note 106154 deleted from function.gmp-xor by danbrown
| From: | danbrown@php.net | Date: | Fri, 14 Oct 2011 14:03:20 +0000 |
| Subject: | note 106154 deleted from function.gmp-xor by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-183882@lists.php.net to get a copy of this message | ||
Note Submitter: phantomgamer at cox dot net
----
I agree RND is not truely random but you can improve it quite a bit if you use the INT to retrieve
the number of time the 18.2 times a second interrupt has occured since the computer was powered up
as a SEED. You can even obscure this number more by XOR'n it against the file size and use the
resulting number as the seed.
Use a database (.DAT file for ACCESS) stored on a USB memory stick to store the resulting random key
used on a specific file.
Remember to never use the same random key on more than one file. The more files the key is used on
provides clues as to the key. (ex: Xor one file against the other).
To enhanse the XOR even more, compress the file (remove repeating patterns) from the file before it
is encrypted.
Lance