7fffffff7fffffff7fffffff7fffffff7fffffff7fffffff
*
* If you do not have permissions to change PHP versions (if you did
* you'd probably upgrade to PHP 5 anyway) it is advised you install a
* module that will allow you to use their hashing routines, examples are:
* - mhash module : http://ca3.php.net/mhash
* - Suhosin : http://www.hardened-php.net/suhosin/
*
* If you install the Suhosin module, this script will transparently
* use their routine and define the PHP routine as _nano_sha256().
*
* If the mhash module is present, and $ignore_php5_hash = false the
* script will attempt to use the output from mhash prior to running
* the PHP code.
*/
if (!class_exists('nanoSha2'))
{
class nanoSha2
{
// php 4 - 5 compatable class properties
var $toUpper;
var $platform;
var $bytesString = 16;
// Php 4 - 6 compatable constructor
function nanoSha2($toUpper = false) {
// Determine if the caller wants upper case or not.
$this->toUpper = is_bool($toUpper)
? $toUpper
: ((defined('_NANO_SHA2_UPPER')) ? true : false);
// Deteremine if the system is 32 or 64 bit.
$tmpInt = (int)4294967295;
$this->platform = ($tmpInt > 0) ? 64 : 32;
}
// Here are the bitwise and functions as defined in FIPS180-2 Standard
function addmod2n($x, $y, $n = 4294967296) // Z = (X + Y) mod 2^32
{
$mask = 0x80000000;
if ($x < 0) {
$x &= 0x7FFFFFFF;
$x = (float)$x + $mask;
}
if ($y < 0) {
$y &= 0x7FFFFFFF;
$y = (float)$y + $mask;
}
$r = $x + $y;
if ($r >= $n) {
while ($r >= $n) {
$r -= $n;
}
}
return (int)$r;
}
// Logical bitwise right shift (PHP default is arithmetic shift)
function SHR($x, $n) // x >> n
{
if ($n >= 32) { // impose some limits to keep it 32-bit
return (int)0;
}
if ($n <= 0) {
return (int)$x;
}
$mask = 0x40000000;
if ($x < 0) {
$x &= 0x7FFFFFFF;
$mask = $mask >> ($n-1);
return ($x >> $n) | $mask;
}
return (int)$x >> (int)$n;
}
function ROTR($x, $n) { return (int)(($this->SHR($x, $n) | ($x << (32-$n)) & 0xFFFFFFFF)); }
function Ch($x, $y, $z) { return ($x & $y) ^ ((~$x) & $z); }
function Maj($x, $y, $z) { return ($x & $y) ^ ($x & $z) ^ ($y & $z); }
function Sigma0($x) { return (int) ($this->ROTR($x, 2)^$this->ROTR($x, 13)^$this->ROTR($x, 22)); }
function Sigma1($x) { return (int) ($this->ROTR($x, 6)^$this->ROTR($x, 11)^$this->ROTR($x, 25)); }
function sigma_0($x) { return (int) ($this->ROTR($x, 7)^$this->ROTR($x, 18)^$this->SHR($x, 3)); }
function sigma_1($x) { return (int) ($this->ROTR($x, 17)^$this->ROTR($x, 19)^$this->SHR($x, 10)); }
function string2ordUTF8($s,&$byteSize){
$chars = array();
// par defaut sur 8bits
$byteSize = 8;
$i = 0;
while ($i<strlen($s)){
$chars[] = $this->ordUTF8($s, $i, $bytes);
$i+=$bytes;
// mais si un char necessite 16bits, on passe tout sur 16
// sinon on ne concorde pas avec le lecture de la chaine en js
// et le sha256 js
if ($bytes>1) $byteSize = 16;
}
return $chars;
}
function ordUTF8($c, $index = 0, &$bytes)
{
$len = strlen($c);
$bytes = 0;
if ($index >= $len)
return false;
$h = ord($c[$index]);
if ($h <= 0x7F) {
$bytes = 1;
return $h;
}
else if ($h < 0xC2){
// pas utf mais renvoyer quand meme ce qu'on a
$bytes = 1;
return $h;
}
else if ($h <= 0xDF && $index < $len - 1) {
$bytes = 2;
return ($h & 0x1F) << 6 | (ord($c[$index + 1]) & 0x3F);
}
else if ($h <= 0xEF && $index < $len - 2) {
$bytes = 3;
return ($h & 0x0F) << 12 | (ord($c[$index + 1]) & 0x3F) << 6
| (ord($c[$index + 2]) & 0x3F);
}
else if ($h <= 0xF4 && $index < $len - 3) {
$bytes = 4;
return ($h & 0x0F) << 18 | (ord($c[$index + 1]) & 0x3F) << 12
| (ord($c[$index + 2]) & 0x3F) << 6
| (ord($c[$index + 3]) & 0x3F);
}
else {
// pas utf mais renvoyer quand meme ce qu'on a
$bytes = 1;
return $h;
}
}
function string2binint ($str,$npad=512) {
$bin = array();
$ords = $this->string2ordUTF8($str,$this->bytesString);
$npad = $npad/$this->bytesString;
$length = count($ords);
$ords[] = 0x80; // append the "1" bit followed by 7 0's
$pad = ceil(($length+1+32/$this->bytesString)/$npad)*$npad-32/$this->bytesString;
$ords = array_pad($ords,$pad,0);
$mask = (1 << $this->bytesString) - 1;
for($i = 0; $i < count($ords) * $this->bytesString; $i += $this->bytesString) {
if (!isset($bin[$i>>5])) { $bin[$i>>5] = 0; } // pour eviter des notices.
