1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis */
2 /* SPDX-License-Identifier: Unlicense */
3
4 #include "tomcrypt_private.h"
5
6 #ifdef LTC_MECC
7
8 static const struct {
9 const char *OID;
10 const char *names[6];
11 } s_curve_names[] = {
12 #ifdef LTC_ECC_SECP112R1
13 {
14 "1.3.132.0.6", { "SECP112R1", "ECC-112", NULL }
15 },
16 #endif
17 #ifdef LTC_ECC_SECP112R2
18 {
19 "1.3.132.0.7", { "SECP112R2", NULL }
20 },
21 #endif
22 #ifdef LTC_ECC_SECP128R1
23 {
24 "1.3.132.0.28", { "SECP128R1", "ECC-128", NULL }
25 },
26 #endif
27 #ifdef LTC_ECC_SECP128R2
28 {
29 "1.3.132.0.29", { "SECP128R2", NULL }
30 },
31 #endif
32 #ifdef LTC_ECC_SECP160R1
33 {
34 "1.3.132.0.8", { "SECP160R1", "ECC-160", NULL }
35 },
36 #endif
37 #ifdef LTC_ECC_SECP160R2
38 {
39 "1.3.132.0.30", { "SECP160R2", NULL }
40 },
41 #endif
42 #ifdef LTC_ECC_SECP160K1
43 {
44 "1.3.132.0.9", { "SECP160K1", NULL }
45 },
46 #endif
47 #ifdef LTC_ECC_SECP192R1
48 {
49 "1.2.840.10045.3.1.1", { "SECP192R1", "NISTP192", "PRIME192V1", "ECC-192", "P-192", NULL }
50 },
51 #endif
52 #ifdef LTC_ECC_PRIME192V2
53 {
54 "1.2.840.10045.3.1.2", { "PRIME192V2", NULL }
55 },
56 #endif
57 #ifdef LTC_ECC_PRIME192V3
58 {
59 "1.2.840.10045.3.1.3", { "PRIME192V3", NULL }
60 },
61 #endif
62 #ifdef LTC_ECC_SECP192K1
63 {
64 "1.3.132.0.31", { "SECP192K1", NULL }
65 },
66 #endif
67 #ifdef LTC_ECC_SECP224R1
68 {
69 "1.3.132.0.33", { "SECP224R1", "NISTP224", "ECC-224", "P-224", NULL }
70 },
71 #endif
72 #ifdef LTC_ECC_SECP224K1
73 {
74 "1.3.132.0.32", { "SECP224K1", NULL }
75 },
76 #endif
77 #ifdef LTC_ECC_SECP256R1
78 {
79 "1.2.840.10045.3.1.7", { "SECP256R1", "NISTP256", "PRIME256V1", "ECC-256", "P-256", NULL }
80 },
81 #endif
82 #ifdef LTC_ECC_SECP256K1
83 {
84 "1.3.132.0.10", { "SECP256K1", NULL }
85 },
86 #endif
87 #ifdef LTC_ECC_SECP384R1
88 {
89 "1.3.132.0.34", { "SECP384R1", "NISTP384", "ECC-384", "P-384", NULL }
90 },
91 #endif
92 #ifdef LTC_ECC_SECP521R1
93 {
94 "1.3.132.0.35", { "SECP521R1", "NISTP521", "ECC-521", "P-521", NULL }
95 },
96 #endif
97 #ifdef LTC_ECC_PRIME239V1
98 {
99 "1.2.840.10045.3.1.4", { "PRIME239V1", NULL }
100 },
101 #endif
102 #ifdef LTC_ECC_PRIME239V2
103 {
104 "1.2.840.10045.3.1.5", { "PRIME239V2", NULL }
105 },
106 #endif
107 #ifdef LTC_ECC_PRIME239V3
108 {
109 "1.2.840.10045.3.1.6", { "PRIME239V3", NULL }
110 },
111 #endif
112 #ifdef LTC_ECC_BRAINPOOLP160R1
113 {
114 "1.3.36.3.3.2.8.1.1.1", { "BRAINPOOLP160R1", NULL }
115 },
116 #endif
117 #ifdef LTC_ECC_BRAINPOOLP192R1
118 {
119 "1.3.36.3.3.2.8.1.1.3", { "BRAINPOOLP192R1", NULL }
120 },
121 #endif
122 #ifdef LTC_ECC_BRAINPOOLP224R1
123 {
124 "1.3.36.3.3.2.8.1.1.5", { "BRAINPOOLP224R1", NULL }
125 },
126 #endif
127 #ifdef LTC_ECC_BRAINPOOLP256R1
128 {
129 "1.3.36.3.3.2.8.1.1.7", { "BRAINPOOLP256R1", NULL }
130 },
131 #endif
132 #ifdef LTC_ECC_BRAINPOOLP320R1
133 {
