A Prototype for Post-Quantum Cryptographic Migration in Hyperledger Fabric

As quantum computing technology rapidly advances, it poses significant threats to traditional cryptographic systems. To address this challenge, this study implements a specific post-quantum cryptographic (PQC) hybrid signature in the open-source enterprise blockchain project Hyperledger Fabric. By leveraging the cryptographic library cfgo, the study enhances security in both digital signatures and the TLS protocol. Additionally, the performance is evaluated under different consensus mechanisms, revealing that long public keys and signatures lead to an increase in storage requirements. While the use of post-quantum signature algorithms results in a decrease in transactions per second (TPS), there is no severe performance degradation. Through this study, we aim to provide valuable insights and practical guidance for the application of PQC in operational blockchain systems, contributing to the construction of quantum-safe information infrastructure in the future.