The term revocation means revocation and is used in connection with the revocation of secret keys
.If a user loses his secret key, the key becomes known or is misused, the key pair must be revoked. This is done by the user in conjunction with the certification authority (CA), which revokes the validity, and publishes the certificate number in a revocation document. To ensure that the revocation is not misused, a password
for therevocation is agreed when the certificate is applied for.
Irrespective of this, the certification authority can revoke the certificate on its own initiative in the event of misuse.