Line data Source code
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 :
83 0 : 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 0 : return do_pk8pkey(bp, x, 0, nid, NULL, kstr, klen, cb, u);
88 : }
89 :
90 0 : 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 0 : return do_pk8pkey(bp, x, 0, -1, enc, kstr, klen, cb, u);
95 : }
96 :
97 0 : 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 0 : return do_pk8pkey(bp, x, 1, -1, enc, kstr, klen, cb, u);
102 : }
103 :
104 0 : 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 0 : return do_pk8pkey(bp, x, 1, nid, NULL, kstr, klen, cb, u);
109 : }
110 :
111 0 : 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 0 : if (!(p8inf = EVP_PKEY2PKCS8(x))) {
120 0 : PEMerr(PEM_F_DO_PK8PKEY, PEM_R_ERROR_CONVERTING_PRIVATE_KEY);
121 0 : return 0;
122 : }
123 0 : if (enc || (nid != -1)) {
124 0 : if (!kstr) {
125 0 : if (!cb)
126 0 : klen = PEM_def_callback(buf, PEM_BUFSIZE, 1, u);
127 : else
128 0 : klen = cb(buf, PEM_BUFSIZE, 1, u);
129 0 : if (klen <= 0) {
130 0 : PEMerr(PEM_F_DO_PK8PKEY, PEM_R_READ_KEY);
131 0 : PKCS8_PRIV_KEY_INFO_free(p8inf);
132 0 : return 0;
133 : }
134 :
135 : kstr = buf;
136 : }
137 0 : p8 = PKCS8_encrypt(nid, enc, kstr, klen, NULL, 0, 0, p8inf);
138 0 : if (kstr == buf)
139 0 : OPENSSL_cleanse(buf, klen);
140 0 : PKCS8_PRIV_KEY_INFO_free(p8inf);
141 0 : if (p8 == NULL)
142 : return 0;
143 0 : if (isder)
144 0 : ret = i2d_PKCS8_bio(bp, p8);
145 : else
146 0 : ret = PEM_write_bio_PKCS8(bp, p8);
147 0 : X509_SIG_free(p8);
148 0 : return ret;
149 : } else {
150 0 : if (isder)
151 0 : ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
152 : else
153 0 : ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf);
154 0 : PKCS8_PRIV_KEY_INFO_free(p8inf);
155 0 : return ret;
156 : }
157 : }
158 :
159 0 : 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 0 : p8 = d2i_PKCS8_bio(bp, NULL);
168 0 : if (!p8)
169 : return NULL;
170 0 : if (cb)
171 0 : klen = cb(psbuf, PEM_BUFSIZE, 0, u);
172 : else
173 0 : klen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u);
174 0 : if (klen <= 0) {
175 0 : PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_BIO, PEM_R_BAD_PASSWORD_READ);
176 0 : X509_SIG_free(p8);
177 0 : return NULL;
178 : }
179 0 : p8inf = PKCS8_decrypt(p8, psbuf, klen);
180 0 : X509_SIG_free(p8);
181 0 : if (!p8inf)
182 : return NULL;
183 0 : ret = EVP_PKCS82PKEY(p8inf);
184 0 : PKCS8_PRIV_KEY_INFO_free(p8inf);
185 0 : if (!ret)
186 : return NULL;
187 0 : if (x) {
188 0 : if (*x)
189 0 : EVP_PKEY_free(*x);
190 0 : *x = ret;
191 : }
192 0 : return ret;
193 : }
194 :
195 : #ifndef OPENSSL_NO_FP_API
196 :
197 0 : 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 0 : return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u);
201 : }
202 :
203 0 : 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 0 : return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u);
208 : }
209 :
210 0 : 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 0 : return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u);
215 : }
216 :
217 0 : 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 0 : return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u);
222 : }
223 :
224 0 : 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 0 : if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
231 0 : PEMerr(PEM_F_DO_PK8PKEY_FP, ERR_R_BUF_LIB);
232 0 : return (0);
233 : }
234 0 : ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u);
235 0 : BIO_free(bp);
236 0 : return ret;
237 : }
238 :
239 0 : 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 0 : if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
245 0 : PEMerr(PEM_F_D2I_PKCS8PRIVATEKEY_FP, ERR_R_BUF_LIB);
246 0 : return NULL;
247 : }
248 0 : ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u);
249 0 : BIO_free(bp);
250 0 : return ret;
251 : }
252 :
253 : #endif
254 :
255 0 : IMPLEMENT_PEM_rw(PKCS8, X509_SIG, PEM_STRING_PKCS8, X509_SIG)
256 :
257 :
258 0 : IMPLEMENT_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF,
259 : PKCS8_PRIV_KEY_INFO)
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