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1 | /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL | |
2 | * project 2006. | |
3 | */ | |
4 | /* ==================================================================== | |
5 | * Copyright (c) 2006 The OpenSSL Project. All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * | |
11 | * 1. Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * | |
14 | * 2. Redistributions in binary form must reproduce the above copyright | |
15 | * notice, this list of conditions and the following disclaimer in | |
16 | * the documentation and/or other materials provided with the | |
17 | * distribution. | |
18 | * | |
19 | * 3. All advertising materials mentioning features or use of this | |
20 | * software must display the following acknowledgment: | |
21 | * "This product includes software developed by the OpenSSL Project | |
22 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
23 | * | |
24 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
25 | * endorse or promote products derived from this software without | |
26 | * prior written permission. For written permission, please contact | |
27 | * licensing@OpenSSL.org. | |
28 | * | |
29 | * 5. Products derived from this software may not be called "OpenSSL" | |
30 | * nor may "OpenSSL" appear in their names without prior written | |
31 | * permission of the OpenSSL Project. | |
32 | * | |
33 | * 6. Redistributions of any form whatsoever must retain the following | |
34 | * acknowledgment: | |
35 | * "This product includes software developed by the OpenSSL Project | |
36 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
37 | * | |
38 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
39 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
40 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
41 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
42 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
43 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
44 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
45 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
46 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
47 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
48 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
49 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
50 | * ==================================================================== | |
51 | * | |
52 | * This product includes cryptographic software written by Eric Young | |
53 | * (eay@cryptsoft.com). This product includes software written by Tim | |
54 | * Hudson (tjh@cryptsoft.com). | |
55 | * | |
56 | */ | |
57 | ||
58 | #include <stdio.h> | |
59 | #include "cryptlib.h" | |
60 | #include <openssl/asn1t.h> | |
61 | #include <openssl/x509.h> | |
62 | #include <openssl/ec.h> | |
63 | #include "asn1_locl.h" | |
64 | ||
65 | extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[]; | |
66 | extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[]; | |
67 | extern const EVP_PKEY_ASN1_METHOD dh_asn1_meth; | |
68 | extern const EVP_PKEY_ASN1_METHOD eckey_asn1_meth; | |
69 | ||
70 | /* Keep this sorted in type order !! */ | |
71 | const EVP_PKEY_ASN1_METHOD *standard_methods[] = | |
72 | { | |
73 | &rsa_asn1_meths[0], | |
74 | &rsa_asn1_meths[1], | |
75 | &dh_asn1_meth, | |
76 | &dsa_asn1_meths[0], | |
77 | &dsa_asn1_meths[1], | |
78 | &dsa_asn1_meths[2], | |
79 | &dsa_asn1_meths[3], | |
80 | &dsa_asn1_meths[4], | |
81 | &eckey_asn1_meth | |
82 | }; | |
83 | ||
84 | typedef int sk_cmp_fn_type(const char * const *a, const char * const *b); | |
85 | static STACK *app_methods = NULL; | |
