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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 | |
d02b48c6 | 77 | static void EVP_PKEY_free_it(EVP_PKEY *x); |
bb2297a4 | 78 | |
6b691a5c | 79 | int EVP_PKEY_bits(EVP_PKEY *pkey) |
58964a49 | 80 | { |
6f81892e DSH |
81 | if (pkey && pkey->ameth && pkey->ameth->pkey_bits) |
82 | return pkey->ameth->pkey_bits(pkey); | |
83 | return 0; | |
58964a49 RE |
84 | } |
85 | ||
6b691a5c | 86 | int EVP_PKEY_size(EVP_PKEY *pkey) |
d02b48c6 | 87 | { |
6f81892e DSH |
88 | if (pkey && pkey->ameth && pkey->ameth->pkey_size) |
89 | return pkey->ameth->pkey_size(pkey); | |
90 | return 0; | |
d02b48c6 RE |
91 | } |
92 | ||
6b691a5c | 93 | int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode) |
d02b48c6 | 94 | { |
cf1b7d96 | 95 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
96 | if (pkey->type == EVP_PKEY_DSA) |
97 | { | |
bc8a9f1f | 98 | int ret=pkey->save_parameters; |
d02b48c6 RE |
99 | |
100 | if (mode >= 0) | |
101 | pkey->save_parameters=mode; | |
102 | return(ret); | |
103 | } | |
4d94ae00 | 104 | #endif |
5488bb61 BM |
105 | #ifndef OPENSSL_NO_EC |
106 | if (pkey->type == EVP_PKEY_EC) | |
4d94ae00 BM |
107 | { |
108 | int ret = pkey->save_parameters; | |
109 | ||
110 | if (mode >= 0) | |
111 | pkey->save_parameters = mode; | |
112 | return(ret); | |
113 | } | |
d02b48c6 RE |
114 | #endif |
115 | return(0); | |
116 | } | |
117 | ||
a8b72844 | 118 | int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) |
d02b48c6 RE |
119 | { |
120 | if (to->type != from->type) | |
121 | { | |
122 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES); | |
58964a49 | 123 | goto err; |
d02b48c6 RE |
124 | } |
125 | ||
126 | if (EVP_PKEY_missing_parameters(from)) | |
127 | { | |
657e60fa | 128 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARAMETERS); |
58964a49 | 129 | goto err; |
d02b48c6 | 130 | } |
6f81892e DSH |
131 | if (from->ameth && from->ameth->param_copy) |
132 | return from->ameth->param_copy(to, from); | |
d02b48c6 | 133 | err: |
6f81892e | 134 | return 0; |
d02b48c6 RE |
135 | } |
136 | ||
af0f0f3e | 137 | int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey) |
d02b48c6 | 138 | { |
6f81892e DSH |
139 | if (pkey->ameth && pkey->ameth->param_missing) |
140 | return pkey->ameth->param_missing(pkey); | |
141 | return 0; | |
d02b48c6 RE |
142 | } |
143 | ||
af0f0f3e | 144 | int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) |
58964a49 | 145 | { |
6f81892e DSH |
146 | if (a->type != b->type) |
147 | return -1; | |
148 | if (a->ameth && a->ameth->param_cmp) | |
149 | return a->ameth->param_cmp(a, b); | |
150 | return -1; | |
58964a49 RE |
151 | } |
152 | ||
af0f0f3e | 153 | int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b) |
e6526fbf RL |
154 | { |
155 | if (a->type != b->type) | |
156 | return -1; | |
157 | ||
7b36590b RL |
158 | if (EVP_PKEY_cmp_parameters(a, b) == 0) |
159 | return 0; | |
a8b72844 | 160 | |
6f81892e DSH |
161 | if (a->ameth && a->ameth->pub_cmp) |
162 | return a->ameth->pub_cmp(a, b); | |
e6526fbf | 163 | |
6f81892e | 164 | return -2; |
e6526fbf RL |
165 | } |
166 | ||
6b691a5c | 167 | EVP_PKEY *EVP_PKEY_new(void) |
d02b48c6 RE |
168 | { |
169 | EVP_PKEY *ret; | |
170 | ||
