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This paper describes various ways of providing freshness assurance of authentication protocols. It approaches the issue by discussing the notion of time in distributed authentication. In the context of authentication, we identify the places where the concept of time is needed, and describe the ways that timeliness of authentication protocols can be achieved.
This paper presents an abstract formal framework for authentication using the standardised formal description technique LOTOS. The purpose of this framework is to investigate the abstract definition of authentication in a standardised formal language and to illustrate how to put some recent standardisation activities on a formal basis. Two authentication protocols are specified as examples of how...
This paper discusses the use of time in distributed authentication. Our first objective is to give reasons for the provision of authentication protocols whose correctness depends on the correct generation of timestamps. Our second objective is to explain that this proposal is not, at least theoretically, as insecure as it first seems to be. The conclusion of this paper motivated our current effort...
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