Post-quantum cryptography (PQC) is a field focused on developing cryptographic systems that are secure against attacks from both classical and quantum computers. This is necessary because current public-key algorithms like RSA and ECC, which are widely used to protect the internet, are vulnerable to attacks by quantum computers using Shor's algorithm

•The Quantum Threat: Quantum computers can theoretically solve mathematical problems, such as factoring large numbers and discrete logarithms, much more efficiently than classical computers. This poses a significant threat to current public-key cryptography, which relies on the difficulty of these problems

•Transition to PQC: The development and implementation of PQC is critical to ensure the continued security of digital information. The transition will take time, so it's important to start the process now.
•Real-World Deployment: There are many challenges in getting PQC deployed on the internet, including key distribution and compatibility with existing systems. One approach is to use tools that can be dropped in front of existing modular servers to test the new systems.

•Hybrid approach: A hybrid approach of using both classical and post-quantum algorithms in combination is being considered as a strategy to reduce risk.In the context of internet security, post-quantum cryptography is essential for the future. Current systems are vulnerable to quantum attacks, and the transition to PQC is a complex but necessary undertaking... While PQC is not yet widely deployed, some systems are already showing promise..., and ongoing research aims to address current challenges.Link to book: https://www.amazon.com/Post-Quantum-Cryptography-Daniel-J-Bernstein/dp/3540887016

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