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d02b48c6 | 1 | /* crypto/evp/p_lib.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | ||
59 | #include <stdio.h> | |
60 | #include "cryptlib.h" | |
4d94ae00 BM |
61 | #include <openssl/bn.h> |
62 | #include <openssl/err.h> | |
ec577822 BM |
63 | #include <openssl/objects.h> |
64 | #include <openssl/evp.h> | |
65 | #include <openssl/asn1_mac.h> | |
66 | #include <openssl/x509.h> | |
3eeaab4b | 67 | #ifndef OPENSSL_NO_RSA |
60a938c6 | 68 | #include <openssl/rsa.h> |
3eeaab4b NL |
69 | #endif |
70 | #ifndef OPENSSL_NO_DSA | |
60a938c6 | 71 | #include <openssl/dsa.h> |
3eeaab4b NL |
72 | #endif |
73 | #ifndef OPENSSL_NO_DH | |
60a938c6 | 74 | #include <openssl/dh.h> |
3eeaab4b | 75 | #endif |
d02b48c6 | 76 | |
18e377b4 DSH |
77 | #include "asn1_locl.h" |
78 | ||
d02b48c6 | 79 | static void EVP_PKEY_free_it(EVP_PKEY *x); |
bb2297a4 | 80 | |
6b691a5c | 81 | int EVP_PKEY_bits(EVP_PKEY *pkey) |
58964a49 | 82 | { |
6f81892e DSH |
83 | if (pkey && pkey->ameth && pkey->ameth->pkey_bits) |
84 | return pkey->ameth->pkey_bits(pkey); | |
85 | return 0; | |
58964a49 RE |
86 | } |
87 | ||
6b691a5c | 88 | int EVP_PKEY_size(EVP_PKEY *pkey) |
d02b48c6 | 89 | { |
6f81892e DSH |
90 | if (pkey && pkey->ameth && pkey->ameth->pkey_size) |
91 | return pkey->ameth->pkey_size(pkey); | |
92 | return 0; | |
d02b48c6 RE |
93 | } |
94 | ||
6b691a5c | 95 | int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode) |
d02b48c6 | 96 | { |
cf1b7d96 | 97 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
98 | if (pkey->type == EVP_PKEY_DSA) |
99 | { | |
bc8a9f1f | 100 | int ret=pkey->save_parameters; |
d02b48c6 RE |
101 | |
102 | if (mode >= 0) | |
103 | pkey->save_parameters=mode; | |
104 | return(ret); | |
105 | } | |
4d94ae00 | 106 | #endif |
5488bb61 BM |
107 | #ifndef OPENSSL_NO_EC |
108 | if (pkey->type == EVP_PKEY_EC) | |
4d94ae00 BM |
109 | { |
110 | int ret = pkey->save_parameters; | |
111 | ||
112 | if (mode >= 0) | |
113 | pkey->save_parameters = mode; | |
114 | return(ret); | |
115 | } | |
d02b48c6 RE |
116 | #endif |
117 | return(0); | |
118 | } | |
119 | ||
a8b72844 | 120 | int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) |
d02b48c6 RE |
121 | { |
122 | if (to->type != from->type) | |
123 | { | |
124 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES); | |
58964a49 | 125 | goto err; |
d02b48c6 RE |
126 | } |
127 | ||
128 | if (EVP_PKEY_missing_parameters(from)) | |
129 | { | |
657e60fa | 130 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARAMETERS); |
58964a49 | 131 | goto err; |
d02b48c6 | 132 | } |
6f81892e DSH |
133 | if (from->ameth && from->ameth->param_copy) |
134 | return from->ameth->param_copy(to, from); | |
d02b48c6 | 135 | err: |
6f81892e | 136 | return 0; |
d02b48c6 RE |
137 | } |
138 | ||
af0f0f3e | 139 | int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey) |
d02b48c6 | 140 | { |
6f81892e DSH |
141 | if (pkey->ameth && pkey->ameth->param_missing) |
142 | return pkey->ameth->param_missing(pkey); | |
143 | return 0; | |
d02b48c6 RE |
144 | } |
145 | ||
af0f0f3e | 146 | int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) |
58964a49 | 147 | { |
6f81892e DSH |
148 | if (a->type != b->type) |
149 | return -1; | |
150 | if (a->ameth && a->ameth->param_cmp) | |
151 | return a->ameth->param_cmp(a, b); | |
b4634358 | 152 | return -2; |
58964a49 RE |
153 | } |
154 | ||
af0f0f3e | 155 | int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b) |
e6526fbf RL |
156 | { |
157 | if (a->type != b->type) | |
158 | return -1; | |
159 | ||
7b36590b RL |
160 | if (EVP_PKEY_cmp_parameters(a, b) == 0) |
161 | return 0; | |
a8b72844 | 162 | |
6f81892e DSH |
163 | if (a->ameth && a->ameth->pub_cmp) |
164 | return a->ameth->pub_cmp(a, b); | |
e6526fbf | 165 | |
6f81892e | 166 | return -2; |
e6526fbf RL |
167 | } |
168 | ||
6b691a5c | 169 | EVP_PKEY *EVP_PKEY_new(void) |
d02b48c6 RE |
170 | { |
171 | EVP_PKEY *ret; | |
172 | ||
26a3a48d | 173 | ret=(EVP_PKEY *)OPENSSL_malloc(sizeof(EVP_PKEY)); |
d02b48c6 RE |
174 | if (ret == NULL) |
175 | { | |
176 | EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE); | |
177 | return(NULL); | |
178 | } | |
179 | ret->type=EVP_PKEY_NONE; | |
180 | ret->references=1; | |
6f81892e | 181 | ret->ameth=NULL; |
d02b48c6 RE |
182 | ret->pkey.ptr=NULL; |
183 | ret->attributes=NULL; | |
184 | ret->save_parameters=1; | |
185 | return(ret); | |
186 | } | |
187 | ||
732a40e1 | 188 | int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key) |
d02b48c6 | 189 | { |
6f81892e | 190 | const EVP_PKEY_ASN1_METHOD *ameth; |
d02b48c6 RE |
191 | if (pkey == NULL) return(0); |
192 | if (pkey->pkey.ptr != NULL) | |
193 | EVP_PKEY_free_it(pkey); | |
18e377b4 | 194 | ameth = EVP_PKEY_asn1_find(type); |
6f81892e DSH |
195 | pkey->ameth = ameth; |
196 | pkey->type = ameth->pkey_id; | |
d02b48c6 RE |
197 | pkey->save_type=type; |
198 | pkey->pkey.ptr=key; | |
7f5b6f0f | 199 | return(key != NULL); |
d02b48c6 RE |
200 | } |
201 | ||
db98bbc1 DSH |
202 | void *EVP_PKEY_get0(EVP_PKEY *pkey) |
203 | { | |
204 | return pkey->pkey.ptr; | |
205 | } | |
206 | ||
cf1b7d96 | 207 | #ifndef OPENSSL_NO_RSA |
c7cb16a8 | 208 | int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key) |
52664f50 | 209 | { |
6d3724d3 | 210 | int ret = EVP_PKEY_assign_RSA(pkey, key); |
78435364 | 211 | if(ret) |
6ac4e8bd | 212 | RSA_up_ref(key); |
6d3724d3 | 213 | return ret; |
52664f50 DSH |
214 | } |
215 | ||
c7cb16a8 | 216 | RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey) |
f769ce3e DSH |
217 | { |
218 | if(pkey->type != EVP_PKEY_RSA) { | |
c7cb16a8 | 219 | EVPerr(EVP_F_EVP_PKEY_GET1_RSA, EVP_R_EXPECTING_AN_RSA_KEY); |
f769ce3e DSH |
220 | return NULL; |
221 | } | |
6ac4e8bd | 222 | RSA_up_ref(pkey->pkey.rsa); |
f769ce3e DSH |
223 | return pkey->pkey.rsa; |
224 | } | |
225 | #endif | |
226 | ||
cf1b7d96 | 227 | #ifndef OPENSSL_NO_DSA |
c7cb16a8 | 228 | int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key) |
52664f50 | 229 | { |
6d3724d3 | 230 | int ret = EVP_PKEY_assign_DSA(pkey, key); |
78435364 | 231 | if(ret) |
6ac4e8bd | 232 | DSA_up_ref(key); |
6d3724d3 | 233 | return ret; |
52664f50 DSH |
234 | } |
235 | ||
c7cb16a8 | 236 | DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey) |
f769ce3e DSH |
237 | { |
238 | if(pkey->type != EVP_PKEY_DSA) { | |
c7cb16a8 | 239 | EVPerr(EVP_F_EVP_PKEY_GET1_DSA, EVP_R_EXPECTING_A_DSA_KEY); |
f769ce3e DSH |
240 | return NULL; |
241 | } | |
6ac4e8bd | 242 | DSA_up_ref(pkey->pkey.dsa); |
f769ce3e DSH |
243 | return pkey->pkey.dsa; |
244 | } | |
245 | #endif | |
246 | ||
14a7cfb3 | 247 | #ifndef OPENSSL_NO_EC |
4d94ae00 | 248 | |
14a7cfb3 | 249 | int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) |
4d94ae00 | 250 | { |
14a7cfb3 | 251 | int ret = EVP_PKEY_assign_EC_KEY(pkey,key); |
9dd84053 NL |
252 | if (ret) |
253 | EC_KEY_up_ref(key); | |
254 | return ret; | |
4d94ae00 BM |
255 | } |
256 | ||
14a7cfb3 | 257 | EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey) |
4d94ae00 | 258 | { |
14a7cfb3 | 259 | if (pkey->type != EVP_PKEY_EC) |
4d94ae00 | 260 | { |
