Password-authenticated key exchange (PAKE) schemes are cryptographic schemes for securely establishing a shared session key between a client and a server communicating over an insecure channel by using a low-entropy password. In this paper, we propose a PAKE based on SIDH, where the password is used to derive a torsion points obfuscator independent of ephemeral keys. We analyze its security and prove that it is secure in the Bellare-Pointcheval-Rogaway (BPR) model, assuming the hardness of the supersingular isogeny computational Diffie-Hellman (SI-CDH) problem.
CITATION STYLE
Prabowo, T. F., & Tan, C. H. (2023). Provably Secure Password-Authenticated Key Exchange Based on SIDH. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 13720 LNCS, pp. 16–28). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-3-031-25659-2_2
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