Method and system for verifying the authenticity of a first communication participants in a communications network
First Claim
1. A method of checking authenticity of a first communication subscriber in a communication network having first and second communication subscribers, comprising:
- forming a first error detection datum at the first communication subscriber;
transmitting an information item concerning a random datum from the first communication subscriber to the second communication subscriber;
forming a second error detection datum of the second communication subscriber;
forming an error information item at the second communication subscriber, using the second error detection datum and the information item concerning the random datum;
transmitting the error information item from the second communication subscriber to the first communication subscriber; and
checking the first and second error detection data at the first communication subscriber using the error information item.
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Accused Products
Abstract
In the method and the arrangement for checking the authenticity of a first communication subscriber in a communications network, a first fault information item is formed in the first communication subscriber using a fault detection data item of the first communication subscriber and an information item relating to a random data item. In a second communication subscriber in the communications network, a second fault information item is formed using a fault detection data item of the second communication subscriber and the information relating to the random data item. The authenticity of the first communication subscriber is checked using the first fault information and the second fault information.
69 Citations
24 Claims
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1. A method of checking authenticity of a first communication subscriber in a communication network having first and second communication subscribers, comprising:
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forming a first error detection datum at the first communication subscriber; transmitting an information item concerning a random datum from the first communication subscriber to the second communication subscriber; forming a second error detection datum of the second communication subscriber; forming an error information item at the second communication subscriber, using the second error detection datum and the information item concerning the random datum; transmitting the error information item from the second communication subscriber to the first communication subscriber; and checking the first and second error detection data at the first communication subscriber using the error information item. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A system to check authenticity in a communication network, comprising:
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a first communication subscriber to form a first error detection datum, and to transmit an information item concerning a random datum; a second communication subscriber to receive the information item concerning a random datum from the first communication subscriber, to form a second error detection datum of the second communication subscriber, to form an error information item using the information item concerning the random datum and the second error detection datum and to transmit the error information item to the first communication subscriber, for the first communication subscriber to check the second error detection datum and the first error detection datum using the error information item.
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24. A system for checking authenticity in a communication network having first and second communication subscribers, comprising:
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means for forming a first error detection datum for the first communication subscriber; means for transmitting an information item concerning a random datum, from the first communication subscriber to the second communication subscriber; means for forming a second error detection datum for the second communication subscriber; means for forming an error information item using the information item concerning the random datum and the second error detection datum; means for transmitting the error information item from the second communication subscriber to the first communication subscriber; and means for checking the first and second error detection data at the first communication subscriber, using the error information item.
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Specification