Strengthening the Key Schedule of the AES

Authors:
Lauren May;Matt Henricksen;William Millan;Gary Carter;Ed Dawson
Affiliations:
-;-;-;-;-
Venue:
ACISP '02 Proceedings of the 7th Australian Conference on Information Security and Privacy
Year:
2002

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Abstract

In this paper we present practical guidelines for designing secure block cipher key schedules. In particular we analyse the AES key schedule and discuss its security properties both from a theoretical viewpoint, and in relation to published attacks exploiting weaknesses in its key schedule. We then propose and analyse an efficient and more secure key schedule.