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1241126a DSH |
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> | |
01b8b3c7 DSH |
68 | #ifndef OPENSSL_NO_ENGINE |
69 | #include <openssl/engine.h> | |
70 | #endif | |
2ca873e8 DSH |
71 | #ifndef OPENSSL_NO_DH |
72 | #include <openssl/dh.h> | |
73 | #endif | |
e4263314 | 74 | #include "asn1_locl.h" |
1241126a | 75 | |
e4263314 | 76 | int pem_check_suffix(const char *pem_str, const char *suffix); |
1241126a DSH |
77 | |
78 | EVP_PKEY *PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u) | |
79 | { | |
80 | char *nm=NULL; | |
875a644a RL |
81 | const unsigned char *p=NULL; |
82 | unsigned char *data=NULL; | |
1241126a | 83 | long len; |
e4263314 | 84 | int slen; |
1241126a DSH |
85 | EVP_PKEY *ret=NULL; |
86 | ||
87 | if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp, cb, u)) | |
88 | return NULL; | |
89 | p = data; | |
90 | ||
76240b3a | 91 | if (strcmp(nm,PEM_STRING_PKCS8INF) == 0) { |
1241126a DSH |
92 | PKCS8_PRIV_KEY_INFO *p8inf; |
93 | p8inf=d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len); | |
9f353dd6 | 94 | if(!p8inf) goto p8err; |
1241126a | 95 | ret = EVP_PKCS82PKEY(p8inf); |
f727266a RL |
96 | if(x) { |
97 | if(*x) EVP_PKEY_free((EVP_PKEY *)*x); | |
98 | *x = ret; | |
99 | } | |
1241126a DSH |
100 | PKCS8_PRIV_KEY_INFO_free(p8inf); |
101 | } else if (strcmp(nm,PEM_STRING_PKCS8) == 0) { | |
102 | PKCS8_PRIV_KEY_INFO *p8inf; | |
103 | X509_SIG *p8; | |
104 | int klen; | |
105 | char psbuf[PEM_BUFSIZE]; | |
106 | p8 = d2i_X509_SIG(NULL, &p, len); | |
107 | if(!p8) goto p8err; | |
108 | if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u); | |
109 | else klen=PEM_def_callback(psbuf,PEM_BUFSIZE,0,u); | |
110 | if (klen <= 0) { | |
8afca8d9 | 111 | PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY, |
1241126a | 112 | PEM_R_BAD_PASSWORD_READ); |
d735c649 | 113 | X509_SIG_free(p8); |
1241126a DSH |
114 | goto err; |
115 | } | |
116 | p8inf = PKCS8_decrypt(p8, psbuf, klen); | |
117 | X509_SIG_free(p8); | |
118 | if(!p8inf) goto p8err; | |
119 | ret = EVP_PKCS82PKEY(p8inf); | |
120 | if(x) { | |
121 | if(*x) EVP_PKEY_free((EVP_PKEY *)*x); | |
122 | *x = ret; | |
123 | } | |
124 | PKCS8_PRIV_KEY_INFO_free(p8inf); | |
76240b3a DSH |
125 | } else if ((slen = pem_check_suffix(nm, "PRIVATE KEY")) > 0) |
126 | { | |
127 | const EVP_PKEY_ASN1_METHOD *ameth; | |
01b8b3c7 | 128 | ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen); |
76240b3a DSH |
129 | if (!ameth || !ameth->old_priv_decode) |
130 | goto p8err; | |
131 | ret=d2i_PrivateKey(ameth->pkey_id,x,&p,len); | |
132 | } | |
1241126a DSH |
133 | p8err: |
134 | if (ret == NULL) | |
8afca8d9 | 135 | PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY,ERR_R_ASN1_LIB); |
1241126a DSH |
136 | err: |
137 | OPENSSL_free(nm); | |
a2e623c0 | 138 | OPENSSL_cleanse(data, len); |
1241126a DSH |
139 | OPENSSL_free(data); |
140 | return(ret); | |
141 | } | |
142 | ||
e4263314 DSH |
143 | int PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc, |
144 | unsigned char *kstr, int klen, | |
145 | pem_password_cb *cb, void *u) | |
146 | { | |
147 | char pem_str[80]; | |
8125d9f9 | 148 | if (!x->ameth || x->ameth->priv_encode) |
e4263314 DSH |
149 | return PEM_write_bio_PKCS8PrivateKey(bp, x, enc, |
150 | (char *)kstr, klen, | |
151 | cb, u); | |
152 | ||
153 | BIO_snprintf(pem_str, 80, "%s PRIVATE KEY", x->ameth->pem_str); | |
297e6f19 DSH |
154 | return PEM_ASN1_write_bio((i2d_of_void *)i2d_PrivateKey, |
155 | pem_str,bp,x,enc,kstr,klen,cb,u); | |
e4263314 DSH |
156 | } |
157 | ||
3e4585c8 | 158 | EVP_PKEY *PEM_read_bio_Parameters(BIO *bp, EVP_PKEY **x) |
db98bbc1 DSH |
159 | { |
160 | char *nm=NULL; | |
161 | const unsigned char *p=NULL; | |
162 | unsigned char *data=NULL; | |
163 | long len; | |
164 | int slen; | |
165 | EVP_PKEY *ret=NULL; | |
166 | ||
