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Paper 2018/886
An Isogeny-Based Password-Authenticated Key Establishment Protocol
Oleg Taraskin and Vladimir Soukharev and David Jao and Jason LeGrow
Abstract
Password authenticated key establishment (PAKE) is a cryptographic primitive that allows two parties who share a low-entropy secret (a password) to securely establish cryptographic keys in the absence of public key infrastructure. We present the first quantum-resistant password-authenticated key exchange scheme based on supersingular elliptic curve isogenies. The scheme is built upon supersingular isogeny Diffie-Hellman, and uses the password to generate functions which obscure the auxiliary points used in the computation. We include a detailed security proof based on a number of reasonable computational problems on supersingular elliptic curves.
Metadata
- Available format(s)
- Category
- Secret-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- isogeny-based cryptographypassword-authenticated key establishment
- Contact author(s)
- jlegrow @ uwaterloo ca
- History
- 2020-01-14: revised
- 2018-09-23: received
- See all versions
- Short URL
- https://ia.cr/2018/886
- License
-
CC BY