1 // SPDX-License-Identifier: BSD-2-Clause
2 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
3 *
4 * LibTomCrypt is a library that provides various cryptographic
5 * algorithms in a highly modular and flexible manner.
6 *
7 * The library is free for all purposes without any express
8 * guarantee it works.
9 */
10
11 #include "tomcrypt_private.h"
12
13 #ifdef LTC_MECC
14
15 static const struct {
16 const char *OID;
17 const char *names[6];
18 } _curve_names[] = {
19 #ifdef LTC_ECC_SECP112R1
20 {
21 "1.3.132.0.6", { "SECP112R1", "ECC-112", NULL }
22 },
23 #endif
24 #ifdef LTC_ECC_SECP112R2
25 {
26 "1.3.132.0.7", { "SECP112R2", NULL }
27 },
28 #endif
29 #ifdef LTC_ECC_SECP128R1
30 {
31 "1.3.132.0.28", { "SECP128R1", "ECC-128", NULL }
32 },
33 #endif
34 #ifdef LTC_ECC_SECP128R2
35 {
36 "1.3.132.0.29", { "SECP128R2", NULL }
37 },
38 #endif
39 #ifdef LTC_ECC_SECP160R1
40 {
41 "1.3.132.0.8", { "SECP160R1", "ECC-160", NULL }
42 },
43 #endif
44 #ifdef LTC_ECC_SECP160R2
45 {
46 "1.3.132.0.30", { "SECP160R2", NULL }
47 },
48 #endif
49 #ifdef LTC_ECC_SECP160K1
50 {
51 "1.3.132.0.9", { "SECP160K1", NULL }
52 },
53 #endif
54 #ifdef LTC_ECC_SECP192R1
55 {
56 "1.2.840.10045.3.1.1", { "SECP192R1", "NISTP192", "PRIME192V1", "ECC-192", "P-192", NULL }
57 },
58 #endif
59 #ifdef LTC_ECC_PRIME192V2
60 {
61 "1.2.840.10045.3.1.2", { "PRIME192V2", NULL }
62 },
63 #endif
64 #ifdef LTC_ECC_PRIME192V3
65 {
66 "1.2.840.10045.3.1.3", { "PRIME192V3", NULL }
67 },
68 #endif
69 #ifdef LTC_ECC_SECP192K1
70 {
71 "1.3.132.0.31", { "SECP192K1", NULL }
72 },
73 #endif
74 #ifdef LTC_ECC_SECP224R1
75 {
76 "1.3.132.0.33", { "SECP224R1", "NISTP224", "ECC-224", "P-224", NULL }
77 },
78 #endif
79 #ifdef LTC_ECC_SECP224K1
80 {
81 "1.3.132.0.32", { "SECP224K1", NULL }
82 },
83 #endif
84 #ifdef LTC_ECC_SECP256R1
85 {
86 "1.2.840.10045.3.1.7", { "SECP256R1", "NISTP256", "PRIME256V1", "ECC-256", "P-256", NULL }
87 },
88 #endif
89 #ifdef LTC_ECC_SECP256K1
90 {
91 "1.3.132.0.10", { "SECP256K1", NULL }
92 },
93 #endif
94 #ifdef LTC_ECC_SECP384R1
95 {
96 "1.3.132.0.34", { "SECP384R1", "NISTP384", "ECC-384", "P-384", NULL }
97 },
98 #endif
99 #ifdef LTC_ECC_SECP521R1
100 {
101 "1.3.132.0.35", { "SECP521R1", "NISTP521", "ECC-521", "P-521", NULL }
102 },
103 #endif
104 #ifdef LTC_ECC_PRIME239V1
105 {
106 "1.2.840.10045.3.1.4", { "PRIME239V1", NULL }
107 },
108 #endif
109 #ifdef LTC_ECC_PRIME239V2
110 {
111 "1.2.840.10045.3.1.5", { "PRIME239V2", NULL }
112 },
113 #endif
114 #ifdef LTC_ECC_PRIME239V3
115 {
116 "1.2.840.10045.3.1.6", { "PRIME239V3", NULL }
117 },
118 #endif
119 #ifdef LTC_ECC_BRAINPOOLP160R1
120 {
121 "1.3.36.3.3.2.8.1.1.1", { "BRAINPOOLP160R1", NULL }
122 },
123 #endif
124 #ifdef LTC_ECC_BRAINPOOLP192R1
125 {
126 "1.3.36.3.3.2.8.1.1.3", { "BRAINPOOLP192R1", NULL }
127 },
128 #endif
129 #ifdef LTC_ECC_BRAINPOOLP224R1
130 {
131 "1.3.36.3.3.2.8.1.1.5", { "BRAINPOOLP224R1", NULL }
132 },
133 #endif
134 #ifdef LTC_ECC_BRAINPOOLP256R1
135 {
136 "1.3.36.3.3.2.8.1.1.7", { "BRAINPOOLP256R1", NULL }
137 },
