ICT digital signature authenticity – UGC NET Question

A digital signature uses algorithms and keys to bind the identity of a signer to a digital document in a way that tampering can be detected. It is legally recognised in many jurisdictions and supports secure e governance and e commerce. Unlike a mere image of a handwritten name, a digital signature has cryptographic strength. Thus, the method described is a digital signature.

Option A:
Option A is correct because digital signature is the standard term for cryptographically generated signatures used in secure electronic transactions.

Option B:
Option B, manual, signature refers to handwritten marks on paper and does not inherently support electronic verification or integrity checks.

Option C:
Option C, scanned, signature is just a picture of a manual signature and can be copied or altered without cryptographic safeguards.

Option D:
Option D, symbolic, signature is not a formal category in information security and could refer to any representation, lacking precise meaning.