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Erschienen in:
2012 | OriginalPaper | Buchkapitel
Constant-Size Structure-Preserving Signatures: Generic Constructions and Simple Assumptions
verfasst von : Masayuki Abe, Melissa Chase, Bernardo David, Markulf Kohlweiss, Ryo Nishimaki, Miyako Ohkubo
Erschienen in: Advances in Cryptology – ASIACRYPT 2012
Verlag: Springer Berlin Heidelberg
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This paper presents efficient structure-preserving signature schemes based on assumptions as simple as Decisional-Linear. We first give two general frameworks for constructing fully secure signature schemes from weaker building blocks such as variations of one-time signatures and random-message secure signatures. They can be seen as refinements of the Even-Goldreich-Micali framework, and preserve many desirable properties of the underlying schemes such as constant signature size
and structure preservation
. We then instantiate them based on simple (i.e., not q-type) assumptions over symmetric and asymmetric bilinear groups. The resulting schemes are structure-preserving and yield constant-size signatures consisting of 11 to 17 group elements, which compares favorably to existing schemes relying on q-type assumptions for their security.