Gentoo Archives: gentoo-user

From: kashani <kashani-list@××××××××.net>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] My last words on cryptology and cryptography.
Date: Thu, 26 Jun 2008 18:35:12
Message-Id: 4863E15A.80009@badapple.net
In Reply to: Re: [gentoo-user] My last words on cryptology and cryptography. by Alan McKinnon
1 Alan McKinnon wrote:
2 > The calculation is quite simple - measure how quickly a specific
3 > computer can match keys. Divide this into the size of the keyspace. The
4 > average time to brute force a key is half that value. AFAIK this still
5 > averages out at enormous numbers of years, even at insane calculation
6 > rates like what RoadRunner can achieve.
7
8 256 bit keys. The
9 115792089237316195423570985008687907853269984665640564039457584007913129639936
10 keys are quite a lot to check (although, if all the atoms in the
11 universe [estimated 10^78] were to test 1 key/sec, it'd only take about
12 0.1157920892 seconds). However.. 512 bit keys with all the atoms testing
13 a trillion keys/second would take about
14 (2^512)/(10^78)/60/60/24/(36525/100)/(10^12) or 4.2486779507765473608e56
15 years..
16
17 I submit that brute forcing an AES key of reasonably length is
18 currently impossible in an amount of time that would matter to the human
19 race.
20
21 kashani
22 --
23 gentoo-user@l.g.o mailing list

Replies

Subject Author
Re: [gentoo-user] My last words on cryptology and cryptography. Steven Lembark <lembark@×××××××.com>