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Cited 5 time in webofscience Cited 6 time in scopus
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FAS: Forward secure sequential aggregate signatures for secure logging

Authors
Kim, JihyeOh, Hyunok
Issue Date
Jan-2019
Publisher
ELSEVIER SCIENCE INC
Keywords
Forward security; Digital signature; Proven security; Aggregation
Citation
INFORMATION SCIENCES, v.471, pp.115 - 131
Indexed
SCIE
SCOPUS
Journal Title
INFORMATION SCIENCES
Volume
471
Start Page
115
End Page
131
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/32918
DOI
10.1016/j.ins.2018.08.044
ISSN
0020-0255
Abstract
Audit logs are an elemental part of computer systems due to their forensic value. Safeguarding audit logs on a physically unprotected machine are a challenging work, especially in the presence of active adversaries. Forward security is necessary for such a logging system. In this paper, we propose a new Forward secure sequential Aggregate Signature (FAS) scheme with optimal storage and communication for keys and signatures. To the best of our knowledge, our FAS scheme is the only scheme that has constant-sized public and secret keys as well as constant-sized aggregate signatures. Our proposed scheme supports aggregation of consecutive signatures by a third party. We prove the security of our proposed scheme under the hardness of factoring assumption, in the random oracle model.
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