| 摘要 |
A method and system for identifying digitally signed messages in a telecommunication system that includes a telecommunication network, a mobile station connected to the telecommunication network and which has an associated subscriber identity module, a network server connected to the telecommunication network, and a database connected to the network server and which stores a list of identification numbers for each mobile station. When a message is to be sent from, for example, a mobile station to the network server, a first authentication unit in the mobile station attaches to the message a message identification number that has been increased or incremented from the number attached to a previous message sent from the mobile station. The message with the attached identification number is then sent to a second authentication unit, as at the network server, in which the identification number is checked against the stored list of identification numbers to determine whether the message has already been received and, if not, the message is accepted. |
