An anonymous, peer-to-peer service for generating cryptographic coins for the purposes of buying things. Cryptocoins "minted" are based upon the amount of bandwidth and CPU time your systems donate to the Bitcoin network. Backed by what people think the coins are worth (just like cash money, come to think of it). Read the FAQ and the paper, it's pretty interesting.
A framework for building cryptographic protocols so you don't have to do it from the ground up. Mutual and optional authentication. Multiple languages supported.
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