2 * Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include <openssl/ec.h>
12 #include "crypto/ec.h"
13 #include "internal/nelem.h"
15 typedef struct ec_name2nid_st
{
20 static const EC_NAME2NID curve_list
[] = {
21 /* prime field curves */
23 {"secp112r1", NID_secp112r1
},
24 {"secp112r2", NID_secp112r2
},
25 {"secp128r1", NID_secp128r1
},
26 {"secp128r2", NID_secp128r2
},
27 {"secp160k1", NID_secp160k1
},
28 {"secp160r1", NID_secp160r1
},
29 {"secp160r2", NID_secp160r2
},
30 {"secp192k1", NID_secp192k1
},
31 {"secp224k1", NID_secp224k1
},
32 {"secp224r1", NID_secp224r1
},
33 {"secp256k1", NID_secp256k1
},
34 {"secp384r1", NID_secp384r1
},
35 {"secp521r1", NID_secp521r1
},
37 {"prime192v1", NID_X9_62_prime192v1
},
38 {"prime192v2", NID_X9_62_prime192v2
},
39 {"prime192v3", NID_X9_62_prime192v3
},
40 {"prime239v1", NID_X9_62_prime239v1
},
41 {"prime239v2", NID_X9_62_prime239v2
},
42 {"prime239v3", NID_X9_62_prime239v3
},
43 {"prime256v1", NID_X9_62_prime256v1
},
44 /* characteristic two field curves */
45 /* NIST/SECG curves */
46 {"sect113r1", NID_sect113r1
},
47 {"sect113r2", NID_sect113r2
},
48 {"sect131r1", NID_sect131r1
},
49 {"sect131r2", NID_sect131r2
},
50 {"sect163k1", NID_sect163k1
},
51 {"sect163r1", NID_sect163r1
},
52 {"sect163r2", NID_sect163r2
},
53 {"sect193r1", NID_sect193r1
},
54 {"sect193r2", NID_sect193r2
},
55 {"sect233k1", NID_sect233k1
},
56 {"sect233r1", NID_sect233r1
},
57 {"sect239k1", NID_sect239k1
},
58 {"sect283k1", NID_sect283k1
},
59 {"sect283r1", NID_sect283r1
},
60 {"sect409k1", NID_sect409k1
},
61 {"sect409r1", NID_sect409r1
},
62 {"sect571k1", NID_sect571k1
},
63 {"sect571r1", NID_sect571r1
},
65 {"c2pnb163v1", NID_X9_62_c2pnb163v1
},
66 {"c2pnb163v2", NID_X9_62_c2pnb163v2
},
67 {"c2pnb163v3", NID_X9_62_c2pnb163v3
},
68 {"c2pnb176v1", NID_X9_62_c2pnb176v1
},
69 {"c2tnb191v1", NID_X9_62_c2tnb191v1
},
70 {"c2tnb191v2", NID_X9_62_c2tnb191v2
},
71 {"c2tnb191v3", NID_X9_62_c2tnb191v3
},
72 {"c2pnb208w1", NID_X9_62_c2pnb208w1
},
73 {"c2tnb239v1", NID_X9_62_c2tnb239v1
},
74 {"c2tnb239v2", NID_X9_62_c2tnb239v2
},
75 {"c2tnb239v3", NID_X9_62_c2tnb239v3
},
76 {"c2pnb272w1", NID_X9_62_c2pnb272w1
},
77 {"c2pnb304w1", NID_X9_62_c2pnb304w1
},
78 {"c2tnb359v1", NID_X9_62_c2tnb359v1
},
79 {"c2pnb368w1", NID_X9_62_c2pnb368w1
},
80 {"c2tnb431r1", NID_X9_62_c2tnb431r1
},
82 * the WAP/WTLS curves [unlike SECG, spec has its own OIDs for curves
85 {"wap-wsg-idm-ecid-wtls1", NID_wap_wsg_idm_ecid_wtls1
},
86 {"wap-wsg-idm-ecid-wtls3", NID_wap_wsg_idm_ecid_wtls3
},
87 {"wap-wsg-idm-ecid-wtls4", NID_wap_wsg_idm_ecid_wtls4
},
88 {"wap-wsg-idm-ecid-wtls5", NID_wap_wsg_idm_ecid_wtls5
