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diff --git a/src/lib/libcrypto/pem/pem_pk8.c b/src/lib/libcrypto/pem/pem_pk8.c
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1/* $OpenBSD: pem_pk8.c,v 1.14 2023/07/07 13:40:44 beck Exp $ */
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 <string.h>
61
62#include <openssl/buffer.h>
63#include <openssl/err.h>
64#include <openssl/evp.h>
65#include <openssl/objects.h>
66#include <openssl/pem.h>
67#include <openssl/pkcs12.h>
68#include <openssl/x509.h>
69
70static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, int nid,
71 const EVP_CIPHER *enc, char *kstr, int klen, pem_password_cb *cb, void *u);
72static int do_pk8pkey_fp(FILE *bp, EVP_PKEY *x, int isder, int nid,
73 const EVP_CIPHER *enc, char *kstr, int klen, pem_password_cb *cb, void *u);
74
75/* These functions write a private key in PKCS#8 format: it is a "drop in"
76 * replacement for PEM_write_bio_PrivateKey() and friends. As usual if 'enc'
77 * is NULL then it uses the unencrypted private key form. The 'nid' versions
78 * uses PKCS#5 v1.5 PBE algorithms whereas the others use PKCS#5 v2.0.
79 */
80
81int
82PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid, char *kstr,
83 int klen, pem_password_cb *cb, void *u)
84{
85 return do_pk8pkey(bp, x, 0, nid, NULL, kstr, klen, cb, u);
86}
87LCRYPTO_ALIAS(PEM_write_bio_PKCS8PrivateKey_nid);
88
89int
90PEM_write_bio_PKCS8PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
91 char *kstr, int klen, pem_password_cb *cb, void *u)
92{
93 return do_pk8pkey(bp, x, 0, -1, enc, kstr, klen, cb, u);
94}
95LCRYPTO_ALIAS(PEM_write_bio_PKCS8PrivateKey);
96
97int
98i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
99 char *kstr, int klen, pem_password_cb *cb, void *u)
100{
101 return do_pk8pkey(bp, x, 1, -1, enc, kstr, klen, cb, u);
102}
103LCRYPTO_ALIAS(i2d_PKCS8PrivateKey_bio);
104
105int
106i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid,
107 char *kstr, int klen, pem_password_cb *cb, void *u)
108{
109 return do_pk8pkey(bp, x, 1, nid, NULL, kstr, klen, cb, u);
110}
111LCRYPTO_ALIAS(i2d_PKCS8PrivateKey_nid_bio);
112
113static int
114do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc,
115 char *kstr, int klen, pem_password_cb *cb, void *u)
116{
117 X509_SIG *p8;
118 PKCS8_PRIV_KEY_INFO *p8inf;
119 char buf[PEM_BUFSIZE];
120 int ret;
121
122 if (!(p8inf = EVP_PKEY2PKCS8(x))) {
123 PEMerror(PEM_R_ERROR_CONVERTING_PRIVATE_KEY);
124 return 0;
125 }
126 if (enc || (nid != -1)) {
127 if (!kstr) {
128 if (!cb)
129 klen = PEM_def_callback(buf, PEM_BUFSIZE, 1, u);
130 else
131 klen = cb(buf, PEM_BUFSIZE, 1, u);
132 if (klen <= 0) {
133 PEMerror(PEM_R_READ_KEY);
134 PKCS8_PRIV_KEY_INFO_free(p8inf);
135 return 0;
136 }
137
138 kstr = buf;
139 }
140 p8 = PKCS8_encrypt(nid, enc, kstr, klen, NULL, 0, 0, p8inf);
141 if (kstr == buf)
142 explicit_bzero(buf, klen);
143 PKCS8_PRIV_KEY_INFO_free(p8inf);
144 if (isder)
145 ret = i2d_PKCS8_bio(bp, p8);
146 else
147 ret = PEM_write_bio_PKCS8(bp, p8);
148 X509_SIG_free(p8);
149 return ret;
150 } else {
151 if (isder)
152 ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
153 else
154 ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf);
155 PKCS8_PRIV_KEY_INFO_free(p8inf);
156 return ret;
157 }
158}
159
160EVP_PKEY *
161d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u)
162{
163 PKCS8_PRIV_KEY_INFO *p8inf = NULL;
164 X509_SIG *p8 = NULL;
165 int klen;
166 EVP_PKEY *ret;
167 char psbuf[PEM_BUFSIZE];
168
169 p8 = d2i_PKCS8_bio(bp, NULL);
170 if (!p8)
171 return NULL;
172 if (cb)
173 klen = cb(psbuf, PEM_BUFSIZE, 0, u);
174 else
175 klen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u);
176 if (klen <= 0) {
177 PEMerror(PEM_R_BAD_PASSWORD_READ);
178 X509_SIG_free(p8);
179 return NULL;
180 }
181 p8inf = PKCS8_decrypt(p8, psbuf, klen);
182 X509_SIG_free(p8);
183 if (!p8inf)
184 return NULL;
185 ret = EVP_PKCS82PKEY(p8inf);
186 PKCS8_PRIV_KEY_INFO_free(p8inf);
187 if (!ret)
188 return NULL;
