P2P Quality Control
Posted on March 22, 2005
Freedom to Tinker writes about Cornell researchers attempting to invent a form of quality control for P2P networks:
This scheme presents would-be adversaries with a dilemma. If Alice’s votes are truthful, then if you want to mislead Alice about one file, you have to earn her trust by telling her the truth about other files. You can tell occasional lies, but on the whole you have to be a truth-teller. (You can achieve the same effect by lying about almost everything, and telling the truth about just one file. Then Alice will conclude that you are a habitual liar, and will count your votes with negative weight, giving credence to the opposite of what you say. Again, you have to provide Alice with many useful-to-her votes in order to trick her once.)
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