Table Of Content

Disappearing Cryptography Information Hiding: Steganography & Watermarking Third Edition Peter Wayner (cid:36)(cid:80)(cid:86)(cid:87)(cid:72)(cid:85)(cid:71)(cid:68)(cid:80)(cid:3)(cid:135)(cid:3)(cid:37)(cid:82)(cid:86)(cid:87)(cid:82)(cid:81)(cid:3)(cid:135)(cid:3)(cid:43)(cid:72)(cid:76)(cid:71)(cid:72)(cid:79)(cid:69)(cid:72)(cid:85)(cid:74)(cid:3)(cid:135)(cid:3)(cid:47)(cid:82)(cid:81)(cid:71)(cid:82)(cid:81) (cid:49)(cid:72)(cid:90)(cid:3)(cid:60)(cid:82)(cid:85)(cid:78)(cid:3)(cid:135)(cid:3)(cid:50)(cid:91)(cid:73)(cid:82)(cid:85)(cid:71)(cid:3)(cid:135)(cid:3)(cid:51)(cid:68)(cid:85)(cid:76)(cid:86)(cid:3)(cid:135)(cid:3)(cid:54)(cid:68)(cid:81)(cid:3)(cid:39)(cid:76)(cid:72)(cid:74)(cid:82) (cid:54)(cid:68)(cid:81)(cid:3)(cid:41)(cid:85)(cid:68)(cid:81)(cid:70)(cid:76)(cid:86)(cid:70)(cid:82)(cid:3)(cid:135)(cid:3)(cid:54)(cid:76)(cid:81)(cid:74)(cid:68)(cid:83)(cid:82)(cid:85)(cid:72)(cid:3)(cid:135)(cid:3)(cid:54)(cid:92)(cid:71)(cid:81)(cid:72)(cid:92)(cid:3)(cid:135)(cid:3)(cid:55)(cid:82)(cid:78)(cid:92)(cid:82) Morgan Kaufmann is an imprint of Elsevier Morgan Kaufmann Publishers is an imprint of Elsevier. 30 Corporate Drive, Suite 400 Burlington, MA 01803, USA This book is printed on acid-free paper. Copyright © 2009 by Peter Wayner. Published by Elsevier Inc. Designations used by companies to distinguish their products are often claimed as trademarks or registered trademarks. In all instances in which Morgan Kaufmann Publishers is aware of a claim, the product names appear in initial capital or all capital letters. Readers, however, should contact the appropriate companies for more complete information regarding trademarks and registration. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means electronic, mechanical, photocopying, scanning, or otherwise without prior written permission of the publisher. Permissions may be sought directly from Elsevier(cid:182)s Science & Technology Rights Department in Oxford, UK: phone: (44) 1865 843830, fax: (44) 1865 853333, e-mail: [email protected]. You may also complete your request online via the Elsevier homepage (http://elsevier.com(cid:12)(cid:15)(cid:3)(cid:69)(cid:92)(cid:3)(cid:86)(cid:72)(cid:79)(cid:72)(cid:70)(cid:87)(cid:76)(cid:81)(cid:74)(cid:3)(cid:179)(cid:54)(cid:88)(cid:83)(cid:83)(cid:82)(cid:85)(cid:87)(cid:3)(cid:9)(cid:3)(cid:38)(cid:82)(cid:81)(cid:87)(cid:68)(cid:70)(cid:87)(cid:180)(cid:3)(cid:87)(cid:75)(cid:72)(cid:81)(cid:3)(cid:179)(cid:38)(cid:82)(cid:83)(cid:92)(cid:85)(cid:76)(cid:74)(cid:75)(cid:87) and (cid:51)(cid:72)(cid:85)(cid:80)(cid:76)(cid:86)(cid:86)(cid:76)(cid:82)(cid:81)(cid:180)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:87)(cid:75)(cid:72)(cid:81)(cid:3)(cid:179)(cid:50)(cid:69)(cid:87)(cid:68)(cid:76)(cid:81)(cid:76)(cid:81)(cid:74)(cid:3)(cid:51)(cid:72)(cid:85)(cid:80)(cid:76)(cid:86)(cid:86)(cid:76)(cid:82)(cid:81)(cid:86)(cid:17)(cid:180) Library of Congress Cataloging-in-Publication Data Wayner, Peter, 1964- Disappearing cryptography: Information hiding: Steganography & watermarking / Peter Wayner. (cid:178) 3rd ed. p. cm. Includes bibliographical references and index. ISBN 978-0-12-374479-1 (alk. paper) 1. Computer networks(cid:178)Security measures. 2. Cryptography. 3. Internet. I. Title. TK5105.59.W39 2009 005.8'2(cid:178)dc22 2008044800 For information on all Morgan Kaufmann publications, visit our Web site at www.mkp.com or www.books.elsevier.com Printed in the United States of America 8 9 10 11 12 10 9 8 7 6 5 4 3 2 1 Contents AbouttheAuthor xi Preface xiii BookNotes xv 0.1 NotesOntheThirdEdition . . . . . . . . . . . . . . . . . 