On Thu, Dec 13, 2001 at 04:19:18PM +0100, Marc Mutz wrote: > > > blowfish is fast and has quite a long track record. I'd use it if > > > it wasn't for the 64bit blocksize. In fact, I do use it ;-) > > > The blocksize isn't an issue if you enrypt only modest volumes of > > > data under a single key (like you should!) Several hundred MB are > > > OK. But don't go beyond 2 or 3 GB. > > > > what are the detail of the problem with blowfish beyond 2 or 3GB ? > > Birthday attack. Equal ciphertexts are being generated. Actually, the > boundary is 32G, but it's best to stay away from it. suppose you are the attacker and get data encrypted with a block cipher, two or more cipher texts block are equal, which information did get from it ? - Linux-crypto: cryptography in and on the Linux system Archive: http://mail.nl.linux.org/linux-crypto/
