- 期刊
- OpenAccess
ID-based Proxy Re-signature with Aggregate Property
並列摘要
Recently, Garg et al. proposed an approximate candidate of leveled multi-linear map that can be used for unrestricted aggregation. In this work, we explore building construction of ID-based proxy re-signature with aggregate property, which has many applications. Our construction utilizes the full domain hash structure from multi-linear map proposed by Hohenburger et al. In particular, Hohenburger et al. proposed an ID-based signature with unrestricted aggregation. We build on this result to offer the first bidirectional ID-based proxy re-signature that admits unrestricted aggregation. In our construction, an arbitrary-sized set of signatures or re-signatures can be aggregated into a single group element, which authenticates the whole set. Our scheme can be proved selectively secure under the l+n-MCDH assumption.
延伸閱讀
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