METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING SECURE AND NON-SECURE DATA

摘要

A communications system, and a method suitable for use therein, are described which are suitable for transmitting and receiving both secure and non-secure data. The system comprises: means for transmitting data comprising both ciphered se-cure data and unciphered non-secure data; means for receiving transmitted data; means for deciphering the received data to pro-duce deciphered data; and means for: validating the deciphered data to produce a first validation result and outputting the deci-phered data depending upon the first validation result; or validating the received data to produce a second validation result and outputting the received data depending upon the second validation result; or validating the deciphered data to produce a first vali-dation result and outputting the deciphered data depending upon the first validation result, and also validating the received data to produce a second validation result and outputting the received data depending upon the second validation result.