Paper 2021/320
Binding BIKE errors to a key pair
Nir Drucker, Shay Gueron, and Dusan Kostic
Abstract
The KEM BIKE is a Round-3 alternative finalist in the NIST Post-Quantum Cryptography project. It uses the FO$^{\not \bot}$ transformation so that an instantiation with a decoder that has a DFR of $2^{-128}$ will make it IND-CCA secure. The current BIKE design does not bind the randomness of the ciphertexts (i.e., the error vectors) to a specific public key. We propose to change this design, although currently, there is no attack that leverages this property. This modification can be considered if BIKE is eventually standardized.
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- BIKEPost-Quantum CryptographyNISTQC-MDPC codesCiphertext Binding
- Contact author(s)
-
drucker nir @ gmail com
shay @ math haifa ac il
dusan kostic @ epfl ch - History
- 2021-03-11: received
- Short URL
- https://ia.cr/2021/320
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2021/320,
author = {Nir Drucker and Shay Gueron and Dusan Kostic},
title = {Binding BIKE errors to a key pair},
howpublished = {Cryptology ePrint Archive, Paper 2021/320},
year = {2021},
note = {\url{https://eprint.iacr.org/2021/320}},
url = {https://eprint.iacr.org/2021/320}
}