86 | ||
87 | ||
88 | ||
89 | #ifdef TEST | |
90 | void main() | |
91 | { | |
92 | int i; | |
93 | for (i = 0; | |
94 | i < sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *); | |
95 | i++) | |
96 | fprintf(stderr, "Number %d id=%d (%s)\n", i, | |
97 | standard_methods[i]->pkey_id, | |
98 | OBJ_nid2sn(standard_methods[i]->pkey_id)); | |
99 | } | |
100 | #endif | |
101 | ||
102 | static int ameth_cmp(const EVP_PKEY_ASN1_METHOD * const *a, | |
103 | const EVP_PKEY_ASN1_METHOD * const *b) | |
104 | { | |
105 | return ((*a)->pkey_id - (*b)->pkey_id); | |
106 | } | |
107 | ||
108 | int EVP_PKEY_asn1_get_count(void) | |
109 | { | |
110 | int num = sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *); | |
111 | if (app_methods) | |
112 | num += sk_num(app_methods); | |
113 | return num; | |
114 | } | |
115 | ||
116 | const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx) | |
117 | { | |
118 | int num = sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *); | |
119 | if (idx < 0) | |
120 | return NULL; | |
121 | if (idx < num) | |
122 | return standard_methods[idx]; | |
123 | idx -= num; | |
124 | return (const EVP_PKEY_ASN1_METHOD *)sk_value(app_methods, idx); | |
125 | } | |
126 | ||
127 | const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(int type) | |
128 | { | |
129 | EVP_PKEY_ASN1_METHOD tmp, *t = &tmp, **ret; | |
130 | tmp.pkey_id = type; | |
131 | if (app_methods) | |
132 | { | |
133 | int idx; | |
134 | idx = sk_find(app_methods, (char *)&t); | |
135 | if (idx > 0) | |
136 | return (EVP_PKEY_ASN1_METHOD *) | |
137 | sk_value(app_methods, idx); | |
138 | } | |
139 | ret = (EVP_PKEY_ASN1_METHOD **) OBJ_bsearch((char *)&t, | |
140 | (char *)standard_methods, | |
141 | sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *), | |
142 | sizeof(EVP_PKEY_ASN1_METHOD *), | |
143 | (int (*)(const void *, const void *))ameth_cmp); | |
144 | if (!ret || !*ret) | |
145 | return NULL; | |
146 | if ((*ret)->pkey_flags & ASN1_PKEY_ALIAS) | |
147 | return EVP_PKEY_asn1_find((*ret)->pkey_base_id); | |
148 | return *ret; | |
149 | } | |
150 | ||
151 | const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(const char *str, int len) | |
152 | { | |
153 | int i; | |
154 | const EVP_PKEY_ASN1_METHOD *ameth; | |
155 | for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) | |
156 | { | |
157 | ameth = EVP_PKEY_asn1_get0(i); | |
158 | if (ameth->pkey_flags & ASN1_PKEY_ALIAS) | |
159 | continue; | |
160 | if ((strlen(ameth->pem_str) == len) && | |
161 | !strncasecmp(ameth->pem_str, str, len)) | |
162 | return ameth; | |
163 | } | |
164 | return NULL; | |
165 | } | |
166 | ||
167 | int EVP_PKEY_asn1_add(const EVP_PKEY_ASN1_METHOD *ameth) | |
168 | { | |
169 | if (app_methods == NULL) | |
170 | { | |
171 | app_methods = sk_new((sk_cmp_fn_type *)ameth_cmp); | |
172 | if (!app_methods) | |
173 | return 0; | |
174 | } | |
175 | if (!sk_push(app_methods, (char *)ameth)) | |
176 | return 0; | |
177 | sk_sort(app_methods); | |
178 | return 1; | |
179 | } | |
180 | ||
181 | EVP_PKEY_ASN1_METHOD* EVP_PKEY_asn1_new(int id, | |
182 | const char *pem_str, const char *info) | |
183 | { | |
184 | EVP_PKEY_ASN1_METHOD *ameth; | |
185 | ameth = OPENSSL_malloc(sizeof(EVP_PKEY_ASN1_METHOD)); | |
186 | if (!ameth) | |
187 | return NULL; | |
188 | ||
189 | ameth->pkey_id = id; | |
190 | ameth->pkey_base_id = id; | |
191 | ameth->pkey_flags = ASN1_PKEY_DYNAMIC; | |
192 | ||
193 | if (info) | |
194 | { | |
195 | ameth->info = BUF_strdup(info); | |
196 | if (!ameth->info) | |
197 | goto err; | |
198 | } | |
199 | ||
200 | if (pem_str) | |
201 | { | |
202 | ameth->pem_str = BUF_strdup(pem_str); | |
