Forward Secure ID-based Group Key Agreement Protocol with Anonymity

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ID-based group key agreement (GKA) has been increasingly researched with the advantage of simple public key management. However, identities of group members can be exposed in the ID-based GKA protocol, so eavesdroppers can easily learn who belongs to the specific group. Recently, Wan et al. proposed a solution for this problem, an anonymous ID-based GKA protocol, which can keep group members’ anonymity to outside eavesdroppers; nevertheless, the protocol has some security flaws. This paper shows that Wan et al.’s GKA is insecure against colluding attack and their joining/leaving protocols do not guarantee forward and backward secrecy. We also propose a new forward secure ID-based GKA with anonymity from enhancing Wan et al.’s joining/leaving protocols. Our scheme provides forward and backward secrecy and is essentially just efficient as Wan et al.’s scheme.
Publisher
IEEE
Issue Date
2009-06-18
Citation

Third International Conference on Emerging Security Information, Systems and Technologies, pp.274-279

ISBN
978-0-7695-3668-2
DOI
10.1109/SECURWARE.2009.49
URI
http://hdl.handle.net/10203/15884
Appears in Collection
CS-Journal Papers(저널논문)
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