phpday 2025 - Call For Papers

Hash 函数

目录

  • hash — 生成散列值(消息摘要)
  • hash_algos — 返回已注册的散列算法列表
  • hash_copy — 拷贝哈希运算上下文
  • hash_equals — 可防止时序攻击的字符串比较
  • hash_file — 给指定文件的内容生成散列值
  • hash_final — 结束增量散列且返回摘要结果
  • hash_hkdf — Generate a HKDF key derivation of a supplied key input
  • hash_hmac — 使用 HMAC 方法生成带有密钥的散列值
  • hash_hmac_algos — 返回适用于 hash_hmac 的已注册散列算法列表
  • hash_hmac_file — 使用 HMAC 方法和给定文件的内容生成带密钥的散列值
  • hash_init — 初始化增量散列运算上下文
  • hash_pbkdf2 — 生成所提供密码的 PBKDF2 密钥导出
  • hash_update — 向活跃的哈希运算上下文中填充数据
  • hash_update_file — 从文件向活跃的散列运算上下文中填充数据
  • hash_update_stream — 从打开的流向活跃的散列运算上下文中填充数据
添加备注

用户贡献的备注 4 notes

up
6
artem at it-nt dot ru
16 years ago
And some code for LM hash:

<?php
function LMhash($string)
{
$string = strtoupper(substr($string,0,14));

$p1 = LMhash_DESencrypt(substr($string, 0, 7));
$p2 = LMhash_DESencrypt(substr($string, 7, 7));

return
strtoupper($p1.$p2);
}

function
LMhash_DESencrypt($string)
{
$key = array();
$tmp = array();
$len = strlen($string);

for (
$i=0; $i<7; ++$i)
$tmp[] = $i < $len ? ord($string[$i]) : 0;

$key[] = $tmp[0] & 254;
$key[] = ($tmp[0] << 7) | ($tmp[1] >> 1);
$key[] = ($tmp[1] << 6) | ($tmp[2] >> 2);
$key[] = ($tmp[2] << 5) | ($tmp[3] >> 3);
$key[] = ($tmp[3] << 4) | ($tmp[4] >> 4);
$key[] = ($tmp[4] << 3) | ($tmp[5] >> 5);
$key[] = ($tmp[5] << 2) | ($tmp[6] >> 6);
$key[] = $tmp[6] << 1;

$is = mcrypt_get_iv_size(MCRYPT_DES, MCRYPT_MODE_ECB);
$iv = mcrypt_create_iv($is, MCRYPT_RAND);
$key0 = "";

foreach (
$key as $k)
$key0 .= chr($k);
$crypt = mcrypt_encrypt(MCRYPT_DES, $key0, "KGS!@#$%", MCRYPT_MODE_ECB, $iv);

return
bin2hex($crypt);
}
?>

Some optimization?
up
5
CraquePipe
16 years ago
For thoes of you who're looking to generate an NTLM hash (not an LM hash), I found out it's quite simple..

It uses the basic MD4 function, but the password needs to be in Unicode Little Endian encode first (this canbe achieved by the iconv function).

This can be done easily by using the following code:

<?php
function NTLMHash($Input) {
// Convert the password from UTF8 to UTF16 (little endian)
$Input=iconv('UTF-8','UTF-16LE',$Input);

// Encrypt it with the MD4 hash
$MD4Hash=bin2hex(mhash(MHASH_MD4,$Input));

// You could use this instead, but mhash works on PHP 4 and 5 or above
// The hash function only works on 5 or above
//$MD4Hash=hash('md4',$Input);

// Make it uppercase, not necessary, but it's common to do so with NTLM hashes
$NTLMHash=strtoupper($MD4Hash);

// Return the result
return($NTLMHash);
}
?>

To produce an LM hash requires a fully-written script containing the algorithm used to make it.

Enjoy,
CraquePipe.
up
-4
kungla at gmail dot com
15 years ago
For Samba ueserPassword you can use:

(I am not very sure aboute the salt part, but it works for me like that)

<?php
function CRYPThash($string, $salt = null)
{
if (!
$salt)
$salt = rand(10,99);

return
"{CRYPT}".crypt($string, $salt);
}
?>

In posted NTLMHash function you can also use:

<?php
// Encrypt it with the MD4 hash
$MD4Hash=hash('md4',$Input);
?>

So you don't need to install mhash libraries
up
-5
ocarter at mirabeau dot nl
14 years ago
Note for FreeBSD with PHP-5.

This is disabled by default; use the security/php5-hash port:
cd /usr/ports/security/php5-hash ; make install clean
(do not use the security/pecl-hash port as in the past, see the /usr/ports/UPDATING post from 20081211)
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