mcgraw-hill©the mcgraw-hill companies, inc., 2003 chapter 19 data encryption

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2003 Chapter 19 Data Encryption

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McGraw-Hill ©The McGraw-Hill Companies, Inc., 2003

Chapter 19

DataEncryption

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2003

Figure 19-1

Concept of Encryption and Decryption

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2003

Encryption/Decryption Methods

Figure 19-2

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2003

Monoalphabetic Substitution

Figure 19-3

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2003

Polyalphabetic Substitution

Figure 19-4

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2003

Transpositional Encryption

Figure 19-

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2003

Encoding/DecodingFigure 19-6

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2003

Permutation

Figure 19-7

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2003

SubstitutionFigure 19-8

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2003

ProductFigure 19-9

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2003

Exclusive ORFigure 19-10

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2003

Rotation

Figure 19-11

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2003

DESFigure 19-12

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2003

Subkey Generation in DESFigure 19-13

McGraw-Hill ©The McGraw-Hill Companies, Inc., 2003

One of the 16Steps in DES

Figure 19-14

Page 16: McGraw-Hill©The McGraw-Hill Companies, Inc., 2003 Chapter 19 Data Encryption

Public Key EncryptionFigure 19-15

Page 17: McGraw-Hill©The McGraw-Hill Companies, Inc., 2003 Chapter 19 Data Encryption

RSAFigure 19-16

Page 18: McGraw-Hill©The McGraw-Hill Companies, Inc., 2003 Chapter 19 Data Encryption

RSA Encryption and Decryption

Figure 19-17

Page 19: McGraw-Hill©The McGraw-Hill Companies, Inc., 2003 Chapter 19 Data Encryption

Security of RSA

Figure 19-18

Page 20: McGraw-Hill©The McGraw-Hill Companies, Inc., 2003 Chapter 19 Data Encryption

Signature AuthenticationFigure 19-19

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