COMMUNICATION EQUIPMENT FOR SECURE COMMUNICATION

摘要

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.

主权项

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, 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.