Quantum-resistant Blockchain

The aim of this thesis is to explore existing post-quantum algorithms in the implementation on blockchain technologies. The choice of which blockchain to study fell on on a project founded by the Linux Foundation in 2015. A non-profit association profit and the largest open source organisation in the world. Such a project by the name of Hyperledger Fabric, is open source and is considered the modular blockchain framework for enterprise blockchain platforms. We will then replace the cryptographic primitives vulnerable new post-quantum algorithms, which are resilient and secure to a possible future advent of quantum computing. The first phase concerns the analysis of the Fabric framework by thoroughly understanding its mechanics and identifying within the various use cases where public key ciphers are used. This will allow us to understand the design of the architecture in order to be able to apply modifications. The main focus is digital signatures and the secure exchange of keys, operations considered to be particularly vulnerable. In the implementation phase, we replace the vulnerable algorithms with the vulnerable algorithms with the selection of post-quantum algorithms released by NIST. By making the quantum-resistant signature operations. Finally, in the verification phase tests will be carried out to verify the performance obtained, outlining the pros and cons of the implemented post-quantum algorithms. The work would like to demonstrate the possibility of adapting existing technologies to the new post-quantum protocols released by NIST with imaginable benefits in terms of effectiveness, security and cost of adaptation to the new future scenario.