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Post-Quantum Anonymous One-Sided Authenticated Key Exchange without Random Oracles

Ren ISHIBASHI, Kazuki YONEYAMA

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Summary :

Authenticated Key Exchange (AKE) is a cryptographic protocol to share a common session key among multiple parties. Usually, PKI-based AKE schemes are designed to guarantee secrecy of the session key and mutual authentication. However, in practice, there are many cases where mutual authentication is undesirable such as in anonymous networks like Tor and Riffle, or difficult to achieve due to the certificate management at the user level such as the Internet. Goldberg et al. formulated a model of anonymous one-sided AKE which guarantees the anonymity of the client by allowing only the client to authenticate the server, and proposed a concrete scheme. However, existing anonymous one-sided AKE schemes are only known to be secure in the random oracle model. In this paper, we propose generic constructions of anonymous one-sided AKE in the random oracle model and in the standard model, respectively. Our constructions allow us to construct the first post-quantum anonymous one-sided AKE scheme from isogenies in the standard model.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E106-A No.9 pp.1141-1163
Publication Date
2023/09/01
Publicized
2023/03/13
Online ISSN
1745-1337
DOI
10.1587/transfun.2022DMP0001
Type of Manuscript
Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category
Cryptography and Information Security

Authors

Ren ISHIBASHI
  Ibaraki University
Kazuki YONEYAMA
  Ibaraki University

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