Hash Funções

Índice

hash_algos — Return a list of registered hashing algorithms
hash_copy — Copy hashing context
hash_file — Generate a hash value using the contents of a given file
hash_final — Finalize an incremental hash and return resulting digest
hash_hmac_file — Generate a keyed hash value using the HMAC method and the contents of a given file
hash_hmac — Generate a keyed hash value using the HMAC method
hash_init — Initialize an incremental hashing context
hash_update_file — Pump data into an active hashing context from a file
hash_update_stream — Pump data into an active hashing context from an open stream
hash_update — Pump data into an active hashing context
hash — Generate a hash value (message digest)

hash_algos

Hash

Last updated: Fri, 28 Nov 2008

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Hash Funções

artem at it-nt dot ru
20-Jul-2008 07:35


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?

CraquePipe
25-Mar-2008 12:42


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.

martin
27-Sep-2007 07:28


I tried to use Hash() function on my PHP 5.2.3 (FreeBSD 6.2) but there was no Hash() function. (it should be available by default from version 5.1.2)



Hash() function was working after installing "security/pecl-hash" port.

nb_removethis_ at wtal dot de
04-Sep-2007 12:24


Some tests with mhash and hash revealed on my machine that hash needs more than twice as long to create a hash than mhash. The average of one million cylces of Haval128, Haval256, Gost, CRC32, MD5, SHA1 and SHA256 was 450ms for mhash and 1150ms for hash.

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hash_algos

Hash

Last updated: Fri, 28 Nov 2008