Eccouncil Exam 312-50v11 Topic 6 Question 35 Discussion

Actual exam question for Eccouncil's 312-50v11 exam

Question #: 35
Topic #: 6

Bob wants to ensure that Alice can check whether his message has been tampered with. He creates a checksum of the message and encrypts it using asymmetric cryptography. What key does Bob use to encrypt the checksum for accomplishing this goal?

AAlice's private key

BAlice's public key

CHis own private key

DHis own public key

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Suggested Answer: B

by Virgina at May 07, 2022, 04:14 AM

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Anojithan

2 years ago

It should be Bob's own Private key. Because, Then only anyone or the intended receiver can decrypt the checksum and verify. It also makes sure the sender is Bob, as the key involved is Private key of Bob which can be only used by him. Public key of Alice can be also used by an attacker encrypt the falsified checksum.

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