Public key cryptography is nowadays a crucial component of global communications which are critical to our economy, security and way of life. The quantum computers are expected to be a threat and the widely used RSA, ECDSA, ECDH, and DSA cryptosystems will need to be replaced by quantum safe cryptography. The main objective of the HORIZON Europe PQ-REACT project is to design, develop and validate a framework for a faster and smoother transition from classical to quantum safe cryptography for a wide variety of contexts and usage domains that could have a potential interest for defence purposes. This framework will include Post Quantum Cryptography (PQC) migration paths and cryptographic agility methods and will develop a portfolio of tools for validation of post quantum cryptographic systems using Quantum Computing. A variety of real-world pilots using PQC and Quantum Cryptography, i.e., Smart Grids, 5G and Ledgers will be deployed to validate the defined framework.

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