What's New In Post-Quantum Cryptography In RHEL 10.1
Red Hat, Wednesday, February 4th, 2026
In May 2025, Red Hat Enterprise Linux 10 (RHEL) shipped with the first steps toward post-quantum cryptography (PQC) to protect against attacks by quantum computers, which will make attacks on existing classic cryptographic algorithms such as RSA and elliptic curves feasible.
Cryptographically relevant quantum computers (CRQC) are still not known to exist, but that does not mean the risk is zero. For example, "harvest now, decrypt later" attacks do not need a quantum computer now, one only needs to become available before the stored encrypted data loses its value, and depending on the transferred data, decades might pass before that happens.
To prepare for a quantum future, RHEL 10.1 improves defenses against such 'harvest now, decrypt later' attacks and introduces post-quantum signatures for its packages.