TWO TYPES OF NEW SUBLIMINAL CHANNELS

(整期优先)网络出版时间:2004-06-16
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Twotypesofnewsubliminalchannelsareconstructedrespectivelybasedonprovablesecurepublickeycryptosystemsandidentityrecognitioninsomenetworkapplications.Researchshowsthattherearesomenewcharacteristicswhichareinfavorofcovertcommunicationinourconstructions.Itishardtomakethesubliminalchannelsfree,andthechannelshavelargecapacityandhightransmissionefficiency.Wealsopointoutthatthehardnesstomakethechannelsfreeisdisadvantageoustothewardenwhotriestothwartthecovertcommunication.