the gateway generate a session key using the left n bit and a random
number from the 3 n-bits and ends the verification.
3.2. Smart Device Registration
Step 1. A user who tries to control the smart node through a smart device generates a random
number and M4 and Hs, and then sends M4, IDsd, Hs, and TS to the gateway.
Step 2. The gateway that received this decodes M4 and verifies Hs. After that, it searches the session
key with the smart nodes and sends the encrypted Rs and IDs.
Step 3. The smart node…
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