Which of the following are used to generate a message digest by the network…

2017

Which of the following are used to generate a message digest by the network security protocols? (P) SHA-256 (Q) AES (R) DES (S) MD5

  1. A.

    P and S only

  2. B.

    P and Q only

  3. C.

    R and S only

  4. D.

    P and R only

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Correct answer: A

Message digests are created using cryptographic hash functions. SHA-256 (P) and MD5 (S) are hash functions designed for this purpose. AES (Q) and DES (R) are encryption algorithms used for confidentiality, not integrity hashing. Option A correctly identifies the pairing of P and S.

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