# Value, IANA name, 
1,  sect163k1, K-163
2,  sect163r1, 
3,  sect163r2, B-163
4,  sect193r1, 
5,  sect193r2, 
6,  sect233k1, K-233
7,  sect233r1, B-233
8,  sect239k1, 
9,  sect283k1, K-283
10, sect283r1, B-283
11, sect409k1, K-409
12, sect409r1, B-409
13, sect571k1, K-571
14, sect571r1, B-571
15, secp160k1, 
16, secp160r1, 
17, secp160r2, 
18, secp192k1, 
19, secp192r1, P-192
20, secp224k1, 
21, secp224r1, P-224
22, secp256k1, 
23, secp256r1, P-256
24, secp384r1, P-384
25, secp521r1, P-521
26, brainpoolP256r1, 
27, brainpoolP384r1, 
28, brainpoolP512r1, 
unknown, curve448,
unknown, curve25519