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Abstract: We present simple protocols for oblivious transfer and password-basedidentification which are secure against general attacks in thenoisy-quantum-storage model as defined in KWW09. We argue that a technicaltool from KWW09 suffices to prove security of the known protocols. Whereasthe more involved protocol for oblivious transfer from KWW09 requires lessnoise in storage to achieve security, our -canonical- protocols have theadvantage of being simpler to implement and the security error is easiercontrol. Therefore, our protocols yield higher OT-rates for many realisticnoise parameters.Furthermore, the first proof of security of a direct protocol forpassword-based identification against general noisy-quantum-storage attacks isgiven.



Autor: Christian Schaffner

Fuente: https://arxiv.org/



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