Access method and communication system for accessing a protected communication service
First Claim
1. An access method for accessing a protected communication service via a public communication network by means of a secure communication network, whereby the secure communication network is based on user groups, comprising the steps of:
- defining an access group having access to the communication service based on the user groups of the secure communication network;
generating a group key for all members of the access group;
providing the group key to a member of the access group via the secure communication network; and
accessing the protected communication service via the public communication network using the group key;
wherein the step of defining an access group having access to the communication service based on the user groups of the secure communication network comprises the step of adding a user group to the access group;
wherein the user groups have a hierarchical structure and the step of adding a user group to the access group comprises adding the user group and all user sub-groups, which are hierarchically below the added user group.
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Abstract
An access method for accessing a protected communication service via a public communication network by using a secure communication network, whereby the secure communication network is based on user groups, including defining an access group having access to the communication service based on the user groups of the secure communication network, generating a group key for all members of the access group, providing the group key to a member of the access group via the secure communication network, and accessing the communication service via the public communication network using the group key, is provided. A communication system including a secure communication network based on user groups, a public communication network, a protected communication service, and an access server for managing access rights to the communication service, whereby the communication system implements the above method is further provided.
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Citations
13 Claims
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1. An access method for accessing a protected communication service via a public communication network by means of a secure communication network, whereby the secure communication network is based on user groups, comprising the steps of:
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defining an access group having access to the communication service based on the user groups of the secure communication network; generating a group key for all members of the access group; providing the group key to a member of the access group via the secure communication network; and accessing the protected communication service via the public communication network using the group key; wherein the step of defining an access group having access to the communication service based on the user groups of the secure communication network comprises the step of adding a user group to the access group; wherein the user groups have a hierarchical structure and the step of adding a user group to the access group comprises adding the user group and all user sub-groups, which are hierarchically below the added user group. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification