PeerSec Networks MatrixSSL?is an embedded SSL implementation designed for small footprint applications and devices. PeerSec Networks offers a fully supported, commercial version as well as an open source version that is available for download. PeerSec MatrixSSL allows secure management of remote devices. Several secure embedded Web servers also use MatrixSSL for their encryption layer.
With OpenSSL 0.9.6, a new component has been added to support external crypto devices, for example accelerator cards. The component is called ENGINE, and has still a pretty experimental status and almost no documentation. It s designed to be fairly easily extensible by the calling programs.