Which of the following concepts is enforced by certifying that email communications have been sent by who the message says it has been sent by?

The correct answer is B. Non-repudiation. Non-repudiation ensures that a party cannot deny the authenticity of their signature or the sending of a message. In email, technologies like digital signatures (S/MIME, DKIM) provide cryptographic proof that a specific sender sent a specific message, making it impossible for…

General security concepts

Question

Options

AKey escrow
BNon-repudiation
CMultifactor authentication
DHashing

How the community answered

(28 responses)

A
4% (1)
B
89% (25)
C
7% (2)

Explanation

Non-repudiation ensures that a party cannot deny the authenticity of their signature or the sending of a message. In email, technologies like digital signatures (S/MIME, DKIM) provide cryptographic proof that a specific sender sent a specific message, making it impossible for the sender to later deny it. Key escrow involves storing encryption keys with a trusted third party. Multifactor authentication verifies identity at login but doesn't prove message origin. Hashing verifies data integrity (the message wasn't altered) but doesn't prove who sent it.

Topics

#non-repudiation#email security#digital signatures#identity verification

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