digital signature

American  

noun

Digital Technology.

1. an encrypted digital code appended to an electronic document to verify that it was created by a known source and has not been altered.

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digital signature British  

noun

1. computing electronic proof of a person's identity involving the use of encryption; used to authenticate documents

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Etymology

Origin of digital signature

First recorded in 1975–80

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Example Sentences

See Examples For:

digital signature

Starting Wednesday, newly issued driver’s license and identification cards will include additional features, including a first-in-the-nation digital signature, according to the Department of Motor Vehicles.

From Los Angeles Times ● Oct. 2, 2025

Now, another potential defense is gaining traction: digital watermarking, or the insertion of an indelible, covert digital signature into every piece of AI-produced content so the source is traceable.

From Scientific American ● Aug. 8, 2023

Some researchers are working on “watermarking”—creating an imperceptible digital signature in the AI’s output.

From Science Magazine ● Apr. 10, 2023

The data is cryptographically sealed into the file; tampering with the image breaks the digital signature and prevents the credentials from appearing when using trusted software.

From New York Times ● Apr. 8, 2023

NFTs have a unique digital signature so they can be bought and sold using traditional currency or crypto currency, such as Bitcoin.

From BBC ● Feb. 13, 2022

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