I will usually check out the RSA Security conference trade show floor just to get a flavor of what's hot, new, tired, overdone in that domain. This year it occupied most of the Moscone North show floor; quite a change from my first RSA show in the early '90s, where the trade area sparsely filled one of the smaller upstairs meeting rooms in the Redwood Shores Sofitel. Impressions:
Every year the show is less about cryptography per se. I'm sure this has something to do with RSA's attempts to diversify as its patents expire, but I do think it reflects the state of the field. Crypto has become a standardized component of security solutions, and the biggest perceived threats are not in the privacy area.
You can assess the perceived threats du jour by counting booths. A blur of intrusion detection systems. Every conceivable combination of app-layer, network edge DOS/malcode/spam detection and management hardware thingie. Piles of single-signon or authentication gadgets, all pledging allegiance to some federated identity standard or alliance. Trivial conclusion: These areas are all over-invested, steer clear unless you have a chance to back a company with significant growth in the top line and its customer list.
Coolest thing at the show: An actual quantum cryptography product from Magiq Technology (name thanks to A. C. Clarke, no doubt). I'm impressed that quantum crypto has made it in such a short time from esoteric theory to a chunk of hardware for which you can write a PO. And if the number theory behind public key crypto makes your head hurt, just try quantum entanglement. The virtue of this gadget is completely unbreakable key exchange at a distance. The catch is that you need a fiber optic connection direct to each point that needs key material - that'll slow down deployment just a tad. Fortunately for Magiq, they seem to have some friendly angels who are willing to wait out the transition from science project to real business.
... stands this amazing old growth redwood, discovered by a small band of intrepid trail surveyors this weekend. For scale, that's yours truly at center bottom; the base is about 12' in diameter. Due to its location, the top has been blown out of it at least four times, creating the unusual multiple trunked structure, each of which is four foot or so wide.