Algorithms

Every table carries a Reference column naming the section of the RFC that defines the identifier; every value was checked against the IANA COSE Algorithms registry, and tests/RfcReferencesTest.php keeps the tables in step with the classes. The key types and curves the algorithms take are in Keys. Every class has a static create() and identifier(), and registers in a Manager.

• Signature algorithms — ECDSA, EdDSA, RSA and the fully-specified identifiers
• ML-DSA — the post-quantum signatures of RFC 9964
• Non-standard and insecure algorithms — what is weak, still required, and what it asks of you
• MAC algorithms — HMAC and AES-CBC-MAC
• Content encryption algorithms — AES-GCM, AES-CCM and ChaCha20/Poly1305
• Key management algorithms — direct, HKDF, AES Key Wrap and ECDH
• Hash algorithms — the RFC 9054 registry and the SHAKE sponges
• Registering algorithms — building the Manager an application accepts