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
61 #include <openssl/buf.h>
62 #include <openssl/dh.h>
63 #include <openssl/err.h>
64 #include <openssl/evp.h>
65 #include <openssl/mem.h>
66 #include <openssl/obj.h>
67 #include <openssl/pkcs8.h>
68 #include <openssl/rand.h>
69 #include <openssl/x509.h>
70
71 #include "../evp/internal.h"
72
73
74 int pem_check_suffix(const char *pem_str, const char *suffix);
75
PEM_read_bio_PrivateKey(BIO * bp,EVP_PKEY ** x,pem_password_cb * cb,void * u)76 EVP_PKEY *PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u)
77 {
78 char *nm=NULL;
79 const unsigned char *p=NULL;
80 unsigned char *data=NULL;
81 long len;
82 int slen;
83 EVP_PKEY *ret=NULL;
84
85 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp, cb, u))
86 return NULL;
87 p = data;
88
89 if (strcmp(nm,PEM_STRING_PKCS8INF) == 0) {
90 PKCS8_PRIV_KEY_INFO *p8inf;
91 p8inf=d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
92 if(!p8inf) goto p8err;
93 ret = EVP_PKCS82PKEY(p8inf);
94 if(x) {
95 if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
96 *x = ret;
97 }
98 PKCS8_PRIV_KEY_INFO_free(p8inf);
99 } else if (strcmp(nm,PEM_STRING_PKCS8) == 0) {
100 PKCS8_PRIV_KEY_INFO *p8inf;
101 X509_SIG *p8;
102 int klen;
103 char psbuf[PEM_BUFSIZE];
104 p8 = d2i_X509_SIG(NULL, &p, len);
105 if(!p8) goto p8err;
106
107 klen = 0;
108 if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u);
109 if (klen <= 0) {
110 OPENSSL_PUT_ERROR(PEM, PEM_read_bio_PrivateKey, PEM_R_BAD_PASSWORD_READ);
111 X509_SIG_free(p8);
112 goto err;
113 }
114 p8inf = PKCS8_decrypt(p8, psbuf, klen);
115 X509_SIG_free(p8);
116 if(!p8inf) goto p8err;
117 ret = EVP_PKCS82PKEY(p8inf);
118 if(x) {
119 if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
120 *x = ret;
121 }
122 PKCS8_PRIV_KEY_INFO_free(p8inf);
123 } else if ((slen = pem_check_suffix(nm, "PRIVATE KEY")) > 0)
124 {
125 const EVP_PKEY_ASN1_METHOD *ameth;
126 ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen);
127 if (!ameth || !ameth->old_priv_decode)
128 goto p8err;
129 ret=d2i_PrivateKey(ameth->pkey_id,x,&p,len);
130 }
131 p8err:
132 if (ret == NULL)
133 OPENSSL_PUT_ERROR(PEM, PEM_read_bio_PrivateKey, ERR_R_ASN1_LIB);
134
135 err:
136 OPENSSL_free(nm);
137 OPENSSL_cleanse(data, len);
138 OPENSSL_free(data);
139 return(ret);
140 }
141
PEM_write_bio_PrivateKey(BIO * bp,EVP_PKEY * x,const EVP_CIPHER * enc,unsigned char * kstr,int klen,pem_password_cb * cb,void * u)142 int PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
143 unsigned char *kstr, int klen,
144 pem_password_cb *cb, void *u)
145 {
146 char pem_str[80];
147 if (!x->ameth || x->ameth->priv_encode)
148 return PEM_write_bio_PKCS8PrivateKey(bp, x, enc,
149 (char *)kstr, klen,
150 cb, u);
151
152 BIO_snprintf(pem_str, 80, "%s PRIVATE KEY", x->ameth->pem_str);
153 return PEM_ASN1_write_bio((i2d_of_void *)i2d_PrivateKey,
154 pem_str,bp,x,enc,kstr,klen,cb,u);
155 }
156
public_key_type_from_str(const char * name,size_t len)157 static int public_key_type_from_str(const char *name, size_t len) {
158 if (len == 3 && memcmp(name, "RSA", 3) == 0) {
159 return EVP_PKEY_RSA;
160 } else if (len == 2 && memcmp(name, "DH", 2) == 0) {
161 return EVP_PKEY_DH;
162 } else if (len == 2 && memcmp(name, "EC", 2) == 0) {
163 return EVP_PKEY_EC;
164 }
165 return NID_undef;
166 }
167
set_pkey_type_from_str(EVP_PKEY * pkey,const char * name,size_t len)168 static int set_pkey_type_from_str(EVP_PKEY *pkey, const char *name, size_t len) {
169 int nid = public_key_type_from_str(name, len);
170 if (nid == NID_undef) {
171 return 0;
172 }
173 return EVP_PKEY_set_type(pkey, nid);
174 }
