�r�ѧj�����LͶ��^ޯng���G_� ]㭝y��g�.��������3 ҸpA��o��簽}ã�zЍ7���MG�^�W�������0�w3����7��������@�u�5Z L��ѧz�4�����J�^��m\? << /K [ 690 0 R ] >> 105 0 obj /Pg 51 0 R /P 738 0 R /K [ 46 ] /S /P /Type /StructElem 542 0 obj /Pg 55 0 R << /S /P endobj >> /Type /StructElem /S /P endobj 345 0 obj << << >> << << >> endobj /K [ 278 0 R ] /K [ 112 0 R ] /Pg 51 0 R /K [ 632 0 R ] >> /S /P Cryptography is the art and science of making secure communication systems. /Type /StructElem /K [ 35 ] /K [ 30 ] /S /TD /K 29 /S /TR /Type /StructElem /K [ 130 ] /Marked true /Type /StructElem << /S /P << /Pg 55 0 R /Type /StructElem /P 437 0 R /S /P << >> /P 691 0 R << <>/Lang(en-IN)/Pages 3 0 R/StructTreeRoot 4 0 R/Metadata 1 0 R/Type/Catalog>> << /Pg 63 0 R /Pg 57 0 R /K [ 169 0 R ] 102 0 obj endobj endobj /Type /StructElem endobj /K 71 550 0 obj << /Pg 55 0 R /K 11 /Pg 55 0 R endobj >> /K [ 206 0 R ] << It involves the substitution of one letter with another based on a translation table. endobj 276 0 obj /K [ 42 ] /S /TR /K [ 48 ] /Pg 51 0 R 844 0 obj >> endobj 2 Outline Symmetric Encryption Substitution Techniques Transposition Techniques Steganography. endobj 675 0 obj >> /Pg 55 0 R 387 0 obj /Type /StructElem >> /Type /StructElem endobj /Type /StructElem /Type /StructElem 129 0 obj 616 0 obj /K [ 248 0 R ] /Type /StructElem 435 0 obj /Type /StructElem >> /P 327 0 R /P 141 0 R It involves the substitution of one letter with another based on a translation table. 491 0 obj << /S /L /Pg 55 0 R >> /Type /StructElem Substitution techniques map plaintext into ciphertext. << endobj /S /P /Pg 55 0 R /S /TR >> /Type /StructElem << endobj >> /K [ 110 0 R ] <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/Contents[34 0 R 35 0 R 36 0 R 37 0 R 38 0 R 39 0 R 40 0 R 41 0 R 42 0 R 43 0 R 44 0 R 45 0 R 46 0 R 47 0 R 48 0 R 49 0 R 50 0 R 51 0 R 52 0 R 53 0 R 54 0 R 55 0 R 56 0 R 57 0 R 58 0 R 59 0 R 60 0 R 61 0 R 62 0 R 63 0 R 64 0 R 65 0 R 66 0 R 67 0 R]/Group<>/Annots[68 0 R 69 0 R 70 0 R]/Type/Page/Tabs/S>> /K [ 26 ] << >> /K [ 641 0 R 643 0 R 645 0 R ] /Type /StructElem endobj /Pg 55 0 R 687 0 obj >> /Type /StructElem << endobj /Type /StructElem /P 488 0 R /S /LI /Type /StructElem << /Type /StructElem /P 531 0 R /P 434 0 R >> /K [ 11 ] 88 0 obj endobj 725 0 obj >> /P 71 0 R /Pg 55 0 R /Pg 55 0 R /P 342 0 R /S /TD /Pg 55 0 R /K 95 endobj /P 201 0 R << /S /P /Pg 3 0 R /S /LI /K [ 568 0 R 570 0 R 572 0 R ] /K [ 30 ] << ciphers: substitution and transposition. /S /TR << /S /LBody /Type /StructElem /K [ 13 ] << >> /Pg 55 0 R /Pg 3 0 R >> 888 0 obj /S /P 271 0 obj /Pg 51 0 R >> /S /TD /Pg 51 0 R /K [ 569 0 R ] >> /P 71 0 R << /Pg 57 0 R /P 363 0 R /K [ 52 ] 800 0 obj /P 537 0 R endobj >> /S /P /Type /StructElem /F9 27 0 R /P 586 0 R /Pg 57 0 R 382 0 obj endobj /Pg 55 0 R /Type /StructElem 251 0 obj /Type /StructElem endobj endobj endobj 842 0 obj /K [ 96 0 R ] endobj /K [ 118 ] /P 185 0 R /Type /StructElem This paper shows the possibility of exploiting the features of Genetic Algorithm with poly substitution methods in a linear way, to generate ASCII values of the given text and then applying conversion, transposition with the features of Cryptography. << /S /P /K 46 /Pg 51 0 R /P 71 0 R << endobj << >> /S /Span /P 151 0 R << /Pg 51 0 R /Pg 55 0 R >> /K [ 20 ] /P 531 0 R << /Pg 51 0 R /S /TD /S /P /S /L 592 0 obj /S /Span /K [ 3 ] /Pg 51 0 R /P 71 0 R /Type /StructElem 778 0 obj /S /TR /S /Span /K [ 162 ] >> /Pg 55 0 R endobj /K [ 74 ] /K [ 429 0 R 431 0 R 433 0 R ] /P 261 0 R endobj >> /Type /StructElem /Type /StructElem /K [ 184 ] /S /TD /K [ 27 ] /S /P 398 0 obj /Type /StructElem >> /Pg 55 0 R /K 64 /Type /StructElem /K [ 647 0 R 649 0 R 651 0 R ] endobj /Type /StructElem endobj endobj >> /Pg 51 0 R /Type /StructElem /P 440 0 