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Erschienen in:
2008 | OriginalPaper | Buchkapitel
Aggregate Message Authentication Codes
verfasst von : Jonathan Katz, Andrew Y. Lindell
Erschienen in: Topics in Cryptology – CT-RSA 2008
Verlag: Springer Berlin Heidelberg
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We propose and investigate the notion of
aggregate message authentication codes (MACs)
which have the property that multiple MAC tags, computed by (possibly) different senders on multiple (possibly different) messages, can be aggregated into a shorter tag that can still be verified by a recipient who shares a distinct key with each sender. We suggest aggregate MACs as an appropriate tool for authenticated communication in mobile ad-hoc networks or other settings where resource-constrained devices share distinct keys with a single entity (such as a base station), and communication is an expensive resource.