Next Article in Journal
Study on the Allocation of a Rescue Base in the Arctic
Next Article in Special Issue
The Root Extraction Problem for Generic Braids
Previous Article in Journal
Learning System for Japanese Kanji Calligraphy with Computerized Supervision
Previous Article in Special Issue
A Computational Approach to Verbal Width for Engel Words in Alternating Groups

The Cracking of WalnutDSA: A Survey

MACIMTE, U. Rey Juan Carlos, 28933 Móstoles, Spain
BBVA Next Technologies, 28050 Madrid, Spain
Author to whom correspondence should be addressed.
Symmetry 2019, 11(9), 1072;
Received: 8 July 2019 / Revised: 19 August 2019 / Accepted: 20 August 2019 / Published: 23 August 2019
(This article belongs to the Special Issue Interactions between Group Theory, Symmetry and Cryptology)
This paper reports on the Walnut Digital Signature Algorithm (WalnutDSA), which is an asymmetric signature scheme recently presented for standardization at the NIST call for post-quantum cryptographic constructions. WalnutDSA is a group theoretical construction, the security of which relies on the hardness of certain problems related to an action of a braid group on a finite set. In spite of originally resisting the typical attacks succeeding against this kind of construction, soon different loopholes were identified rendering the proposal insecure (and finally, resulting in it being excluded from Round 2 of the NIST competition). Some of these attacks are related to the well-structured and symmetric masking of certain secret elements during the signing process. We explain the design principles behind this proposal and survey the main attack strategies that have succeeded, contradicting its claimed security properties, as well as the recently-proposed ideas aimed at overcoming these issues. View Full-Text
Keywords: WalnutDSA; digital signatures; post-quantum cryptography; cryptanalysis WalnutDSA; digital signatures; post-quantum cryptography; cryptanalysis
MDPI and ACS Style

Escribano Pablos, J.I.; González Vasco, M.I.; Marriaga, M.E.; Pérez del Pozo, Á.L. The Cracking of WalnutDSA: A Survey. Symmetry 2019, 11, 1072.

AMA Style

Escribano Pablos JI, González Vasco MI, Marriaga ME, Pérez del Pozo ÁL. The Cracking of WalnutDSA: A Survey. Symmetry. 2019; 11(9):1072.

Chicago/Turabian Style

Escribano Pablos, José I., María I. González Vasco, Misael E. Marriaga, and Ángel L. Pérez del Pozo 2019. "The Cracking of WalnutDSA: A Survey" Symmetry 11, no. 9: 1072.

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop