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>
68
69 static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder,
70 int nid, const EVP_CIPHER *enc,
71 char *kstr, int klen, pem_password_cb *cb, void *u);
72 static int do_pk8pkey_fp(FILE *bp, EVP_PKEY *x, int isder,
73 int nid, const EVP_CIPHER *enc,
74 char *kstr, int klen, pem_password_cb *cb, void *u);
75
76 /*
77 * These functions write a private key in PKCS#8 format: it is a "drop in"
78 * replacement for PEM_write_bio_PrivateKey() and friends. As usual if 'enc'
79 * is NULL then it uses the unencrypted private key form. The 'nid' versions
80 * uses PKCS#5 v1.5 PBE algorithms whereas the others use PKCS#5 v2.0.
81 */
82
PEM_write_bio_PKCS8PrivateKey_nid(BIO * bp,EVP_PKEY * x,int nid,char * kstr,int klen,pem_password_cb * cb,void * u)83 int PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid,
84 char *kstr, int klen,
85 pem_password_cb *cb, void *u)
86 {
87 return do_pk8pkey(bp, x, 0, nid, NULL, kstr, klen, cb, u);
88 }
89
PEM_write_bio_PKCS8PrivateKey(BIO * bp,EVP_PKEY * x,const EVP_CIPHER * enc,char * kstr,int klen,pem_password_cb * cb,void * u)90 int PEM_write_bio_PKCS8PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
91 char *kstr, int klen,
92 pem_password_cb *cb, void *u)
93 {
94 return do_pk8pkey(bp, x, 0, -1, enc, kstr, klen, cb, u);
95 }
96
i2d_PKCS8PrivateKey_bio(BIO * bp,EVP_PKEY * x,const EVP_CIPHER * enc,char * kstr,int klen,pem_password_cb * cb,void * u)97 int i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
98 char *kstr, int klen,
99 pem_password_cb *cb, void *u)
100 {
101 return do_pk8pkey(bp, x, 1, -1, enc, kstr, klen, cb, u);
102 }
103
i2d_PKCS8PrivateKey_nid_bio(BIO * bp,EVP_PKEY * x,int nid,char * kstr,int klen,pem_password_cb * cb,void * u)104 int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid,
105 char *kstr, int klen,
106 pem_password_cb *cb, void *u)
107 {
108 return do_pk8pkey(bp, x, 1, nid, NULL, kstr, klen, cb, u);
109 }
110
do_pk8pkey(BIO * bp,EVP_PKEY * x,int isder,int nid,const EVP_CIPHER * enc,char * kstr,int klen,pem_password_cb * cb,void * u)111 static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, int nid,
112 const EVP_CIPHER *enc, char *kstr, int klen,
113 pem_password_cb *cb, void *u)
114 {
115 X509_SIG *p8;
116 PKCS8_PRIV_KEY_INFO *p8inf;
117 char buf[PEM_BUFSIZE];
118 int ret;
119 if (!(p8inf = EVP_PKEY2PKCS8(x))) {
120 PEMerr(PEM_F_DO_PK8PKEY, PEM_R_ERROR_CONVERTING_PRIVATE_KEY);
121 return 0;
122 }
123 if (enc || (nid != -1)) {
124 if (!kstr) {
125 if (!cb)
126 klen = PEM_def_callback(buf, PEM_BUFSIZE, 1, u);
127 else
128 klen = cb(buf, PEM_BUFSIZE, 1, u);
129 if (klen <= 0) {
130 PEMerr(PEM_F_DO_PK8PKEY, PEM_R_READ_KEY);
131 PKCS8_PRIV_KEY_INFO_free(p8inf);
132 return 0;
133 }
134
135 kstr = buf;
136 }
137 p8 = PKCS8_encrypt(nid, enc, kstr, klen, NULL, 0, 0, p8inf);
138 if (kstr == buf)
139 OPENSSL_cleanse(buf, klen);
140 PKCS8_PRIV_KEY_INFO_free(p8inf);
141 if (p8 == NULL)
142 return 0;
143 if (isder)
144 ret = i2d_PKCS8_bio(bp, p8);
145 else
146 ret = PEM_write_bio_PKCS8(bp, p8);
147 X509_SIG_free(p8);
148 return ret;
149 } else {
150 if (isder)
151 ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
152 else
153 ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf);
154 PKCS8_PRIV_KEY_INFO_free(p8inf);
155 return ret;
156 }
157 }
158
