| 摘要 |
A first subscriber authenticates himself to a second subscriber with a certificate associated to the first subscriber. The certificate specifies one or several characteristics, which have to be fulfilled by the second subscriber. In the course of the authentication, it is verified using the certificate whether the second subscriber fulfills the characteristics, wherein a criterion required for successful authentication is that the second subscriber fulfills the characteristics(s). Characteristics of the second subscriber are verified in the framework of the authentication process, the second subscriber representing the authenticator with respect to whom the authentication is carried out. In this way, certificates for authentication dedicated communication links between two communication partners can be determined. The method can be used for any subscribers in a communication network, e.g., representing components of an automation system, such as, for example, control devices, field devices, sensors, actuators and the like.
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