Abstract:In fuzzy identity-based fully homomorphic signature (FIBFHS), the output of homomorphic computation, which is related to the identity id, can be verified by the receiver using the identity id^ as long as id and id^ are within a certain distance of each other. Gorbunov, Vaikuntanathan and Wichs (STOC 2015) introduced a new notion called homomorphic trapdoor functions (HTDFs) and constructed the first leveled fully homomorphic signature (FHS) scheme from HTDFs. In this paper, firstly, we extend the notion of HTD… Show more
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