Peter van Hove wrote: > i was wndering if there already is support for crypto cards in the kernel and if so > can they be used to accelerate IPsec encryption. This question has come up a number of times on FreeS/WAN's linux-ipsec@xxxxxxxxx list, including being asked by several hardware vendors. So far the answer has been that FreeS/WAN wasn't designed for that, but the kernel parts are in the process of re-design for other reasons and we'll try to provide a clean interface to hardware in the new design. It is not one of the top considerations, though. Meanwhile, someone at chip/board vendor Chrysalis (www.chrysalis-its.com) is working on kernel patches to support their stuff, with the co-operation of the FreeS/WAN kernel hacker. The intention is to define an interface generic enough that other hardware could use it as well. For details, search that list's archive: http://www.sandelman.ottawa.on.ca/linux-ipsec/ Linux-crypto: cryptography in and on the Linux system Archive: http://mail.nl.linux.org/linux-crypto/