In light of to the latest column of Jon Udell and the recent unveiling of the Palladium initiative, Hugh Pyle explains how Groove handles user authentication and data encryption:
Groove messages -- IMs and shared-space synchronisation -- are always strongly encrypted. They're also signed, meaning that you can always provably verify their authenticity. Crucially, you don't get a choice in this: it's all-crypto-all-the-time. User indifference, the biggest factor in the lousy take-up of strong crypto, is completely ignored.
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