2 0.2 NotesOntheSecondEdition. . . . . . . . . . . . . . . . 3 1 FramingInformation 5 1.0.1 ReasonsforSecrecy . . . . . . . . . . . . . . . . 7 1.0.2 HowItIsDone . . . . . . . . . . . . . . . . . . . 9 1.0.3 HowSteganographyIsUsed . . . . . . . . . . . . 11 1.0.4 AttacksonSteganography . . . . . . . . . . . . . 12 1.1 AddingContext . . . . . . . . . . . . . . . . . . . . . . . 16 2 Encryption 19 2.1 PureWhite . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2.2 EncryptionandWhiteNoise . . . . . . . . . . . . . . . . 20 2.2.1 DESandModernCiphers . . . . . . . . . . . . . 24 2.2.2 Public-KeyEncryption . . . . . . . . . . . . . . . 28 2.2.3 HowRandomIstheNoise? . . . . . . . . . . . . 29 2.3 MeasuringandEncryptingInformation . . . . . . . . . 31 2.3.1 RSAEncryption . . . . . . . . . . . . . . . . . . . 33 2.4 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 3 ErrorCorrection 37 3.1 ClosebutNoCigar . . . . . . . . . . . . . . . . . . . . . 37 3.2 CorrectingErrors . . . . . . . . . . . . . . . . . . . . . . 37 3.2.1 ErrorCorrectionandWhiteNoise . . . . . . . . 44 3.2.2 ErrorCorrectionandSecretSharing . . . . . . . 45 3.3 ConstructingError-CorrectingCodes . . . . . . . . . . . 46 3.3.1 PeriodicCodes . . . . . . . . . . . . . . . . . . . 49 iii iv CONTENTS 3.4 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 4 SecretSharing 55 4.1 TwooutofThreeMusketeers. . . . . . . . . . . . . . . . 55 4.2 SplittingUpSecrets . . . . . . . . . . . . . . . . . . . . . 56 4.2.1 RequiringAllParts . . . . . . . . . . . . . . . . . 57 4.2.2 LettingPartsSlide . . . . . . . . . . . . . . . . . 59 4.2.3 AMoreEfficientMethod . . . . . . . . . . . . . . 61 4.2.4 ProvidingDeniability . . . . . . . . . . . . . . . . 62 4.3 BuildingSecret-SharingSchemes . . . . . . . . . . . . . 63 4.3.1 MakingSomeMoreEqual . . . . . . . . . . . . . 65 4.4 Public-KeySecretSharing . . . . . . . . . . . . . . . . . 66 4.5 SteganographicFileSystemsandSecretSharing . . . . 67 4.6 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 5 Compression 73 5.1 TelevisionListing . . . . . . . . . . . . . . . . . . . . . . 73 5.2 PatternsandCompression . . . . . . . . . . . . . . . . . 74 5.2.1 HuffmanCoding . . . . . . . . . . . . . . . . . . 77 5.3 BuildingCompressionAlgorithms. . . . . . . . . . . . . 79 5.3.1 HuffmanCompression . . . . . . . . . . . . . . . 80 5.3.2 DictionaryCompression . . . . . . . . . . . . . . 82 5.3.3 JPEGCompression . . . . . . . . . . . . . . . . . 83 5.3.4 GZSteg . . . . . . . . . . . . . . . . . . . . . . . . 84 5.4 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 6 BasicMimicry 87 6.1 ReadingbetweentheLines . . . . . . . . . . . . . . . . . 87 6.2 RunninginReverse . . . . . . . . . . . . . . . . . . . . . 88 6.2.1 ChoosingtheNextLetter . . . . . . . . . . . . . 92 6.3 ImplementingtheMimicry. . . . . . . . . . . . . . . . . 94 6.3.1 GoosingwithExtraData . . . . . . . . . . . . . . 97 6.3.2 RegularMimicryandImages . . . . . . . . . . . 99 6.4 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 7 GrammarsandMimicry 103 7.1 EvolutionofEverydayThings . . . . . . . . . . . . . . . 103 7.2 UsingGrammarforMimicry . . . . . . . . . . . . . . . . 105 7.2.1 Context-FreeGrammars . . . . . . . . . . . . . . 105 7.2.2 ParsingandGoingBack . . . . . . . . . . . . . . 109 7.2.3 HowGoodIsIt? . . . . . . . . . . . . . . . . . . . 111 7.3 CreatingGrammar-BasedMimicry . . . . . . . . . . . . 114 7.3.1 ParsingtheOutput . . . . . . . . . . . . . . . . . 