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The key of a key pair used to verify a digital signature and listed in the Digital Signature Certificate is

  • A.public key
  • B.private key
  • C.can be either public or private key
  • D.neither public or private key

Answer: A

It is the public key.

The IT Act defines the public key as the key of a key pair used to verify a digital signature and listed in the Digital Signature Certificate. Its partner, the private key, is the key used to create a digital signature and is kept secret by the subscriber. Anyone can check a signature with the public key published in the certificate, but only the holder of the private key could have made it.

So the private key is never listed in the certificate, and the key described cannot be 'either' or 'neither'.

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