Encryption method applied to MQTT-SN protocol
An encryption method and protocol technology, which is applied in the encryption field of the MQTT-SN protocol, can solve problems such as unguaranteed messages, invisible payloads, and unrealized authentication of publishers and subscribers, so as to improve security and protect privacy.
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[0045] Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0046] The present invention uses "0X1E" as the new message type, which means that the published payload data is encrypted using the CP-ABE algorithm, and the overall process is as follows figure 1 As shown, it specifically includes four stages: initialization, encryption, release, and decryption.
[0047] 1. Initialization phase:
[0048] Before the publish / subscribe client can communicate normally, it needs to be initialized first, that is, the publish / subscribe client completes registration with the proxy server and establishes a connection with the proxy server. The registration process is as figure 2 Shown.
[0049] Step 1-1: The publish / subscribe client sends a registration request to the proxy server, that is, provides identity authentication information. The format of the identity authentication information submitted by the publis...
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