$bin[$i>>5] |= ($ords[$i / $this->bytesString] & $mask) << (24 - $i%32);
}
$bin[] = $length*$this->bytesString;
return $bin;
}
function array_split($a, $n) {
$split = array();
while (count($a)>$n) {
$s = array();
for($i = 0;$i<$n;$i++)
$s[] = array_shift($a);
$split[] = $s;
}
if (count($a)){
$a = array_pad($a,$n,0);
$split[] = $a;
}
return $split;
}
/**
* Process and return the hash.
*
* @param $str Input string to hash
* @param $ig_func Option param to ignore checking for php > 5.1.2
* @return string Hexadecimal representation of the message digest
*/
function hash($str, $ig_func = true)
{
unset($binStr); // binary representation of input string
unset($hexStr); // 256-bit message digest in readable hex format
// check for php's internal sha256 function, ignore if ig_func==true
if ($ig_func == false) {
if (version_compare(PHP_VERSION,'5.1.2','>=') AND !defined('_NO_HASH_DEFINED')) {
return hash("sha256", $str, false);
} else if (function_exists('mhash') && defined('MHASH_SHA256')) {
return base64_encode(bin2hex(mhash(MHASH_SHA256, $str)));
}
}
/*
* SHA-256 Constants
* Sequence of sixty-four constant 32-bit words representing the
* first thirty-two bits of the fractional parts of the cube roots
* of the first sixtyfour prime numbers.
*/
$K = array((int)0x428a2f98, (int)0x71374491, (int)0xb5c0fbcf,
(int)0xe9b5dba5, (int)0x3956c25b, (int)0x59f111f1,
(int)0x923f82a4, (int)0xab1c5ed5, (int)0xd807aa98,
(int)0x12835b01, (int)0x243185be, (int)0x550c7dc3,
(int)0x72be5d74, (int)0x80deb1fe, (int)0x9bdc06a7,
(int)0xc19bf174, (int)0xe49b69c1, (int)0xefbe4786,
(int)0x0fc19dc6, (int)0x240ca1cc, (int)0x2de92c6f,
(int)0x4a7484aa, (int)0x5cb0a9dc, (int)0x76f988da,
(int)0x983e5152, (int)0xa831c66d, (int)0xb00327c8,
(int)0xbf597fc7, (int)0xc6e00bf3, (int)0xd5a79147,
(int)0x06ca6351, (int)0x14292967, (int)0x27b70a85,
(int)0x2e1b2138, (int)0x4d2c6dfc, (int)0x53380d13,
(int)0x650a7354, (int)0x766a0abb, (int)0x81c2c92e,
(int)0x92722c85, (int)0xa2bfe8a1, (int)0xa81a664b,
(int)0xc24b8b70, (int)0xc76c51a3, (int)0xd192e819,
(int)0xd6990624, (int)0xf40e3585, (int)0x106aa070,
(int)0x19a4c116, (int)0x1e376c08, (int)0x2748774c,
(int)0x34b0bcb5, (int)0x391c0cb3, (int)0x4ed8aa4a,
(int)0x5b9cca4f, (int)0x682e6ff3, (int)0x748f82ee,
(int)0x78a5636f, (int)0x84c87814, (int)0x8cc70208,
(int)0x90befffa, (int)0xa4506ceb, (int)0xbef9a3f7,
(int)0xc67178f2);
// Pre-processing: Padding the string
$binStr = $this->string2binint($str,512);
// Parsing the Padded Message (Break into N 512-bit blocks)
$M = $this->array_split($binStr, 16);
// Set the initial hash values
$h[0] = (int)0x6a09e667;
$h[1] = (int)0xbb67ae85;
$h[2] = (int)0x3c6ef372;
$h[3] = (int)0xa54ff53a;
$h[4] = (int)0x510e527f;
$h[5] = (int)0x9b05688c;
$h[6] = (int)0x1f83d9ab;
$h[7] = (int)0x5be0cd19;
// loop through message blocks and compute hash. ( For i=1 to N : )
$N = count($M);
for ($i = 0; $i < $N; $i++)
{
// Break input block into 16 32bit words (message schedule prep)
$MI = $M[$i];
// Initialize working variables
$_a = (int)$h[0];
$_b = (int)$h[1];
$_c = (int)$h[2];
$_d = (int)$h[3];
$_e = (int)$h[4];
$_f = (int)$h[5];
$_g = (int)$h[6];
$_h = (int)$h[7];
unset($_s0);
unset($_s1);
unset($_T1);
unset($_T2);
$W = array();
// Compute the hash and update
for ($t = 0; $t < 16; $t++)
{
// Prepare the first 16 message schedule values as we loop
$W[$t] = $MI[$t];
// Compute hash
$_T1 = $this->addmod2n($this->addmod2n($this->addmod2n($this->addmod2n($_h, $this->Sigma1($_e)), $this->Ch($_e, $_f, $_g)), $K[$t]), $W[$t]);
$_T2 = $this->addmod2n($this->Sigma0($_a), $this->Maj($_a, $_b, $_c));
