SECURITY

Quantum Computing: Decrypting the Post-RSA Era

Q-Bit Expert

Core_Engineer

Date

JAN 05, 2026

Time

18 min

Quantum Computing: Decrypting the Post-RSA Era

The Cryptographic Cliff

Current RSA and Elliptic Curve encryption rely on the mathematical difficulty of factoring large integers. A sufficiently powerful quantum computer, using Shor's Algorithm, can solve this in minutes. This is why NIST is already standardizing Post-Quantum Cryptography (PQC).

Lattice-Based Cryptography

The leading candidates for PQC are lattice-based algorithms like Kyber and Dilithium. These rely on finding the shortest vector in a multi-dimensional lattice, a problem that is believed to be hard even for quantum computers.