Efficiency Simultaneous key Exchange-Cryptography Extraction from Public key in Fog-Cloud Federation-based Secure Offloading for Automatic Weather Stations Observing Systems

Considering that in automatic weather station systems, raw data is collected by sensors by AWSs, and these sensors themselves cannot process raw data. The data is sent to the CPS unsafely for processing, considering that the raw data in the wireless network is sent. No encryption operation or key exchange has been performed between the communication parties. At any moment, there is a possibility that a third party with an identity attack can be placed between AWS and CPS and listen to or manipulate the data sent. In this article, we have presented a new encryption method by combining the Jamal encryption system and the Diffie-Hellman key exchange algorithm, which, unlike the existing method, provides the ability to exchange keys for the sender and receiver from the public key so that there is no longer a need for encryption and key exchange from two algorithms. Be used differently. The simulation results of the proposed method against pervasive search attack show that the proposed method in the first scenario is 0.030141 seconds in the normal way and 1.241097 seconds in the parallel mode, and in the second scenario is, 5.112216 seconds in the normal manner and 6.724856 seconds in the parallel process compared to the ElGamal process against the attack. Comprehensive search resists.