d2i_PKCS8PrivateKey_bio(BIO * bp,EVP_PKEY ** x,pem_password_cb * cb,void * u)159 EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb,
160 void *u)
161 {
162 PKCS8_PRIV_KEY_INFO *p8inf = NULL;
163 X509_SIG *p8 = NULL;
164 int klen;
165 EVP_PKEY *ret;
166 char psbuf[PEM_BUFSIZE];
167 p8 = d2i_PKCS8_bio(bp, NULL);
168 if (!p8)
169 return NULL;
170 if (cb)
171 klen = cb(psbuf, PEM_BUFSIZE, 0, u);
172 else
173 klen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u);
174 if (klen <= 0) {
175 PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_BIO, PEM_R_BAD_PASSWORD_READ);
176 X509_SIG_free(p8);
177 return NULL;
178 }
179 p8inf = PKCS8_decrypt(p8, psbuf, klen);
180 X509_SIG_free(p8);
181 if (!p8inf)
182 return NULL;
183 ret = EVP_PKCS82PKEY(p8inf);
184 PKCS8_PRIV_KEY_INFO_free(p8inf);
185 if (!ret)
186 return NULL;
187 if (x) {
188 if (*x)
189 EVP_PKEY_free(*x);
190 *x = ret;
191 }
192 return ret;
193 }
194
195 #ifndef OPENSSL_NO_FP_API
196
i2d_PKCS8PrivateKey_fp(FILE * fp,EVP_PKEY * x,const EVP_CIPHER * enc,char * kstr,int klen,pem_password_cb * cb,void * u)197 int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
198 char *kstr, int klen, pem_password_cb *cb, void *u)
199 {
200 return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u);
201 }
202
i2d_PKCS8PrivateKey_nid_fp(FILE * fp,EVP_PKEY * x,int nid,char * kstr,int klen,pem_password_cb * cb,void * u)203 int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid,
204 char *kstr, int klen,
205 pem_password_cb *cb, void *u)
206 {
207 return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u);
208 }
209
PEM_write_PKCS8PrivateKey_nid(FILE * fp,EVP_PKEY * x,int nid,char * kstr,int klen,pem_password_cb * cb,void * u)210 int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid,
211 char *kstr, int klen,
212 pem_password_cb *cb, void *u)
213 {
214 return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u);
215 }
216
PEM_write_PKCS8PrivateKey(FILE * fp,EVP_PKEY * x,const EVP_CIPHER * enc,char * kstr,int klen,pem_password_cb * cb,void * u)217 int PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
218 char *kstr, int klen, pem_password_cb *cb,
219 void *u)
220 {
221 return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u);
222 }
223
do_pk8pkey_fp(FILE * fp,EVP_PKEY * x,int isder,int nid,const EVP_CIPHER * enc,char * kstr,int klen,pem_password_cb * cb,void * u)224 static int do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, int nid,
225 const EVP_CIPHER *enc, char *kstr, int klen,
226 pem_password_cb *cb, void *u)
227 {
228 BIO *bp;
229 int ret;
230 if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
231 PEMerr(PEM_F_DO_PK8PKEY_FP, ERR_R_BUF_LIB);
232 return (0);
233 }
234 ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u);
235 BIO_free(bp);
236 return ret;
237 }
238
d2i_PKCS8PrivateKey_fp(FILE * fp,EVP_PKEY ** x,pem_password_cb * cb,void * u)239 EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb,
240 void *u)
241 {
242 BIO *bp;
243 EVP_PKEY *ret;
244 if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
245 PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_FP, ERR_R_BUF_LIB);
246 return NULL;
247 }
248 ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u);
249 BIO_free(bp);
250 return ret;
251 }
252
253 #endif
254
255 IMPLEMENT_PEM_rw(PKCS8, X509_SIG, PEM_STRING_PKCS8, X509_SIG)
256
257
258 IMPLEMENT_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF,
259 PKCS8_PRIV_KEY_INFO)
260