
Introduction Why Cryptography Must Evolve Modern digital security is built on cryptographic foundations such as RSA, ECC, and Diffie–Hellman. These algorithms protect everything from online banking and cloud storage to messaging apps and national infrastructure. However, the emergence of quantum computing threatens to undermine this foundation entirely. Quantum computers, once sufficiently powerful, will be…

The rapid progress of quantum computing has forced a major shift in the foundations of modern cybersecurity. Today’s most widely used cryptographic systems — RSA, Diffie-Hellman, and Elliptic Curve Cryptography (ECC) — were designed under the assumption that certain mathematical problems require an impractical amount of time to solve. Quantum computers break that assumption.…