EBK COMPUTER NETWORKING
7th Edition
ISBN: 8220102955479
Author: Ross
Publisher: PEARSON
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Expert Solution & Answer
Chapter 8, Problem R10RQ
Explanation of Solution
Decrypting hash of a message:
Any function that can be used to map data of arbitrary size to data of a fixed size is called a hash function.
Hash functions provide message integrity as it is computationally infeasible to find any two messages with the same hash...
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The hash value of a message is safeguarded in what way? Does it function even when the secret key is not retrieved?
How is the hash value of a message protected? Does it function without the secret key?
How is a message's hash value protected? Does it work without retrieving the secret key?
Chapter 8 Solutions
EBK COMPUTER NETWORKING
Ch. 8 - Prob. R1RQCh. 8 - Prob. R2RQCh. 8 - Prob. R3RQCh. 8 - Prob. R4RQCh. 8 - Prob. R5RQCh. 8 - Prob. R6RQCh. 8 - Prob. R7RQCh. 8 - Prob. R8RQCh. 8 - Prob. R9RQCh. 8 - Prob. R10RQ
Ch. 8 - Prob. R11RQCh. 8 - Prob. R12RQCh. 8 - Prob. R13RQCh. 8 - Prob. R14RQCh. 8 - Prob. R15RQCh. 8 - Prob. R16RQCh. 8 - Prob. R17RQCh. 8 - Prob. R18RQCh. 8 - Prob. R19RQCh. 8 - Prob. R20RQCh. 8 - Prob. R21RQCh. 8 - Prob. R22RQCh. 8 - Prob. R23RQCh. 8 - Prob. R24RQCh. 8 - Prob. R25RQCh. 8 - Prob. R26RQCh. 8 - Prob. R27RQCh. 8 - Prob. R28RQCh. 8 - Prob. R29RQCh. 8 - Prob. R30RQCh. 8 - Prob. R31RQCh. 8 - Prob. R32RQCh. 8 - Prob. R33RQCh. 8 - Prob. P1PCh. 8 - Prob. P2PCh. 8 - Prob. P3PCh. 8 - Prob. P4PCh. 8 - Prob. P5PCh. 8 - Prob. P6PCh. 8 - Prob. P8PCh. 8 - Prob. P12PCh. 8 - Prob. P13PCh. 8 - Prob. P14PCh. 8 - Prob. P18PCh. 8 - Prob. P20PCh. 8 - Prob. P21PCh. 8 - Prob. P22PCh. 8 - Prob. P23P
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Similar questions
- How about encrypting an AES key using a secret password? Extend your justification for why you chose that particular answerKeyed hash functions are compared to hash functions. Check out a sample of a hash function with a single key.arrow_forwardCan you decrypt the hash of a message to get the original message? Explain your answer?arrow_forwardWhy is it impossible to decipher a message's hash?arrow_forward
- How is the hash value of a message protected? Is it possible to use it without obtaining the secret key?arrow_forwardWhich statement about the Hash function (H) is false: 1 1. For a message of any length, the size of the H function is the same. 2. The H function is produced of a message only 3. The H function allows you to detect changes in the message and authenticate the sender.arrow_forwardIs it possible to encrypt an AES key by using a common password? Justify the answer you gave.Check out the difference between the hash function and the keyed hash function. Check out this working example of a hash function with one key.arrow_forward
- What about encrypting an AES key with a secret password? Make a case for why your answer is correct.Look at the keyed hash function as an alternative to the hash function. Check out a sample hash function with a single key.arrow_forwardIn digital signature, the receiver uses the private key of the sender to decrypt the digital signature and restore the original hash of the message. True Falsearrow_forwardHow is the hash value of a message secured? Does it still function if you don't have the secret key?arrow_forward
- What’s wrong of designing a hash function that adds up the words of a message and uses the result as the hash output?arrow_forwardUse Python to program a hash with a couple of people and their interconnected birth years. Next, show the people's names and their birth years, and have the user enter one. Reverse the hash and show the birth years, having the user choose a birth year. Then, show the person's name for that birth year. Also, the user should have the option to add and delete entries.arrow_forwardIn what way does a hash provide a better message integrity check than a checksum?arrow_forward
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