Computer Networks · Network Security
Official IIT answer key · IISc Bangalore · Audited Aug 2026
GATE CSE 2016 Set 1 Q52 · MCQ · 2 marks
Key concept
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Topic notes
Network Security in GATE CS is tested primarily through core concepts of public-key cryptography, digital signature protocols, and cryptographic attacks. Questions focus on the mechanics of asymmetric encryption (specifically RSA key generation and modular arithmetic) and the correct application of private/public keys for digital signing, message digests, and vulnerability analysis.
Full Network Security guide →Consider that B wants to send a message m that is digitally signed to A. Let the pair of private and public keys for A and B be denoted by Kx- and Kx+ for x = A, B, respectively. Let Kx(m) represent the operation of encrypting m with a key Kx and H(m) represent the message digest. Which one of the following indicates the CORRECT way of sending the message m along with the digital signature to A?
Topic-wise GATE CS PYQs with verified steps
Independent practice explanation verified by the GateAI team. GATE is conducted by the IITs; question text follows the official paper.
