| 摘要 |
<p>The present invention is concerned with a method for authenticating short messages. A MAC is calculated for a message by a sending module. The length of the MAC is limited. The MAC is transmitted along with the message to a receiving module via a communication link. The receiving module calculates a MAC independently for the received message. If the calculated MAC matches the received MAC, the received message is declared provisionally authentic. The message is declared fully authentic when a predefined number of subsequent messages have been declared provisionally authentic.</p> |
