Towards modelling perfect forward secrecy in two-message authenticated key exchange under ephemeral-key revelation
| Autor: | Wu Yang, Lingyun Zhu, Daigu Zhang, Zheng Yang |
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| Rok vydání: | 2015 |
| Předmět: |
Class (set theory)
Computer Networks and Communications Computer science Contrast (statistics) Computer security model Computer security computer.software_genre Random oracle Authenticated Key Exchange Transformation (function) Forward secrecy Key (cryptography) Mathematical economics computer Information Systems |
| Zdroj: | Security and Communication Networks. 8:3356-3371 |
| ISSN: | 1939-0114 |
| DOI: | 10.1002/sec.1263 |
| Popis: | We examine the recently introduced CF and CF-perfect forward secrecy PFS models for two-message authenticated key exchange TMAKE by Cremers et al., where the difference between CF and CF-PFS model is that the CF formulates the weak PFS wPFS, whereas the CF-PFS formulates the PFS. The CF model is claimed by Cremers et al. to be strictly stronger the previous extended Canetti-Krawczyk eCK model. However, we notice that the implication relations among CF, CF-PFS, eCK and eCK-PFS model have not been completely studied. Based on TMAKE, we particularly show that CF model and eCK model imply each other under random oracle model. Moreover, we provide a new result on the generic security strengthening transformation compiler for building CF-PFS-secure TMAKE protocols. In contrast to a previous work, we show that it is possible to apply the transformation to all CF-secure AKE protocols including all eCK-secure TMAKE protocols in the random oracle model, without restricting to a small specific class of Diffie-Hellman key based protocols. Copyright © 2015 John Wiley & Sons, Ltd. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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