IEEE/ICACT20250026 Slide.14        [Big Slide]       Oral Presentation
In the fifth step, the user decrypts the received C1 using T2 to obtain the random number RIoT. In the sixth step, the user generates a random number Ruser to serve as an encryption key. In the seventh step, the user encrypts both RIoT, which was obtained by decrypting C1, and the newly generated Ruser to create C2. Finally, in the eighth step, the user sends the generated C2 to the IoT device.

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