Name,Value,Key Type,Description,Change Controller,Reference,Recommended
Reserved for Private Use,Integer values less than -65536,,,,[RFC9053],No
Unassigned,-65536 to -1,,,,,
Reserved,0,,,,[RFC9053],No
P-256,1,EC2,NIST P-256 also known as secp256r1,,[RFC9053],Yes
P-384,2,EC2,NIST P-384 also known as secp384r1,,[RFC9053],Yes
P-521,3,EC2,NIST P-521 also known as secp521r1,,[RFC9053],Yes
X25519,4,OKP,X25519 for use w/ ECDH only,,[RFC9053],Yes
X448,5,OKP,X448 for use w/ ECDH only,,[RFC9053],Yes
Ed25519,6,OKP,Ed25519 for use w/ EdDSA only,,[RFC9053],Yes
Ed448,7,OKP,Ed448 for use w/ EdDSA only,,[RFC9053],Yes
secp256k1,8,EC2,SECG secp256k1 curve,IESG,[RFC8812],No
Unassigned,9-255,,,,,
brainpoolP256r1,256,EC2,BrainpoolP256r1,[ISO/IEC JTC 1/SC 17/WG 10],"[ISO/IEC 18013-5:2021, 9.1.5.2]",No
brainpoolP320r1,257,EC2,BrainpoolP320r1,[ISO/IEC JTC 1/SC 17/WG 10],"[ISO/IEC 18013-5:2021, 9.1.5.2]",No
brainpoolP384r1,258,EC2,BrainpoolP384r1,[ISO/IEC JTC 1/SC 17/WG 10],"[ISO/IEC 18013-5:2021, 9.1.5.2]",No
brainpoolP512r1,259,EC2,BrainpoolP512r1,[ISO/IEC JTC 1/SC 17/WG 10],"[ISO/IEC 18013-5:2021, 9.1.5.2]",No