FITUG e.V. Förderverein Informationstechnik und Gesellschaft

Groove, and GAK

------- Forwarded message follows ------- From: "Adrian Midgley" <akm@92tr.freeserve.co.uk> To: "ukcrypto" <ukcrypto@chiark.greenend.org.uk> Subject: Groove, and GAK Date sent: Thu, 8 Feb 2001 20:12:11 -0000 Send reply to: ukcrypto@chiark.greenend.org.uk

Forwarded

Groove Networks have published some quite detailed backgrounders on their peer-to-peer security architecture; worthwhile reading.

http://www.groove.net/feature/security/securitybrief.pdf (short and fluffy) http://www.groove.net/feature/security/ch18.gtml (long and gnarly)

To summarise: they're using some interesting techniques to secure Groove shared space ("distributed virtual object store") and instant messaging collaborations, implemented on pretty reputable algorithms (1536-bit-modulus ElGamal, 192-bit MARC4, HMAC/SHA1 and DH).

There's a Q&A forum (registration required to post), at http://www.groove.net/forums/categories.gtml?catid=24

In the UK this raises some interesting issues around GAK; because of its decentralisation, and because this seems to be the first _consumer_ communications tool with such strong crypto designed for "zero effort, zero configuration" security.

-Hugh hpyle@agora.co.uk

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