203 | if (!ameth->pem_str) | |
204 | goto err; | |
205 | } | |
206 | ||
207 | ameth->pub_decode = 0; | |
208 | ameth->pub_encode = 0; | |
209 | ameth->pub_cmp = 0; | |
210 | ameth->pub_print = 0; | |
211 | ||
212 | ||
213 | ameth->priv_decode = 0; | |
214 | ameth->priv_encode = 0; | |
215 | ameth->priv_print = 0; | |
216 | ||
217 | ||
218 | ameth->pkey_size = 0; | |
219 | ameth->pkey_bits = 0; | |
220 | ||
221 | ameth->param_decode = 0; | |
222 | ameth->param_encode = 0; | |
223 | ameth->param_missing = 0; | |
224 | ameth->param_copy = 0; | |
225 | ameth->param_cmp = 0; | |
226 | ameth->param_print = 0; | |
227 | ||
228 | ||
229 | ameth->pkey_free = 0; | |
230 | ameth->pkey_ctrl = 0; | |
231 | ||
232 | return ameth; | |
233 | ||
234 | err: | |
235 | ||
236 | EVP_PKEY_asn1_free(ameth); | |
237 | return NULL; | |
238 | ||
239 | } | |
240 | ||
241 | void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth) | |
242 | { | |
243 | if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC)) | |
244 | { | |
245 | if (ameth->pem_str) | |
246 | OPENSSL_free(ameth->pem_str); | |
247 | if (ameth->info) | |
248 | OPENSSL_free(ameth->info); | |
249 | OPENSSL_free(ameth); | |
250 | } | |
251 | } | |
252 | ||
253 | void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth, | |
254 | int (*pub_decode)(EVP_PKEY *pk, X509_PUBKEY *pub), | |
255 | int (*pub_encode)(X509_PUBKEY *pub, const EVP_PKEY *pk), | |
256 | int (*pub_cmp)(const EVP_PKEY *a, const EVP_PKEY *b), | |
257 | int (*pub_print)(BIO *out, const EVP_PKEY *pkey, int indent, | |
258 | ASN1_PCTX *pctx), | |
259 | int (*pkey_size)(const EVP_PKEY *pk), | |
260 | int (*pkey_bits)(const EVP_PKEY *pk)) | |
261 | { | |
262 | ameth->pub_decode = pub_decode; | |
263 | ameth->pub_encode = pub_encode; | |
264 | ameth->pub_cmp = pub_cmp; | |
265 | ameth->pub_print = pub_print; | |
266 | ameth->pkey_size = pkey_size; | |
267 | ameth->pkey_bits = pkey_bits; | |
268 | } | |
269 | ||
270 | void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth, | |
271 | int (*priv_decode)(EVP_PKEY *pk, PKCS8_PRIV_KEY_INFO *p8inf), | |
272 | int (*priv_encode)(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk), | |
273 | int (*priv_print)(BIO *out, const EVP_PKEY *pkey, int indent, | |
274 | ASN1_PCTX *pctx)) | |
275 | { | |
276 | ameth->priv_decode = priv_decode; | |
277 | ameth->priv_encode = priv_encode; | |
278 | ameth->priv_print = priv_print; | |
279 | } | |
280 | ||
281 | void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth, | |
282 | int (*param_decode)(const EVP_PKEY *pk, X509_PUBKEY *pub), | |
283 | int (*param_encode)(X509_PUBKEY *pub, const EVP_PKEY *pk), | |
284 | int (*param_missing)(const EVP_PKEY *pk), | |
285 | int (*param_copy)(EVP_PKEY *to, const EVP_PKEY *from), | |
286 | int (*param_cmp)(const EVP_PKEY *a, const EVP_PKEY *b), | |
287 | int (*param_print)(BIO *out, const EVP_PKEY *pkey, int indent, | |
288 | ASN1_PCTX *pctx)) | |
289 | { | |
290 | ameth->param_decode = param_decode; | |
291 | ameth->param_encode = param_encode; | |
292 | ameth->param_missing = param_missing; | |
293 | ameth->param_copy = param_copy; | |
294 | ameth->param_cmp = param_cmp; | |
295 | ameth->param_print = param_print; | |
296 | } | |
297 | ||
298 | void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth, | |
299 | void (*pkey_free)(EVP_PKEY *pkey)) | |
300 | { | |
301 | ameth->pkey_free = pkey_free; | |
302 | } | |
303 | ||
304 | void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth, | |
305 | void (*pkey_ctrl)(EVP_PKEY *pkey, int op, | |
306 | long arg1, void *arg2)) | |
307 | { | |
308 | ameth->pkey_ctrl = pkey_ctrl; | |
309 | } |