},
89 {"wap-wsg-idm-ecid-wtls6", NID_wap_wsg_idm_ecid_wtls6
},
90 {"wap-wsg-idm-ecid-wtls7", NID_wap_wsg_idm_ecid_wtls7
},
91 {"wap-wsg-idm-ecid-wtls8", NID_wap_wsg_idm_ecid_wtls8
},
92 {"wap-wsg-idm-ecid-wtls9", NID_wap_wsg_idm_ecid_wtls9
},
93 {"wap-wsg-idm-ecid-wtls10", NID_wap_wsg_idm_ecid_wtls10
},
94 {"wap-wsg-idm-ecid-wtls11", NID_wap_wsg_idm_ecid_wtls11
},
95 {"wap-wsg-idm-ecid-wtls12", NID_wap_wsg_idm_ecid_wtls12
},
97 {"Oakley-EC2N-3", NID_ipsec3
},
98 {"Oakley-EC2N-4", NID_ipsec4
},
99 /* brainpool curves */
100 {"brainpoolP160r1", NID_brainpoolP160r1
},
101 {"brainpoolP160t1", NID_brainpoolP160t1
},
102 {"brainpoolP192r1", NID_brainpoolP192r1
},
103 {"brainpoolP192t1", NID_brainpoolP192t1
},
104 {"brainpoolP224r1", NID_brainpoolP224r1
},
105 {"brainpoolP224t1", NID_brainpoolP224t1
},
106 {"brainpoolP256r1", NID_brainpoolP256r1
},
107 {"brainpoolP256t1", NID_brainpoolP256t1
},
108 {"brainpoolP320r1", NID_brainpoolP320r1
},
109 {"brainpoolP320t1", NID_brainpoolP320t1
},
110 {"brainpoolP384r1", NID_brainpoolP384r1
},
111 {"brainpoolP384t1", NID_brainpoolP384t1
},
112 {"brainpoolP512r1", NID_brainpoolP512r1
},
113 {"brainpoolP512t1", NID_brainpoolP512t1
},
118 const char *OSSL_EC_curve_nid2name(int nid
)
125 for (i
= 0; i
< OSSL_NELEM(curve_list
); i
++) {
126 if (curve_list
[i
].nid
== nid
)
127 return curve_list
[i
].name
;
132 int ossl_ec_curve_name2nid(const char *name
)
138 if ((nid
= ossl_ec_curve_nist2nid_int(name
)) != NID_undef
)
141 for (i
= 0; i
< OSSL_NELEM(curve_list
); i
++) {
142 if (OPENSSL_strcasecmp(curve_list
[i
].name
, name
) == 0)
143 return curve_list
[i
].nid
;
150 /* Functions to translate between common NIST curve names and NIDs */
152 static const EC_NAME2NID nist_curves
[] = {
153 {"B-163", NID_sect163r2
},
154 {"B-233", NID_sect233r1
},
155 {"B-283", NID_sect283r1
},
156 {"B-409", NID_sect409r1
},
157 {"B-571", NID_sect571r1
},
158 {"K-163", NID_sect163k1
},
159 {"K-233", NID_sect233k1
},
160 {"K-283", NID_sect283k1
},
161 {"K-409", NID_sect409k1
},
162 {"K-571", NID_sect571k1
},
163 {"P-192", NID_X9_62_prime192v1
},
164 {"P-224", NID_secp224r1
},
165 {"P-256", NID_X9_62_prime256v1
},
166 {"P-384", NID_secp384r1
},
167 {"P-521", NID_secp521r1
}
170 const char *ossl_ec_curve_nid2nist_int(int nid
)
173 for (i
= 0; i
< OSSL_NELEM(nist_curves
); i
++) {
174 if (nist_curves
[i
].nid
== nid
)
175 return nist_curves
[i
].name
;
180 int ossl_ec_curve_nist2nid_int(const char *name
)
183 for (i
= 0; i
< OSSL_NELEM(nist_curves
); i
++) {
184 if (strcmp(nist_curves
[i
].name
, name
) == 0)
185 return nist_curves
[i
].nid
;