134 "1.3.36.3.3.2.8.1.1.9", { "BRAINPOOLP320R1", NULL }
135 },
136 #endif
137 #ifdef LTC_ECC_BRAINPOOLP384R1
138 {
139 "1.3.36.3.3.2.8.1.1.11", { "BRAINPOOLP384R1", NULL }
140 },
141 #endif
142 #ifdef LTC_ECC_BRAINPOOLP512R1
143 {
144 "1.3.36.3.3.2.8.1.1.13", { "BRAINPOOLP512R1", NULL }
145 },
146 #endif
147 #ifdef LTC_ECC_BRAINPOOLP160T1
148 {
149 "1.3.36.3.3.2.8.1.1.2", { "BRAINPOOLP160T1", NULL }
150 },
151 #endif
152 #ifdef LTC_ECC_BRAINPOOLP192T1
153 {
154 "1.3.36.3.3.2.8.1.1.4", { "BRAINPOOLP192T1", NULL }
155 },
156 #endif
157 #ifdef LTC_ECC_BRAINPOOLP224T1
158 {
159 "1.3.36.3.3.2.8.1.1.6", { "BRAINPOOLP224T1", NULL }
160 },
161 #endif
162 #ifdef LTC_ECC_BRAINPOOLP256T1
163 {
164 "1.3.36.3.3.2.8.1.1.8", { "BRAINPOOLP256T1", NULL }
165 },
166 #endif
167 #ifdef LTC_ECC_BRAINPOOLP320T1
168 {
169 "1.3.36.3.3.2.8.1.1.10", { "BRAINPOOLP320T1", NULL }
170 },
171 #endif
172 #ifdef LTC_ECC_BRAINPOOLP384T1
173 {
174 "1.3.36.3.3.2.8.1.1.12", { "BRAINPOOLP384T1", NULL }
175 },
176 #endif
177 #ifdef LTC_ECC_BRAINPOOLP512T1
178 {
179 "1.3.36.3.3.2.8.1.1.14", { "BRAINPOOLP512T1", NULL }
180 },
181 #endif
182 #ifdef LTC_ECC_SM2
183 {
184 "1.2.156.10197.1.301", { "SM2", NULL }
185 },
186 #endif
187 {
188 NULL, { NULL }
189 }
190 };
191
192 /* case-insensitive match + ignore '-', '_', ' ' */
s_name_match(const char * left,const char * right)193 static int s_name_match(const char *left, const char *right)
194 {
195 char lc_r, lc_l;
196
197 while ((*left != '\0') && (*right != '\0')) {
198 while ((*left == ' ') || (*left == '-') || (*left == '_')) left++;
199 while ((*right == ' ') || (*right == '-') || (*right == '_')) right++;
200 if (*left == '\0' || *right == '\0') break;
201 lc_r = *right;
202 lc_l = *left;
203 if ((lc_r >= 'A') && (lc_r <= 'Z')) lc_r += 32;
204 if ((lc_l >= 'A') && (lc_l <= 'Z')) lc_l += 32;
205 if (lc_l != lc_r) return 0;
206 left++;
207 right++;
208 }
209
210 if ((*left == '\0') && (*right == '\0')) return 1;
211 return 0;
212 }
213
ecc_find_curve(const char * name_or_oid,const ltc_ecc_curve ** cu)214 int ecc_find_curve(const char *name_or_oid, const ltc_ecc_curve **cu)
215 {
216 int i, j;
217 const char *OID = NULL;
218
219 LTC_ARGCHK(cu != NULL);
220 LTC_ARGCHK(name_or_oid != NULL);
221
222 *cu = NULL;
223
224 for (i = 0; s_curve_names[i].OID != NULL && !OID; i++) {
225 if (XSTRCMP(s_curve_names[i].OID, name_or_oid) == 0) {
226 OID = s_curve_names[i].OID;
227 }
228 for (j = 0; s_curve_names[i].names[j] != NULL && !OID; j++) {
229 if (s_name_match(s_curve_names[i].names[j], name_or_oid)) {
230 OID = s_curve_names[i].OID;
231 }
232 }
233 }
234
235 if (OID != NULL) {
236 for (i = 0; ltc_ecc_curves[i].prime != NULL; i++) {
237 if (XSTRCMP(ltc_ecc_curves[i].OID, OID) == 0) {
238 *cu = <c_ecc_curves[i];
239 return CRYPT_OK;
240 }
241 }
242 }
243
244 return CRYPT_INVALID_ARG; /* not found */
245 }
246
247 #endif
248