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1 | /* crypto/evp/p_lib.c */ | |
2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
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" | |
61 | #include "objects.h" | |
62 | #include "evp.h" | |
63 | #include "asn1_mac.h" | |
64 | #include "x509.h" | |
65 | ||
66 | /* EVPerr(EVP_F_D2I_PKEY,EVP_R_UNSUPPORTED_CIPHER); */ | |
67 | /* EVPerr(EVP_F_D2I_PKEY,EVP_R_IV_TOO_LARGE); */ | |
68 | ||
69 | #ifndef NOPROTO | |
70 | static void EVP_PKEY_free_it(EVP_PKEY *x); | |
71 | #else | |
72 | static void EVP_PKEY_free_it(); | |
73 | #endif | |
74 | ||
75 | int EVP_PKEY_bits(pkey) | |
76 | EVP_PKEY *pkey; | |
77 | { | |
78 | #ifndef NO_RSA | |
79 | if (pkey->type == EVP_PKEY_RSA) | |
80 | return(BN_num_bits(pkey->pkey.rsa->n)); | |
81 | else | |
82 | #endif | |
83 | #ifndef NO_DSA | |
84 | if (pkey->type == EVP_PKEY_DSA) | |
85 | return(BN_num_bits(pkey->pkey.dsa->p)); | |
86 | #endif | |
87 | return(0); | |
88 | } | |
89 | ||
90 | int EVP_PKEY_size(pkey) | |
91 | EVP_PKEY *pkey; | |
92 | { | |
93 | if (pkey == NULL) | |
94 | return(0); | |
95 | #ifndef NO_RSA | |
96 | if (pkey->type == EVP_PKEY_RSA) | |
97 | return(RSA_size(pkey->pkey.rsa)); | |
98 | else | |
99 | #endif | |
100 | #ifndef NO_DSA | |
101 | if (pkey->type == EVP_PKEY_DSA) | |
102 | return(DSA_size(pkey->pkey.dsa)); | |
103 | #endif | |
104 | return(0); | |
105 | } | |
106 | ||
107 | int EVP_PKEY_save_parameters(pkey,mode) | |
108 | EVP_PKEY *pkey; | |
109 | int mode; | |
110 | { | |
111 | #ifndef NO_DSA | |
112 | if (pkey->type == EVP_PKEY_DSA) | |
113 | { | |
114 | int ret=pkey->save_parameters=mode; | |
115 | ||
116 | if (mode >= 0) | |
117 | pkey->save_parameters=mode; | |
118 | return(ret); | |
119 | } | |
120 | #endif | |
121 | return(0); | |
122 | } | |
123 | ||
124 | int EVP_PKEY_copy_parameters(to,from) | |
125 | EVP_PKEY *to,*from; | |
126 | { | |
127 | if (to->type != from->type) | |
128 | { | |
129 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES); | |
130 | goto err; | |
131 | } | |
132 | ||
133 | if (EVP_PKEY_missing_parameters(from)) | |
134 | { | |
135 | EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARMATERS); | |
136 | goto err; | |
137 | } | |
138 | #ifndef NO_DSA | |
139 | if (to->type == EVP_PKEY_DSA) | |
140 | { | |
141 | BIGNUM *a; | |
142 | ||
143 | if ((a=BN_dup(from->pkey.dsa->p)) == NULL) goto err; | |
144 | if (to->pkey.dsa->p != NULL) BN_free(to->pkey.dsa->p); | |
145 | to->pkey.dsa->p=a; | |
146 | ||
147 | if ((a=BN_dup(from->pkey.dsa->q)) == NULL) goto err; | |
148 | if (to->pkey.dsa->q != NULL) BN_free(to->pkey.dsa->q); | |
149 | to->pkey.dsa->q=a; | |
150 | ||
151 | if ((a=BN_dup(from->pkey.dsa->g)) == NULL) goto err; | |
152 | if (to->pkey.dsa->g != NULL) BN_free(to->pkey.dsa->g); | |
153 | to->pkey.dsa->g=a; | |
154 | } | |
155 | #endif | |
156 | return(1); | |
157 | err: | |
158 | return(0); | |
159 | } | |
160 | ||
161 | int EVP_PKEY_missing_parameters(pkey) | |
162 | EVP_PKEY *pkey; | |
163 | { | |
164 | #ifndef NO_DSA | |
165 | if (pkey->type == EVP_PKEY_DSA) | |
166 | { | |
167 | DSA *dsa; | |
168 | ||
169 | dsa=pkey->pkey.dsa; | |