175
PEM_read_bio_Parameters(BIO * bp,EVP_PKEY ** x)176 EVP_PKEY *PEM_read_bio_Parameters(BIO *bp, EVP_PKEY **x)
177 {
178 char *nm=NULL;
179 const unsigned char *p=NULL;
180 unsigned char *data=NULL;
181 long len;
182 int slen;
183 EVP_PKEY *ret=NULL;
184
185 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_PARAMETERS,
186 bp, 0, NULL))
187 return NULL;
188 p = data;
189
190 if ((slen = pem_check_suffix(nm, "PARAMETERS")) > 0)
191 {
192 ret = EVP_PKEY_new();
193 if (!ret)
194 goto err;
195 if (!set_pkey_type_from_str(ret, nm, slen)
196 || !ret->ameth->param_decode
197 || !ret->ameth->param_decode(ret, &p, len))
198 {
199 EVP_PKEY_free(ret);
200 ret = NULL;
201 goto err;
202 }
203 if(x)
204 {
205 if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
206 *x = ret;
207 }
208 }
209 err:
210 if (ret == NULL)
211 OPENSSL_PUT_ERROR(PEM, PEM_read_bio_Parameters, ERR_R_ASN1_LIB);
212 OPENSSL_free(nm);
213 OPENSSL_free(data);
214 return(ret);
215 }
216
PEM_write_bio_Parameters(BIO * bp,EVP_PKEY * x)217 int PEM_write_bio_Parameters(BIO *bp, EVP_PKEY *x)
218 {
219 char pem_str[80];
220 if (!x->ameth || !x->ameth->param_encode)
221 return 0;
222
223 BIO_snprintf(pem_str, 80, "%s PARAMETERS", x->ameth->pem_str);
224 return PEM_ASN1_write_bio(
225 (i2d_of_void *)x->ameth->param_encode,
226 pem_str,bp,x,NULL,NULL,0,0,NULL);
227 }
228
229 #ifndef OPENSSL_NO_FP_API
PEM_read_PrivateKey(FILE * fp,EVP_PKEY ** x,pem_password_cb * cb,void * u)230 EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u)
231 {
232 BIO *b;
233 EVP_PKEY *ret;
234
235 if ((b=BIO_new(BIO_s_file())) == NULL)
236 {
237 OPENSSL_PUT_ERROR(PEM, PEM_read_PrivateKey, ERR_R_BUF_LIB);
238 return(0);
239 }
240 BIO_set_fp(b,fp,BIO_NOCLOSE);
241 ret=PEM_read_bio_PrivateKey(b,x,cb,u);
242 BIO_free(b);
243 return(ret);
244 }
245
PEM_write_PrivateKey(FILE * fp,EVP_PKEY * x,const EVP_CIPHER * enc,unsigned char * kstr,int klen,pem_password_cb * cb,void * u)246 int PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
247 unsigned char *kstr, int klen,
248 pem_password_cb *cb, void *u)
249 {
250 BIO *b;
251 int ret;
252
253 if ((b=BIO_new_fp(fp, BIO_NOCLOSE)) == NULL)
254 {
255 OPENSSL_PUT_ERROR(PEM, PEM_write_PrivateKey, ERR_R_BUF_LIB);
256 return 0;
257 }
258 ret=PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u);
259 BIO_free(b);
260 return ret;
261 }
262
263 #endif
264
265
266 /* Transparently read in PKCS#3 or X9.42 DH parameters */
267
PEM_read_bio_DHparams(BIO * bp,DH ** x,pem_password_cb * cb,void * u)268 DH *PEM_read_bio_DHparams(BIO *bp, DH **x, pem_password_cb *cb, void *u)
269 {
270 char *nm=NULL;
271 const unsigned char *p=NULL;
272 unsigned char *data=NULL;
273 long len;
274 DH *ret=NULL;
275
276 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_DHPARAMS,
277 bp, cb, u))
278 return NULL;
279 p = data;
280
281 /* TODO(fork): remove? */
282 /*if (!strcmp(nm, PEM_STRING_DHXPARAMS))
283 ret = d2i_DHxparams(x, &p, len);
284 else */
285 ret = d2i_DHparams(x, &p, len);
286
287 if (ret == NULL)
288 OPENSSL_PUT_ERROR(PEM, PEM_read_bio_DHparams, ERR_R_ASN1_LIB);
289 OPENSSL_free(nm);
290 OPENSSL_free(data);
291 return ret;
292 }
293
294 #ifndef OPENSSL_NO_FP_API
PEM_read_DHparams(FILE * fp,DH ** x,pem_password_cb * cb,void * u)295 DH *PEM_read_DHparams(FILE *fp, DH **x, pem_password_cb *cb, void *u)
296 {
297 BIO *b;
298 DH *ret;
299
300 if ((b=BIO_new(BIO_s_file())) == NULL)
301 {
302 OPENSSL_PUT_ERROR(PEM, PEM_read_DHparams, ERR_R_BUF_LIB);
303 return(0);
304 }
305 BIO_set_fp(b,fp,BIO_NOCLOSE);
306 ret=PEM_read_bio_DHparams(b,x,cb,u);
307 BIO_free(b);
308 return(ret);
309 }
310 #endif
311
312