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CS Professional · Banking and Insurance - Laws and Practice · Digital Banking

Meera authenticates an electronic record by affixing her digital signature. Mohan, a stranger holding only her public key, wants to check it. Which statement is correct under Section 3 of the IT Act, 2000?

Mohan can verify it with Meera's public key. Section 3 of the IT Act, 2000 lets any person verify using the subscriber's public key, and the private and public keys are unique to her and form a functioning key pair.

  1. AMohan can verify the record using Meera's public key, and her private and public keys are unique to her and form a functioning key pairCorrect
  2. BOnly Meera can verify the record, since verification needs her private key
  3. CAuthentication works by a hash function alone, without any asymmetric crypto system
  4. DMohan can verify it only after the Controller reconstructs the original record from the hash result

Explanation

Section 3(3) says any person can verify the electronic record using the subscriber's public key, and 3(4) says the keys are unique to the subscriber and form a functioning key pair. Section 3(2) requires an asymmetric crypto system together with a hash function, and the hash result cannot be used to reconstruct the original record.

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