RSA vs Post Quantum Encryption

RSA vs Post-Quantum Encryption For decades, RSA encryption has been the backbone of digital trust — protecting logins, banking, emails, and national systems. Its strength comes from one simple idea: it’s easy to multiply two big prime numbers, but nearly impossible to factor them apart. Then along came quantum computing. Quantum algorithms — especially Shor’s Algorithm — can factor those large primes exponentially faster than classical computers. That means when large-scale quantum machines arrive, RSA (and ECC) will no longer be secure. Enter Post-Quantum Encryption (PQC): New families of algorithms built on math that even quantum computers can’t easily solve — like lattice problems, hash-based signatures, and code-based cryptography. The shift isn’t just about swapping algorithms — it’s about re-engineering trust: Hardware and software updates across global networks Hybrid systems mixing classical + quantum-resistant encryption Certification and compliance under NIST’s new PQC standards RSA took us safely through the internet age. Post-quantum cryptography will carry us into the quantum one. In short: RSA was strong for the world we built — PQC is strong for the world that’s coming.