that Bob's RSA modulus is mB = 187. (a) If Bob's public exponent is eg = 13 and Alice wants to encrypt the message-signature pair (x, o) = (70, 21), calculate her encrypted pair. (b) If Bob's private exponent is dB ciphered message-signature pair (11, 69), what are the original plaintext and signature? Is this a valid message-signature pair? 37 and he receives the en- %3D

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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Question 2 a and b show work
313
(54, 89). Does
the pair has been altered?
that Bob's RSA modulus is mB = 187.
(a) If Bob's public exponent is eg = 13 and Alice wants to encrypt the
message-signature pair (x, o) = (70, 21), calculate her encrypted
pair.
37 and he receives the en-
(b) If Bob's private exponent is dB
ciphered message-signature pair (11, 69), what are the original
plaintext and signature? Is this a valid message-signature pair?
3. You have received the following message and signature pairs that pur
port to be from a person whose RSA modulus is 2573 and whose publi
exponent is 59. Which message-signature pair is valid?
(a) = 423, ỹ = 2123
(b)
%3D
Transcribed Image Text:313 (54, 89). Does the pair has been altered? that Bob's RSA modulus is mB = 187. (a) If Bob's public exponent is eg = 13 and Alice wants to encrypt the message-signature pair (x, o) = (70, 21), calculate her encrypted pair. 37 and he receives the en- (b) If Bob's private exponent is dB ciphered message-signature pair (11, 69), what are the original plaintext and signature? Is this a valid message-signature pair? 3. You have received the following message and signature pairs that pur port to be from a person whose RSA modulus is 2573 and whose publi exponent is 59. Which message-signature pair is valid? (a) = 423, ỹ = 2123 (b) %3D
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