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Authentication with key agreement protocol (AKA) can provide mutual authentication and create a session key between two communication parties. In 2005, Chen and Yeh proposed an AKA protocol based on one-way hash function and exclusive-or (XOR) operations. Having the feature of fast processing, their protocol is more efficient than previously related works. However, we discover that Chen and Yeh¡¦s...
Kerberos is a well-known network authentication mechanism. Based upon Kerberos' model, Sun and Yeh proposed three user authentication and key establishment (UAKE) protocols with perfect forward secrecy (PFS). However, due to the use of public-key cryptosystem to implement UAKE, their protocols are not suitable for mobile devices, which have computational, power and storage constraints. Therefore,...
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