Shor's Algorithm uses quantum computing to break RSA, Diffie-Hellman and elliptic curve cryptography in polynomial time; governments already harvesting encrypted data for future decryption.

What Is Shor's Algorithm - And Why It's the Single Biggest Threat to Classical Cryptography

Posts What Is Shor's Algorithm - And Why It's the Single Biggest Threat to Classical Cryptography 1. Introduction: The Algorithm That Broke the Future Peter Shor writes a few pages of math. The entire world’s public-key cryptography dies on those pages. RSA. Diffie-Hellman. Elliptic Curve crypto. All of it collapses the moment someone runs Shor’s algorithm on a big enough quantum machine. This isn’t Grover’s “square-root speedup” that just makes brute force a bit fas...