117 7.3.2 SuggestionsforBuildingGrammars . . . . . . . 118 CONTENTS v 7.3.3 ScrambledGrammars . . . . . . . . . . . . . . . 119 7.3.4 AssessingtheTheoreticalSecurityofMimicry . 128 7.3.5 EfficientMimicry-BasedCodes . . . . . . . . . . 131 7.4 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 8 TuringandReverse 137 8.1 Doggie’sLittleGetAlong . . . . . . . . . . . . . . . . . . 137 8.2 RunningBackward . . . . . . . . . . . . . . . . . . . . . 138 8.2.1 ReversingGears . . . . . . . . . . . . . . . . . . . 142 8.3 BuildingaReversibleMachine . . . . . . . . . . . . . . . 147 8.3.1 ReversibleTuringMachines . . . . . . . . . . . . 148 8.3.2 ReversibleGrammarGenerators . . . . . . . . . 149 8.3.3 TheReversibleGrammarMachine . . . . . . . . 152 8.4 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 9 LifeintheNoise 157 9.1 Boy-ZsinNoizy,Idaho . . . . . . . . . . . . . . . . . . . 157 9.2 HidingintheNoise . . . . . . . . . . . . . . . . . . . . . 159 9.2.1 ProblemswiththeNoise . . . . . . . . . . . . . . 160 9.2.2 Goodnoise? . . . . . . . . . . . . . . . . . . . . . 161 9.2.3 IndependenceProblems . . . . . . . . . . . . . . 163 9.2.4 FileFormatGrief . . . . . . . . . . . . . . . . . . 165 9.2.5 Deniability . . . . . . . . . . . . . . . . . . . . . 168 9.2.6 FindingEdges . . . . . . . . . . . . . . . . . . . . 170 9.3 BitTwiddling . . . . . . . . . . . . . . . . . . . . . . . . . 170 9.3.1 WorkingwithGIFs . . . . . . . . . . . . . . . . . 170 9.3.2 SmarterColorReduction . . . . . . . . . . . . . 175 9.3.3 SoundFiles . . . . . . . . . . . . . . . . . . . . . 178 9.4 RandomWalksandSubsets . . . . . . . . . . . . . . . . 178 9.4.1 EmptyDiskSpace . . . . . . . . . . . . . . . . . 182 9.5 PuttingJPEGtoUse . . . . . . . . . . . . . . . . . . . . . 183 9.5.1 HidingInformationinJPEGFiles . . . . . . . . . 186 9.5.2 Outguess . . . . . . . . . . . . . . . . . . . . . . . 188 9.5.3 F4andF5 . . . . . . . . . . . . . . . . . . . . . . 189 9.6 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 191 10 AnonymousRemailers 193 10.1 Dr.AnontoYou . . . . . . . . . . . . . . . . . . . . . . . 193 10.2 AnonymousRemailers . . . . . . . . . . . . . . . . . . . 195 10.2.1 Enhancements . . . . . . . . . . . . . . . . . . . 196 10.2.2 UsingRemailers . . . . . . . . . . . . . . . . . . 197 10.2.3 UsingPrivateIdaho . . . . . . . . . . . . . . . . 199 10.2.4 WebRemailers . . . . . . . . . . . . . . . . . . . 200 10.3 RemailerGuts . . . . . . . . . . . . . . . . . . . . . . . . 200 vi CONTENTS 10.3.1 OtherRemailerPackages . . . . . . . . . . . . . 204 10.3.2 SplittingPaths . . . . . . . . . . . . . . . . . . . . 205 10.4 AnonymousNetworks . . . . . . . . . . . . . . . . . . . 207 10.4.1 FreedomNetwork . . . . . . . . . . . . . . . . . 208 10.4.2 PipeNet . . . . . . . . . . . . . . . . . . . . . . . 209 10.4.3 Crowds . . . . . . . . . . . . . . . . . . . . . . . . 209 10.4.4 Freenet . . . . . . . . . . . . . . . . . . . . . . . . 210 10.4.5 OceanStore . . . . . . . . . . . . . . . . . . . . . 212 10.5 Longtermstorage . . . . . . . . . . . . . . . . . . . . . . 212 10.5.1 EternityServer . . . . . . . . . . . . . . . . . . . 213 10.5.2 Entanglement . . . . . . . . . . . . . . . . . . . . 214 10.6 Publius . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 10.7 OnionRouting . . . . . . . . . . . . . . . . . . . . . . . . 217 10.7.1 EstablishingaCircuit . . . . . . . . . . . . . . . . 220 10.7.2 MoreIndirection:HiddenServices . . . . . . . . 221 10.7.3 StoppingBadUsers . . . . . . . . . . . . . . . . . 225 10.8 AnonymousAuctionProtocols. . . . . . . . . . . . . . . 