1. CH 6. Stream Ciphers
Information Security & IoT Lab 김해용

2. Content 6.1 Introduction 6.2 Feedback shift registers목차
Content
6.1 Introduction
6.2 Feedback shift registers
6.3 Stream ciphers based on LFSRs
6.4 Other stream cipher

3. 6.1 Introduction
6.1 Introduction

4. 6.1 Introduction
6.1.1 Classification

5. 6.1 Introduction
6.1.1 Classification
The one-time pad

6. 6.1 Introduction
6.1.1 Classification
The one-time pad

7. 6.1 Introduction
6.1.1 Classification
Synchronous stream cipher

8. 6.1 Introduction 6.1.1 Classification
Properties of synchronous stream ciphers

9. 6.1 Introduction 6.1.1 Classification
Properties of synchronous stream ciphers

10. 6.1 Introduction 6.1.1 Classification
Self-synchronizing stream ciphers

11. 6.1 Introduction 6.1.1 Classification
Properties of self-synchronizing stream ciphers

12. 6.2 Feedback shift registers
6.2.1 Linear feedback shift register

13. 6.2 Feedback shift registers
6.2.1 Linear feedback shift register

14. 6.2 Feedback shift registers
6.2.1 Linear feedback shift register

15. 6.2 Feedback shift registers
6.2.1 Linear feedback shift register
𝑐 1 =1, 𝑐 4 =1 1

16. 6.2 Feedback shift registers
6.2.1 Linear feedback shift register
𝑐 1 =1, 𝑐 4 =1 1

17. 6.2 Feedback shift registers
6.2.1 Linear feedback shift register

18. 6.2 Feedback shift registers
6.2.1 Linear feedback shift register

19. 6.2 Feedback shift registers
6.2.1 Linear feedback shift register

20. 6.3 Stream ciphers based on LFSRs

21. 6.3 Stream ciphers based on LFSRs
6.3.1 Nonlinear combination generators

22. 6.3 Stream ciphers based on LFSRs
6.3.1 Nonlinear combination generators

23. 6.3 Stream ciphers based on LFSRs
6.3.1 Nonlinear combination generators

24. 6.3 Stream ciphers based on LFSRs
6.3.1 Nonlinear combination generators

25. 6.3 Stream ciphers based on LFSRs
6.3.1 Nonlinear combination generators

26. 6.3 Stream ciphers based on LFSRs
6.3.2 Nonlinear filter generators

27. 6.3 Stream ciphers based on LFSRs
6.3.3 Clock-controlled generators

28. 6.3 Stream ciphers based on LFSRs
6.3.3 Clock-controlled generators

29. 6.3 Stream ciphers based on LFSRs
6.3.3 Clock-controlled generators

30. 6.3 Stream ciphers based on LFSRs
6.3.3 Clock-controlled generators

31. 6.3 Stream ciphers based on LFSRs
6.3.3 Clock-controlled generators

32. 6.4 Other stream ciphers
6.4 SEAL 2.0

33. 6.4 Other stream ciphers
6.4 SEAL 2.0

34. 6.4 Other stream ciphers
6.4 SEAL 2.0

35. 6.4 Other stream ciphers
6.4 SEAL 2.0

36. 6.4 Other stream ciphers
6.4 SEAL 2.0

37. 6.4 Other stream ciphers
6.4 SEAL 2.0

38. 6.4 Other stream ciphers
6.4 SEAL 2.0

39. Thank you!