Cloudflare Workers Adds Post-Quantum Cryptography Support

• •Cloudflare Workers now supports post-quantum algorithms ML-KEM and ML-DSA.
• •Developers can experiment with these algorithms using the Web Crypto API.
• •The update is part of a broader effort to modernize web cryptography.

On October 1, 2026, Cloudflare announced support for modern cryptographic algorithms in its Workers platform, including post-quantum-resistant algorithms like ML-KEM and ML-DSA. This update allows developers to experiment with these algorithms in the Web Crypto API, facilitating a transition to post-quantum security. The new features include functions for key encapsulation and decapsulation, as well as signature generation and verification. While this support is currently behind a compatibility flag, it provides essential building blocks for developers to prepare their applications for the post-quantum era. The move comes as the cybersecurity community anticipates the need for stronger cryptographic protections against potential quantum computing threats. The specification for these algorithms is part of an ongoing effort to modernize cryptography on the web, with additional algorithms also proposed. This update does not represent a full migration path but offers tools for validation and integration.