227 10.9 TheFuture . . . . . . . . . . . . . . . . . . . . . . . . . . 228 10.10Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 229 11 SecretBroadcasts 231 11.1 TableTalk . . . . . . . . . . . . . . . . . . . . . . . . . . . 231 11.2 SecretSenders . . . . . . . . . . . . . . . . . . . . . . . . 231 11.3 CreatingaDCNet . . . . . . . . . . . . . . . . . . . . . . 235 11.3.1 CheatingDCNets . . . . . . . . . . . . . . . . . . 237 11.4 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 238 12 Keys 241 12.1 TheKeyVision . . . . . . . . . . . . . . . . . . . . . . . . 241 12.2 ExtendingControl . . . . . . . . . . . . . . . . . . . . . . 242 12.3 SigningAlgorithms . . . . . . . . . . . . . . . . . . . . . 244 12.4 Public-KeyAlgorithms . . . . . . . . . . . . . . . . . . . 245 12.4.1 LeveragingPublic-KeyCryptography . . . . . . 246 12.4.2 ConstrainingHardProblems . . . . . . . . . . . 246 12.4.3 UsingMatrixMultiplication . . . . . . . . . . . . 249 12.4.4 RemovingParts . . . . . . . . . . . . . . . . . . . 251 12.5 ZeroKnowledgeApproaches . . . . . . . . . . . . . . . . 252 12.5.1 DiscreteLogsforProofs . . . . . . . . . . . . . . 256 12.6 CollusionControl . . . . . . . . . . . . . . . . . . . . . . 258 12.7 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 259 CONTENTS vii 13 OrderingandReordering 261 13.1 Top10ReasonsWhyTop10ListsFail . . . . . . . . . . . 261 13.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 262 13.3 StrengthAgainstScrambling . . . . . . . . . . . . . . . . 263 13.4 InvariantForms . . . . . . . . . . . . . . . . . . . . . . . 265 13.5 CanonicalForms . . . . . . . . . . . . . . . . . . . . . . 265 13.6 PackinginMultipleMessages . . . . . . . . . . . . . . . 266 13.7 SortingtoHideInformation . . . . . . . . . . . . . . . . 267 13.8 WordScrambling . . . . . . . . . . . . . . . . . . . . . . 269 13.9 AddingExtraPackets . . . . . . . . . . . . . . . . . . . . 270 13.10PortKnocking . . . . . . . . . . . . . . . . . . . . . . . . 271 13.10.1EnhancingPortKnocking . . . . . . . . . . . . . 272 13.11ContinuousUseandJamming . . . . . . . . . . . . . . . 274 13.12Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 275 14 Spreading 277 14.1 ANewJob. . . . . . . . . . . . . . . . . . . . . . . . . . . 277 14.2 SpreadingtheInformation . . . . . . . . . . . . . . . . . 279 14.3 GoingDigital . . . . . . . . . . . . . . . . . . . . . . . . . 283 14.3.1 Anexample . . . . . . . . . . . . . . . . . . . . . 284 14.3.2 Synchronization . . . . . . . . . . . . . . . . . . 287 14.3.3 StrengtheningtheSystem . . . . . . . . . . . . . 288 14.3.4 PackingMultipleMessages . . . . . . . . . . . . 289 14.4 ComparativeBlocks . . . . . . . . . . . . . . . . . . . . . 290 14.4.1 MinimizingQuantizationErrors . . . . . . . . . 291 14.4.2 PerturbedQuantization . . . . . . . . . . . . . . 292 14.5 FastFourierSolutions . . . . . . . . . . . . . . . . . . . . 294 14.5.1 SomeBriefCalculus . . . . . . . . . . . . . . . . 296 14.6 TheFastFourierTransform . . . . . . . . . . . . . . . . 297 14.7 HidingInformationwithFFTsandDCTs . . . . . . . . . 299 14.7.1 TweakingaNumberofCoefficients . . . . . . . 301 14.7.2 RemovingtheOriginalfromtheDetectionPro- cess . . . . . . . . . . . . . . . . . . . . . . . . . . 306 14.7.3 TemperingtheWake . . . . . . . . . . . . . . . . 306 14.8 Wavelets . . . . . . . . . . . . . . . . . . . . . . . . . . . 307 14.9 Modifications . . . . . . . . . . . . . . . . . . . . . . . . 309 14.10Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 311 15 SyntheticWorlds 313 15.1 SlamDunks . . . . . . . . . . . . . . . . . . . . . . . . . 