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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- Answer the following questions: a) Symmetric key cryptography b) Asymmetric key cryptography c) How both authenticity and confidentiality is achieved while encrypting and decrypting messages using public and private keys. d) How are messages digitally signed? e) What is the function of a certification authority? f) How can we protect data while it is in use?Cryptography involves five important concepts, integrity, confidentiality, authentication, non-repudiation, and digital signatures. Please describe the technical process, in detail, that involves sending an encrypted email from a sender to a receiver. Be sure to include and describe the technical details for each of the five concepts and the cryptography that takes place. (i.e SHA, AES, RSA, etc.). Please include in our discussion what the difference between a hashing algorithm and an encryption.Describe in details: Is public-key (asymmetric) encryption more secure from cryptanalysis than symmetric encryption?
- 31 Explain different authentication methods and protocol.[1] Compare different token-based user authentication mechanisms with their advantages and disadvantages. Please give me best correct answer You can use (COMPUTER SECURITY PRINCIPLES AND PRACTICE Second Edition William Stallings)q8- Q8. Public Key Infrastructure (PKI)-based authentication is a technology for authenticating users and devices (entities) in the digital world. The idea is to have one or more trusted parties (Certificate Authorities) digitally sign certificates to guarantee a particular cryptographic key belongs to a particular entity. That private key can then be used as the entity’s identity. Describe 2 threats applicable to PKI-based authentication.
- How does "authenticated encryption" combine confidentiality and authentication in cryptosystems?Question 1 Which of the three protections ensures that only authorized parties can view information? (Note: choose the best fit answer) Question 1 options: a) confidentiality b) security c) integrity d) availability Question 2 Select the information protection item that ensures that information is correct and that no unauthorized person or malicious software has altered that data. Question 2 options: a) identity b) integrity c) availability d) confidentiality Question 3 What type of cryptography uses two keys instead of just one, generating both a private and a public key? Question 3 options: a) shared b) open c)…Public key cryptography has a number of strengths and weaknesses relative to symmetric key cryptography Please make two lists: strengths and weaknesses. In the first list (strengths) put all the things that public key does better than symmetric key (generally speaking). Include things that are not possible at all with symmetric key cryptography. In the second list (weaknesses) give some areas or respects in which public key algorithms are less advantageous than symmetric key methods.
- Comparing public-key encryption to symmetric encryption, what are some of the advantages and disadvantages of utilizing public-key encryption?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 encryptionWhat are the pros and cons of using symmetric encryption techniques? When choosing an encryption method, what factors should be taken into account?
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