Cryptography In the Bounded Quantum-Storage Model

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dc.creatorDamgaard, Ivan
dc.creatorFehr, Serge
dc.creatorSalvail, Louis
dc.creatorSchaffner, Christian
dc.date2005-08-30
dc.date2006-07-14
dc.date.accessioned2026-07-07T06:43:41Z
dc.date.available2026-07-07T06:43:41Z
dc.descriptionWe initiate the study of two-party cryptographic primitives with unconditional security, assuming that the adversary's quantum memory is of bounded size. We show that oblivious transfer and bit commitment can be implemented in this model using protocols where honest parties need no quantum memory, whereas an adversarial player needs quantum memory of size at least n/2 in order to break the protocol, where n is the number of qubits transmitted. This is in sharp contrast to the classical bounded-memory model, where we can only tolerate adversaries with memory of size quadratic in honest players' memory size. Our protocols are efficient, non-interactive and can be implemented using today's technology. On the technical side, a new entropic uncertainty relation involving min-entropy is established.
dc.description26 pages, full version of a paper appeared in 46th Annual IEEE Symposium on Foundations of Computer Science (FOCS), pages 449-458, 2005
dc.identifierhttps://arxiv.org/abs/quant-ph/0508222
dc.identifierhttp://arxiv.org/abs/quant-ph/0508222
dc.identifierProceedings of the 46th IEEE Symposium on Foundations of Computer Science - FOCS 2005, pages 449-458
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/102509
dc.subjectQuantum Physics
dc.subjectCryptography and Security
dc.titleCryptography In the Bounded Quantum-Storage Model
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