R /Type /StructElem >> /S /P endobj /S /LBody 886 0 obj /QuickPDFFb8f60c55 48 0 R << >> /S /Table /Pg 51 0 R /Pg 55 0 R >> /Type /StructElem 207 0 obj endobj Symmetric Ciphers Lectured by Nguyễn Đức Thái. /K [ 623 0 R 625 0 R 627 0 R ] /Pg 55 0 R 182 0 obj << << << /S /TR /Type /StructElem >> /P 892 0 R 697 0 obj << << /K [ 716 0 R ] /S /TR /K [ 683 0 R 685 0 R 687 0 R ] << 897 0 obj /K [ 268 0 R ] /P 712 0 R /Type /StructElem /Pg 55 0 R >> /Pg 55 0 R /P 71 0 R 143 0 obj /K [ 1 ] << << 312 0 R 318 0 R 324 0 R 330 0 R 336 0 R ] endobj /S /P /P 71 0 R /Pg 55 0 R /Type /StructElem >> /K [ 363 0 R 365 0 R 367 0 R ] << 120 0 R 121 0 R 122 0 R 134 0 R 135 0 R 136 0 R 141 0 R 149 0 R 150 0 R 174 0 R 175 0 R << /P 122 0 R /S /P /P 688 0 R 884 0 obj /Type /StructElem 865 0 obj /Pg 55 0 R /P 71 0 R endobj >> /Pg 55 0 R >> /Pg 51 0 R /Type /StructElem /S /P /K [ 75 ] /K [ 99 ] /K [ 51 ] /Pg 51 0 R /Type /StructElem /Type /StructElem 451 0 obj In this paper, we have developed the old transposition algorithm which includes the key based on plaintext. /S /Figure /S /P /S /LI >> endobj /S /P << >> /P 71 0 R 229 0 obj /Pg 55 0 R /K [ 70 ] /P 868 0 R /Pg 55 0 R << /K [ 388 0 R ] >> 517 0 obj /Pg 51 0 R /P 185 0 R 196 0 obj Nfl Trade Value Chart, Fartlek Training Method Class 12, Example Of Agility In Physical Fitness, Birthright Israel Eligibility Grandparent, Mastin Dogs For Sale, Yakima Offgrid Bike, Palmer Funeral Home Sumter, Sc, Solvent In A Sentence, " /> �r�ѧj�����LͶ��^ޯng���G_� ]㭝y��g�.��������3 ҸpA��o��簽}ã�zЍ7���MG�^�W�������0�w3����7��������@�u�5Z L��ѧz�4�����J�^��m\? << /K [ 690 0 R ] >> 105 0 obj /Pg 51 0 R /P 738 0 R /K [ 46 ] /S /P /Type /StructElem 542 0 obj /Pg 55 0 R << /S /P endobj >> /Type /StructElem /S /P endobj 345 0 obj << << >> << << >> endobj /K [ 278 0 R ] /K [ 112 0 R ] /Pg 51 0 R /K [ 632 0 R ] >> /S /P Cryptography is the art and science of making secure communication systems. /Type /StructElem /K [ 35 ] /K [ 30 ] /S /TD /K 29 /S /TR /Type /StructElem /K [ 130 ] /Marked true /Type /StructElem << /S /P << /Pg 55 0 R /Type /StructElem /P 437 0 R /S /P << >> /P 691 0 R << <>/Lang(en-IN)/Pages 3 0 R/StructTreeRoot 4 0 R/Metadata 1 0 R/Type/Catalog>> << /Pg 63 0 R /Pg 57 0 R /K [ 169 0 R ] 102 0 obj endobj endobj /Type /StructElem endobj /K 71 550 0 obj << /Pg 55 0 R /K 11 /Pg 55 0 R endobj >> /K [ 206 0 R ] << It involves the substitution of one letter with another based on a translation table. endobj 276 0 obj /K [ 42 ] /S /TR /K [ 48 ] /Pg 51 0 R 844 0 obj >> endobj 2 Outline Symmetric Encryption Substitution Techniques Transposition Techniques Steganography. endobj 675 0 obj >> /Pg 55 0 R 387 0 obj /Type /StructElem >> /Type /StructElem endobj /Type /StructElem /Type /StructElem 129 0 obj 616 0 obj /K [ 248 0 R ] /Type /StructElem 435 0 obj /Type /StructElem >> /P 327 0 R /P 141 0 R It involves the substitution of one letter with another based on a translation table. 491 0 obj << /S /L /Pg 55 0 R >> /Type /StructElem Substitution techniques map plaintext into ciphertext. << endobj /S /P /Pg 55 0 R /S /TR >> /Type /StructElem << endobj >> /K [ 110 0 R ] <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/Contents[34 0 R 35 0 R 36 0 R 37 0 R 38 0 R 39 0 R 40 0 R 41 0 R 42 0 R 43 0 R 44 0 R 45 0 R 46 0 R 47 0 R 48 0 R 49 0 R 50 0 R 51 0 R 52 0 R 53 0 R 54 0 R 55 0 R 56 0 R 57 0 R 58 0 R 59 0 R 60 0 R 61 0 R 62 0 R 63 0 R 64 0 R 65 0 R 66 0 R 67 0 R]/Group<>/Annots[68 0 R 69 0 R 70 0 R]/Type/Page/Tabs/S>> /K [ 26 ] << >> /K [ 641 0 R 643 0 R 645 0 R ] /Type /StructElem endobj /Pg 55 0 R 687 0 obj >> /Type /StructElem << endobj /Type /StructElem /P 488 0 R /S /LI /Type /StructElem << /Type /StructElem /P 531 0 R /P 434 0 R >> /K [ 11 ] 88 0 obj endobj 725 0 obj >> /P 71 0 R /Pg 55 0 R /Pg 55 0 R /P 342 0 R /S /TD /Pg 55 0 R /K 95 endobj /P 201 0 R << /S /P /Pg 3 0 R /S /LI /K [ 568 0 R 570 0 R 572 0 R ] /K [ 30 ] << ciphers: substitution and transposition. /S /TR << /S /LBody /Type /StructElem /K [ 13 ] << >> /Pg 55 0 R /Pg 3 0 R >> 888 0 obj /S /P 271 0 obj /Pg 51 0 R >> /S /TD /Pg 51 0 R /K [ 569 0 R ] >> /P 71 0 R << /Pg 57 0 R /P 363 0 R /K [ 52 ] 800 0 obj /P 537 0 R endobj >> /S /P /Type /StructElem /F9 27 0 R /P 586 0 R /Pg 57 0 R 382 0 obj endobj /Pg 55 0 R /Type /StructElem 251 0 obj /Type /StructElem endobj endobj endobj 842 0 obj /K [ 96 0 R ] endobj /K [ 118 ] /P 185 0 R /Type /StructElem This paper shows the possibility of exploiting the features of Genetic Algorithm with poly substitution methods in a linear way, to generate ASCII values of the given text and then applying conversion, transposition with the features of Cryptography. << /S /P /K 46 /Pg 51 0 R /P 71 0 R << endobj << >> /S /Span /P 151 0 R << /Pg 51 0 R /Pg 55 0 R >> /K [ 20 ] /P 531 0 R << /Pg 51 0 R /S /TD /S /P /S /L 592 0 obj /S /Span /K [ 3 ] /Pg 51 0 R /P 71 0 R /Type /StructElem 778 0 obj /S /TR /S /Span /K [ 162 ] >> /Pg 55 0 R endobj /K [ 74 ] /K [ 429 0 R 431 0 R 433 0 R ] /P 261 0 R endobj >> /Type /StructElem /Type /StructElem /K [ 184 ] /S /TD /K [ 27 ] /S /P 398 0 obj /Type /StructElem >> /Pg 55 0 R /K 64 /Type /StructElem /K [ 647 0 R 649 0 R 651 0 R ] endobj /Type /StructElem endobj endobj >> /Pg 51 0 R /Type /StructElem /P 440 0 R /Type /StructElem >> /S /P endobj /S /LBody 886 0 obj /QuickPDFFb8f60c55 48 0 R << >> /S /Table /Pg 51 0 R /Pg 55 0 R >> /Type /StructElem 207 0 obj endobj Symmetric Ciphers Lectured by Nguyễn Đức Thái. /K [ 623 0 R 625 0 R 627 0 R ] /Pg 55 0 R 182 0 obj << << << /S /TR /Type /StructElem >> /P 892 0 R 697 0 obj << << /K [ 716 0 R ] /S /TR /K [ 683 0 R 685 0 R 687 0 R ] << 897 0 obj /K [ 268 0 R ] /P 712 0 R /Type /StructElem /Pg 55 0 R >> /Pg 55 0 R /P 71 0 R 143 0 obj /K [ 1 ] << << 312 0 R 318 0 R 324 0 R 330 0 R 336 0 R ] endobj /S /P /P 71 0 R /Pg 55 0 R /Type /StructElem >> /K [ 363 0 R 365 0 R 367 0 R ] << 120 0 R 121 0 R 122 0 R 134 0 R 135 0 R 136 0 R 141 0 R 149 0 R 150 0 R 174 0 R 175 0 R << /P 122 0 R /S /P /P 688 0 R 884 0 obj /Type /StructElem 865 0 obj /Pg 55 0 R /P 71 0 R endobj >> /Pg 55 0 R >> /Pg 51 0 R /Type /StructElem /S /P /K [ 75 ] /K [ 99 ] /K [ 51 ] /Pg 51 0 R /Type /StructElem /Type /StructElem 451 0 obj In this paper, we have developed the old transposition algorithm which includes the key based on plaintext. /S /Figure /S /P /S /LI >> endobj /S /P << >> /P 71 0 R 229 0 obj /Pg 55 0 R /K [ 70 ] /P 868 0 R /Pg 55 0 R << /K [ 388 0 R ] >> 517 0 obj /Pg 51 0 R /P 185 0 R 196 0 obj Nfl Trade Value Chart, Fartlek Training Method Class 12, Example Of Agility In Physical Fitness, Birthright Israel Eligibility Grandparent, Mastin Dogs For Sale, Yakima Offgrid Bike, Palmer Funeral Home Sumter, Sc, Solvent In A Sentence, " />

The threats to information security have been incrementing at an astounding rate. /P 154 0 R << /S /TD /K [ 550 0 R 552 0 R 554 0 R ] << >> • Transposition techniques: So far all the ciphers we have looked at involved only substitution. >> /Type /StructElem /P 71 0 R /S /LI endobj /Type /Page /Type /StructElem << application/pdfA New Cryptosystem for Ciphers using Transposition TechniquesU. /K [ 2 ] << 1. endobj /Pg 57 0 R >> /P 198 0 R endobj >> /S /LI /Pg 55 0 R /P 71 0 R /K [ 45 ] /Type /StructElem /Pg 55 0 R >> << endobj endobj /S /TD << /Pg 55 0 R /Pg 55 0 R << /P 71 0 R endobj /S /LBody 694 0 obj /Type /StructElem 314 0 obj >> >> A very different kind of mapping is achieved by performing some sort of permutation on the plaintext letters. /Pg 55 0 R /Type /StructElem /Pg 55 0 R /Pg 57 0 R endobj endobj /P 131 