1 /* Copyright (C) 1995-1998 Eric Young ([email protected])
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young ([email protected]).
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 ([email protected]).
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 ([email protected])"
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 ([email protected])"
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/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
PEM_read_bio_PrivateKey(BIO * bp,EVP_PKEY ** x,pem_password_cb * cb,void * u)71 EVP_PKEY *PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb,
72 void *u) {
73 char *nm = NULL;
74 const unsigned char *p = NULL;
75 unsigned char *data = NULL;
76 long len;
77 EVP_PKEY *ret = NULL;
78
79 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp, cb, u)) {
80 return NULL;
81 }
82 p = data;
83
84 if (strcmp(nm, PEM_STRING_PKCS8INF) == 0) {
85 PKCS8_PRIV_KEY_INFO *p8inf;
86 p8inf = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
87 if (!p8inf) {
88 goto p8err;
89 }
90 ret = EVP_PKCS82PKEY(p8inf);
91 if (x) {
92 if (*x) {
93 EVP_PKEY_free((EVP_PKEY *)*x);
94 }
95 *x = ret;
96 }
97 PKCS8_PRIV_KEY_INFO_free(p8inf);
98 } else if (strcmp(nm, PEM_STRING_PKCS8) == 0) {
99 PKCS8_PRIV_KEY_INFO *p8inf;
100 X509_SIG *p8;
101 int pass_len;
102 char psbuf[PEM_BUFSIZE];
103 p8 = d2i_X509_SIG(NULL, &p, len);
104 if (!p8) {
105 goto p8err;
106 }
107
108 pass_len = 0;
109 if (!cb) {
110 cb = PEM_def_callback;
111 }
112 pass_len = cb(psbuf, PEM_BUFSIZE, 0, u);
113 if (pass_len <= 0) {
114 OPENSSL_PUT_ERROR(PEM, PEM_R_BAD_PASSWORD_READ);
115 X509_SIG_free(p8);
116 goto err;
117 }
118 p8inf = PKCS8_decrypt(p8, psbuf, pass_len);
119 X509_SIG_free(p8);
120 OPENSSL_cleanse(psbuf, pass_len);
121 if (!p8inf) {
122 goto p8err;
123 }
124 ret = EVP_PKCS82PKEY(p8inf);
125 if (x) {
126 if (*x) {
127 EVP_PKEY_free((EVP_PKEY *)*x);
128 }
129 *x = ret;
130 }
131 PKCS8_PRIV_KEY_INFO_free(p8inf);
132 } else if (strcmp(nm, PEM_STRING_RSA) == 0) {
133 // TODO(davidben): d2i_PrivateKey parses PKCS#8 along with the
134 // standalone format. This and the cases below probably should not
135 // accept PKCS#8.
136 ret = d2i_PrivateKey(EVP_PKEY_RSA, x, &p, len);
137 } else if (strcmp(nm, PEM_STRING_EC) == 0) {
138 ret = d2i_PrivateKey(EVP_PKEY_EC, x, &p, len);
139 } else if (strcmp(nm, PEM_STRING_DSA) == 0) {
140 ret = d2i_PrivateKey(EVP_PKEY_DSA, x, &p, len);
141 }
142 p8err:
143 if (ret == NULL) {
144 OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB);
145 }
146
147 err:
148 OPENSSL_free(nm);
149 OPENSSL_free(data);
150 return ret;
151 }
152
PEM_write_bio_PrivateKey(BIO * bp,EVP_PKEY * x,const EVP_CIPHER * enc,const unsigned char * pass,int pass_len,pem_password_cb * cb,void * u)153 int PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
154 const unsigned char *pass, int pass_len,
155 pem_password_cb *cb, void *u) {
156 return PEM_write_bio_PKCS8PrivateKey(bp, x, enc, (const char *)pass, pass_len,
157 cb, u);
158 }
159
PEM_read_PrivateKey(FILE * fp,EVP_PKEY ** x,pem_password_cb * cb,void * u)160 EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb,
161 void *u) {
162 BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
163 if (b == NULL) {
164 OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
165 return NULL;
166 }
167 EVP_PKEY *ret = PEM_read_bio_PrivateKey(b, x, cb, u);
168 BIO_free(b);
169 return ret;
170 }
171
PEM_write_PrivateKey(FILE * fp,EVP_PKEY * x,const EVP_CIPHER * enc,const unsigned char * pass,int pass_len,pem_password_cb * cb,void * u)172 int PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
173 const unsigned char *pass, int pass_len,
174 pem_password_cb *cb, void *u) {
175 BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
176 if (b == NULL) {
177 OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB);
178 return 0;
179 }
180 int ret = PEM_write_bio_PrivateKey(b, x, enc, pass, pass_len, cb, u);
181 BIO_free(b);
182 return ret;
183 }
184