Digital Signature

An asymmetric key operation where the private key is used to digitally sign data and the public key is used to verify the signature. Digital signatures provide authenticity protection, integrity protection, and non-repudiation.
SOURCE: SP 800-63

A nonforgeable transformation of data that allows the proof of the source (with non-repudiation) and the verification of the integrity of that data.
SOURCE: FIPS 196

The result of a cryptographic transformation of data which, when properly implemented, provides the services of:
1. origin authentication,
2. data integrity, and
3. signer non-repudiation.
SOURCE: FIPS 140-2

The result of a cryptographic transformation of data that, when properly implemented, provides a mechanism for verifying origin authentication, data integrity, and signatory non-repudiation.
SOURCE: FIPS 186-3

The result of a cryptographic transformation of data that, when properly implemented, provides origin authentication, data integrity, and signatory non-repudiation.
SOURCE: SP 800-89

Cryptographic process used to assure data object originator authenticity, data integrity, and time stamping for prevention of replay.
SOURCE: CNSSI-4009