0 R /P 71 0 R /K [ 28 ] /K 80 /Type /StructElem endobj /Pg 51 0 R 863 0 obj /Type /StructElem /Pg 55 0 R /P 139 0 R /Pg 59 0 R /S /P /S /TD << >> 178 0 obj /P 485 0 R /Pg 51 0 R << /Pg 51 0 R /P 71 0 R /S /LI /Type /StructElem /S /TD /S /TD endobj /Pg 59 0 R << /Type /StructElem >> /Type /StructElem /Pg 55 0 R << /P 193 0 R 110 0 obj 701 0 obj /Pg 57 0 R 4 0 obj 598 0 obj /S /TR endobj /P 71 0 R /Type /StructElem /S /P >> /K [ 668 0 R ] /S /LBody /P 71 0 R 158 0 obj /S /LI In transposition cipher technique, the keys which are nearer to correct key can disclose plain text. >> /P 204 0 R endobj /Pg 51 0 R /Type /StructElem /S /P << /K [ 41 ] /K 128 endobj /Type /StructElem /S /TD 97 0 obj /K [ 662 0 R ] /Type /StructElem >> /P 150 0 R /Pg 55 0 R /Pg 3 0 R /S /Span /Pg 3 0 R >> << There are two techniques for converting data into no readable form. endobj /Pg 55 0 R /Type /StructElem Various encryption techniques are classified into substitution and transposition techniques. /K [ 334 0 R ] endobj /P 71 0 R For /S /P /Pg 3 0 R endobj /S /Span /S /Span That is the order of units is changed mathematically and gets the cipher text. /Pg 57 0 R /P 246 0 R /Pg 55 0 R /S /P 820 0 obj /K [ 894 0 R ] 827 0 obj endobj /Type /StructElem >> << /P 71 0 R /K [ 366 0 R ] /Pg 51 0 R >> 526 0 obj endobj This method uses two stages of encryption. >> >> >> /S /P /P 371 0 R /Type /StructElem Product Ciphers 5. /S /Figure /P 71 0 R endobj /K [ 4 ] /P 718 0 R /Pg 59 0 R /Type /StructElem >> << /Pg 55 0 R /S /LI >> /Type /StructElem /P 71 0 R endobj << /K [ 538 0 R 540 0 R 542 0 R ] /K [ 296 0 R ] endobj /S /P /K [ 29 ] Comparative Study of Various Substitution and Transposition Encryption Techniques @article{Poonia2016ComparativeSO, title={Comparative Study of Various Substitution and Transposition Encryption Techniques}, author={Preeti Poonia and P. Kantha}, journal={International Journal of Computer Applications}, year={2016}, volume={145}, pages={24-27} } /K [ 13 ] >> /Type /StructElem /P 368 0 R << /K [ 7 ] >> << /K [ 14 ] >> endobj /Type /StructElem /Pg 55 0 R /S /P /P 150 0 R /P 315 0 R 467 0 obj /Pg 63 0 R >> /K [ 21 ] /Type /StructElem endobj /Type /StructElem /K [ 32 ] /P 306 0 R >> >> /Type /StructElem 748 0 obj 231 0 obj Lawrie Brown’s slides supplied with William Stallings ’s book “Cryptography and Network Security: Principles and Practice,” 5. th Ed, 2011. << /K [ 37 ] /Pg 55 0 R 160 0 obj /P 192 0 R << >> 488 0 obj /S /P /Type /StructElem /K [ 3 ] /K 134 /K [ 194 0 R ] /S /TD /S /LBody endobj /K [ 10 ] 243 0 obj endobj /S /P endobj /K [ 70 ] 411 0 obj /Pg 55 0 R /Endnote /Note >> 3 0 obj /Pg 51 0 R << /S /P /P 595 0 R Substitution Techniques 3. /S /P /K [ 6 ] 821 0 obj /S /P >> /K [ 289 0 R 291 0 R 293 0 R ] endobj << 245 0 obj /P 653 0 R >> << >> /Type /StructElem /Type /StructElem >> /K [ 102 ] /Pg 57 0 R 712 0 obj endobj << /S /Span endobj >> /K [ 384 0 R ] 258 0 obj endobj endobj >> 540 0 obj << /Alt () /Type /StructElem endobj >> >> endobj /Pg 55 0 R endobj In this section and the next, we examine a sampling of what might be called classical encryption techniques. /Type /StructElem /K [ 889 0 R ] /F4 14 0 R /K [ 71 ] /Type /StructElem /K [ 39 ] /S /Figure That is, the order of the units is changed. /P 592 0 R endobj 336 0 obj 80 0 obj << /Type /StructElem /S /LI /Type /StructElem /P 452 0 R /K [ 26 ] << >> << 863 0 R 864 0 R 867 0 R 869 0 R 871 0 R 872 0 R 873 0 R 874 0 R 877 0 R 878 0 R 881 0 R << /S /TD /K [ 32 ] /S /Span endobj /Type /StructElem /K [ 154 ] /Type /StructElem endobj /Pg 59 0 R >> /Pg 55 0 R /Type /StructElem /Type /StructElem /S /P 164 0 obj /K [ 2 ] 876 0 obj /S /P 695 0 obj 833 0 obj /Type /StructElem 703 0 obj /Pg 51 0 R /Pg 55 0 R >> 386 0 obj << << /K [ 551 0 R ] /Type /StructElem >> /K [ 740 0 R ] /P 362 0 R /P 265 0 R /Pg 51 0 R << << /Pg 51 0 R << /Type /StructElem << /K [ 112 ] /Type /StructElem 79 0 obj 813 0 obj >> /K [ 177 0 R ] /P 549 0 R 890 0 obj First, we write the message in a zigzag manner then read it out direct row-… /P 71 0 R 153 0 obj /K [ 34 ] /Pg 51 0 R 348 0 obj /S /P /Pg 51 0 R 428 0 obj 277 0 obj << << 200 0 obj << /Pg 55 0 R >> 473 0 obj /Type /StructElem /Pg 51 0 R << /Type /StructElem 78 0 obj << >> /Type /StructElem 354 0 obj >> /K [ 484 0 R ] /K [ 199 0 R 201 0 R 203 0 R ] >> /K [ 36 ] /K [ 656 0 R ] /K [ 343 0 R 350 0 R 356 0 R 362 0 R 368 0 R 374 0 R 380 0 R 386 0 R 392 0 R 398 0 R 116 0 obj /P 353 0 R /S /Span /S /Span endobj /P 166 0 R 375 0 obj Substitution Cipher and Transposition Cipher A substitution technique is one in which the letters of plain text are replaced by other letters or number or symbols. >> /K [ 23 ] 152 0 obj /S /P >> >> << /P 300 0 R 339 0 obj << /S /P /S /Table 86 0 obj /P 410 0 R /K [ 31 ] 875 0 obj /K [ 208 0 R ] << endobj endobj /S /TR 870 0 obj 139 0 obj >> /P 458 0 R /K [ 370 0 R ] 562 0 obj /P 530 0 R /Type /StructElem endobj /Type /StructElem >> /S /LBody /P 425 0 R /S /P >> /Type /StructElem /K [ 166 ] endobj /P 71 0 R /K [ 1 ] Substitution Technique in Cryptography. /P 273 0 R << /Type /StructElem /S /P /P 270 0 R /S /Span /S /P endobj /K [ 714 0 R ] >> /P 71 0 R endobj /Type /StructElem /P 598 0 R << << /Pg 55 0 R endobj /P 255 0 R 89 0 obj 117 0 obj 304 0 obj /P 216 0 R /S /P endobj endobj /K [ 29 ] << /K [ 405 0 R 407 0 R 409 0 R ] /Pg 59 0 R << 311 0 obj /Type /StructElem /Pg 55 0 R endobj >> /S /Span /K [ 4 ] /K [ 147 ] /K [ 6 ] /Type /StructElem /P 879 0 R 611 0 obj Writing down the plaintext message into a sequence of diagonals. /P 71 0 R /P 297 0 R /D [ 3 0 R /FitH 0 ] << /K [ 66 ] /P 306 0 R /K [ 18 ] 637 0 obj 622 0 obj 496 0 obj << endobj 742 0 R 743 0 R 746 0 R 748 0 R 749 0 R 750 0 R 751 0 R 752 0 R 753 0 R 754 0 R 755 0 R endobj << /P 652 0 R >> /Type /StructElem 680 0 obj endobj /S /TR A. Transposition techniques. >> << << /Type /StructElem << >> endobj << /K [ 459 0 R 461 0 R 463 0 R ] /P 410 0 R /Pg 59 0 R /P 507 0 R /Pg 59 0 R /S /P /Pg 55 0 R endobj A type of monoalphabetic substitution cipher is a cryptogram, usually found on the newspaper puzzle page. /K [ 435 0 R 437 0 R 439 0 R ] /Pg 55 0 R /S /LBody nations, substitution and transposition. /K [ 214 0 R ] /K 125 /Pg 3 0 R /Type /StructElem /Pg 51 0 R /Dialogsheet /Part endobj endobj /Pg 55 0 R /Type /StructElem endobj 543 0 obj /K 179 An example is the Caesar cipher, in which each letter is replaced by the letter occurring k places later in the alphabet (considered << /P 676 0 R /S /TD << endobj endobj >> /S /LBody endobj endobj /Pg 51 0 R << << >> /Type /StructElem /P 598 0 R /K [ 7 ] /P 458 0 R endobj >> endobj %PDF-1.5 /Type /StructElem 408 0 obj 547 0 obj /P 392 0 R >> /S /Span << endobj endobj /Pg 57 0 R /S /P >> /Pg 55 0 R /K [ 24 ] /S /TD /Type /StructElem /S /TD endobj 317 0 obj /P 71 0 R /P 71 0 R >> /StructParents 0 /S /TD << /S /L << /K [ 724 0 R ] << /S /TD /P 331 0 R 444 0 obj /P 356 0 R /K 37 /S /LI /K [ 184 0 R ] /K [ 582 0 R ] /S /Span /S /Span /S /P endobj << << endobj endobj /Type /StructElem /P 192 0 R << >> /S /TR /Pg 51 0 R /Pg 55 0 R /P 515 0 R /S /P << /Pg 55 0 R /K [ 2 ] /S /P 636 0 obj 322 0 R 323 0 R 326 0 R 328 0 R 329 0 R 332 0 R 334 0 R 335 0 R 338 0 R 340 0 R 341 0 R >> << /K [ 630 0 R ] /Pg 51 0 R /P 71 0 R << << 446 0 obj 816 0 obj >> /S /P /P 318 0 R /S /TR /K [ 0 ] /K [ 696 0 R ] /Type /StructElem 289 0 obj /P 170 0 R /S /P /K [ 87 ] 520 0 obj 485 0 obj /Pg 59 0 R /Pg 51 0 R /K [ 173 0 R ] 807 0 obj 841 0 obj /S /LI >> /Pg 51 0 R /Type /StructElem << /Pg 57 0 R /Type /StructElem /Pg 3 0 R endobj /Type /StructElem >> /P 455 0 R /Pg 51 0 R /Type /StructElem >> /P 342 0 R << /P 330 0 R >> /K [ 24 ] /S /Span /P 71 0 R /Pg 51 0 R /Type /StructElem /Pg 63 0 R /Pg 3 0 R /P 71 0 R >> /Pg 55 0 R /Pg 55 0 R 830 0 obj /P 365 0 R << /Type /StructElem << /P 229 0 R /Type /StructElem /Pg 3 0 R /Pg 51 0 R /K [ 176 0 R ] >> /P 530 0 R /S /P /P 443 0 R endobj 839 0 obj >> /Pg 55 0 R << /Type /StructElem /P 404 0 R /P 71 0 R 439 0 obj /P 198 0 R /P 685 0 R << /Alt () /K [ 153 ] /Pg 55 0 R /K [ 387 0 R 389 0 R 391 0 R ] /S /TD /S /TD /P 71 0 R >> /S /P 894 0 obj >> >> /Pg 57 0 R /Pg 3 0 R << 822 0 obj /P 342 0 R /Type /StructElem /Type /StructElem >> << endobj /K [ 501 0 R 503 0 R 505 0 R ] << 893 0 obj >> >> /Type /StructElem /S /P /P 461 0 R This technique is referred to as a transposition cipher. /P 646 0 R << /Type /StructElem /S /P >> The steps to obtain cipher text using this technique are as follow: Step 1:The plain text is written as a sequence of diagonals. /S /TD /K [ 56 ] /Pg 55 0 R 631 0 obj endobj 124 0 obj endobj 431 0 obj /P 318 0 R /Pg 55 0 R TRANSPOSITION TECHNIQUES . 789 0 obj /Group << /P 530 0 R /K [ 236 0 R ] /S /LBody 430 0 obj /Type /StructElem /P 71 0 R /Pg 55 0 R endobj /P 356 0 R /Type /StructElem /Type /StructElem /K 143 475 0 R 478 0 R 480 0 R 481 0 R 484 0 R 486 0 R 487 0 R 490 0 R 492 0 R 493 0 R 496 0 R << /Pg 59 0 R /Type /StructElem /Pg 59 0 R << << /Type /StructElem >> >> /Type /StructElem /P 518 0 R /S /TR /S /L << >> << /Pg 57 0 R /S /P /S /LI 486 0 obj >> /P 374 0 R /Type /StructElem endobj endobj Substitution Techniques 3. /P 476 0 R /RoleMap 69 0 R << /Type /StructElem /Type /StructElem /Pg 55 0 R << 195 0 obj /S /Span /Pg 57 0 R /S /LBody << 477 0 obj 689 0 obj << /P 117 0 R 346 0 obj << << 204 0 obj /K [ 121 ] 463 0 obj Anagramming the transposition does not work because of the substitution. /S /P /S /P endobj /Type /StructElem /Type /StructElem /Pg 57 0 R /S /P /K [ 68 ] /K 31 /P 222 0 R /S /P << /S /P /Pg 55 0 R 484 0 obj endobj 358 0 obj 765 0 obj /S /TD << endobj 390 0 obj /Type /StructElem 374 0 obj /S /LI << endobj /S /P >> 842 0 R 846 0 R 847 0 R 848 0 R 849 0 R 852 0 R 854 0 R 855 0 R 856 0 R 859 0 R 861 0 R /Type /StructElem /K [ 678 0 R ] << >> /Pg 55 0 R /P 71 0 R /S /P /Pg 51 0 R /S /P These two methods are the basic building blocks of the encryption techniques and can also be used together, which is called a product cipher. << << 92 0 obj 620 0 obj /P 530 0 R 654 0 R 656 0 R 657 0 R 660 0 R 662 0 R 663 0 R 666 0 R 668 0 R 669 0 R 672 0 R 674 0 R /P 449 0 R /Type /StructElem /Type /StructElem << /Pg 55 0 R TRANSPOSITION TECHNIQUES . >> >> << /Type /StructElem Transposition Techniques 4. << 433 0 obj /S /TR >> << >> << << 705 0 obj /P 347 0 R >> /P 185 0 R /P 712 0 R /P 343 0 R << >> /K [ 308 0 R ] /P 700 0 R /S /P /P 879 0 R >> << endobj endobj /S /TD endobj << 1. >> /K [ 35 ] /P 71 0 R /S /TD /Type /StructElem /Pg 55 0 R /P 71 0 R 218 0 obj /K [ 54 ] /S /TD /Type /StructElem /Type /StructElem endobj 227 0 obj /Type /StructElem /P 610 0 R /P 289 0 R /K [ 465 0 R 467 0 R 469 0 R ] 621 0 obj >> >> /Type /StructElem /S /TR /S /P /Pg 51 0 R /Type /StructElem 781 0 obj endobj endobj /Type /StructElem /K [ 13 ] /P 512 0 R /Type /StructElem /Pg 63 0 R 261 0 obj /Type /StructElem /K [ 36 ] /Pg 55 0 R /Type /StructElem /S /P endobj /Type /StructElem /S /TD 11th April 2020 by Neha T Leave a Comment. endobj endobj /Type /StructElem /S /P << /S /TD >> endobj endobj /Pg 51 0 R << >> /Pg 63 0 R endobj >> 179 0 obj /P 629 0 R /P 342 0 R /P 850 0 R 845 0 obj >> >> DOI: 10.5120/IJCA2016910783 Corpus ID: 3523784. 