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565b3399 | 1 | /* |
fecb3aae | 2 | * Copyright 2020-2022 The OpenSSL Project Authors. All Rights Reserved. |
565b3399 RL |
3 | * |
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 | |
8 | */ | |
9 | ||
10 | #include <string.h> | |
11 | #include <openssl/ec.h> | |
12 | #include "crypto/ec.h" | |
fba140c7 | 13 | #include "internal/nelem.h" |
565b3399 RL |
14 | |
15 | typedef struct ec_name2nid_st { | |
16 | const char *name; | |
17 | int nid; | |
18 | } EC_NAME2NID; | |
19 | ||
20 | static const EC_NAME2NID curve_list[] = { | |
21 | /* prime field curves */ | |
22 | /* secg 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 }, | |
36 | /* X9.62 curves */ | |
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 }, | |
64 | /* X9.62 curves */ | |
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 }, | |
81 | /* | |
82 | * the WAP/WTLS curves [unlike SECG, spec has its own OIDs for curves | |
83 | * from X9.62] | |
84 | */ | |
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 }, | |
96 | /* IPSec curves */ | |
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 }, | |
114 | /* SM2 curve */ | |
115 | {"SM2", NID_sm2 }, | |
116 | }; | |
117 | ||
f9253152 | 118 | const char *OSSL_EC_curve_nid2name(int nid) |
565b3399 RL |
119 | { |
120 | size_t i; | |
121 | ||
122 | if (nid <= 0) | |
123 | return NULL; | |
124 | ||
565b3399 RL |
125 | for (i = 0; i < OSSL_NELEM(curve_list); i++) { |
126 | if (curve_list[i].nid == nid) | |
127 | return curve_list[i].name; | |
128 | } | |
129 | return NULL; | |
130 | } | |
131 | ||
32ab57cb | 132 | int ossl_ec_curve_name2nid(const char *name) |
565b3399 RL |
133 | { |
134 | size_t i; | |
135 | int nid; | |
136 | ||
137 | if (name != NULL) { | |
32ab57cb | 138 | if ((nid = ossl_ec_curve_nist2nid_int(name)) != NID_undef) |
565b3399 RL |
139 | return nid; |
140 | ||
141 | for (i = 0; i < OSSL_NELEM(curve_list); i++) { | |
fba140c7 | 142 | if (OPENSSL_strcasecmp(curve_list[i].name, name) == 0) |
565b3399 RL |
143 | return curve_list[i].nid; |
144 | } | |
145 | } | |
146 | ||
147 | return NID_undef; | |
148 | } | |
149 | ||
150 | /* Functions to translate between common NIST curve names and NIDs */ | |
151 | ||
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} | |
168 | }; | |
169 | ||
32ab57cb | 170 | const char *ossl_ec_curve_nid2nist_int(int nid) |
565b3399 RL |
171 | { |
172 | size_t i; | |
173 | for (i = 0; i < OSSL_NELEM(nist_curves); i++) { | |
174 | if (nist_curves[i].nid == nid) | |
175 | return nist_curves[i].name; | |
176 | } | |
177 | return NULL; | |
178 | } | |
179 | ||
32ab57cb | 180 | int ossl_ec_curve_nist2nid_int(const char *name) |
565b3399 RL |
181 | { |
182 | size_t i; | |
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; | |
186 | } | |
187 | return NID_undef; | |
188 | } |