Beidou Short Message Communication Encryption Scheme with Improved SM4 Algorithm

Beidou short message function is widely used in all walks of life, and the security of its data transmission has become particularly important. Three-party hijacking, resulting in compromised data confidentiality and integrity. In response to this problem, this paper proposes a Beidou short message encryption scheme that optimizes the SM4 algorithm, which can solve the security problem of Beidou short message data transmission to a certain extent.