Journal
COMPUTER NETWORKS
Volume 54, Issue 14, Pages 2482-2491Publisher
ELSEVIER
DOI: 10.1016/j.comnet.2010.04.008
Keywords
Information security; Message authentication; Digital signature; Certificateless cryptography
Categories
Funding
- Spanish Government [TSI2007-65406-C03-01, 2010 CSD2007-00004]
- Government of Catalonia [2009 SGR 1135]
- Chinese NSF [60673070, 60970114, 60970115, 60970116]
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Aggregate signatures allow an efficient algorithm to aggregate n signatures of n distinct messages from n different users into one single signature. The resulting aggregate signature can convince a verifier that the n users did indeed sign the n messages. This feature is very attractive for authentications in bandwidth-limited applications such as reverse multicasts and senor networks. Certificateless public key cryptography enables a similar functionality of public key infrastructure (PKI) and identity (ID) based cryptography without suffering from complicated certificate management in PKI or secret key escrow problem in ID-based cryptography. In this paper, we present a new efficient certificateless aggregate signature scheme which has the advantages of both aggregate signatures and certificateless cryptography. The scheme is proven existentially unforgeable against adaptive chosen-message attacks under the standard computational Diffie-Hellman assumption. Our scheme is also very efficient in both communication and computation and the proposal is practical for many-to-one authentication. (C) 2010 Elsevier B.V. All rights reserved.
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