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Certificate-based authentication method and communication network

A communication network and certificate technology, applied in the field of communication network, can solve the problems of long-term invalid certificate recovery and complicated certificate recovery.

Active Publication Date: 2016-10-19
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the revocation of certificates is very complicated, because certificate revocation orders must be issued and distributed for this
In addition, a revoked certificate is invalid for a long time and cannot be restored again

Method used

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  • Certificate-based authentication method and communication network
  • Certificate-based authentication method and communication network
  • Certificate-based authentication method and communication network

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Experimental program
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Embodiment Construction

[0029] figure 1 A communication network N with a plurality of computers is shown schematically, the computers participating in the certificate-based authentication described below being designated by R1 , R2 and R3 . In this case, computer R1 corresponds to a first user within the meaning of claim 1 , computer R2 corresponds to a second user and computer R3 corresponds to a third user. The user is not necessarily a computer, but the user can also be any other communication unit, such as an automation unit or a machine. An automation cell may in particular be a corresponding part of an automation plant, which carries out an automated manufacturing or production process. The individual automation units can be, for example, a programmable control unit, a sensor, electric vehicles, rechargeable batteries for electric vehicles, electricity meters, energy automation devices, computer tomographs, X-ray devices or the like. All automation units are characterized in that they communi...

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PUM

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Abstract

A method is disclosed for certificate-based authentication, in which a first subscriber authenticates himself to a second subscriber using a digital certificate associated to the first subscriber. The certificate specifies requirement(s) and the fulfillment of a requirement is ensured by a third subscriber. Within the framework of the authentication by the second subscriber, a validity condition is checked, and the certificate is classified as valid if the validity condition is fulfilled, based on the issue and / or absence of issue of the requirement(s) specified in the certificate by the third subscriber. Requirements may be used to restrict the validity of the certificate. The validity of a certificate can thereby be controlled in a simple and flexible manner without explicitly defining the validity in the certificate. The method can be used for authentication in any technical field, e.g., to authentication subscribers in the form of components of an automation system.

Description

technical field [0001] The invention relates to a certificate-based authentication method in which a first user is authenticated to a second user by means of a digital certificate assigned to the first user. The invention also relates to a communication network for such a method. Background technique [0002] Digital certificates are known from the prior art. It contains entity identity information in the form of persons or organizations or machines for which certificates are issued. Here and below, the concept of a user is used, to which a certificate can be assigned. In this regard, the user can be a computer or a machine, and a certificate is issued for the user. Likewise a user may refer to a computer or machine that manages the credentials of a person or organization. Assign certificates to computers or machines through the authority of certificate management. [0003] A certificate contains a public key for the corresponding entity, and the owner of the certificat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
CPCH04L9/3268H04L63/0823
Inventor R·法尔克S·弗里斯
Owner SIEMENS AG