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2. Bob wants to send a highly confidential message to Alice using public key cryptosystem. Bob encrypts his message using his own private key and sends the encrypted message to Alice. When Alice receives the message, she uses Bob's public key to read the message. However, the highly confidential message was also known to other people even though Alice did not reveal the message to anyone else. Bob was upset and concerned how other people managed to read the message. a) Explain how some other people managed to read the confidential message that was meant for Alice. b) If Bob persists in using public key cryptosystem, describe what he should do to prevent the loss of confidentiality of the message.

2. Bob wants to send a highly confidential message to Alice using public key cryptosystem. Bob encrypts his message using his own private key and sends the encrypted message to Alice. When Alice receives the message, she uses Bob's public key to read the message. However, the highly confidential message was also known to other people even though Alice did not reveal the message to anyone else. Bob was upset and concerned how other people managed to read the message. a) Explain how some other people managed to read the confidential message that was meant for Alice. b) If Bob persists in using public key cryptosystem, describe what he should do to prevent the loss of confidentiality of the message.

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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2. Bob wants to send a highly confidential message to Alice using public key cryptosystem. Bob encrypts his message using his own private key and sends the encrypted message to Alice. When Alice receives the message, she uses Bob's public key to read the message. However, the highly confidential message was also known to other people even though Alice did not reveal the message to anyone else. Bob was upset and concerned how other people managed to read the message. a) Explain how some other people managed to read the confidential message that was meant for Alice. b) If Bob persists in using public key cryptosystem, describe what he should do to prevent the loss of confidentiality of the message.
Transcribed Image Text:2. Bob wants to send a highly confidential message to Alice using public key cryptosystem. Bob encrypts his message using his own private key and sends the encrypted message to Alice. When Alice receives the message, she uses Bob's public key to read the message. However, the highly confidential message was also known to other people even though Alice did not reveal the message to anyone else. Bob was upset and concerned how other people managed to read the message. a) Explain how some other people managed to read the confidential message that was meant for Alice. b) If Bob persists in using public key cryptosystem, describe what he should do to prevent the loss of confidentiality of the message.
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