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3/16/2018 B. Ramamurthy 1 3/16/2018 B. Ramamurthy 1

Introduction 3/16/2018 B. Ramamurthy 2 Introduction 3/16/2018 B. Ramamurthy 2

Encryption 3/16/2018 B. Ramamurthy 3 Encryption 3/16/2018 B. Ramamurthy 3

Cryptographic Algorithms 3/16/2018 B. Ramamurthy 4 Cryptographic Algorithms 3/16/2018 B. Ramamurthy 4

Stream cipher 3/16/2018 B. Ramamurthy 5 Stream cipher 3/16/2018 B. Ramamurthy 5

Cryptographic algorithms 3/16/2018 B. Ramamurthy 6 Cryptographic algorithms 3/16/2018 B. Ramamurthy 6

TEA Encryption Function 3/16/2018 B. Ramamurthy 7 TEA Encryption Function 3/16/2018 B. Ramamurthy 7

TEA decryption function 3/16/2018 B. Ramamurthy 8 TEA decryption function 3/16/2018 B. Ramamurthy 8

3/16/2018 B. Ramamurthy 9 3/16/2018 B. Ramamurthy 9

Cryptography 3/16/2018 B. Ramamurthy 10 Cryptography 3/16/2018 B. Ramamurthy 10

3/16/2018 B. Ramamurthy 11 3/16/2018 B. Ramamurthy 11

3/16/2018 B. Ramamurthy 12 3/16/2018 B. Ramamurthy 12

3/16/2018 B. Ramamurthy 13 3/16/2018 B. Ramamurthy 13

Application of RSA 3/16/2018 B. Ramamurthy 14 Application of RSA 3/16/2018 B. Ramamurthy 14

How can you authenticate “sender”? 3/16/2018 B. Ramamurthy 15 How can you authenticate “sender”? 3/16/2018 B. Ramamurthy 15

Digital Signatures 3/16/2018 B. Ramamurthy 16 Digital Signatures 3/16/2018 B. Ramamurthy 16

Digest Functions 3/16/2018 B. Ramamurthy 17 Digest Functions 3/16/2018 B. Ramamurthy 17

Alice’s bank account certificate 3/16/2018 B. Ramamurthy 18 Alice’s bank account certificate 3/16/2018 B. Ramamurthy 18

3/16/2018 B. Ramamurthy 19 3/16/2018 B. Ramamurthy 19

3/16/2018 B. Ramamurthy 20 3/16/2018 B. Ramamurthy 20

X 509 Certificate format 3/16/2018 B. Ramamurthy 21 X 509 Certificate format 3/16/2018 B. Ramamurthy 21

3/16/2018 B. Ramamurthy 22 3/16/2018 B. Ramamurthy 22

Ticketgranting service T Authentication service A 3/16/2018 B. Ramamurthy 23 Ticketgranting service T Authentication service A 3/16/2018 B. Ramamurthy 23

3/16/2018 B. Ramamurthy 24 3/16/2018 B. Ramamurthy 24

3/16/2018 B. Ramamurthy 25 3/16/2018 B. Ramamurthy 25

3/16/2018 B. Ramamurthy 26 3/16/2018 B. Ramamurthy 26

3/16/2018 B. Ramamurthy 27 3/16/2018 B. Ramamurthy 27

3/16/2018 B. Ramamurthy 28 3/16/2018 B. Ramamurthy 28

WS-Security 3/16/2018 B. Ramamurthy 29 WS-Security 3/16/2018 B. Ramamurthy 29

WS-Security (contd. ) 3/16/2018 B. Ramamurthy 30 WS-Security (contd. ) 3/16/2018 B. Ramamurthy 30

Summary 3/16/2018 B. Ramamurthy 31 Summary 3/16/2018 B. Ramamurthy 31