| 摘要 |
A method of communicating data from a first transmitting station to a selected second receiving station in a network of stations adapted for communication with one another, said method comprising: locally storing a substantially unique key at each station, all the keys being known to users at all the stations; locally storing a common key symmetric message ciphering first algorithm at each station; generating at the first station a working key as a predetermined representation of the unique key which identifies the intended recipient station; ciphering the data to be transmitted by use of said working key in said first algorithm; and transmitting said ciphered data, whereby to permit deciphering of said ciphered data by the selected second station. An apparatus, and network, for this method are also disclosed. |
