Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


A New Conditional Cube Attack on Reduced-Round Ascon-128a in a Nonce-misuse Setting

May 10, 2022


Donghoon Chang - Strativia-NIST


Ascon is one of the finalists of the National Institute of Standards and Technology (NIST) lightweight cryptography standardization process. The Ascon family is a permutation-based design that uses monkeyDuplex construction with extra key additions during initialization and finalization to prevent key-recovery and forgery attacks even after the internal state is recovered by an attacker during the encryption. The family includes three AEAD variants; Ascon-128 (primary), Ascon-128a, and Ascon-80pq. The Ascon family received a significant amount of third party analysis. 

Presented at

LWC Workshop 2022

Event Details



Related Topics

Security and Privacy: cryptography

Created May 05, 2022, Updated May 11, 2022