313 15.2 CreatedWorlds . . . . . . . . . . . . . . . . . . . . . . . 314 15.3 TextPositionEncodingandOCR . . . . . . . . . . . . . 316 15.3.1 Positioning . . . . . . . . . . . . . . . . . . . . . 317 15.3.2 MandelStegandSecrets . . . . . . . . . . . . . . 319 viii CONTENTS 15.4 EchoHiding . . . . . . . . . . . . . . . . . . . . . . . . . 320 15.5 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 321 16 Watermarks 323 16.1 APatentforWatermarkingHumans. . . . . . . . . . . . 323 16.2 TaggingDigitalDocuments . . . . . . . . . . . . . . . . 324 16.2.1 AWatermarkingTaxonomy . . . . . . . . . . . . 326 16.3 ABasicWatermark . . . . . . . . . . . . . . . . . . . . . 329 16.3.1 ChoosingtheCoefficients . . . . . . . . . . . . . 331 16.4 AnAveragingWatermark . . . . . . . . . . . . . . . . . . 331 16.4.1 EffectsofDistortion . . . . . . . . . . . . . . . . 333 16.4.2 BirthdayMarks . . . . . . . . . . . . . . . . . . . 333 16.5 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 335 17 Steganalysis 337 17.1 CodeWords . . . . . . . . . . . . . . . . . . . . . . . . . 337 17.2 FindingHiddenMessages . . . . . . . . . . . . . . . . . 337 17.3 TypicalApproaches . . . . . . . . . . . . . . . . . . . . . 339 17.4 VisualandAuralAttacks . . . . . . . . . . . . . . . . . . 340 17.4.1 VisualAttacks . . . . . . . . . . . . . . . . . . . . 340 17.4.2 AuralAttacks . . . . . . . . . . . . . . . . . . . . 343 17.5 StructuralAttacks . . . . . . . . . . . . . . . . . . . . . . 344 17.5.1 InterpolatedImages . . . . . . . . . . . . . . . . 346 17.6 StatisticalAttacks . . . . . . . . . . . . . . . . . . . . . . 348 17.6.1 WaveletStatistics . . . . . . . . . . . . . . . . . . 350 17.6.2 Re-alignment . . . . . . . . . . . . . . . . . . . . 351 17.7 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 351 18 Obfuscation 355 18.1 Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . 355 18.2 CodeRearrangement . . . . . . . . . . . . . . . . . . . . 356 18.3 CompilingIntelligence . . . . . . . . . . . . . . . . . . . 357 18.4 RealTools. . . . . . . . . . . . . . . . . . . . . . . . . . . 362 18.5 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 363 19 Synchronization 365 19.1 StealingBaseball’sSigns . . . . . . . . . . . . . . . . . . 365 19.2 GettingInSync. . . . . . . . . . . . . . . . . . . . . . . . 366 19.3 ExtendingOtherTools . . . . . . . . . . . . . . . . . . . 367 19.4 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 370 CONTENTS ix 20 TranslucentDatabases 373 20.1 MissedConnections. . . . . . . . . . . . . . . . . . . . . 373 20.2 HidingInDatabases. . . . . . . . . . . . . . . . . . . . . 373 20.2.1 One-wayFunctions . . . . . . . . . . . . . . . . 375 20.3 UsingStrongOne-WayFunctions . . . . . . . . . . . . . 376 20.3.1 One-WayFunctionsandSteganography . . . . . 376 20.4 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 377 21 PlainSight 379 21.1 Laughtracks . . . . . . . . . . . . . . . . . . . . . . . . . 379 21.2 HidingintheOpen . . . . . . . . . . . . . . . . . . . . . 380 21.3 OtherFormats . . . . . . . . . . . . . . . . . . . . . . . . 381 21.3.1 Microformats . . . . . . . . . . . . . . . . . . . . 383 21.3.2 Rice’sTheorem . . . . . . . . . . . . . . . . . . . 384 21.4 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 385 22 Coda 387 A Software 391 A.1 CommercialPackages . . . . . . . . . . . . . . . . . . . . 391 A.2 OpenPackages . . . . . . . . . . . . . . . . . . . . . . . . 392 A.3 SteganalysisSoftware . . . . . . . . . . . . . . . . . . . . 397

