Abstract
With the increasing application of Beidou communication technology, the safety of the short message communication process of Beidou satellite navigation system becomes more and more important. Direct communication with Beidou short messages lacks reliable data security protection measures. In order to transmit Beidou short message safely and reliably, according to the characteristics of Beidou short message protocol and message structure, this paper proposes a security transmission system for Beidou short message based on sm9, which can meet the security requirements of the communication, and the cost investment is also greatly reduced.
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