Authenticity

Among confidentiality, anonymity, authorisation and non-repudiation, authenticity is one of the five goals of information security.

Authenticity is implemented by authentification on the one hand and by data integrity on the other hand. Authentification furnishes proof that a person is the one he or she claims to be. Data integrity is accomplished if the respective data remain unchanged.

Regarding the concept of Message Authentication Codes this means:

1. Authentification by applying the secret key
2. Data integrity by identicalness of calculated and received MAC