167 | if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_PARAMETERS, | |
3e4585c8 | 168 | bp, 0, NULL)) |
db98bbc1 DSH |
169 | return NULL; |
170 | p = data; | |
171 | ||
172 | if ((slen = pem_check_suffix(nm, "PARAMETERS")) > 0) | |
173 | { | |
db98bbc1 DSH |
174 | ret = EVP_PKEY_new(); |
175 | if (!ret) | |
176 | goto err; | |
01b8b3c7 DSH |
177 | if (!EVP_PKEY_set_type_str(ret, nm, slen) |
178 | || !ret->ameth->param_decode | |
179 | || !ret->ameth->param_decode(ret, &p, len)) | |
db98bbc1 DSH |
180 | { |
181 | EVP_PKEY_free(ret); | |
182 | ret = NULL; | |
183 | goto err; | |
184 | } | |
185 | if(x) | |
186 | { | |
187 | if(*x) EVP_PKEY_free((EVP_PKEY *)*x); | |
188 | *x = ret; | |
189 | } | |
190 | } | |
191 | err: | |
192 | if (ret == NULL) | |
193 | PEMerr(PEM_F_PEM_READ_BIO_PARAMETERS,ERR_R_ASN1_LIB); | |
194 | OPENSSL_free(nm); | |
195 | OPENSSL_free(data); | |
196 | return(ret); | |
197 | } | |
198 | ||
3e4585c8 | 199 | int PEM_write_bio_Parameters(BIO *bp, EVP_PKEY *x) |
db98bbc1 DSH |
200 | { |
201 | char pem_str[80]; | |
202 | if (!x->ameth || !x->ameth->param_encode) | |
203 | return 0; | |
204 | ||
205 | BIO_snprintf(pem_str, 80, "%s PARAMETERS", x->ameth->pem_str); | |
206 | return PEM_ASN1_write_bio( | |
297e6f19 DSH |
207 | (i2d_of_void *)x->ameth->param_encode, |
208 | pem_str,bp,x,NULL,NULL,0,0,NULL); | |
db98bbc1 | 209 | } |
e4263314 | 210 | |
4b618848 | 211 | #ifndef OPENSSL_NO_STDIO |
1241126a DSH |
212 | EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u) |
213 | { | |
214 | BIO *b; | |
215 | EVP_PKEY *ret; | |
216 | ||
217 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
218 | { | |
8afca8d9 | 219 | PEMerr(PEM_F_PEM_READ_PRIVATEKEY,ERR_R_BUF_LIB); |
1241126a DSH |
220 | return(0); |
221 | } | |
222 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
223 | ret=PEM_read_bio_PrivateKey(b,x,cb,u); | |
224 | BIO_free(b); | |
225 | return(ret); | |
226 | } | |
e4263314 DSH |
227 | |
228 | int PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc, | |
229 | unsigned char *kstr, int klen, | |
230 | pem_password_cb *cb, void *u) | |
231 | { | |
232 | BIO *b; | |
233 | int ret; | |
234 | ||
235 | if ((b=BIO_new_fp(fp, BIO_NOCLOSE)) == NULL) | |
236 | { | |
237 | PEMerr(PEM_F_PEM_WRITE_PRIVATEKEY,ERR_R_BUF_LIB); | |
238 | return 0; | |
239 | } | |
240 | ret=PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u); | |
241 | BIO_free(b); | |
242 | return ret; | |
243 | } | |
244 | ||
1241126a | 245 | #endif |
2ca873e8 DSH |
246 | |
247 | #ifndef OPENSSL_NO_DH | |
248 | ||
249 | /* Transparently read in PKCS#3 or X9.42 DH parameters */ | |
250 | ||
251 | DH *PEM_read_bio_DHparams(BIO *bp, DH **x, pem_password_cb *cb, void *u) | |
252 | { | |
253 | char *nm=NULL; | |
254 | const unsigned char *p=NULL; | |
255 | unsigned char *data=NULL; | |
256 | long len; | |
257 | DH *ret=NULL; | |
258 | ||
259 | if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_DHPARAMS, | |
260 | bp, cb, u)) | |
261 | return NULL; | |
262 | p = data; | |
263 | ||
264 | if (!strcmp(nm, PEM_STRING_DHXPARAMS)) | |
265 | ret = d2i_DHxparams(x, &p, len); | |
266 | else | |
267 | ret = d2i_DHparams(x, &p, len); | |
268 | ||
269 | if (ret == NULL) | |
270 | PEMerr(PEM_F_PEM_READ_BIO_DHPARAMS,ERR_R_ASN1_LIB); | |
271 | OPENSSL_free(nm); | |
272 | OPENSSL_free(data); | |
273 | return ret; | |
274 | } | |
275 | ||
4b618848 | 276 | #ifndef OPENSSL_NO_STDIO |
2ca873e8 DSH |
277 | DH *PEM_read_DHparams(FILE *fp, DH **x, pem_password_cb *cb, void *u) |
278 | { | |
279 | BIO *b; | |
280 | DH *ret; | |
281 | ||
282 | if ((b=BIO_new(BIO_s_file())) == NULL) | |
283 | { | |
284 | PEMerr(PEM_F_PEM_READ_DHPARAMS,ERR_R_BUF_LIB); | |
285 | return(0); | |
286 | } | |
287 | BIO_set_fp(b,fp,BIO_NOCLOSE); | |
288 | ret=PEM_read_bio_DHparams(b,x,cb,u); | |
289 | BIO_free(b); | |
290 | return(ret); | |
291 | } | |
292 | #endif | |
293 | ||
294 | #endif |