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Under Section 3 of the Information Technology Act, 2000, the digital signature mechanism employs:
Answer & Solution
Correct answer: D.
1. Section 3(2) of the IT Act provides that authentication of the electronic record shall be effected by the use of asymmetric crypto system and hash function.
2. Asymmetric crypto means a system of a secure key pair: a private key for creating the digital signature and a public key for verifying it (Section 2(1)(f)).
3. The hash function transforms the electronic record into another electronic record.
4. Verification is done by use of the public key of the subscriber (Section 3(3)).
_Source: ICSI CS Executive Paper 1 (Jurisprudence, Interpretation & General Laws) — Lesson 17: Information Technology Act, 2000, pp. 407-419._
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