189 if (x) {
190 EVP_PKEY_free(*x);
191 *x = ret;
192 }
193 return ret;
194}
195LCRYPTO_ALIAS(d2i_PKCS8PrivateKey_bio);
196
197
198int
199i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
200 char *kstr, int klen, pem_password_cb *cb, void *u)
201{
202 return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u);
203}
204LCRYPTO_ALIAS(i2d_PKCS8PrivateKey_fp);
205
206int
207i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid, char *kstr,
208 int klen, pem_password_cb *cb, void *u)
209{
210 return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u);
211}
212LCRYPTO_ALIAS(i2d_PKCS8PrivateKey_nid_fp);
213
214int
215PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid, char *kstr,
216 int klen, pem_password_cb *cb, void *u)
217{
218 return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u);
219}
220LCRYPTO_ALIAS(PEM_write_PKCS8PrivateKey_nid);
221
222int
223PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
224 char *kstr, int klen, pem_password_cb *cb, void *u)
225{
226 return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u);
227}
228LCRYPTO_ALIAS(PEM_write_PKCS8PrivateKey);
229
230static int
231do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc,
232 char *kstr, int klen, pem_password_cb *cb, void *u)
233{
234 BIO *bp;
235 int ret;
236
237 if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
238 PEMerror(ERR_R_BUF_LIB);
239 return (0);
240 }
241 ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u);
242 BIO_free(bp);
243 return ret;
244}
245
246EVP_PKEY *
247d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u)
248{
249 BIO *bp;
250 EVP_PKEY *ret;
251
252 if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
253 PEMerror(ERR_R_BUF_LIB);
254 return NULL;
255 }
256 ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u);
257 BIO_free(bp);
258 return ret;
259}
260LCRYPTO_ALIAS(d2i_PKCS8PrivateKey_fp);
261
262X509_SIG *
263PEM_read_PKCS8(FILE *fp, X509_SIG **x, pem_password_cb *cb, void *u)
264{
265 return PEM_ASN1_read((d2i_of_void *)d2i_X509_SIG, PEM_STRING_PKCS8, fp,
266 (void **)x, cb, u);
267}
268LCRYPTO_ALIAS(PEM_read_PKCS8);
269
270int
271PEM_write_PKCS8(FILE *fp, X509_SIG *x)
272{
273 return PEM_ASN1_write((i2d_of_void *)i2d_X509_SIG, PEM_STRING_PKCS8, fp,
274 x, NULL, NULL, 0, NULL, NULL);
275}
276LCRYPTO_ALIAS(PEM_write_PKCS8);
277
278X509_SIG *
279PEM_read_bio_PKCS8(BIO *bp, X509_SIG **x, pem_password_cb *cb, void *u)
280{
281 return PEM_ASN1_read_bio((d2i_of_void *)d2i_X509_SIG, PEM_STRING_PKCS8, bp,
282 (void **)x, cb, u);
283}
284LCRYPTO_ALIAS(PEM_read_bio_PKCS8);
285
286int
287PEM_write_bio_PKCS8(BIO *bp, X509_SIG *x)
288{
289 return PEM_ASN1_write_bio((i2d_of_void *)i2d_X509_SIG, PEM_STRING_PKCS8, bp,
290 x, NULL, NULL, 0, NULL, NULL);
291}
292LCRYPTO_ALIAS(PEM_write_bio_PKCS8);
293
294PKCS8_PRIV_KEY_INFO *
295PEM_read_PKCS8_PRIV_KEY_INFO(FILE *fp, PKCS8_PRIV_KEY_INFO **x, pem_password_cb *cb, void *u)
296{
297 return PEM_ASN1_read((d2i_of_void *)d2i_PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF, fp,
298 (void **)x, cb, u);
299}
300LCRYPTO_ALIAS(PEM_read_PKCS8_PRIV_KEY_INFO);
301
302int
303PEM_write_PKCS8_PRIV_KEY_INFO(FILE *fp, PKCS8_PRIV_KEY_INFO *x)
304{
305 return PEM_ASN1_write((i2d_of_void *)i2d_PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF, fp,
306 x, NULL, NULL, 0, NULL, NULL);
307}
308LCRYPTO_ALIAS(PEM_write_PKCS8_PRIV_KEY_INFO);
309
310PKCS8_PRIV_KEY_INFO *
311PEM_read_bio_PKCS8_PRIV_KEY_INFO(BIO *bp, PKCS8_PRIV_KEY_INFO **x, pem_password_cb *cb, void *u)
312{
313 return PEM_ASN1_read_bio((d2i_of_void *)d2i_PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF, bp,
314 (void **)x, cb, u);
315}
316LCRYPTO_ALIAS(PEM_read_bio_PKCS8_PRIV_KEY_INFO);
317
318int
319PEM_write_bio_PKCS8_PRIV_KEY_INFO(BIO *bp, PKCS8_PRIV_KEY_INFO *x)
320{
321 return PEM_ASN1_write_bio((i2d_of_void *)i2d_PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF, bp,
322 x, NULL, NULL, 0, NULL, NULL);
323}
324LCRYPTO_ALIAS(PEM_write_bio_PKCS8_PRIV_KEY_INFO);