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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" | |
ec577822 BM |
61 | #include <openssl/objects.h> |
62 | #include <openssl/evp.h> | |
63 | #include <openssl/asn1_mac.h> | |
64 | #include <openssl/x509.h> | |
d02b48c6 | 65 | |
d02b48c6 | 66 | static void EVP_PKEY_free_it(EVP_PKEY *x); |
6b691a5c | 67 | int EVP_PKEY_bits(EVP_PKEY *pkey) |
58964a49 RE |
68 | { |
69 | #ifndef NO_RSA | |
70 | if (pkey->type == EVP_PKEY_RSA) | |
71 | return(BN_num_bits(pkey->pkey.rsa->n)); | |
72 | else | |
73 | #endif | |
74 | #ifndef NO_DSA | |
75 | if (pkey->type == EVP_PKEY_DSA) | |
76 | return(BN_num_bits(pkey->pkey.dsa->p)); | |
77 | #endif | |
78 | return(0); | |
79 | } | |
80 | ||
6b691a5c | 81 | int EVP_PKEY_size(EVP_PKEY *pkey) |
d02b48c6 | 82 | { |
dfeab068 RE |
83 | if (pkey == NULL) |
84 | return(0); | |
d02b48c6 RE |
85 | #ifndef NO_RSA |
86 | if (pkey->type == EVP_PKEY_RSA) | |
87 | return(RSA_size(pkey->pkey.rsa)); | |
88 | else | |
89 | #endif | |
90 | #ifndef NO_DSA | |
91 | if (pkey->type == EVP_PKEY_DSA) | |
92 | return(DSA_size(pkey->pkey.dsa)); | |
93 | #endif | |
94 | return(0); | |
95 | } | |
96 | ||
6b691a5c | 97 | int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode) |
d02b48c6 RE |
98 | { |
99 | #ifndef NO_DSA | |
100 | if (pkey->type == EVP_PKEY_DSA) | |
101 | { | |
bc8a9f1f | 102 | int ret=pkey->save_parameters; |
d02b48c6 RE |
103 | |
104 | if (mode >= 0) | |
105 | pkey->save_parameters=mode; | |
106 | return(ret); | |
107 | } | |
108 | #endif | |
109 | return(0); | |
110 | } | |
111 | ||
6b691a5c | 112 | int EVP_PKEY_copy_parameters(EVP_PKEY *to, EVP_PKEY *from) |
d02b48c6 RE |
113 | { |
114 | if (to->type != from->type) | |
115 | { | |
116 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES); | |
58964a49 | 117 | goto err; |
d02b48c6 RE |
118 | } |
119 | ||
120 | if (EVP_PKEY_missing_parameters(from)) | |
121 | { | |
657e60fa | 122 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARAMETERS); |
58964a49 | 123 | goto err; |
d02b48c6 RE |
124 | } |
125 | #ifndef NO_DSA | |
126 | if (to->type == EVP_PKEY_DSA) | |
127 | { | |
128 | BIGNUM *a; | |
129 | ||
130 | if ((a=BN_dup(from->pkey.dsa->p)) == NULL) goto err; | |
131 | if (to->pkey.dsa->p != NULL) BN_free(to->pkey.dsa->p); | |
132 | to->pkey.dsa->p=a; | |
133 | ||
134 | if ((a=BN_dup(from->pkey.dsa->q)) == NULL) goto err; | |
135 | if (to->pkey.dsa->q != NULL) BN_free(to->pkey.dsa->q); | |
136 | to->pkey.dsa->q=a; | |
137 | ||
138 | if ((a=BN_dup(from->pkey.dsa->g)) == NULL) goto err; | |
139 | if (to->pkey.dsa->g != NULL) BN_free(to->pkey.dsa->g); | |
140 | to->pkey.dsa->g=a; | |
141 | } | |
142 | #endif | |
143 | return(1); | |
144 | err: | |
145 | return(0); | |
146 | } | |
147 | ||
