On Wed, Jul 11, 2001 at 06:52:23PM -0700, Mike Touloumtzis wrote: > On Thu, Jul 12, 2001 at 01:01:52AM +0200, peter k. wrote: > > it would be also interesting to know the differences between AES, > > AES128 AES256, etc and it would be a good idea to include some kind of > > list [in our future fixed I-patch] with all ciphers compared on, for > > example, how long it will take to decrypt them with ASCI White, how > > fast they are, etc > As far as is known by the public cryptographic community, none of > the AES variants can be broken, so the attacker must do a brute > force search of a keyspace with at least 2^128 values. > Even a 128 bit brute force search (the smallest key size of any > AES variant) is far beyond the capabilities of any supercomputer > in existence. Ability to break a 128 bit cipher in our lifetimes > will take a revolution in technology, not just improvements to the > current tech. > AES128 (the fastest AES variant) is less than twice as fast as AES256 > (the slowest AES variant). A recent desktop (say, PIII 1GHz) should > be able to do AES256 at more than 100Mbit/s. > If you want a list of "good" (i.e. currently considered unbreakable > by anyone on earth, now or in the foreseeable future) symmetric > encryption algorithms, install GnuPG, run 'gpg --version', and look > at the 'Cipher:' line. This list omits some algorithms like IDEA > that are patented and thus unimplemented in GnuPG. Unless you are like most of us and have it loaded as a module for compatibility with certain other versions of PGP. Then IDEA shows up as well. :-) > miket > > Linux-crypto: cryptography in and on the Linux system > Archive: http://mail.nl.linux.org/linux-crypto/ Mike -- Michael H. Warfield | (770) 985-6132 | mhw@xxxxxxxxxxxx (The Mad Wizard) | (678) 463-0932 | http://www.wittsend.com/mhw/ NIC whois: MHW9 | An optimist believes we live in the best of all PGP Key: 0xDF1DD471 | possible worlds. A pessimist is sure of it! Linux-crypto: cryptography in and on the Linux system Archive: http://mail.nl.linux.org/linux-crypto/
