Implementation Multi User Secret Key Generation in Outdoor Environment to Secure Image Transmission

The proliferation of IoT devices simultaneously increases security vulnerabilities in wireless data transfer. This research presents a Multi-User Secret Key Generation system implemented in real time on outdoor and moving devices. The proposed approach uses Received Signal Strength Indicator (RSSI) as a source of entropy, employs dynamic threshold quantization and BCH error correction to correct bit errors to achieve 0 % KDR. The system undergoes testing at several distances and mobility situations with Raspberry Pi and Jetson Nano devices, the generated key will be tested for feasibility with the NIST Test, then the SHA-128 process is carried out to strengthen the confidentiality of the generated key, so that in the final result it is found that the key of the carrier and node is not the same for all scenarios.