Abstract:The importance of correctly identifying and authenticating a student in an e-learning environment comes from the necessity to avoid fraud or cheating. A new deniable authentication protocol based on the generalized ElGamal signature scheme was proposed by Shao in [11]. However, this paper demonstrates that Shao's protocol has two drawbacks: forward/backward secrecy problem and message confidentiality problem. To mitigate the security breaches, we also propose an improved deniable authentication protocol based … Show more
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