A NetKey/ IDKey is personalized by assigning a public key from the NetKey/ IDKey to identity attributes of the NetKey/ IDKey owner in a certificate.

As a rule, such assignment takes place by sealing this link using an electronic signature. This sealing creates a certificate from an aggregation of identity attributes.

The public key becomes another identity attribute. The connection to the NetKey/ IDKey is the link between the public key and the secret key.