Gentoo Archives: gentoo-security

From: bmicek@×××××××××.net
To: gentoo-security@l.g.o
Subject: Re: [gentoo-security] Encryption Ciphers
Date: Thu, 28 Feb 2008 18:03:22
Message-Id: 33516.1204221740@speakeasy.net
> > Do you think keysize is more important than choosing a cipher which
> > made it further in the AES-contest and therefore using Anubis with
> > 320bit would be a better choice than AES or Twofish with 256bit?
I think a 256 bit cipher has 2^256 combinations or 115792089237316195423570985008687907853269984665640564039457584007913129639936
I think a 320 bit cipher has this many combinations:
2135987035920910082395021706169552114602704522356652769947041607822219725780640550022962086936576

I think the number of particals in the universe is 10^72 to 10^87 (http://www.stormloader.com/ajy/reallife.html).  I think both numbers are smaller than 2^256

Brian Micek


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