26a3a48d | 171 | ret=(EVP_PKEY *)OPENSSL_malloc(sizeof(EVP_PKEY)); |
d02b48c6 RE |
172 | if (ret == NULL) |
173 | { | |
174 | EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE); | |
175 | return(NULL); | |
176 | } | |
177 | ret->type=EVP_PKEY_NONE; | |
178 | ret->references=1; | |
6f81892e | 179 | ret->ameth=NULL; |
d02b48c6 RE |
180 | ret->pkey.ptr=NULL; |
181 | ret->attributes=NULL; | |
182 | ret->save_parameters=1; | |
183 | return(ret); | |
184 | } | |
185 | ||
6b691a5c | 186 | int EVP_PKEY_assign(EVP_PKEY *pkey, int type, char *key) |
d02b48c6 | 187 | { |
6f81892e | 188 | const EVP_PKEY_ASN1_METHOD *ameth; |
d02b48c6 RE |
189 | if (pkey == NULL) return(0); |
190 | if (pkey->pkey.ptr != NULL) | |
191 | EVP_PKEY_free_it(pkey); | |
6f81892e DSH |
192 | ameth = EVP_PKEY_ASN1_find(type); |
193 | pkey->ameth = ameth; | |
194 | pkey->type = ameth->pkey_id; | |
d02b48c6 RE |
195 | pkey->save_type=type; |
196 | pkey->pkey.ptr=key; | |
7f5b6f0f | 197 | return(key != NULL); |
d02b48c6 RE |
198 | } |
199 | ||
cf1b7d96 | 200 | #ifndef OPENSSL_NO_RSA |
c7cb16a8 | 201 | int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key) |
52664f50 | 202 | { |
6d3724d3 | 203 | int ret = EVP_PKEY_assign_RSA(pkey, key); |
78435364 | 204 | if(ret) |
6ac4e8bd | 205 | RSA_up_ref(key); |
6d3724d3 | 206 | return ret; |
52664f50 DSH |
207 | } |
208 | ||
c7cb16a8 | 209 | RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey) |
f769ce3e DSH |
210 | { |
211 | if(pkey->type != EVP_PKEY_RSA) { | |
c7cb16a8 | 212 | EVPerr(EVP_F_EVP_PKEY_GET1_RSA, EVP_R_EXPECTING_AN_RSA_KEY); |
f769ce3e DSH |
213 | return NULL; |
214 | } | |
6ac4e8bd | 215 | RSA_up_ref(pkey->pkey.rsa); |
f769ce3e DSH |
216 | return pkey->pkey.rsa; |
217 | } | |
218 | #endif | |
219 | ||
cf1b7d96 | 220 | #ifndef OPENSSL_NO_DSA |
c7cb16a8 | 221 | int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key) |
52664f50 | 222 | { |
6d3724d3 | 223 | int ret = EVP_PKEY_assign_DSA(pkey, key); |
78435364 | 224 | if(ret) |
6ac4e8bd | 225 | DSA_up_ref(key); |
6d3724d3 | 226 | return ret; |
52664f50 DSH |
227 | } |
228 | ||
c7cb16a8 | 229 | DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey) |
f769ce3e DSH |
230 | { |
231 | if(pkey->type != EVP_PKEY_DSA) { | |
c7cb16a8 | 232 | EVPerr(EVP_F_EVP_PKEY_GET1_DSA, EVP_R_EXPECTING_A_DSA_KEY); |
f769ce3e DSH |
233 | return NULL; |
234 | } | |
6ac4e8bd | 235 | DSA_up_ref(pkey->pkey.dsa); |
f769ce3e DSH |
236 | return pkey->pkey.dsa; |
237 | } | |
238 | #endif | |
239 | ||
14a7cfb3 | 240 | #ifndef OPENSSL_NO_EC |
4d94ae00 | 241 | |
14a7cfb3 | 242 | int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) |
4d94ae00 | 243 | { |
14a7cfb3 | 244 | int ret = EVP_PKEY_assign_EC_KEY(pkey,key); |
9dd84053 NL |
245 | if (ret) |
246 | EC_KEY_up_ref(key); | |
247 | return ret; | |
4d94ae00 BM |
248 | } |
249 | ||
14a7cfb3 | 250 | EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey) |
4d94ae00 | 251 | { |
14a7cfb3 | 252 | if (pkey->type != EVP_PKEY_EC) |
4d94ae00 | 253 | { |
14a7cfb3 | 254 | EVPerr(EVP_F_EVP_PKEY_GET1_EC_KEY, EVP_R_EXPECTING_A_EC_KEY); |
4d94ae00 BM |
255 | return NULL; |
256 | } | |
9dd84053 NL |
257 | EC_KEY_up_ref(pkey->pkey.ec); |
258 | return pkey->pkey.ec; | |
4d94ae00 BM |
259 | } |
260 | #endif | |
261 | ||
262 | ||
