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Hierarchical group signatures
KTH, School of Computer Science and Communication (CSC), Numerical Analysis and Computer Science, NADA.
KTH, School of Computer Science and Communication (CSC), Numerical Analysis and Computer Science, NADA.ORCID iD: 0000-0003-4157-1371
2005 (English)In: AUTOMATA, LANGUAGES AND PROGRAMMING, PROCEEDINGS / [ed] Caires, L; Italiano, GE; Monteiro, L; Palamidessi, C; Yung, M, 2005, Vol. 3580, 446-458 p.Conference paper, Published paper (Refereed)
Abstract [en]

We introduce the notion of hierarchical group signatures. This is a proper generalization of group signatures, which allows multiple group managers organized in a tree with the signers as leaves. When opening a signature a group manager only learns to which of its subtrees, if any, the signer belongs. We provide definitions for the new notion and construct a scheme that is provably secure given the existence of a family of trapdoor permutations. We also present a construction which is relatively practical, and prove its security in the random oracle model under the strong RSA assumption and the DDH assumption.

Place, publisher, year, edition, pages
2005. Vol. 3580, 446-458 p.
Series
LECTURE NOTES IN COMPUTER SCIENCE, ISSN 0302-9743 ; 3580
National Category
Computer and Information Science
Identifiers
URN: urn:nbn:se:kth:diva-42731ISI: 000230880500037Scopus ID: 2-s2.0-26444526650ISBN: 3-540-27580-0 (print)OAI: oai:DiVA.org:kth-42731DiVA: diva2:448072
Conference
32nd International Colloquium on Automata, Languages and Programming (ICALP 2005) Location: Lisbon, PORTUGAL Date: JUL 11-15, 2005
Note
QC 20111014Available from: 2011-10-14 Created: 2011-10-12 Last updated: 2012-01-20Bibliographically approved

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Wikström, Douglas

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