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Title:
A New Joint Fingerprinting and Decryption Scheme based on a Lattice Problem
Authors: Jia XU
Abstract:We propose a new encryption scheme that supports joint fingerprinting and decryption. The scheme is remarkably resistant to known-plaintext attack and collusion attack (e.g. average attack or other linear combination attack) on keys. Interestingly, the security of our scheme is relied on a lattice problem: Given a collection of random lattice points generated from a short basis of a lattice, find the short basis. The scheme can be used as a traitor-tracing scheme or a buyer-seller watermarking scheme.
ePrint: https://eprint.iacr.org/2010/247
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