1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
7 *
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
56
57 #include <openssl/pem.h>
58
59 #include <stdio.h>
60 #include <string.h>
61
62 #include <openssl/buf.h>
63 #include <openssl/dh.h>
64 #include <openssl/err.h>
65 #include <openssl/evp.h>
66 #include <openssl/mem.h>
67 #include <openssl/obj.h>
68 #include <openssl/pkcs8.h>
69 #include <openssl/rand.h>
70 #include <openssl/x509.h>
71
72 #include "../evp/internal.h"
73
74
75 int pem_check_suffix(const char *pem_str, const char *suffix);
76
PEM_read_bio_PrivateKey(BIO * bp,EVP_PKEY ** x,pem_password_cb * cb,void * u)77 EVP_PKEY *PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u)
78 {
79 char *nm=NULL;
80 const unsigned char *p=NULL;
81 unsigned char *data=NULL;
82 long len;
83 int slen;
84 EVP_PKEY *ret=NULL;
85
86 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp, cb, u))
87 return NULL;
88 p = data;
89
90 if (strcmp(nm,PEM_STRING_PKCS8INF) == 0) {
91 PKCS8_PRIV_KEY_INFO *p8inf;
92 p8inf=d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
93 if(!p8inf) goto p8err;
94 ret = EVP_PKCS82PKEY(p8inf);
95 if(x) {
96 if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
97 *x = ret;
98 }
99 PKCS8_PRIV_KEY_INFO_free(p8inf);
100 } else if (strcmp(nm,PEM_STRING_PKCS8) == 0) {
101 PKCS8_PRIV_KEY_INFO *p8inf;
102 X509_SIG *p8;
103 int klen;
104 char psbuf[PEM_BUFSIZE];
105 p8 = d2i_X509_SIG(NULL, &p, len);
106 if(!p8) goto p8err;
107
108 klen = 0;
109 if (!cb) cb = PEM_def_callback;
110 klen=cb(psbuf,PEM_BUFSIZE,0,u);
111 if (klen <= 0) {
112 OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_PASSWORD_READ);
113 X509_SIG_free(p8);
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);
125 } else if ((slen = pem_check_suffix(nm, "PRIVATE KEY")) > 0)
126 {
127 const EVP_PKEY_ASN1_METHOD *ameth;
128 ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen);
129 if (!ameth || !ameth->old_priv_decode)
130 goto p8err;
131 ret=d2i_PrivateKey(ameth->pkey_id,x,&p,len);
132 }
133 p8err:
134 if (ret == NULL)
135 OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
136
137 err:
138 OPENSSL_free(nm);
139 OPENSSL_cleanse(data, len);
140 OPENSSL_free(data);
141 return(ret);
142 }
143
PEM_write_bio_PrivateKey(BIO * bp,EVP_PKEY * x,const EVP_CIPHER * enc,unsigned char * kstr,int klen,pem_password_cb * cb,void * u)144 int PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
145 unsigned char *kstr, int klen,
146 pem_password_cb *cb, void *u)
147 {
148 char pem_str[80];
149 if (!x->ameth || x->ameth->priv_encode)
150 return PEM_write_bio_PKCS8PrivateKey(bp, x, enc,
151 (char *)kstr, klen,
152 cb, u);
153
154 BIO_snprintf(pem_str, 80, "%s PRIVATE KEY", x->ameth->pem_str);
155 return PEM_ASN1_write_bio((i2d_of_void *)i2d_PrivateKey,
156 pem_str,bp,x,enc,kstr,klen,cb,u);
157 }
158
public_key_type_from_str(const char * name,size_t len)159 static int public_key_type_from_str(const char *name, size_t len) {
160 if (len == 3 && memcmp(name, "RSA", 3) == 0) {
161 return EVP_PKEY_RSA;
162 } else if (len == 2 && memcmp(name, "DH", 2) == 0) {
163 return EVP_PKEY_DH;
164 } else if (len == 2 && memcmp(name, "EC", 2) == 0) {
165 return EVP_PKEY_EC;
166 }
167 return NID_undef;
168 }
169
set_pkey_type_from_str(EVP_PKEY * pkey,const char * name,size_t len)170 static int set_pkey_type_from_str(EVP_PKEY *pkey, const char *name, size_t len) {
171 int nid = public_key_type_from_str(name, len);
172 if (nid == NID_undef) {
173 return 0;
174 }
