A new class of single cycle t-functions

Authors:
Jin Hong;Dong Hoon Lee;Yongjin Yeom;Daewan Han
Affiliations:
National Security Research Institute, Daejeon, Korea;National Security Research Institute, Daejeon, Korea;National Security Research Institute, Daejeon, Korea;National Security Research Institute, Daejeon, Korea
Venue:
FSE'05 Proceedings of the 12th international conference on Fast Software Encryption
Year:
2005

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Abstract

T-function is a relatively new cryptographic building block suitable for streamciphers. It has the potential of becoming a substitute for LFSRs, and those that correspond to maximum length LFSRs are called single cycle T-functions. We present a family of single cycle T-functions, previously unknown. An attempt at building a hardware oriented streamcipher based on this new T-function is given.