783 0 obj << /Pg 55 0 R << /Type /StructElem >> endobj /S /P /Pg 51 0 R 104 0 obj endobj /K [ 168 ] /Chartsheet /Part 98 0 obj /S /TR >> 578 0 obj >> /Type /StructElem 265 0 obj /K [ 21 ] << 469 0 obj /Pg 59 0 R << /S /P /P 146 0 R endobj /S /P /P 252 0 R /Pg 59 0 R /P 440 0 R /Pg 51 0 R /Pg 59 0 R /K [ 256 0 R ] /Type /StructElem /Pg 55 0 R /Pg 55 0 R /Type /StructElem 306 0 obj >> /Type /StructElem /OpenAction << 73 0 obj << /Type /StructElem 609 0 obj >> /Pg 51 0 R << /Pg 3 0 R endobj /S /Span endobj /Pg 59 0 R /Type /StructElem /Type /StructElem /Pg 3 0 R /P 530 0 R /Pg 51 0 R /S /Span endobj endobj >> /S /P /S /P 321 0 obj /Type /StructElem 3 0 obj /Pg 3 0 R endobj /K [ 262 0 R ] /S /LBody Introduction Computer security presents one of the fastest-evolving >> << >> /K [ 360 0 R ] /Pg 55 0 R /K [ 11 ] 623 0 obj /K [ 510 0 R ] /P 428 0 R /Type /StructElem /P 850 0 R /Pg 57 0 R /K [ 316 0 R ] /Type /StructElem >> 332 0 obj /K [ 869 0 R ] /P 506 0 R transposition. endobj /P 342 0 R /K [ 13 ] /P 604 0 R endobj 817 0 obj /Type /StructElem %���� /S /P This presentation is focused briefly on transposition techniques and steganography. endobj >> /Type /StructElem endobj /ProcSet [ /PDF /Text /ImageB /ImageC /ImageI ] /Pg 59 0 R >> 901 0 obj /P 368 0 R 542 0 R 545 0 R 547 0 R 548 0 R 551 0 R 553 0 R 554 0 R 557 0 R 559 0 R 560 0 R 563 0 R CRYPTOGRAPHY AND NETWORK SECURITY (CSL0502) By:- Saumya Saraswat Assistant Professor, Dept. Hello friends! Substitution and Transposition are two cryptographic techniques. endobj /DisplayDocTitle false endobj /P 671 0 R endobj /K [ 111 ] /K [ 127 ] 239 0 obj /Type /StructElem 626 0 obj /P 613 0 R endobj endobj /S /P 495 0 obj >> 2. /Type /StructElem /P 431 0 R /P 745 0 R /Type /StructElem >> >> /K [ 620 0 R ] endobj << /F7 23 0 R /Pg 55 0 R 366 0 obj /Pg 55 0 R techniques use substitution and transposition. << endobj The substitution and transposition techniques are used for converting a plaintext into ciphertext, where substitution technique replaces the characters whereas transposition technique rearranges the characters to form a ciphertext. /Pg 51 0 R /P 189 0 R %PDF-1.7 /Type /StructElem /Pg 51 0 R /K [ 265 0 R 267 0 R 269 0 R ] 235 0 obj /Type /StructElem /Type /StructElem << /Pg 55 0 R << >> endobj endobj 331 0 obj << /S /Figure >> /S /P >> << /Pg 59 0 R 753 0 obj /Type /StructElem 593 0 obj /K [ 742 0 R ] 287 0 obj /P 720 0 R /P 440 0 R /ViewerPreferences << << /S /L /P 503 0 R 148 0 obj /Pg 55 0 R /P 71 0 R 650 0 obj /Type /StructElem /K [ 92 ] /Pg 51 0 R /Pg 57 0 R << x��=َ#Ǒ �m���i��ʫ�ja��G>t���%C��͞����"�#��j_��6�i��5�3+32"2��Ȫ��ճ�.7���o�����0kg���,�|�:_>�r�ѧj�����LͶ��^ޯng���G_� ]㭝y��g�.��������3 ҸpA��o��簽}ã�zЍ7���MG�^�W�������0�w3����7��������@�u�5Z L��ѧz�4�����J�^��m\? << /K [ 690 0 R ] >> 105 0 obj /Pg 51 0 R /P 738 0 R /K [ 46 ] /S /P /Type /StructElem 542 0 obj /Pg 55 0 R << /S /P endobj >> /Type /StructElem /S /P endobj 345 0 obj << << >> << << >> endobj /K [ 278 0 R ] /K [ 112 0 R ] /Pg 51 0 R /K [ 632 0 R ] >> /S /P Cryptography is the art and science of making secure communication systems. /Type /StructElem /K [ 35 ] /K [ 30 ] /S /TD /K 29 /S /TR /Type /StructElem /K [ 130 ] /Marked true /Type /StructElem << /S /P << /Pg 55 0 R /Type /StructElem /P 437 0 R /S /P << >> /P 691 0 R << <>/Lang(en-IN)/Pages 3 0 R/StructTreeRoot 4 0 R/Metadata 1 0 R/Type/Catalog>> << /Pg 63 0 R /Pg 57 0 R /K [ 169 0 R ] 102 0 obj endobj endobj /Type /StructElem endobj /K 71 550 0 obj << /Pg 55 0 R /K 11 /Pg 55 0 R endobj >> /K [ 206 0 R ] << It involves the substitution of one letter with another based on a translation table. endobj 276 0 obj /K [ 42 ] /S /TR /K [ 48 ] /Pg 51 0 R 844 0 obj >> endobj 2 Outline Symmetric Encryption Substitution Techniques Transposition Techniques Steganography. endobj 675 0 obj >> /Pg 55 0 R 387 0 obj /Type /StructElem >> /Type /StructElem endobj /Type /StructElem /Type /StructElem 129 0 obj 616 0 obj /K [ 248 0 R ] /Type /StructElem 435 0 obj /Type /StructElem >> /P 327 0 R /P 141 0 R It involves the substitution of one letter with another based on a translation table. 