note 26292 added to function.md5
| From: | idf at rack1 dot php dot net | Date: | Fri, 25 Oct 2002 09:10:14 +0000 |
| Subject: | note 26292 added to function.md5 | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-38533@lists.php.net to get a copy of this message | ||
A brute force attack on a MD5 hashes seems to be useless, considering the following facts:
- there are 2^128 of different MD5 hashes. (16^32)
- there is an almost infinite number of possible character combinations
- if you create 2^128+1 different strings, MD5 will produce at least 2 equal MD5 hashes.
- if equal keys are possible it seems to be (?) impossible to "encrypt" an MD5 hash
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http://www.php.net/manual/en/function.md5.php
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