Doc #61307 [Opn->Csd]: hash-tiger generates a different value between 5.3/5.4
| From: | cmb@php.net | Date: | Sun, 14 Jun 2015 15:01:18 +0000 |
| Subject: | Doc #61307 [Opn->Csd]: hash-tiger generates a different value between 5.3/5.4 | ||
| References: | 1 | Groups: | php.doc.bugs |
| Request: | Send a blank email to doc-bugs+get-12420@lists.php.net to get a copy of this message | ||
Edit report at https://bugs.php.net/bug.php?id=61307&edit=1
ID: 61307
Updated by: cmb@php.net
Reported by: andres at phalconphp dot com
Summary: hash-tiger generates a different value between
5.3/5.4
-Status: Open
+Status: Closed
Type: Documentation Problem
Package: hash related
Operating System: Irrelevant
PHP Version: 5.4.0
-Assigned To:
+Assigned To: cmb
Block user comment: N
Private report: N
New Comment:
This bug has been fixed in the documentation's XML sources. Since the
online and downloadable versions of the documentation need some time
to get updated, we would like to ask you to be a bit patient.
Thank you for the report, and for helping us make our documentation better.
Previous Comments:
------------------------------------------------------------------------
[2015-06-14 15:00:40] cmb@php.net
Automatic comment from SVN on behalf of cmb
Revision: http://svn.php.net/viewvc/?view=revision&revision=336947
Log: added example regarding changed byte-order of tiger hashes as of PHP 5.4 (fixes #61307)
------------------------------------------------------------------------
[2012-03-09 08:51:26] mike@php.net
The doc team would probably not notice an "not a bug" bug ;)
------------------------------------------------------------------------
[2012-03-09 08:49:50] mike@php.net
Here's something for the documentation team:
/* calculate pre-php-5.4 tiger hashes with php-5.4 */
function old_tiger($data = "", $width=192, $rounds = 3) {
return substr(
implode(
array_map(
function ($h) {
return str_pad(bin2hex(strrev($h)), 16, "0");
},
str_split(hash("tiger192,$rounds", $data, true), 8)
)
),
0, 48-(192-$width)/4
);
}
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[2012-03-08 21:16:04] andres at phalconphp dot com
Thanks Mike and Rasmus for all your great help!
------------------------------------------------------------------------
[2012-03-08 17:26:48] mike@php.net
Sorry folks, here's a one-liner to re-create pre-PHP-5.4 hashes:
implode("", array_map("bin2hex", array_map("strrev",
str_split(hash("tiger192,3", $input, true), 8))));
Truncate the result to the length you need (128,160,192 bits). Make sure every
array value is 16 hex digits long or else lpad it with literal 0s.
If you used 192 bit tiger, you can use the following one-liner to create correct
hashes from the wrong ones:
implode("", array_map("bin2hex", array_map("strrev",
array_map("hex2bin",
str_split($wronghash,16)))));
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--
Edit this bug report at https://bugs.php.net/bug.php?id=61307&edit=1