ID-based cryptosystem simplifies the key management process which is a heavy burden in the traditional certificate-based cryptosystems. It has been, for a few years, the most active area of research and currently is of great interest to the cryptographic society. Evaluating the security is a very important and tricky business in the design of new
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With the fast development of computer and networks, information security has become one of the most important problems in the information society. Authentication schemes are one of the most useful and fundamental primitives in public key cryptography which applies cryptographic methods to achieve the security services such as authenticity, integrity and nonrepudiation. Digital signatures and
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