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Posted by Toby Inkster on 12/13/06 10:41
Norman Peelman wrote:
> Is it possible this has been fixed (running PHP4.3.4) as I notice the post
> is from 2005... Or am I not looking at something right?
The strings given in the article need to be un-wordwrapped and un-hexed
before comparison...
<?php
# These are hexadecimal versions of the true strings that need to be
# tested for MD5 values.
$hex_A =
'd131dd02c5e6eec4693d9a0698aff95c2fcab58712467eab4004583eb8fb7f8955ad340609f
4b30283e488832571415a085125e8f7cdc99fd91dbdf280373c5bd8823e3156348f5bae6dacd
436c919c6dd53e2b487da03fd02396306d248cda0e99f33420f577ee8ce54b67080a80d1ec69
821bcb6a8839396f9652b6ff72a70';
$hex_B =
'd131dd02c5e6eec4693d9a0698aff95c2fcab50712467eab4004583eb8fb7f8955ad340609f
4b30283e4888325f1415a085125e8f7cdc99fd91dbd7280373c5bd8823e3156348f5bae6dacd
436c919c6dd53e23487da03fd02396306d248cda0e99f33420f577ee8ce54b67080280d1ec69
821bcb6a8839396f965ab6ff72a70';
# First, remove extra characters introduced by wrapping in article.
$hex_A = preg_replace('/[\r\n\s]/', '', $hex_A);
$hex_B = preg_replace('/[\r\n\s]/', '', $hex_B);
# Now, unhex them.
$str_A = pack('H*', $hex_A);
$str_B = pack('H*', $hex_B);
$sha1_A = sha1($str_A);
$sha1_B = sha1($str_B);
$crc32_A = crc32($str_A);
$crc32_B = crc32($str_B);
$md5_A = md5($str_A);
$md5_B = md5($str_B);
echo "<pre>\n";
echo "To prove the strings are different, look at their SHA-1 and CRC32 values.\n";
echo "\n";
echo "SHA-1 A: {$sha1_A}\n";
echo "SHA-1 B: {$sha1_B}\n";
echo "\n";
echo "CRC32 A: {$crc32_A}\n";
echo "CRC32 B: {$crc32_B}\n";
echo "\n";
echo "Now behold...\n";
echo "\n";
echo "MD5 A: {$md5_A}\n";
echo "MD5 B: {$md5_B}\n";
echo "</pre>\n";
?>
--
Toby A Inkster BSc (Hons) ARCS
Contact Me ~ http://tobyinkster.co.uk/contact
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