175 return EVP_PKEY_set_type(pkey, nid);
176 }
177
PEM_read_bio_Parameters(BIO * bp,EVP_PKEY ** x)178 EVP_PKEY *PEM_read_bio_Parameters(BIO *bp, EVP_PKEY **x)
179 {
180 char *nm=NULL;
181 const unsigned char *p=NULL;
182 unsigned char *data=NULL;
183 long len;
184 int slen;
185 EVP_PKEY *ret=NULL;
186
187 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_PARAMETERS,
188 bp, 0, NULL))
189 return NULL;
190 p = data;
191
192 if ((slen = pem_check_suffix(nm, "PARAMETERS")) > 0)
193 {
194 ret = EVP_PKEY_new();
195 if (!ret)
196 goto err;
197 if (!set_pkey_type_from_str(ret, nm, slen)
198 || !ret->ameth->param_decode
199 || !ret->ameth->param_decode(ret, &p, len))
200 {
201 EVP_PKEY_free(ret);
202 ret = NULL;
203 goto err;
204 }
205 if(x)
206 {
207 if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
208 *x = ret;
209 }
210 }
211 err:
212 if (ret == NULL)
213 OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
214 OPENSSL_free(nm);
215 OPENSSL_free(data);
216 return(ret);
217 }
218
PEM_write_bio_Parameters(BIO * bp,EVP_PKEY * x)219 int PEM_write_bio_Parameters(BIO *bp, EVP_PKEY *x)
220 {
221 char pem_str[80];
222 if (!x->ameth || !x->ameth->param_encode)
223 return 0;
224
225 BIO_snprintf(pem_str, 80, "%s PARAMETERS", x->ameth->pem_str);
226 return PEM_ASN1_write_bio(
227 (i2d_of_void *)x->ameth->param_encode,
228 pem_str,bp,x,NULL,NULL,0,0,NULL);
229 }
230
231 #ifndef OPENSSL_NO_FP_API
PEM_read_PrivateKey(FILE * fp,EVP_PKEY ** x,pem_password_cb * cb,void * u)232 EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u)
233 {
234 BIO *b;
235 EVP_PKEY *ret;
236
237 if ((b=BIO_new(BIO_s_file())) == NULL)
238 {
239 OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
240 return(0);
241 }
242 BIO_set_fp(b,fp,BIO_NOCLOSE);
243 ret=PEM_read_bio_PrivateKey(b,x,cb,u);
244 BIO_free(b);
245 return(ret);
246 }
247
PEM_write_PrivateKey(FILE * fp,EVP_PKEY * x,const EVP_CIPHER * enc,unsigned char * kstr,int klen,pem_password_cb * cb,void * u)248 int PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
249 unsigned char *kstr, int klen,
250 pem_password_cb *cb, void *u)
251 {
252 BIO *b;
253 int ret;
254
255 if ((b=BIO_new_fp(fp, BIO_NOCLOSE)) == NULL)
256 {
257 OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
258 return 0;
259 }
260 ret=PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u);
261 BIO_free(b);
262 return ret;
263 }
264
265 #endif
266
267
268 /* Transparently read in PKCS#3 or X9.42 DH parameters */
269
PEM_read_bio_DHparams(BIO * bp,DH ** x,pem_password_cb * cb,void * u)270 DH *PEM_read_bio_DHparams(BIO *bp, DH **x, pem_password_cb *cb, void *u)
271 {
272 char *nm=NULL;
273 const unsigned char *p=NULL;
274 unsigned char *data=NULL;
275 long len;
276 DH *ret=NULL;
277
278 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_DHPARAMS,
279 bp, cb, u))
280 return NULL;
281 p = data;
282
283 ret = d2i_DHparams(x, &p, len);
284
285 if (ret == NULL)
286 OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
287 OPENSSL_free(nm);
288 OPENSSL_free(data);
289 return ret;
290 }
291
292 #ifndef OPENSSL_NO_FP_API
PEM_read_DHparams(FILE * fp,DH ** x,pem_password_cb * cb,void * u)293 DH *PEM_read_DHparams(FILE *fp, DH **x, pem_password_cb *cb, void *u)
294 {
295 BIO *b;
296 DH *ret;
297
298 if ((b=BIO_new(BIO_s_file())) == NULL)
299 {
300 OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
301 return(0);
302 }
303 BIO_set_fp(b,fp,BIO_NOCLOSE);
304 ret=PEM_read_bio_DHparams(b,x,cb,u);
305 BIO_free(b);
306 return(ret);
307 }
308 #endif
309