Method for lightweight security synchronization in smart sensor network
A smart sensor, lightweight technology, applied in the field of communication, can solve the problems of high energy consumption, time synchronization method does not fully support communication protocols, large number of exchanges, etc.
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[0062] This embodiment provides a lightweight security synchronization method in an ISO / IEC / IEEE21451 smart sensor network, including the following steps:
[0063] Step S1, authentication phase:
[0064] The sensor and the application will broadcast authentication messages between the two, and the form of the broadcast message is as follows, {U ID , K N ,ExpT,SIG SK [h(U ID / / ExpT / / K N )]}, where U ID Indicates the ID of the node, K N Represents the key of the node, ExpT represents the deadline for dynamic adjustment, h(...) is the hash value of the above three information obtained through a hash function, SIG Sk [...] represents a signature obtained by a private key.
[0065] The details of the certification phase are as follows, such as figure 1 . First, the application generates the U ID 、K N , ExpT, SIG i And broadcast the authentication message, the sensor node will verify the validity of the signature of the application node and the identity of the applicatio...
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