Post Quantum Shield

the transition to post-quantum cryptography, which responds to the existential threat that future powerful quantum computers already pose to current encryption. The author explains the principles of asymmetric encryption and describes how specific quantum algorithms can break today's mathematical foundations of digital security. A key part is the introduction of new families of algorithms, such as lattice cryptography or systems based on self-correcting codes, which are resistant to both classical and quantum attacks. The document emphasizes the urgency of the situation due to the "store now, decrypt later" strategy and describes the ongoing global standardization under the auspices of the NIST institute. Finally, the text appeals to organizations to implement crypto-agile approaches and hybrid systems in a timely manner to ensure the long-term protection of sensitive data.