We present the first dynamic universal accumulator that allows (1) the accumulation of elements in a DDH-hard group G and (2) one who knows x such that y = gx has - or has not - been accumulated, where g generates G, to efficiently prove her knowledge of such x in zero knowledge, and hence without revealing, e.g., x or y. We introduce the Attribute-Based Anonymous Credential System, which allows the verifier to authenticate anonymous users according to any access control policy expressible as a formula of possibly negated boolean user attributes. We construct the system from our accumulator.
CITATION STYLE
Au, M. H., Tsang, P. P., Susilo, W., & Mu, Y. (2009). Dynamic universal accumulators for DDH groups and their application to attribute-based anonymous credential systems. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 5473, pp. 295–308). https://doi.org/10.1007/978-3-642-00862-7_20
Mendeley helps you to discover research relevant for your work.