// Update working variables
$_h = $_g; $_g = $_f; $_f = $_e; $_e = $this->addmod2n($_d, $_T1);
$_d = $_c; $_c = $_b; $_b = $_a; $_a = $this->addmod2n($_T1, $_T2);
}
for (; $t < 64; $t++)
{
// Continue building the message schedule as we loop
$_s0 = $W[($t+1)&0x0F];
$_s0 = $this->sigma_0($_s0);
$_s1 = $W[($t+14)&0x0F];
$_s1 = $this->sigma_1($_s1);
$W[$t&0xF] = $this->addmod2n($this->addmod2n($this->addmod2n($W[$t&0xF], $_s0), $_s1), $W[($t+9)&0x0F]);
// Compute hash
$_T1 = $this->addmod2n($this->addmod2n($this->addmod2n($this->addmod2n($_h, $this->Sigma1($_e)), $this->Ch($_e, $_f, $_g)), $K[$t]), $W[$t&0xF]);
$_T2 = $this->addmod2n($this->Sigma0($_a), $this->Maj($_a, $_b, $_c));
// Update working variables
$_h = $_g; $_g = $_f; $_f = $_e; $_e = $this->addmod2n($_d, $_T1);
$_d = $_c; $_c = $_b; $_b = $_a; $_a = $this->addmod2n($_T1, $_T2);
}
$h[0] = $this->addmod2n($h[0], $_a);
$h[1] = $this->addmod2n($h[1], $_b);
$h[2] = $this->addmod2n($h[2], $_c);
$h[3] = $this->addmod2n($h[3], $_d);
$h[4] = $this->addmod2n($h[4], $_e);
$h[5] = $this->addmod2n($h[5], $_f);
$h[6] = $this->addmod2n($h[6], $_g);
$h[7] = $this->addmod2n($h[7], $_h);
}
// Convert the 32-bit words into human readable hexadecimal format.
$hexStr = sprintf("%08x%08x%08x%08x%08x%08x%08x%08x", $h[0], $h[1], $h[2], $h[3], $h[4], $h[5], $h[6], $h[7]);
return ($this->toUpper) ? strtoupper($hexStr) : $hexStr;
}
}
}
if (!function_exists('str_split'))
{
/**
* Splits a string into an array of strings with specified length.
* Compatability with older verions of PHP
*/
function str_split($string, $split_length = 1)
{
$result = array();
$sign = ($split_length < 0) ? -1 : 1;
$strlen = strlen($string);
$split_length = abs($split_length);
if (($split_length == 0) || ($strlen == 0)) {
$result = false;
} elseif ($split_length >= $strlen) {
$result[] = $string;
} else {
$length = $split_length;
for ($i = 0; $i < $strlen; $i++)
{
$i = (($sign < 0) ? $i + $length : $i);
$result[] = substr($string, $sign*$i, $length);
$i--;
$i = (($sign < 0) ? $i : $i + $length);
$length = (($i + $split_length) > $strlen)
? ($strlen - ($i + 1))
: $split_length;
}
}
return $result;
}
}
/**
* Main routine called from an application using this include.
*
* General usage:
* require_once('sha256.inc.php');
* $hashstr = sha256('abc');
*
* Note:
* PHP Strings are limitd to (2^31)-1, so it is not worth it to
* check for input strings > 2^64 as the FIPS180-2 defines.
*/
function _nano_sha256($str, $ig_func = true) {
$obj = new nanoSha2((defined('_NANO_SHA2_UPPER')) ? true : false);
return $obj->hash($str, $ig_func);
}
// 2009-07-23: Added check for function as the Suhosin plugin adds this routine.
if (!function_exists('sha256')) {
function sha256($str, $ig_func = true) { return _nano_sha256($str, $ig_func); }
}
// support to give php4 the hash() routine which abstracts this code.
if (!function_exists('hash'))
{
define('_NO_HASH_DEFINED',true);
function hash($algo, $data)
{
if (empty($algo) || !is_string($algo) || !is_string($data)) {
return false;
}
if (function_exists($algo)) {
return $algo($data);
}
}
}
?>
| .. | |||||
| images | |||||
| php53 | |||||
| php56 | |||||
| php71 | |||||
| php81 | |||||
| php82 | |||||
| .htaccess | |||||
| chmod.php | |||||
| cles.php | |||||
| clone.php | |||||
| connect.php | |||||
| edit.php | |||||
| edit.xml | |||||
| fileindex.php | |||||
| import.php | |||||
| info.xml | |||||
| install.js | |||||
| install.php | |||||
| install.xml | |||||
| keys.php | |||||
| md5 | |||||
| notes.txt | |||||
| sha256.inc.php | |||||
| upgrade.php | |||||
| upgrade.xml |