International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Guillermo Pascual-Perez

Publications

Year
Venue
Title
2018
PKC
A Practical Cryptanalysis of WalnutDSA$^{\text {TM}}$TM
We present a practical cryptanalysis of WalnutDSA, a digital signature algorithm trademarked by SecureRF. WalnutDSA uses techniques from permutation groups, matrix groups and braid groups, and is designed to provide post-quantum security in lightweight IoT device contexts. The attack given in this paper bypasses the E-Multiplication$$^{\text {TM}}$$TM and cloaked conjugacy search problems at the heart of the algorithm and forges signatures for arbitrary messages in approximately two minutes. We also discuss potential countermeasures to the attack.