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Cryptanalysis of a Handover Authentication Scheme Using Credentials Based on Chameleon Hashing
Eun-Jun YOON Muhammad Khurram KHAN Kee-Young YOO
IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/12/01
Online ISSN: 1745-1361
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Information Network
handover authentication, chameleon hashing, security, forward/backward secrecy,
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Quite recently [IEEE Commu. Letters, Vol.14, No.1, 2010], Choi et al. proposed a handover authentication scheme using credentials based on chameleon hashing, claiming to provide several security features including Perfect Forward/Backward Secrecy (PFS/PBS). This paper examines the security of the scheme and shows that the scheme still fails to achieve PFS/PBS unlike their claims.