6b691a5c | 148 | int EVP_PKEY_missing_parameters(EVP_PKEY *pkey) |
d02b48c6 RE |
149 | { |
150 | #ifndef NO_DSA | |
151 | if (pkey->type == EVP_PKEY_DSA) | |
152 | { | |
153 | DSA *dsa; | |
154 | ||
155 | dsa=pkey->pkey.dsa; | |
156 | if ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL)) | |
157 | return(1); | |
158 | } | |
159 | #endif | |
160 | return(0); | |
161 | } | |
162 | ||
6b691a5c | 163 | int EVP_PKEY_cmp_parameters(EVP_PKEY *a, EVP_PKEY *b) |
58964a49 RE |
164 | { |
165 | #ifndef NO_DSA | |
166 | if ((a->type == EVP_PKEY_DSA) && (b->type == EVP_PKEY_DSA)) | |
167 | { | |
168 | if ( BN_cmp(a->pkey.dsa->p,b->pkey.dsa->p) || | |
169 | BN_cmp(a->pkey.dsa->q,b->pkey.dsa->q) || | |
170 | BN_cmp(a->pkey.dsa->g,b->pkey.dsa->g)) | |
171 | return(0); | |
172 | else | |
173 | return(1); | |
174 | } | |
175 | #endif | |
176 | return(-1); | |
177 | } | |
178 | ||
6b691a5c | 179 | EVP_PKEY *EVP_PKEY_new(void) |
d02b48c6 RE |
180 | { |
181 | EVP_PKEY *ret; | |
182 | ||
26a3a48d | 183 | ret=(EVP_PKEY *)OPENSSL_malloc(sizeof(EVP_PKEY)); |
d02b48c6 RE |
184 | if (ret == NULL) |
185 | { | |
186 | EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE); | |
187 | return(NULL); | |
188 | } | |
189 | ret->type=EVP_PKEY_NONE; | |
190 | ret->references=1; | |
191 | ret->pkey.ptr=NULL; | |
192 | ret->attributes=NULL; | |
193 | ret->save_parameters=1; | |
194 | return(ret); | |
195 | } | |
196 | ||
6b691a5c | 197 | int EVP_PKEY_assign(EVP_PKEY *pkey, int type, char *key) |
d02b48c6 RE |
198 | { |
199 | if (pkey == NULL) return(0); | |
200 | if (pkey->pkey.ptr != NULL) | |
201 | EVP_PKEY_free_it(pkey); | |
202 | pkey->type=EVP_PKEY_type(type); | |
203 | pkey->save_type=type; | |
204 | pkey->pkey.ptr=key; | |
7f5b6f0f | 205 | return(key != NULL); |
d02b48c6 RE |
206 | } |
207 | ||
f769ce3e | 208 | #ifndef NO_RSA |
c7cb16a8 | 209 | int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key) |
52664f50 | 210 | { |
6d3724d3 DSH |
211 | int ret = EVP_PKEY_assign_RSA(pkey, key); |
212 | if(ret) CRYPTO_add(&key->references, 1, CRYPTO_LOCK_RSA); | |
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 | } | |
222 | CRYPTO_add(&pkey->pkey.rsa->references, 1, CRYPTO_LOCK_RSA); | |
223 | return pkey->pkey.rsa; | |
224 | } | |
225 | #endif | |
226 | ||
227 | #ifndef NO_DSA | |
c7cb16a8 | 228 | int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key) |
52664f50 | 229 | { |
6d3724d3 DSH |
230 | int ret = EVP_PKEY_assign_DSA(pkey, key); |
231 | if(ret) CRYPTO_add(&key->references, 1, CRYPTO_LOCK_DSA); | |
232 | return ret; | |
52664f50 DSH |
233 | } |
234 | ||
c7cb16a8 | 235 | DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey) |
f769ce3e DSH |
236 | { |
237 | if(pkey->type != EVP_PKEY_DSA) { | |
c7cb16a8 | 238 | EVPerr(EVP_F_EVP_PKEY_GET1_DSA, EVP_R_EXPECTING_A_DSA_KEY); |
