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Computer Networking : A Top-Down Approach

Computer Networking : A Top-down Approach

Authors: James F. Kurose, Keith W. Ross
ISBN: 9780132856201
Edition: 6
Chapter: Security In Computer Networks
Exercise: Review
Question: 1

 

Question

What are the differences between message confidentiality and message integrity? Can you have confidentiality without integrity? Can you have integrity without confidentiality? Justify your answer.

Answer

Message confidentiality:

1) If any attacker cannot understand the encrypted message is called message confidentiality.

2) Send and receiver can understand the message only. So it secure more.

3) Using encrytpion and decryption methods to find the confidentiality.

Message Integrity:

1) The message is changed by the receiver use the process is called message integrity.

2) In this case original message is not changed in the transfer time.

3) Using summing methods are to find the message integrity.

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No, Both message confidentiality and interity are different independent processes.

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Yes, message integerity  without confidentialy. Some times hackers are possible to change message in the case of message integerity. Then confidentiality of message is damaged.

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