ENGLISH
REFERENCE

digital signature

compound.
B2 Upper Intermediate Security
Definition

compound. a secure electronic way to prove that a document or message is real and has not been changed. It works like a handwritten signature but uses computer code to keep things safe.

compound. a mathematical scheme for verifying the authenticity and integrity of a digital message or document. It provides a high level of assurance that the sender is who they claim to be and that the content has not been altered in transit.


SIMPLE

You need a digital signature to finalize the online contract.

CONTEXTUAL

The bank requires a digital signature on all electronic loan applications to prevent fraud and ensure the documents are legally binding.

COMPLEX

By utilizing public-key cryptography, a digital signature ensures non-repudiation, meaning the signer cannot later deny having sent the message once the verification process is complete.

Origin

A compositional term formed from the adjective digital, derived from the Latin digitus, and the noun signature, from the Latin signare. The pairing follows the established linguistic pattern of applying physical authentication terminology to electronic data processing.

Usage

Often used in the context of cybersecurity, legal contracts, and software distribution.

Pitfall

I scanned my handwritten signature as a digital signatureI used a digital signature to sign the PDFA digital signature is an encrypted electronic code, not a scanned image of a physical signature (which is called an electronic signature).

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