cf1b7d96 | 263 | #ifndef OPENSSL_NO_DH |
52664f50 | 264 | |
c7cb16a8 | 265 | int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key) |
52664f50 | 266 | { |
6d3724d3 | 267 | int ret = EVP_PKEY_assign_DH(pkey, key); |
78435364 | 268 | if(ret) |
e815d301 | 269 | DH_up_ref(key); |
6d3724d3 | 270 | return ret; |
52664f50 DSH |
271 | } |
272 | ||
c7cb16a8 | 273 | DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey) |
f769ce3e DSH |
274 | { |
275 | if(pkey->type != EVP_PKEY_DH) { | |
c7cb16a8 | 276 | EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY); |
f769ce3e DSH |
277 | return NULL; |
278 | } | |
e815d301 | 279 | DH_up_ref(pkey->pkey.dh); |
f769ce3e DSH |
280 | return pkey->pkey.dh; |
281 | } | |
282 | #endif | |
283 | ||
6b691a5c | 284 | int EVP_PKEY_type(int type) |
d02b48c6 | 285 | { |
6f81892e DSH |
286 | const EVP_PKEY_ASN1_METHOD *ameth; |
287 | ameth = EVP_PKEY_ASN1_find(type); | |
288 | if (ameth) | |
289 | return ameth->pkey_id; | |
290 | return NID_undef; | |
d02b48c6 RE |
291 | } |
292 | ||
6b691a5c | 293 | void EVP_PKEY_free(EVP_PKEY *x) |
d02b48c6 RE |
294 | { |
295 | int i; | |
296 | ||
297 | if (x == NULL) return; | |
298 | ||
299 | i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY); | |
58964a49 RE |
300 | #ifdef REF_PRINT |
301 | REF_PRINT("EVP_PKEY",x); | |
302 | #endif | |
d02b48c6 RE |
303 | if (i > 0) return; |
304 | #ifdef REF_CHECK | |
305 | if (i < 0) | |
306 | { | |
307 | fprintf(stderr,"EVP_PKEY_free, bad reference count\n"); | |
308 | abort(); | |
309 | } | |
310 | #endif | |
311 | EVP_PKEY_free_it(x); | |
b6995add DSH |
312 | if (x->attributes) |
313 | sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free); | |
26a3a48d | 314 | OPENSSL_free(x); |
d02b48c6 RE |
315 | } |
316 | ||
6b691a5c | 317 | static void EVP_PKEY_free_it(EVP_PKEY *x) |
d02b48c6 | 318 | { |
6f81892e DSH |
319 | if (x->ameth && x->ameth->pkey_free) |
320 | x->ameth->pkey_free(x); | |
d02b48c6 RE |
321 | } |
322 | ||
35208f36 DSH |
323 | static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent, |
324 | const char *kstr) | |
325 | { | |
326 | BIO_indent(out, indent, 128); | |
327 | BIO_printf(out, "%s %s, algorithm, unsupported\n", | |
328 | OBJ_nid2ln(pkey->type), kstr); | |
329 | return 1; | |
330 | } | |
331 | ||
332 | int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, | |
333 | int indent, ASN1_PCTX *pctx) | |
334 | { | |
335 | if (pkey->ameth && pkey->ameth->pub_print) | |
336 | return pkey->ameth->pub_print(out, pkey, indent, pctx); | |
337 | ||
338 | return unsup_alg(out, pkey, indent, "Public Key"); | |
339 | } | |
340 | ||
341 | int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, | |
342 | int indent, ASN1_PCTX *pctx) | |
343 | { | |
344 | if (pkey->ameth && pkey->ameth->priv_print) | |
345 | return pkey->ameth->priv_print(out, pkey, indent, pctx); | |
346 | ||
347 | return unsup_alg(out, pkey, indent, "Private Key"); | |
348 | } | |
349 | ||
350 | int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, | |
351 | int indent, ASN1_PCTX *pctx) | |
352 | { | |
353 | if (pkey->ameth && pkey->ameth->param_print) | |
354 | return pkey->ameth->param_print(out, pkey, indent, pctx); | |
355 | return unsup_alg(out, pkey, indent, "Parameters"); | |
356 | } |