3. Identifiers

This section preserves the RFC text for using ML-KEM with CMS, including KEMRecipientInfo, HKDF, AES Key Wrap, ASN.1 identifiers, IANA registration, and the authenticated-enveloped-data example.

3.  Identifiers

   All identifiers used to indicate ML-KEM within the CMS are defined in
   [CSOR] and [RFC8619]; they are reproduced here for convenience:

     nistAlgorithms OBJECT IDENTIFIER ::= { joint-iso-ccitt(2)
         country(16) us(840) organization(1) gov(101) csor(3)
         nistAlgorithm(4) }
     kems OBJECT IDENTIFIER ::= { nistAlgorithms 4 }

     id-alg-ml-kem-512 OBJECT IDENTIFIER ::= { kems 1 }

     id-alg-ml-kem-768 OBJECT IDENTIFIER ::= { kems 2 }

     id-alg-ml-kem-1024 OBJECT IDENTIFIER ::= { kems 3 }

     id-alg-hkdf-with-sha256 OBJECT IDENTIFIER ::= { iso(1)
         member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-9(9)
         smime(16) alg(3) 28 }

     aes OBJECT IDENTIFIER ::= { joint-iso-itu-t(2) country(16) us(840)
         organization(1) gov(101) csor(3) nistAlgorithms(4) 1 }

     id-aes128-wrap OBJECT IDENTIFIER ::= { aes 5 }
     id-aes256-wrap OBJECT IDENTIFIER ::= { aes 45 }