Global standards for quantum-proof security might be temporary hurdles that advanced quantum computers will eventually walk right through.
Lattice-based cryptography is not unconditionally secure because the noise used to hide data does not permanently erase information. Advanced quantum error correction can extract this hidden data, potentially breaking the systems we are building to protect the future. This challenges the worldwide consensus that current post-quantum standards are a permanent solution for digital privacy. It suggests that our current security walls are merely temporary bottlenecks rather than mathematical certainties. We may need to find entirely different ways to protect data before the first powerful quantum computers arrive.
Fundamental Limitations of Post-Quantum Cryptographic Architectures
arXiv · 2605.04582
Modern lattice-based cryptography, particularly the learning with errors paradigm, relies on injecting artificial noise to secure data against quantum adversaries. This study systematically examines the theoretical and physical boundaries of this noise-reliant model across four interconnected domains: computational complexity, information-theoretic thermodynamics, quantum error correction, and quantum learning theory. Starting from the algorithmic foundation, our analysis notes that these framew