Cryptology ePrint Archive: Report 2020/1215

Differential analysis of the ZUC-256 initialisation

Steve Babbage and Alexander Maximov

Abstract: This short report contains results of a brief cryptanalysis of the initialisation phase of ZUC-256. We find IV differentials that persist for 26 of the 33 initialisation rounds, and Key differentials that persist for 28 of the 33 rounds.

Category / Keywords: secret-key cryptography / 3GPP, 5G, ZUC-256

Date: received 3 Oct 2020, last revised 3 Oct 2020

Contact author: steve babbage at vodafone com,alexander maximov@ericsson com

Available format(s): PDF | BibTeX Citation

Version: 20201006:094221 (All versions of this report)

Short URL: ia.cr/2020/1215