Question

_________________is the characteristic of something having been provided by an authorized source. this concept encompasses non-repudiation, which is the inability of a party to deny or challenge the authentication of an interaction.

Answer 1

The answer is "Authenticity".

Authenticity is the characteristic of something having been given by an approved source. This idea incorporates non-revocation, which is the failure of a gathering to deny or challenge the validation of a collaboration. Authentication in non-repudiable connections gives evidence that these cooperations are remarkably connected to an approved source. 
For instance, a client will most likely be unable to get to a non-repudiable document after its receipt without likewise producing a record of this entrance.