q12) How many keys are required to achieve authentication and confidentiality in public key cryptosystems? a. 1 b. 3 c. 2 d. 4
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- 1) Using a suitable example, explain what is a cryptographic key, and what is it used for? 2) Describe three basic operations in cryptography. 3) Using examples, differentiate between symmetric and asymmetric encryption? 4) Using examples, differentiate between a digital signature and a digital certificate?7) Regarding performance, symmetric cryptosystems are much better (faster) than asymmetric (public key) cryptosystems. A True b Falsei. Why is encryption and decryption important in everyday life?Explain the methods encryption & decryption with an example. ii. Differentiate between Block Cipher and Stream Cipher; explain their relative strengths, weaknesses? iii. Differentiate between Symmetric Key and Asymmetric key cryptography.Write five examples of each type.
- Question 12 What authentication processes could I use to verify the identity of the person from who I am receiving email and other digital communication and to verify my identity to people I'm sending communications to? What algorithms could be used? Ref: An Introduction to Cryptography - Phil Zimmermann, S/MIME for message signing and encryption1. Explain how cryptographic mechanisms can be used to guarantee the following basic security services.i. Confidentialityii. Authenticationiii. Integrityiv. Non-repudiationv. Non-replay 2. Show the result of encrypting M = 4 using the public key (e; n) = (3; 77) in the RSA cryptosystem. 3. Firewalls use access Control Lists (ACL). Explain what is meant by an ACL and typical contents. 4. Explain what is meant by the term “salt” in relation to cryptography. You should discuss how it is used to make it more difficult to crack passwords. 5. Explain what is meant by a digital signature and describe how it is generated.1. Explain how cryptographic mechanisms can be used to guarantee the following basic security services.i. Confidentialityii. Authenticationiii. Integrityiv. Non-repudiationv. Non-replay 2. Show the result of encrypting M = 4 using the public key (e; n) = (3; 77) in the RSA cryptosystem. 3. Firewalls use access Control Lists (ACL). Explain what is meant by an ACL and typical contents. 4. Explain what is meant by the term “salt” in relation to cryptography. You should discuss how it is used to make it more difficult to crack passwords.
- Encryption - what is it and how does it work? Distinguish between private and public key encryption by providing definitions and examples. How is sender authentication and secrecy provided by public-key cryptography?1 a) Relevance of secret key cryptography to modern crypto: b) Relevance of secret key cryptography to modern cyber security.Question 17 mammi .Kerberos is an authentication protocol based on ______________ symmetric key cryptography asymmetric key cryptography Caesar ciphers Diffie-Hellman Key Exchange Full explain this question and text typing work only We should answer our question within 2 hours takes more time then we will reduce Rating Dont ignore this line
- Look for "Announcing the Advanced Encryption Standard (AES)" online. To be on the safe side, check out the FIPS 197 standard document. Detail the creation and implementation of this cryptosystem in a few sentences.. Analyze any 5 Symmetric Cryptosystems and prepare the report as per the following table format. Symmetric Cryptosystems Methodology Advantages Disadvantages Security 2. Encrypt and Decrypt the following text “Cryptography is Interesting “using Caesar Cipher (k=8) 3. Encrypt the following Plain text “What do you like the most” using Play Fair Cipher (Keyword is “Monarchy”) 4. List out at least four difference between Substitution Cipher and Transposition Cipher. 5. Give the differences between Public Key Cryptography and Private Key Cryptography. List and explain three advantages of Public Key Cryptography. 6. Prepare a Technical report on the following topics: * Biometrics Technology: * Firewall: * Wireless Security: * Steganography: References: Web links/ Book reference / E-library.What can authentication do? We'll discuss authentication techniques' merits and cons.