Abstract
This paper presents a hierarchical predicate encryption (HPE) scheme for inner-product predicates that is secure (selectively attribute-hiding) in the standard model under new assumptions. These assumptions are non-interactive and of fixed size in the number of adversary’s queries (i.e., not “q-type”), and are proven to hold in the generic model. To the best of our knowledge, this is the first HPE (or delegatable PE) scheme for inner-product predicates that is secure in the standard model. The underlying techniques of our result are based on a new approach on bilinear pairings, which is extended from bilinear pairing groups over linear spaces. They are quite different from the existing techniques and may be of independent interest.
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Okamoto, T., Takashima, K. (2009). Hierarchical Predicate Encryption for Inner-Products. In: Matsui, M. (eds) Advances in Cryptology – ASIACRYPT 2009. ASIACRYPT 2009. Lecture Notes in Computer Science, vol 5912. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-10366-7_13
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DOI: https://doi.org/10.1007/978-3-642-10366-7_13
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