neden MD5 çarpışma başarısız oldu?

3 Cevap php

Iki veri blokları this site vardır, ancak çarpışma üretmek için başarısız oldu:

var_dump(md5('d131dd02c5e6eec4693d9a0698aff95c2fcab58712467eab4004583eb8fb7f8955ad340609f4b30283e488832571415a085125e8f7cdc99fd91dbdf280373c5bd8823e3156348f5bae6dacd436c919c6dd53e2b487da03fd02396306d248cda0e99f33420f577ee8ce54b67080a80d1ec69821bcb6a8839396f9652b6ff72a70') == md5('d131dd02c5e6eec4693d9a0698aff95c2fcab50712467eab4004583eb8fb7f8955ad340609f4b30283e4888325f1415a085125e8f7cdc99fd91dbd7280373c5bd8823e3156348f5bae6dacd436c919c6dd53e23487da03fd02396306d248cda0e99f33420f577ee8ce54b67080280d1ec69821bcb6a8839396f965ab6ff72a70'));

bool(false), ben yanlış yaptığım bir şey Hangi çıkış var mı?

EDIT Best with a demo?

3 Cevap

Sen ASCII metin md5 karma hesaplarken edilir. Sen bloklar üzerinde md5 çalıştırmak sonra, asıl ikili bytes için ASCII onaltılık gösterimi dönüştürmek gerekir.

Bu bir denemek göre (this paper):

<?php
$a = md5("\xA6\x64\xEA\xB8\x89\x04\xC2\xAC\x48\x43\x41\x0E\x0A\x63\x42\x54\x16\x60\x6C\x81\x44\x2D\xD6\x8D\x40\x04\x58\x3E\xB8\xFB\x7F\x89\x55\xAD\x34\x06\x09\xF4\xB3\x02\x83\xE4\x88\x83\x25\x71\x41\x5A\x08\x51\x25\xE8\xF7\xCD\xC9\x9F\xD9\x1D\xBD\xF2\x80\x37\x3C\x5B\x97\x9E\xBD\xB4\x0E\x2A\x6E\x17\xA6\x23\x57\x24\xD1\xDF\x41\xB4\x46\x73\xF9\x96\xF1\x62\x4A\xDD\x10\x29\x31\x67\xD0\x09\xB1\x8F\x75\xA7\x7F\x79\x30\xD9\x5C\xEB\x02\xE8\xAD\xBA\x7A\xC8\x55\x5C\xED\x74\xCA\xDD\x5F\xC9\x93\x6D\xB1\x9B\x4A\xD8\x35\xCC\x67\xE3");
$b = md5("\xA6\x64\xEA\xB8\x89\x04\xC2\xAC\x48\x43\x41\x0E\x0A\x63\x42\x54\x16\x60\x6C\x01\x44\x2D\xD6\x8D\x40\x04\x58\x3E\xB8\xFB\x7F\x89\x55\xAD\x34\x06\x09\xF4\xB3\x02\x83\xE4\x88\x83\x25\xF1\x41\x5A\x08\x51\x25\xE8\xF7\xCD\xC9\x9F\xD9\x1D\xBD\x72\x80\x37\x3C\x5B\x97\x9E\xBD\xB4\x0E\x2A\x6E\x17\xA6\x23\x57\x24\xD1\xDF\x41\xB4\x46\x73\xF9\x16\xF1\x62\x4A\xDD\x10\x29\x31\x67\xD0\x09\xB1\x8F\x75\xA7\x7F\x79\x30\xD9\x5C\xEB\x02\xE8\xAD\xBA\x7A\x48\x55\x5C\xED\x74\xCA\xDD\x5F\xC9\x93\x6D\xB1\x9B\x4A\x58\x35\xCC\x67\xE3");
//--------------------------------------------------------------------------------------!---------------------------------------------------------------------------------------------------!---!-------------------------------------------------------!-----------------------------------------------------------------------------------------------!-------------------------------------------------------------------------------------------------------!-------------------------------------------------------!------------------

var_dump($a === $b);

Her iki dizeleri farklılık nerede ünlem işaretleri yer var.

Ben same question isteyin.

Dize onaltılık değerlerini içerir. Sen hex2bin("d131d...") kullanarak veya PHP pack("H*", "d131d..."),

echo md5(hex2bin("d131dd02c5e6eec4693d9a0698aff95c2fcab58712467eab4004583eb8fb7f8955ad340609f4b30283e488832571415a085125e8f7cdc99fd91dbdf280373c5bd8823e3156348f5bae6dacd436c919c6dd53e2b487da03fd02396306d248cda0e99f33420f577ee8ce54b67080a80d1ec69821bcb6a8839396f9652b6ff72a70"));

veya

echo md5(pack("H*", "d131dd02c5e6eec4693d9a0698aff95c2fcab58712467eab4004583eb8fb7f8955ad340609f4b30283e488832571415a085125e8f7cdc99fd91dbdf280373c5bd8823e3156348f5bae6dacd436c919c6dd53e2b487da03fd02396306d248cda0e99f33420f577ee8ce54b67080a80d1ec69821bcb6a8839396f9652b6ff72a70");

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