Line data Source code
1 : /* crypto/pem/pem_pkey.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 <openssl/buffer.h>
62 : #include <openssl/objects.h>
63 : #include <openssl/evp.h>
64 : #include <openssl/rand.h>
65 : #include <openssl/x509.h>
66 : #include <openssl/pkcs12.h>
67 : #include <openssl/pem.h>
68 : #ifndef OPENSSL_NO_ENGINE
69 : # include <openssl/engine.h>
70 : #endif
71 : #ifndef OPENSSL_NO_DH
72 : # include <openssl/dh.h>
73 : #endif
74 : #include "asn1_locl.h"
75 :
76 : int pem_check_suffix(const char *pem_str, const char *suffix);
77 :
78 450 : EVP_PKEY *PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb,
79 : void *u)
80 : {
81 450 : char *nm = NULL;
82 450 : const unsigned char *p = NULL;
83 450 : unsigned char *data = NULL;
84 : long len;
85 : int slen;
86 : EVP_PKEY *ret = NULL;
87 :
88 450 : if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp, cb, u))
89 : return NULL;
90 450 : p = data;
91 :
92 450 : if (strcmp(nm, PEM_STRING_PKCS8INF) == 0) {
93 : PKCS8_PRIV_KEY_INFO *p8inf;
94 12 : p8inf = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
95 12 : if (!p8inf)
96 : goto p8err;
97 12 : ret = EVP_PKCS82PKEY(p8inf);
98 12 : if (x) {
99 0 : if (*x)
100 0 : EVP_PKEY_free((EVP_PKEY *)*x);
101 0 : *x = ret;
102 : }
103 12 : PKCS8_PRIV_KEY_INFO_free(p8inf);
104 438 : } else if (strcmp(nm, PEM_STRING_PKCS8) == 0) {
105 : PKCS8_PRIV_KEY_INFO *p8inf;
106 : X509_SIG *p8;
107 : int klen;
108 : char psbuf[PEM_BUFSIZE];
109 0 : p8 = d2i_X509_SIG(NULL, &p, len);
110 0 : if (!p8)
111 : goto p8err;
112 0 : if (cb)
113 0 : klen = cb(psbuf, PEM_BUFSIZE, 0, u);
114 : else
115 0 : klen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u);
116 0 : if (klen <= 0) {
117 0 : PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY, PEM_R_BAD_PASSWORD_READ);
118 0 : X509_SIG_free(p8);
119 0 : goto err;
120 : }
121 0 : p8inf = PKCS8_decrypt(p8, psbuf, klen);
122 0 : X509_SIG_free(p8);
123 0 : if (!p8inf)
124 : goto p8err;
125 0 : ret = EVP_PKCS82PKEY(p8inf);
126 0 : if (x) {
127 0 : if (*x)
128 0 : EVP_PKEY_free((EVP_PKEY *)*x);
129 0 : *x = ret;
130 : }
131 0 : PKCS8_PRIV_KEY_INFO_free(p8inf);
132 438 : } else if ((slen = pem_check_suffix(nm, "PRIVATE KEY")) > 0) {
133 : const EVP_PKEY_ASN1_METHOD *ameth;
134 438 : ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen);
135 438 : if (!ameth || !ameth->old_priv_decode)
136 : goto p8err;
137 438 : ret = d2i_PrivateKey(ameth->pkey_id, x, &p, len);
138 : }
139 : p8err:
140 450 : if (ret == NULL)
141 0 : PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY, ERR_R_ASN1_LIB);
142 : err:
143 450 : OPENSSL_free(nm);
144 450 : OPENSSL_cleanse(data, len);
145 450 : OPENSSL_free(data);
146 450 : return (ret);
147 : }
148 :
149 0 : int PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
150 : unsigned char *kstr, int klen,
151 : pem_password_cb *cb, void *u)
152 : {
153 : char pem_str[80];
154 0 : if (!x->ameth || x->ameth->priv_encode)
155 0 : return PEM_write_bio_PKCS8PrivateKey(bp, x, enc,
156 : (char *)kstr, klen, cb, u);
157 :
158 0 : BIO_snprintf(pem_str, 80, "%s PRIVATE KEY", x->ameth->pem_str);
159 0 : return PEM_ASN1_write_bio((i2d_of_void *)i2d_PrivateKey,
160 : pem_str, bp, x, enc, kstr, klen, cb, u);
161 : }
162 :
163 0 : EVP_PKEY *PEM_read_bio_Parameters(BIO *bp, EVP_PKEY **x)
164 : {
165 0 : char *nm = NULL;
166 0 : const unsigned char *p = NULL;
167 0 : unsigned char *data = NULL;
