Principles of Information Security (MindTap Course List)
6th Edition
ISBN: 9781337516938
Author: WHITMAN
Publisher: Cengage
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Question
Chapter 8, Problem 16RQ
Program Plan Intro
Cryptosystems:
It is a technique used to encrypt and decrypt data using keys. The user can send or receive data across insecure networks using this cryptosystems. This system may provide same or different keys for the sender and receiver.
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Is it possible to use software on a desktop computer to make secret keys for use in cryptographic protocols in a way that keeps them safe and lets them be used?
Is it possible to generate secret keys for use in cryptographic protocols on a desktop computer using software in a secure manner such that they may be used?
Is there desktop software that can reliably generate keys for use in cryptographic protocols?
Chapter 8 Solutions
Principles of Information Security (MindTap Course List)
Ch. 8 - Prob. 1RQCh. 8 - Prob. 2RQCh. 8 - Prob. 3RQCh. 8 - Prob. 4RQCh. 8 - Prob. 5RQCh. 8 - Prob. 6RQCh. 8 - Prob. 7RQCh. 8 - Prob. 8RQCh. 8 - Prob. 9RQCh. 8 - Prob. 10RQ
Ch. 8 - Prob. 11RQCh. 8 - Prob. 12RQCh. 8 - Prob. 13RQCh. 8 - Prob. 14RQCh. 8 - Prob. 15RQCh. 8 - Prob. 16RQCh. 8 - Prob. 17RQCh. 8 - Prob. 18RQCh. 8 - Prob. 19RQCh. 8 - Prob. 20RQCh. 8 - Prob. 1ECh. 8 - Prob. 2ECh. 8 - Prob. 3ECh. 8 - Prob. 4ECh. 8 - Prob. 5ECh. 8 - Prob. 1CEDQCh. 8 - Prob. 2CEDQCh. 8 - Prob. 1EDMCh. 8 - Prob. 2EDM
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- Part 1: Please answer the following questions about the fundamental of cryptography. Each question has only one correct answer. 1, Which description about block ciphers is NOT correct? Block ciphers encrypt the message block by block. A block cipher with a small block is vulnerable to the codebook attack. The encryption and decryption algorithms in block ciphers use the same secret key. The key length for block cipher should be very short to defend against the exhaustive key search attacks. 2, If the key length of a block cipher is 64 bits, what is the size of the key space? Hint: The key space consists of all possible keys. 64 264 232 2128 3, Modern block ciphers combine substitution S and permutation P operations to improve security. Based on the security rule, the cipher should not use consecutive substitutions or consecutive permutations. In the following combinations, which one violates the above security rule? ?1?1?2?2 B. ?1?1?2?2 C. ?1?1?2?2 4, Which…arrow_forwardIs it possible for software running on a desktop computer to produce secret keys that are both safe and secret, and which can then be used in cryptographic protocols?arrow_forwardIs it possible to use software on a desktop computer to make hidden keys for use in cryptographic protocols while still keeping the appropriate level of security?arrow_forward
- Answer the following question: An attack where information about the key or the plaintext is obtained by observing how long it takes a given implementation to perform decryption on various ciphertexts is known as what type of attack?arrow_forwardDoes desktop computer software exist that can reliably create secret keys for use in cryptography protocols?arrow_forwardWhat exactly is a "single point of failure" in terms of passwords?arrow_forward
- For Paillier cryptosystem, if you know the value of the public key (n = 391 and * ?g = 4886), what is the value of the corresponding private key (lamda, mu)arrow_forwardWhat is man-in-the-middle attack in Cryptography?arrow_forwardWhat is the difference between a block cipher and a stream cipher? What is the difference between an unconditionally secure cipher and a computationally secure cipher? What is the difference between a monoalphabetic cipher and a polyalphabetic cipher? Why is it important to study Feistel ciphers?arrow_forward
- Is there a way to safely create secret keys for use in cryptographic protocols using software on a desktop computer?arrow_forwardIn an RSA cryptosystem, you intercept a ciphertext C = 2022 sent to a user whose public key is (e = 27893, n = 124711). What is the plaintext M? Show your steps.arrow_forwardIn modern cryptography, the plaintext is converted to a binary cipher. Bit streams have their bits individually encrypted into ciphertext, whereas block streams have their bits grouped into blocks before encryption. In this article, we explore the stages that make up the existence of a modern cryptographic key.arrow_forward
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