2. Consider the prime number p = 23 and g = 2 and assume they are public. During Diffie- Hellman key exchange process, Alice published her public key A = 12. Bob chooses a private key k = 5 and compute the public key to be sent to Alice. (a) What is the shaiſed secret key for both Bob and Alice? (b) Bob uses the EIGammal Cryptosystem to encrypt the message m = 7 and send it to Alice. What does Bob send to Alice (ciphertext)? (c) What is the plaintext message if Alice receives the ciphertext (4, 15)? You may need find Alice's private key a. Refer to Problem #1(5).
2. Consider the prime number p = 23 and g = 2 and assume they are public. During Diffie- Hellman key exchange process, Alice published her public key A = 12. Bob chooses a private key k = 5 and compute the public key to be sent to Alice. (a) What is the shaiſed secret key for both Bob and Alice? (b) Bob uses the EIGammal Cryptosystem to encrypt the message m = 7 and send it to Alice. What does Bob send to Alice (ciphertext)? (c) What is the plaintext message if Alice receives the ciphertext (4, 15)? You may need find Alice's private key a. Refer to Problem #1(5).
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Transcribed Image Text:2. Consider the prime number p = 23 and g = 2 and assume they are public. During Diffie-
Hellman key exchange process, Alice published her public key A
private key k
12. Bob chooses a
%3D
= 5 and compute the public key to be sent to Alice.
(a) What is the shaiſed secret key for both Bob and Alice?
(b) Bob uses the EIGammal Cryptosystem to encrypt the message m = 7 and send it to
Alice. What does Bob send to Alice (ciphertext)?
(c) What is the plaintext message if Alice receives the ciphertext (4, 15)? You may need find
Alice's private key a. Refer to Problem #1(5).
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