Securing Medical Data in 5G and 6G via Multichain Blockchain Technology using Post-Quantum Signatures

Slicing a network is a key innovative feature to deliver 5G (the fifth generation) services. 5G aims to enhance mobile broadband, deliver massive machine-type and low latency communications with ultra-reliability. This generation manages the huge scale of the devices of the Mobile Internet of Things (MIoT). 5G has been invented for controlling security addressed to the threats found in 2G/3G/4G networks consequently. 5G preventive measures include enhanced authentication capabilities, subscriber identity protection, and additional security techniques. New 5G network technologies introduced new threats for the industrial organizations. GSMA (The GSM Association) announced that Mobile Internet of Things (IoT) requires more security in 5G as the number of IoT devices and connections are exponentially increasing. "The IoT needs to be securely coded, deployed and managed throughout its lifecycle". Common IoT architecture is subjected to the following common attacks: 1) attacks on IoT devices through the running application; 2) remote attacks over the internet; 3) physical attacks; 4) attacks through the cloud 5) attacks through Wi-Fi or mobile air interface. Moreover, IoT devices are being used to form DDoS attacks where each IoT device forms the specific data resulting a volume-based attacks. Blockchains are considered as a main solution to solve various issues in 5G such as Mobile IoT security problems and Electronic Healthcare Records sharing problems. We analyse Hashing based Post-Quantum Signatures for enhancing blockchain security.