2023 | OriginalPaper | Buchkapitel
Anonymous Permutation Routing
verfasst von : Paul Bunn, Eyal Kushilevitz, Rafail Ostrovsky
Erschienen in: Theory of Cryptography
Verlag: Springer Nature Switzerland
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Abstract
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Improved computational efficiency (quadratic to near linear): Our protocol matches the communication complexity of [SW21] for each sender/receiver, while reducing the computational overhead for the router to polylog overhead instead of linear overhead.
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Relaxation of assumptions: Security of the protocol in [SW21] relies on the Decisional Linear assumption in bilinear groups; while security for our protocol follows from the existence of any rate-1 oblivious transfer (OT) protocol (instantiations of which are known to exist under the DDH, QR and LWE assumptions [DGI+19, GHO20]).