Welcome to the resource topic for 2021/320
Title:
Binding BIKE errors to a key pair
Authors: Nir Drucker, Shay Gueron, 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.
ePrint: https://eprint.iacr.org/2021/320
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