On forward secrecy in one-round key exchange
Boyd, Colin & Gonzalez Nieto, Juan M. (2011) On forward secrecy in one-round key exchange. In Lecture Notes in Computer Science: Cryptography and Coding, Springer Berlin / Heidelberg, Oxford, UK, pp. 451-468.
Most one-round key exchange protocols provide only weak forward secrecy at best.
Furthermore, one-round protocols with strong forward secrecy often break badly when faced with an adversary who can obtain ephemeral keys. We provide a characterisation of how strong forward secrecy can be achieved in one-round key exchange. Moreover, we show that protocols exist which provide strong forward secrecy and remain secure with weak forward secrecy even when the adversary is allowed to obtain ephemeral keys. We provide a compiler to achieve this for any existing secure protocol with weak forward secrecy.
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|Item Type:||Conference Paper|
|Keywords:||key exchange, forward secrecy|
|Subjects:||Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > COMPUTER SOFTWARE (080300) > Computer System Security (080303)|
Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > DATA FORMAT (080400) > Data Encryption (080402)
|Divisions:||Past > Schools > Computer Science|
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Institutes > Information Security Institute
|Copyright Owner:||Copyright 2011 Springer|
|Copyright Statement:||This is the author-version of the work. Conference proceedings published, by Springer Verlag, will be available via SpringerLink. http://www.springerlink.com|
|Deposited On:||29 Nov 2011 13:51|
|Last Modified:||25 Jan 2012 09:27|
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