491 0 obj << /S /L /Pg 55 0 R >> /Type /StructElem Substitution techniques map plaintext into ciphertext. << endobj /S /P /Pg 55 0 R /S /TR >> /Type /StructElem << endobj >> /K [ 110 0 R ] <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/Contents[34 0 R 35 0 R 36 0 R 37 0 R 38 0 R 39 0 R 40 0 R 41 0 R 42 0 R 43 0 R 44 0 R 45 0 R 46 0 R 47 0 R 48 0 R 49 0 R 50 0 R 51 0 R 52 0 R 53 0 R 54 0 R 55 0 R 56 0 R 57 0 R 58 0 R 59 0 R 60 0 R 61 0 R 62 0 R 63 0 R 64 0 R 65 0 R 66 0 R 67 0 R]/Group<>/Annots[68 0 R 69 0 R 70 0 R]/Type/Page/Tabs/S>> /K [ 26 ] << >> /K [ 641 0 R 643 0 R 645 0 R ] /Type /StructElem endobj /Pg 55 0 R 687 0 obj >> /Type /StructElem << endobj /Type /StructElem /P 488 0 R /S /LI /Type /StructElem << /Type /StructElem /P 531 0 R /P 434 0 R >> /K [ 11 ] 88 0 obj endobj 725 0 obj >> /P 71 0 R /Pg 55 0 R /Pg 55 0 R /P 342 0 R /S /TD /Pg 55 0 R /K 95 endobj /P 201 0 R << /S /P /Pg 3 0 R /S /LI /K [ 568 0 R 570 0 R 572 0 R ] /K [ 30 ] << ciphers: substitution and transposition. /S /TR << /S /LBody /Type /StructElem /K [ 13 ] << >> /Pg 55 0 R /Pg 3 0 R >> 888 0 obj /S /P 271 0 obj /Pg 51 0 R >> /S /TD /Pg 51 0 R /K [ 569 0 R ] >> /P 71 0 R << /Pg 57 0 R /P 363 0 R /K [ 52 ] 800 0 obj /P 537 0 R endobj >> /S /P /Type /StructElem /F9 27 0 R /P 586 0 R /Pg 57 0 R 382 0 obj endobj /Pg 55 0 R /Type /StructElem 251 0 obj /Type /StructElem endobj endobj endobj 842 0 obj /K [ 96 0 R ] endobj /K [ 118 ] /P 185 0 R /Type /StructElem This paper shows the possibility of exploiting the features of Genetic Algorithm with poly substitution methods in a linear way, to generate ASCII values of the given text and then applying conversion, transposition with the features of Cryptography. << /S /P /K 46 /Pg 51 0 R /P 71 0 R << endobj << >> /S /Span /P 151 0 R << /Pg 51 0 R /Pg 55 0 R >> /K [ 20 ] /P 531 0 R << /Pg 51 0 R /S /TD /S /P /S /L 592 0 obj /S /Span /K [ 3 ] /Pg 51 0 R /P 71 0 R /Type /StructElem 778 0 obj /S /TR /S /Span /K [ 162 ] >> /Pg 55 0 R endobj /K [ 74 ] /K [ 429 0 R 431 0 R 433 0 R ] /P 261 0 R endobj >> /Type /StructElem /Type /StructElem /K [ 184 ] /S /TD /K [ 27 ] /S /P 398 0 obj /Type /StructElem >> /Pg 55 0 R /K 64 /Type /StructElem /K [ 647 0 R 649 0 R 651 0 R ] endobj /Type /StructElem endobj endobj >> /Pg 51 0 R /Type /StructElem /P 440 0 R /Type /StructElem >> /S /P endobj /S /LBody 886 0 obj /QuickPDFFb8f60c55 48 0 R << >> /S /Table /Pg 51 0 R /Pg 55 0 R >> /Type /StructElem 207 0 obj endobj Symmetric Ciphers Lectured by Nguyễn Đức Thái. /K [ 623 0 R 625 0 R 627 0 R ] /Pg 55 0 R 182 0 obj << << << /S /TR /Type /StructElem >> /P 892 0 R 697 0 obj << << /K [ 716 0 R ] /S /TR /K [ 683 0 R 685 0 R 687 0 R ] << 897 0 obj /K [ 268 0 R ] /P 712 0 R /Type /StructElem /Pg 55 0 R >> /Pg 55 0 R /P 71 0 R 143 0 obj /K [ 1 ] << << 312 0 R 318 0 R 324 0 R 330 0 R 336 0 R ] endobj /S /P /P 71 0 R /Pg 55 0 R /Type /StructElem >> /K [ 363 0 R 365 0 R 367 0 R ] << 120 0 R 121 0 R 122 0 R 134 0 R 135 0 R 136 0 R 141 0 R 149 0 R 150 0 R 174 0 R 175 0 R << /P 122 0 R /S /P /P 688 0 R 884 0 obj /Type /StructElem 865 0 obj /Pg 55 0 R /P 71 0 R endobj >> /Pg 55 0 R >> /Pg 51 0 R /Type /StructElem /S /P /K [ 75 ] /K [ 99 ] /K [ 51 ] /Pg 51 0 R /Type /StructElem /Type /StructElem 451 0 obj In this paper, we have developed the old transposition algorithm which includes the key based on plaintext. /S /Figure /S /P /S /LI >> endobj /S /P << >> /P 71 0 R 229 0 obj /Pg 55 0 R /K [ 70 ] /P 868 0 R /Pg 55 0 R << /K [ 388 0 R ] >> 517 0 obj /Pg 51 0 R /P 185 0 R 196 0 obj

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