168 : long len;
169 : int slen;
170 : EVP_PKEY *ret = NULL;
171 :
172 0 : if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_PARAMETERS,
173 : bp, 0, NULL))
174 : return NULL;
175 0 : p = data;
176 :
177 0 : if ((slen = pem_check_suffix(nm, "PARAMETERS")) > 0) {
178 0 : ret = EVP_PKEY_new();
179 0 : if (!ret)
180 : goto err;
181 0 : if (!EVP_PKEY_set_type_str(ret, nm, slen)
182 0 : || !ret->ameth->param_decode
183 0 : || !ret->ameth->param_decode(ret, &p, len)) {
184 0 : EVP_PKEY_free(ret);
185 : ret = NULL;
186 0 : goto err;
187 : }
188 0 : if (x) {
189 0 : if (*x)
190 0 : EVP_PKEY_free((EVP_PKEY *)*x);
191 0 : *x = ret;
192 : }
193 : }
194 : err:
195 0 : if (ret == NULL)
196 0 : PEMerr(PEM_F_PEM_READ_BIO_PARAMETERS, ERR_R_ASN1_LIB);
197 0 : OPENSSL_free(nm);
198 0 : OPENSSL_free(data);
199 0 : return (ret);
200 : }
201 :
202 0 : int PEM_write_bio_Parameters(BIO *bp, EVP_PKEY *x)
203 : {
204 : char pem_str[80];
205 0 : if (!x->ameth || !x->ameth->param_encode)
206 : return 0;
207 :
208 0 : BIO_snprintf(pem_str, 80, "%s PARAMETERS", x->ameth->pem_str);
209 0 : return PEM_ASN1_write_bio((i2d_of_void *)x->ameth->param_encode,
210 : pem_str, bp, x, NULL, NULL, 0, 0, NULL);
211 : }
212 :
213 : #ifndef OPENSSL_NO_FP_API
214 0 : EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb,
215 : void *u)
216 : {
217 : BIO *b;
218 : EVP_PKEY *ret;
219 :
220 0 : if ((b = BIO_new(BIO_s_file())) == NULL) {
221 0 : PEMerr(PEM_F_PEM_READ_PRIVATEKEY, ERR_R_BUF_LIB);
222 0 : return (0);
223 : }
224 0 : BIO_set_fp(b, fp, BIO_NOCLOSE);
225 0 : ret = PEM_read_bio_PrivateKey(b, x, cb, u);
226 0 : BIO_free(b);
227 0 : return (ret);
228 : }
229 :
230 0 : int PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
231 : unsigned char *kstr, int klen,
232 : pem_password_cb *cb, void *u)
233 : {
234 : BIO *b;
235 : int ret;
236 :
237 0 : if ((b = BIO_new_fp(fp, BIO_NOCLOSE)) == NULL) {
238 0 : PEMerr(PEM_F_PEM_WRITE_PRIVATEKEY, ERR_R_BUF_LIB);
239 0 : return 0;
240 : }
241 0 : ret = PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u);
242 0 : BIO_free(b);
243 0 : return ret;
244 : }
245 :
246 : #endif
247 :
248 : #ifndef OPENSSL_NO_DH
249 :
250 : /* Transparently read in PKCS#3 or X9.42 DH parameters */
251 :
252 0 : DH *PEM_read_bio_DHparams(BIO *bp, DH **x, pem_password_cb *cb, void *u)
253 : {
254 0 : char *nm = NULL;
255 0 : const unsigned char *p = NULL;
256 0 : unsigned char *data = NULL;
257 : long len;
258 : DH *ret = NULL;
259 :
260 0 : if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_DHPARAMS, bp, cb, u))
261 : return NULL;
262 0 : p = data;
263 :
264 0 : if (!strcmp(nm, PEM_STRING_DHXPARAMS))
265 0 : ret = d2i_DHxparams(x, &p, len);
266 : else
267 0 : ret = d2i_DHparams(x, &p, len);
268 :
269 0 : if (ret == NULL)
270 0 : PEMerr(PEM_F_PEM_READ_BIO_DHPARAMS, ERR_R_ASN1_LIB);
271 0 : OPENSSL_free(nm);
272 0 : OPENSSL_free(data);
273 0 : return ret;
274 : }
275 :
276 : # ifndef OPENSSL_NO_FP_API
277 0 : DH *PEM_read_DHparams(FILE *fp, DH **x, pem_password_cb *cb, void *u)
278 : {
279 : BIO *b;
280 : DH *ret;
281 :
282 0 : if ((b = BIO_new(BIO_s_file())) == NULL) {
283 0 : PEMerr(PEM_F_PEM_READ_DHPARAMS, ERR_R_BUF_LIB);
284 0 : return (0);
285 : }
286 0 : BIO_set_fp(b, fp, BIO_NOCLOSE);
287 0 : ret = PEM_read_bio_DHparams(b, x, cb, u);
288 0 : BIO_free(b);
289 0 : return (ret);
290 : }
291 : # endif
292 :
293 : #endif
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