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
PEM_read_bio_PrivateKey(BIO * bp,EVP_PKEY ** x,pem_password_cb * cb,void * u)72 EVP_PKEY *PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb,
73 void *u)
74 {
75 char *nm = NULL;
76 const unsigned char *p = NULL;
77 unsigned char *data = NULL;
78 long len;
79 EVP_PKEY *ret = NULL;
80
81 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp, cb, u))
82 return NULL;
83 p = data;
84
85 if (strcmp(nm, PEM_STRING_PKCS8INF) == 0) {
86 PKCS8_PRIV_KEY_INFO *p8inf;
87 p8inf = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
88 if (!p8inf)
89 goto p8err;
90 ret = EVP_PKCS82PKEY(p8inf);
91 if (x) {
92 if (*x)
93 EVP_PKEY_free((EVP_PKEY *)*x);
94 *x = ret;
95 }
96 PKCS8_PRIV_KEY_INFO_free(p8inf);
97 } else if (strcmp(nm, PEM_STRING_PKCS8) == 0) {
98 PKCS8_PRIV_KEY_INFO *p8inf;
99 X509_SIG *p8;
100 int klen;
101 char psbuf[PEM_BUFSIZE];
102 p8 = d2i_X509_SIG(NULL, &p, len);
103 if (!p8)
104 goto p8err;
105
106 klen = 0;
107 if (!cb)
108 cb = PEM_def_callback;
109 klen = cb(psbuf, PEM_BUFSIZE, 0, u);
110 if (klen <= 0) {
111 OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_PASSWORD_READ);
112 X509_SIG_free(p8);
113 goto err;
114 }
115 p8inf = PKCS8_decrypt(p8, psbuf, klen);
116 X509_SIG_free(p8);
117 if (!p8inf)
118 goto p8err;
119 ret = EVP_PKCS82PKEY(p8inf);
120 if (x) {
121 if (*x)
122 EVP_PKEY_free((EVP_PKEY *)*x);
123 *x = ret;
124 }
125 PKCS8_PRIV_KEY_INFO_free(p8inf);
126 } else if (strcmp(nm, PEM_STRING_RSA) == 0) {
127 /* TODO(davidben): d2i_PrivateKey parses PKCS#8 along with the
128 * standalone format. This and the cases below probably should not
129 * accept PKCS#8. */
130 ret = d2i_PrivateKey(EVP_PKEY_RSA, x, &p, len);
131 } else if (strcmp(nm, PEM_STRING_EC) == 0) {
132 ret = d2i_PrivateKey(EVP_PKEY_EC, x, &p, len);
133 } else if (strcmp(nm, PEM_STRING_DSA) == 0) {
134 ret = d2i_PrivateKey(EVP_PKEY_DSA, x, &p, len);
135 }
136 p8err:
137 if (ret == NULL)
138 OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
139
140 err:
141 OPENSSL_free(nm);
142 OPENSSL_cleanse(data, len);
143 OPENSSL_free(data);
144 return (ret);
145 }
146
PEM_write_bio_PrivateKey(BIO * bp,EVP_PKEY * x,const EVP_CIPHER * enc,unsigned char * kstr,int klen,pem_password_cb * cb,void * u)147 int PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
148 unsigned char *kstr, int klen,
149 pem_password_cb *cb, void *u)
150 {
151 return PEM_write_bio_PKCS8PrivateKey(bp, x, enc, (char *)kstr, klen, cb, u);
152 }
153
154 #ifndef OPENSSL_NO_FP_API
PEM_read_PrivateKey(FILE * fp,EVP_PKEY ** x,pem_password_cb * cb,void * u)155 EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb,
156 void *u)
157 {
158 BIO *b;
159 EVP_PKEY *ret;
160
161 if ((b = BIO_new(BIO_s_file())) == NULL) {
162 OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
163 return (0);
164 }
165 BIO_set_fp(b, fp, BIO_NOCLOSE);
166 ret = PEM_read_bio_PrivateKey(b, x, cb, u);
167 BIO_free(b);
168 return (ret);
169 }
170
PEM_write_PrivateKey(FILE * fp,EVP_PKEY * x,const EVP_CIPHER * enc,unsigned char * kstr,int klen,pem_password_cb * cb,void * u)171 int PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
172 unsigned char *kstr, int klen,
173 pem_password_cb *cb, void *u)
174 {
175 BIO *b;
176 int ret;
177
178 if ((b = BIO_new_fp(fp, BIO_NOCLOSE)) == NULL) {
179 OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
180 return 0;
181 }
182 ret = PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u);
183 BIO_free(b);
184 return ret;
185 }
186
187 #endif
188
189 /* Transparently read in PKCS#3 or X9.42 DH parameters */
190
PEM_read_bio_DHparams(BIO * bp,DH ** x,pem_password_cb * cb,void * u)191 DH *PEM_read_bio_DHparams(BIO *bp, DH **x, pem_password_cb *cb, void *u)
192 {
193 char *nm = NULL;
194 const unsigned char *p = NULL;
195 unsigned char *data = NULL;
196 long len;
197 DH *ret = NULL;
198
199 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_DHPARAMS, bp, cb, u))
200 return NULL;
201 p = data;
202
203 ret = d2i_DHparams(x, &p, len);
204
205 if (ret == NULL)
206 OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
207 OPENSSL_free(nm);
208 OPENSSL_free(data);
209 return ret;
210 }
211
212 #ifndef OPENSSL_NO_FP_API
PEM_read_DHparams(FILE * fp,DH ** x,pem_password_cb * cb,void * u)213 DH *PEM_read_DHparams(FILE *fp, DH **x, pem_password_cb *cb, void *u)
214 {
215 BIO *b;
216 DH *ret;
217
218 if ((b = BIO_new(BIO_s_file())) == NULL) {
219 OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
220 return (0);
221 }
222 BIO_set_fp(b, fp, BIO_NOCLOSE);
223 ret = PEM_read_bio_DHparams(b, x, cb, u);
224 BIO_free(b);
225 return (ret);
226 }
227 #endif
228