170 | if ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL)) | |
171 | return(1); | |
172 | } | |
173 | #endif | |
174 | return(0); | |
175 | } | |
176 | ||
177 | int EVP_PKEY_cmp_parameters(a,b) | |
178 | EVP_PKEY *a,*b; | |
179 | { | |
180 | #ifndef NO_DSA | |
181 | if ((a->type == EVP_PKEY_DSA) && (b->type == EVP_PKEY_DSA)) | |
182 | { | |
183 | if ( BN_cmp(a->pkey.dsa->p,b->pkey.dsa->p) || | |
184 | BN_cmp(a->pkey.dsa->q,b->pkey.dsa->q) || | |
185 | BN_cmp(a->pkey.dsa->g,b->pkey.dsa->g)) | |
186 | return(0); | |
187 | else | |
188 | return(1); | |
189 | } | |
190 | #endif | |
191 | return(-1); | |
192 | } | |
193 | ||
194 | EVP_PKEY *EVP_PKEY_new() | |
195 | { | |
196 | EVP_PKEY *ret; | |
197 | ||
198 | ret=(EVP_PKEY *)Malloc(sizeof(EVP_PKEY)); | |
199 | if (ret == NULL) | |
200 | { | |
201 | EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE); | |
202 | return(NULL); | |
203 | } | |
204 | ret->type=EVP_PKEY_NONE; | |
205 | ret->references=1; | |
206 | ret->pkey.ptr=NULL; | |
207 | ret->attributes=NULL; | |
208 | ret->save_parameters=1; | |
209 | return(ret); | |
210 | } | |
211 | ||
212 | int EVP_PKEY_assign(pkey,type,key) | |
213 | EVP_PKEY *pkey; | |
214 | int type; | |
215 | char *key; | |
216 | { | |
217 | if (pkey == NULL) return(0); | |
218 | if (pkey->pkey.ptr != NULL) | |
219 | EVP_PKEY_free_it(pkey); | |
220 | pkey->type=EVP_PKEY_type(type); | |
221 | pkey->save_type=type; | |
222 | pkey->pkey.ptr=key; | |
223 | return(1); | |
224 | } | |
225 | ||
226 | int EVP_PKEY_type(type) | |
227 | int type; | |
228 | { | |
229 | switch (type) | |
230 | { | |
231 | case EVP_PKEY_RSA: | |
232 | case EVP_PKEY_RSA2: | |
233 | return(EVP_PKEY_RSA); | |
234 | case EVP_PKEY_DSA: | |
235 | case EVP_PKEY_DSA1: | |
236 | case EVP_PKEY_DSA2: | |
237 | case EVP_PKEY_DSA3: | |
238 | case EVP_PKEY_DSA4: | |
239 | return(EVP_PKEY_DSA); | |
240 | case EVP_PKEY_DH: | |
241 | return(EVP_PKEY_DH); | |
242 | default: | |
243 | return(NID_undef); | |
244 | } | |
245 | } | |
246 | ||
247 | void EVP_PKEY_free(x) | |
248 | EVP_PKEY *x; | |
249 | { | |
250 | int i; | |
251 | ||
252 | if (x == NULL) return; | |
253 | ||
254 | i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY); | |
255 | #ifdef REF_PRINT | |
256 | REF_PRINT("EVP_PKEY",x); | |
257 | #endif | |
258 | if (i > 0) return; | |
259 | #ifdef REF_CHECK | |
260 | if (i < 0) | |
261 | { | |
262 | fprintf(stderr,"EVP_PKEY_free, bad reference count\n"); | |
263 | abort(); | |
264 | } | |
265 | #endif | |
266 | EVP_PKEY_free_it(x); | |
267 | Free((char *)x); | |
268 | } | |
269 | ||
270 | static void EVP_PKEY_free_it(x) | |
271 | EVP_PKEY *x; | |
272 | { | |
273 | switch (x->type) | |
274 | { | |
275 | #ifndef NO_RSA | |
276 | case EVP_PKEY_RSA: | |
277 | case EVP_PKEY_RSA2: | |
278 | RSA_free(x->pkey.rsa); | |
279 | break; | |
280 | #endif | |
281 | #ifndef NO_DSA | |
282 | case EVP_PKEY_DSA: | |
283 | case EVP_PKEY_DSA2: | |
284 | case EVP_PKEY_DSA3: | |
285 | case EVP_PKEY_DSA4: | |
286 | DSA_free(x->pkey.dsa); | |
287 | break; | |
288 | #endif | |
289 | #ifndef NO_DH | |
290 | case EVP_PKEY_DH: | |
291 | DH_free(x->pkey.dh); | |
292 | break; | |
293 | #endif | |
294 | } | |
295 | } | |
296 |