COMMUNICATION EQUIPMENT FOR SECURE COMMUNICATION
First Claim
1. A user interface device (101, 201, 201a) comprising:
- a user interface (102) for receiving command actions from a user,a processor (104) for receiving a first digital data stream, for generating digital event data in accordance with the command actions directed to the user interface, and for combining the digital event data with the first digital data stream so as to form a second digital data stream, anda transmitter (105) for transmitting a third digital data stream to a data link,characterized in that the processor is arranged to encrypt the second digital data stream so as to form the third digital data stream in accordance with cryptographic control data accessible to the processor.
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Accused Products
Abstract
Communication equipment includes a communication device (112) and a user interface device (101), e.g. a remote speaker-microphone, interconnected via a short-range data link. The user interface device includes a user interface (102) for receiving commands from a user. The user interface device includes a processor (104) for generating event data in accordance with the commands and for combining the event data with a digital data stream whose information is to be transmitted. The processor encrypts the result in accordance with cryptographic control data accessible to the processor. The encrypted digital data stream is delivered to a transceiver of the user interface device in order to transmit it to the communication device. As the encryption is carried out by the processor in accordance with the cryptographic control data, the transceiver does not need provide cryptographic functionality and the communication equipment can flexibly support different cryptographic algorithms.
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Citations
21 Claims
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1. A user interface device (101, 201, 201a) comprising:
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a user interface (102) for receiving command actions from a user, a processor (104) for receiving a first digital data stream, for generating digital event data in accordance with the command actions directed to the user interface, and for combining the digital event data with the first digital data stream so as to form a second digital data stream, and a transmitter (105) for transmitting a third digital data stream to a data link, characterized in that the processor is arranged to encrypt the second digital data stream so as to form the third digital data stream in accordance with cryptographic control data accessible to the processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for providing secure communication between a user interface device of communication equipment and a communication device of the communication equipment, the method comprising the following actions in the user interface device:
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receiving (301) a first digital data stream the information carried by which is to be transmitted to the communication device, generating (302) digital event data in accordance with command actions directed to a user interface, combining (303) the digital event data with the first digital data stream so as to form a second digital data stream, and delivering (305) a third digital data stream to a transmitter of the user interface device so as to transmit the third digital data stream to the communication device via a data link, characterized in that the method comprises using (304) a processor for encrypting the second digital data stream so as to form the third digital data stream in accordance with cryptographic control data accessible to the processor. - View Dependent Claims (18)
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19. A computer program comprising computer executable instructions for controlling a programmable processor of a user interface device of communication equipment to:
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generate digital event data in accordance with command actions directed to a user interface of the, combine the digital event data with a first digital data stream so as to form a second digital data stream, and control a transmitter of the user interface device to transmit a third digital data stream to a data link, characterized in that the computer program further comprises computer executable instructions for controlling the programmable processor of the communication device to encrypt the second digital data stream so as to form the third digital data stream in accordance with cryptographic control data accessible to the programmable processor. - View Dependent Claims (20, 21)
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Specification