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Computer Networking: A Top-Down Approach (7th Edition)
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 1 If (n.c)=(143,7) is the public key for RSA. What is the private key? Question 2 in the previous problem, you computed the private key "d" from the public key "(n.e)". If RSA is to be secure, this should not be possible because everyone knows the public key. Explain why this was possible. ORSA is not secure at all. Because only "n" is known, "e" is also part of the private key. The example was not realistic. Because only "e" is known. "n" is also part of the private key. The example was not realistic. It was possible because the numbers involved were small, if the numbers were large, it will be unfeasible to computed the private key. The RSA is just a mathematical system, it is not use in reality because you can always compute the private key from the public key. This is one of the weakness of RSA you can always compute the private key. The RSA is old (1977) and it is not in use today because of this weakness.
Transcribed Image Text:Question 1 If (n.c)=(143,7) is the public key for RSA. What is the private key? Question 2 in the previous problem, you computed the private key "d" from the public key "(n.e)". If RSA is to be secure, this should not be possible because everyone knows the public key. Explain why this was possible. ORSA is not secure at all. Because only "n" is known, "e" is also part of the private key. The example was not realistic. Because only "e" is known. "n" is also part of the private key. The example was not realistic. It was possible because the numbers involved were small, if the numbers were large, it will be unfeasible to computed the private key. The RSA is just a mathematical system, it is not use in reality because you can always compute the private key from the public key. This is one of the weakness of RSA you can always compute the private key. The RSA is old (1977) and it is not in use today because of this weakness.
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