Today, Cloudflare Workers is adding support for post-quantum-resistant algorithms within Web Crypto. These are defined in Modern Algorithms in the Web Cryptography API draft community group report, and include:

• ML-KEM-768 and ML-KEM-1024 for key encapsulation
• ML-DSA-44, ML-DSA-65, and ML-DSA-87 for signatures
• encapsulateBits(), decapsulateBits(), encapsulateKey(), and decapsulateKey()
• getPublicKey()
• SubtleCrypto.supports()
• JWK import and export for these algorithms

For developers preparing for the post-quantum transition, these opt-in Web Crypto APIs make it easier to experiment with ML-KEM and ML-DSA without bundling a separate cryptographic implementation. They do not provide a full migration path, but rather building blocks that can be used…