Question: What type of cipher is a Caesar cipher? 1 2 . What is the difference between a block and a stream cipher? 1 3 .

What type of cipher is a Caesar cipher?
12. What is the difference between a block and a stream cipher?
13. ECC is classified as which type of cryptographic algorithm?
14. What is the key point of Kerckhoffss second principle?
15. Whats a substitution cipher?
16. What are the main differences between symmetric and asymmetric key cryptography?
17. Explain how 3DES differs from DES.
18. How does public key cryptography work?
19. Try to decrypt this message using the information in this chapter: V qb abg srne pbzchgref . V srne gur ynpx bs gurz.-Vfnnp Nfvzbi.
20. How is physical security important when discussing the cryptogenic security of data?

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