138 #endif
139 #ifdef LTC_ECC_BRAINPOOLP320R1
140 {
141 "1.3.36.3.3.2.8.1.1.9", { "BRAINPOOLP320R1", NULL }
142 },
143 #endif
144 #ifdef LTC_ECC_BRAINPOOLP384R1
145 {
146 "1.3.36.3.3.2.8.1.1.11", { "BRAINPOOLP384R1", NULL }
147 },
148 #endif
149 #ifdef LTC_ECC_BRAINPOOLP512R1
150 {
151 "1.3.36.3.3.2.8.1.1.13", { "BRAINPOOLP512R1", NULL }
152 },
153 #endif
154 #ifdef LTC_ECC_BRAINPOOLP160T1
155 {
156 "1.3.36.3.3.2.8.1.1.2", { "BRAINPOOLP160T1", NULL }
157 },
158 #endif
159 #ifdef LTC_ECC_BRAINPOOLP192T1
160 {
161 "1.3.36.3.3.2.8.1.1.4", { "BRAINPOOLP192T1", NULL }
162 },
163 #endif
164 #ifdef LTC_ECC_BRAINPOOLP224T1
165 {
166 "1.3.36.3.3.2.8.1.1.6", { "BRAINPOOLP224T1", NULL }
167 },
168 #endif
169 #ifdef LTC_ECC_BRAINPOOLP256T1
170 {
171 "1.3.36.3.3.2.8.1.1.8", { "BRAINPOOLP256T1", NULL }
172 },
173 #endif
174 #ifdef LTC_ECC_BRAINPOOLP320T1
175 {
176 "1.3.36.3.3.2.8.1.1.10", { "BRAINPOOLP320T1", NULL }
177 },
178 #endif
179 #ifdef LTC_ECC_BRAINPOOLP384T1
180 {
181 "1.3.36.3.3.2.8.1.1.12", { "BRAINPOOLP384T1", NULL }
182 },
183 #endif
184 #ifdef LTC_ECC_BRAINPOOLP512T1
185 {
186 "1.3.36.3.3.2.8.1.1.14", { "BRAINPOOLP512T1", NULL }
187 },
188 #endif
189 #ifdef LTC_ECC_SM2
190 {
191 "1.2.156.10197.1.301", { "SM2", NULL }
192 },
193 #endif
194 {
195 NULL, { NULL }
196 }
197 };
198
199 /* case-insensitive match + ignore '-', '_', ' ' */
_name_match(const char * left,const char * right)200 static int _name_match(const char *left, const char *right)
201 {
202 char lc_r, lc_l;
203
204 while ((*left != '\0') && (*right != '\0')) {
205 while ((*left == ' ') || (*left == '-') || (*left == '_')) left++;
206 while ((*right == ' ') || (*right == '-') || (*right == '_')) right++;
207 if (*left == '\0' || *right == '\0') break;
208 lc_r = *right;
209 lc_l = *left;
210 if ((lc_r >= 'A') && (lc_r <= 'Z')) lc_r += 32;
211 if ((lc_l >= 'A') && (lc_l <= 'Z')) lc_l += 32;
212 if (lc_l != lc_r) return 0;
213 left++;
214 right++;
215 }
216
217 if ((*left == '\0') && (*right == '\0')) return 1;
218 return 0;
219 }
220
ecc_find_curve(const char * name_or_oid,const ltc_ecc_curve ** cu)221 int ecc_find_curve(const char *name_or_oid, const ltc_ecc_curve **cu)
222 {
223 int i, j;
224 const char *OID = NULL;
225
226 LTC_ARGCHK(cu != NULL);
227 LTC_ARGCHK(name_or_oid != NULL);
228
229 *cu = NULL;
230
231 for (i = 0; _curve_names[i].OID != NULL && !OID; i++) {
232 if (XSTRCMP(_curve_names[i].OID, name_or_oid) == 0) {
233 OID = _curve_names[i].OID;
234 }
235 for (j = 0; _curve_names[i].names[j] != NULL && !OID; j++) {
236 if (_name_match(_curve_names[i].names[j], name_or_oid)) {
237 OID = _curve_names[i].OID;
238 }
239 }
240 }
241
242 if (OID != NULL) {
243 for (i = 0; ltc_ecc_curves[i].prime != NULL; i++) {
244 if (XSTRCMP(ltc_ecc_curves[i].OID, OID) == 0) {
245 *cu = <c_ecc_curves[i];
246 return CRYPT_OK;
247 }
248 }
249 }
250
251 return CRYPT_INVALID_ARG; /* not found */
252 }
253
254 #endif
255
256 /* ref: $Format:%D$ */
257 /* git commit: $Format:%H$ */
258 /* commit time: $Format:%ai$ */
259