f769ce3e DSH |
239 | return NULL; |
240 | } | |
52664f50 | 241 | CRYPTO_add(&pkey->pkey.dsa->references, 1, CRYPTO_LOCK_DSA); |
f769ce3e DSH |
242 | return pkey->pkey.dsa; |
243 | } | |
244 | #endif | |
245 | ||
246 | #ifndef NO_DH | |
52664f50 | 247 | |
c7cb16a8 | 248 | int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key) |
52664f50 | 249 | { |
6d3724d3 DSH |
250 | int ret = EVP_PKEY_assign_DH(pkey, key); |
251 | if(ret) CRYPTO_add(&key->references, 1, CRYPTO_LOCK_DH); | |
252 | return ret; | |
52664f50 DSH |
253 | } |
254 | ||
c7cb16a8 | 255 | DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey) |
f769ce3e DSH |
256 | { |
257 | if(pkey->type != EVP_PKEY_DH) { | |
c7cb16a8 | 258 | EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY); |
f769ce3e DSH |
259 | return NULL; |
260 | } | |
261 | CRYPTO_add(&pkey->pkey.dh->references, 1, CRYPTO_LOCK_DH); | |
262 | return pkey->pkey.dh; | |
263 | } | |
264 | #endif | |
265 | ||
6b691a5c | 266 | int EVP_PKEY_type(int type) |
d02b48c6 RE |
267 | { |
268 | switch (type) | |
269 | { | |
270 | case EVP_PKEY_RSA: | |
271 | case EVP_PKEY_RSA2: | |
272 | return(EVP_PKEY_RSA); | |
273 | case EVP_PKEY_DSA: | |
58964a49 | 274 | case EVP_PKEY_DSA1: |
d02b48c6 RE |
275 | case EVP_PKEY_DSA2: |
276 | case EVP_PKEY_DSA3: | |
58964a49 | 277 | case EVP_PKEY_DSA4: |
d02b48c6 RE |
278 | return(EVP_PKEY_DSA); |
279 | case EVP_PKEY_DH: | |
280 | return(EVP_PKEY_DH); | |
281 | default: | |
282 | return(NID_undef); | |
283 | } | |
284 | } | |
285 | ||
6b691a5c | 286 | void EVP_PKEY_free(EVP_PKEY *x) |
d02b48c6 RE |
287 | { |
288 | int i; | |
289 | ||
290 | if (x == NULL) return; | |
291 | ||
292 | i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY); | |
58964a49 RE |
293 | #ifdef REF_PRINT |
294 | REF_PRINT("EVP_PKEY",x); | |
295 | #endif | |
d02b48c6 RE |
296 | if (i > 0) return; |
297 | #ifdef REF_CHECK | |
298 | if (i < 0) | |
299 | { | |
300 | fprintf(stderr,"EVP_PKEY_free, bad reference count\n"); | |
301 | abort(); | |
302 | } | |
303 | #endif | |
304 | EVP_PKEY_free_it(x); | |
26a3a48d | 305 | OPENSSL_free(x); |
d02b48c6 RE |
306 | } |
307 | ||
6b691a5c | 308 | static void EVP_PKEY_free_it(EVP_PKEY *x) |
d02b48c6 RE |
309 | { |
310 | switch (x->type) | |
311 | { | |
312 | #ifndef NO_RSA | |
313 | case EVP_PKEY_RSA: | |
314 | case EVP_PKEY_RSA2: | |
315 | RSA_free(x->pkey.rsa); | |
316 | break; | |
317 | #endif | |
318 | #ifndef NO_DSA | |
319 | case EVP_PKEY_DSA: | |
320 | case EVP_PKEY_DSA2: | |
321 | case EVP_PKEY_DSA3: | |
58964a49 | 322 | case EVP_PKEY_DSA4: |
d02b48c6 RE |
323 | DSA_free(x->pkey.dsa); |
324 | break; | |
325 | #endif | |
326 | #ifndef NO_DH | |
327 | case EVP_PKEY_DH: | |
328 | DH_free(x->pkey.dh); | |
329 | break; | |
330 | #endif | |
331 | } | |
332 | } | |
333 |