Fast Software Encryption, FSE 1999 : 6th International Workshop, FSE '99, Rome, Italy, March 24-26,1999. Proceedings (Lecture Notes in Computer Science Vol.1636) (1999. VIII, 317 p. 23,5 cm)

TheFastSoftwareEncryptionWorkshop1999isthesixthinaseriesofworkshops startinginCambridgeinDecember1993. TheworkshopwasorganizedbyGeneralChairWilliamWolfowicz,Fon- zioneU. Bordoni,andProgrammeChairLarsKnudsen,UniversityofBergen, Norway,incooperationwithSecurteam,asfaraslocalarrangementswerec- cerned. TheworkshopwasheldMarch24-26,1999inRome,Italy. Theworkshopconcentratedonallaspectsoffastsecretkeyciphers,inc- dingthedesignandcryptanalysisofblockandstreamciphers,aswellashash functions. Therewere51submissions,allofthemsubmittedelectronically. Ones- missionwaslaterwithdrawnbytheauthors,and22paperswereselectedfor presentation. Allsubmissionswerecarefullyreviewedbyatleast4committee members. Attheworkshop,preliminaryversionsofall22papersweredistri- tedtoallattendees. Aftertheworkshoptherewasa nalreviewingprocesswith additionalcommentstotheauthors. Ithasbeenachallengeformetochairthecommitteeofthisworkshop,andit isapleasuretothankallthemembersoftheprogrammecommitteefortheirhard work. Thecommitteethisyearconsistedof,inalphabeticorder,RossAnd- son(Cambridge,UK),EliBiham(Technion,Israel),DonCoppersmith(IBM, USA), Cunsheng Ding (Singapore), Dieter Gollmann (Microsoft, UK), James Massey (Denmark), Mitsuru Matsui (Mitsubishi, Japan), Bart Preneel (K. U. Leuven, Belgium), Bruce Schneier (Counterpane, USA), and Serge Vaudenay (ENS,France). ItisagreatpleasuretothankWilliamWolfowiczfororganisingtheworkshop. Also,itisapleasuretothankSecurteamforthelogisticsandTelsyandSunfor supportingtheconference. Finally,abigthankyoutoallsubmittingauthorsfor theircontributions,andtoallattendees(approximately165)oftheworkshop. Finally, I would like to thank Vincent Rijmen for his technical assistance in preparingtheseproceedings. April1999 LarsKnudsen TableofContents AdvancedEncryptionStandard ImprovedAnalysisofSomeSimpli edVariantsofRC6 . . . . . . . . . . . . . . . . . . . . . . . 1 S. Contini,R. L. Rivest,M. J. B. Robshaw,andY. L. Yin LinearCryptanalysisofRC5andRC6. . . . . . . . . . . . . . . . . .