ebook img

Disappearing Cryptography: Information Hiding: Steganography and Watermarking PDF

457 Pages·2008·4.965 MB·English
by  Peter Wayner
#
Save to my drive
Quick download
Download

Download Disappearing Cryptography: Information Hiding: Steganography and Watermarking PDF Free - Full Version

by Peter Wayner| 2008| 457 pages| 4.965| English

Download Disappearing Cryptography: Information Hiding: Steganography and Watermarking by Peter Wayner in PDF format completely FREE. No registration required, no payment needed. Get instant access to this valuable resource on PDFdrive.to!

Free Download PDF

About Disappearing Cryptography: Information Hiding: Steganography and Watermarking

No description available for this book.

Detailed Information

Author:Peter Wayner
Publication Year:2008
ISBN:9780123744791
Pages:457
Language:English
File Size:4.965
Format:PDF
Price:FREE
Download Free PDF

Safe & Secure Download - No registration required

Why Choose PDFdrive for Your Free Disappearing Cryptography: Information Hiding: Steganography and Watermarking Download?

  • 100% Free: No hidden fees or subscriptions required for one book every day.
  • No Registration: Immediate access is available without creating accounts for one book every day.
  • Safe and Secure: Clean downloads without malware or viruses
  • Multiple Formats: PDF, MOBI, Mpub,... optimized for all devices
  • Educational Resource: Supporting knowledge sharing and learning

Free Books Similar to Disappearing Cryptography: Information Hiding: Steganography and Watermarking

Frequently Asked Questions

Is it really free to download Disappearing Cryptography: Information Hiding: Steganography and Watermarking PDF?

Yes, on https://PDFdrive.to you can download Disappearing Cryptography: Information Hiding: Steganography and Watermarking by Peter Wayner completely free. We don't require any payment, subscription, or registration to access this PDF file. For 3 books every day.

How can I read Disappearing Cryptography: Information Hiding: Steganography and Watermarking on my mobile device?

After downloading Disappearing Cryptography: Information Hiding: Steganography and Watermarking PDF, you can open it with any PDF reader app on your phone or tablet. We recommend using Adobe Acrobat Reader, Apple Books, or Google Play Books for the best reading experience.

Is this the full version of Disappearing Cryptography: Information Hiding: Steganography and Watermarking?

Yes, this is the complete PDF version of Disappearing Cryptography: Information Hiding: Steganography and Watermarking by Peter Wayner. You will be able to read the entire content as in the printed version without missing any pages.

Is it legal to download Disappearing Cryptography: Information Hiding: Steganography and Watermarking PDF for free?

https://PDFdrive.to provides links to free educational resources available online. We do not store any files on our servers. Please be aware of copyright laws in your country before downloading.

The materials shared are intended for research, educational, and personal use in accordance with fair use principles.

We use cookies

We use cookies to ensure you get the best browsing experience on our website. By clicking "Accept Cookies", you agree that we can store cookies on your device in accordance with our Terms and Privacy.