Value,KEM,Nsecret,Nenc,Npk,Nsk,Auth,Reference
0x0000,Reserved,N/A,N/A,N/A,N/A,yes,[RFC9180]
0x0001-0x000F,Unassigned,,,,,,
0x0010,"DHKEM(P-256, HKDF-SHA256)",32,65,65,32,yes,[NISTCurves][RFC5869]
0x0011,"DHKEM(P-384, HKDF-SHA384)",48,97,97,48,yes,[NISTCurves][RFC5869]
0x0012,"DHKEM(P-521, HKDF-SHA512)",64,133,133,66,yes,[NISTCurves][RFC5869]
0x0013,"DHKEM(CP-256, HKDF-SHA256)",32,32,32,32,Yes,[NISTCurves][RFC6090][draft-irtf-cfrg-dnhpke-01]
0x0014,"DHKEM(CP-384, HKDF-SHA384)",48,48,48,48,Yes,[NISTCurves][RFC6090][draft-irtf-cfrg-dnhpke-01]
0x0015,"DHKEM(CP-521, HKDF-SHA512)",64,66,66,66,Yes,[NISTCurves][RFC6090][draft-irtf-cfrg-dnhpke-01]
0x0016,"DHKEM(secp256k1, HKDF-SHA256)",32,65,65,32,yes,[Standards for Efficient Cryptography 2 (SEC 2)][draft-wahby-cfrg-hpke-kem-secp256k1-01]
0x0017-0x001F,Unassigned,,,,,,
0x0020,"DHKEM(X25519, HKDF-SHA256)",32,32,32,32,yes,[RFC5869][RFC7748]
0x0021,"DHKEM(X448, HKDF-SHA512)",64,56,56,56,yes,[RFC5869][RFC7748]
0x0022,"DHKEM(X25519+Elligator, HKDF-SHA256)",32,32,32,32,yes,[https://lsd.gnunet.org/lsd0011/][draft-schanzen-hpke-elligator-kem-01]
0x0023-0x002F,Unassigned,,,,,,
0x0030,X25519Kyber768Draft00,64,1120,1216,2432,no,[draft-westerbaan-cfrg-hpke-xyber768d00-02]
0x0031-0x0039,Unassigned,,,,,,
0x0040,ML-KEM-512,32,768,800,64,no,[draft-connolly-cfrg-hpke-mlkem-04]
0x0041,ML-KEM-768,32,1088,1184,64,no,[draft-connolly-cfrg-hpke-mlkem-04]
0x0042,ML-KEM-1024,32,1568,1568,64,no,[draft-connolly-cfrg-hpke-mlkem-04]
0x0043-0x6479,Unassigned,,,,,,
0x647a,X-Wing,32,1120,1216,32,no,[draft-connolly-cfrg-xwing-kem-06]
0x647b-0xFFFF,Unassigned,,,,,,