14a7cfb3 | 261 | EVPerr(EVP_F_EVP_PKEY_GET1_EC_KEY, EVP_R_EXPECTING_A_EC_KEY); |
4d94ae00 BM |
262 | return NULL; |
263 | } | |
9dd84053 NL |
264 | EC_KEY_up_ref(pkey->pkey.ec); |
265 | return pkey->pkey.ec; | |
4d94ae00 BM |
266 | } |
267 | #endif | |
268 | ||
269 | ||
cf1b7d96 | 270 | #ifndef OPENSSL_NO_DH |
52664f50 | 271 | |
c7cb16a8 | 272 | int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key) |
52664f50 | 273 | { |
6d3724d3 | 274 | int ret = EVP_PKEY_assign_DH(pkey, key); |
78435364 | 275 | if(ret) |
e815d301 | 276 | DH_up_ref(key); |
6d3724d3 | 277 | return ret; |
52664f50 DSH |
278 | } |
279 | ||
c7cb16a8 | 280 | DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey) |
f769ce3e DSH |
281 | { |
282 | if(pkey->type != EVP_PKEY_DH) { | |
c7cb16a8 | 283 | EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY); |
f769ce3e DSH |
284 | return NULL; |
285 | } | |
e815d301 | 286 | DH_up_ref(pkey->pkey.dh); |
f769ce3e DSH |
287 | return pkey->pkey.dh; |
288 | } | |
289 | #endif | |
290 | ||
6b691a5c | 291 | int EVP_PKEY_type(int type) |
d02b48c6 | 292 | { |
6f81892e | 293 | const EVP_PKEY_ASN1_METHOD *ameth; |
18e377b4 | 294 | ameth = EVP_PKEY_asn1_find(type); |
6f81892e DSH |
295 | if (ameth) |
296 | return ameth->pkey_id; | |
297 | return NID_undef; | |
d02b48c6 RE |
298 | } |
299 | ||
6b691a5c | 300 | void EVP_PKEY_free(EVP_PKEY *x) |
d02b48c6 RE |
301 | { |
302 | int i; | |
303 | ||
304 | if (x == NULL) return; | |
305 | ||
306 | i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY); | |
58964a49 RE |
307 | #ifdef REF_PRINT |
308 | REF_PRINT("EVP_PKEY",x); | |
309 | #endif | |
d02b48c6 RE |
310 | if (i > 0) return; |
311 | #ifdef REF_CHECK | |
312 | if (i < 0) | |
313 | { | |
314 | fprintf(stderr,"EVP_PKEY_free, bad reference count\n"); | |
315 | abort(); | |
316 | } | |
317 | #endif | |
318 | EVP_PKEY_free_it(x); | |
b6995add DSH |
319 | if (x->attributes) |
320 | sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free); | |
26a3a48d | 321 | OPENSSL_free(x); |
d02b48c6 RE |
322 | } |
323 | ||
6b691a5c | 324 | static void EVP_PKEY_free_it(EVP_PKEY *x) |
d02b48c6 | 325 | { |
6f81892e DSH |
326 | if (x->ameth && x->ameth->pkey_free) |
327 | x->ameth->pkey_free(x); | |
d02b48c6 RE |
328 | } |
329 | ||
35208f36 DSH |
330 | static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent, |
331 | const char *kstr) | |
332 | { | |
333 | BIO_indent(out, indent, 128); | |
334 | BIO_printf(out, "%s %s, algorithm, unsupported\n", | |
335 | OBJ_nid2ln(pkey->type), kstr); | |
336 | return 1; | |
337 | } | |
338 | ||
339 | int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, | |
340 | int indent, ASN1_PCTX *pctx) | |
341 | { | |
342 | if (pkey->ameth && pkey->ameth->pub_print) | |
343 | return pkey->ameth->pub_print(out, pkey, indent, pctx); | |
344 | ||
345 | return unsup_alg(out, pkey, indent, "Public Key"); | |
346 | } | |
347 | ||
348 | int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, | |
349 | int indent, ASN1_PCTX *pctx) | |
350 | { | |
351 | if (pkey->ameth && pkey->ameth->priv_print) | |
352 | return pkey->ameth->priv_print(out, pkey, indent, pctx); | |
353 | ||
354 | return unsup_alg(out, pkey, indent, "Private Key"); | |
355 | } | |
356 | ||
357 | int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, | |
358 | int indent, ASN1_PCTX *pctx) | |
359 | { | |
360 | if (pkey->ameth && pkey->ameth->param_print) | |
361 | return pkey->ameth->param_print(out, pkey, indent, pctx); | |
362 | return unsup_alg(out, pkey, indent, "Parameters"); | |
363 | } |