Open AccessExtraction Security of Sequential Aggregate Signatures
Author(s) -
Jiaqi ZHAI,
Jian LIU,
Lusheng CHEN
Publication year - 2021
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2021.06.011
Subject(s) - aggregate (composite) , signature (topology) , computer science , context (archaeology) , property (philosophy) , point (geometry) , analogy , identity (music) , extraction (chemistry) , data mining , mathematics , paleontology , philosophy , linguistics , materials science , geometry , physics , chemistry , epistemology , chromatography , acoustics , composite material , biology
Aggregate signature schemes enable anyone to compress many signatures into one. Besides the unforgeability of aggregate signature, another property called aggregate extraction sometimes is useful. In sequential aggregate signature schemes, the aggregate signature is computed incrementally by the signers. We introduce extraction security in the sequential context which can be seen as an analogy of aggregate extraction introduced by Boneh et al. in CRYPTO 2003. In addition to the practical meaning, it also has benefits in the construction of hierarchical identity‐based signatures as we will point out. We study several well known aggregate signature schemes and prove some of them satisfy extraction security.