Abstract:Abstract. The notion of P-homomorphic signatures, introduced by Ahn et al. (TCC 2012), generalizes various approaches for public computations on authenticated data. For a given predicate P anyone can derive a signature for a message m from the signatures of a set of messages M , as long as P(M, m ) = 1. This definition hence comprises notions and constructions for concrete predicates P such as homomorphic signatures and redactable signatures.In our work we address the question of how to combine P i -homomorphi… Show more
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