Authentication of messages in a communication system
First Claim
1. A method in a communication system wherein a serving controller is configured to support a first security mechanism and at least one other security mechanism, the method comprising:
- sending a request for registration from a user equipment to a serving controller;
determining, based on the request, in a second controller that the user equipment supports a second security mechanism other than a first security mechanism;
sending from the second controller to the serving controller an indication that the second security mechanism than the first security mechanism is used by the user equipment; and
sending a challenge in accordance with the second security mechanism from the serving controller to the user equipment.
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Accused Products
Abstract
In a communication system wherein a serving controller may be configured to support a first security mechanism and at least one other security mechanism. A request for registration is sent from a user equipment to the serving controller where after it is determined in a second controller that the user equipment supports another security mechanism than the first security mechanism. The second controller may then send to the serving controller an indication that another security mechanism than the first security mechanism is used by the user equipment. The serving controller then sends a challenge in accordance with the other security mechanism to the user equipment.
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Citations
25 Claims
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1. A method in a communication system wherein a serving controller is configured to support a first security mechanism and at least one other security mechanism, the method comprising:
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sending a request for registration from a user equipment to a serving controller;
determining, based on the request, in a second controller that the user equipment supports a second security mechanism other than a first security mechanism;
sending from the second controller to the serving controller an indication that the second security mechanism than the first security mechanism is used by the user equipment; and
sending a challenge in accordance with the second security mechanism from the serving controller to the user equipment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A communication system comprising:
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a serving controller configured to accept registrations of user equipments and to support at least two different security mechanisms; and
means for providing the serving controller with information regarding a security mechanism supported by a user equipment that has requested for registration to the serving controller, wherein the serving controller is configured to send a challenge in accordance with a determined security mechanisms to the user equipment and to authenticate a message from the user equipment based on a response to the challenge included in the message. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. A proxy controller for a communication system, the proxy controller being configured to forward registrations of user equipments to a serving controller, to determine a security mechanism supported by a user equipment that has requested for registration to the serving controller, and to signal information to the serving controller regarding the security mechanism supported by the user equipment.
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25. A communication system comprising:
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first sending means for sending a request for registration from a user equipment to a serving controller;
determining means for determining, based on the request, in a second controller that the user equipment supports a second security mechanism other than a first security mechanism;
second sending means for sending from the second controller to the serving controller an indication that the second security mechanism other than the first security mechanism is used by the user equipment; and
third sending means for sending a challenge in accordance with the second security mechanism from the serving controller to the user equipment.
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Specification