1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
|
/*
* Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/core_dispatch.h>
#include <openssl/buffer.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/pkcs12.h>
#include <openssl/pem.h>
#include <openssl/encoder.h>
static int do_pk8pkey(BIO *bp, const EVP_PKEY *x, int isder,
int nid, const EVP_CIPHER *enc,
const char *kstr, int klen,
pem_password_cb *cb, void *u,
const char *propq);
#ifndef OPENSSL_NO_STDIO
static int do_pk8pkey_fp(FILE *bp, const EVP_PKEY *x, int isder,
int nid, const EVP_CIPHER *enc,
const char *kstr, int klen,
pem_password_cb *cb, void *u,
const char *propq);
#endif
/*
* These functions write a private key in PKCS#8 format: it is a "drop in"
* replacement for PEM_write_bio_PrivateKey() and friends. As usual if 'enc'
* is NULL then it uses the unencrypted private key form. The 'nid' versions
* uses PKCS#5 v1.5 PBE algorithms whereas the others use PKCS#5 v2.0.
*/
int PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, const EVP_PKEY *x, int nid,
const char *kstr, int klen,
pem_password_cb *cb, void *u)
{
return do_pk8pkey(bp, x, 0, nid, NULL, kstr, klen, cb, u, NULL);
}
int PEM_write_bio_PKCS8PrivateKey(BIO *bp, const EVP_PKEY *x, const EVP_CIPHER *enc,
const char *kstr, int klen,
pem_password_cb *cb, void *u)
{
return do_pk8pkey(bp, x, 0, -1, enc, kstr, klen, cb, u, NULL);
}
int i2d_PKCS8PrivateKey_bio(BIO *bp, const EVP_PKEY *x, const EVP_CIPHER *enc,
const char *kstr, int klen,
pem_password_cb *cb, void *u)
{
return do_pk8pkey(bp, x, 1, -1, enc, kstr, klen, cb, u, NULL);
}
int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, const EVP_PKEY *x, int nid,
const char *kstr, int klen,
pem_password_cb *cb, void *u)
{
return do_pk8pkey(bp, x, 1, nid, NULL, kstr, klen, cb, u, NULL);
}
static int do_pk8pkey(BIO *bp, const EVP_PKEY *x, int isder, int nid,
const EVP_CIPHER *enc, const char *kstr, int klen,
pem_password_cb *cb, void *u, const char *propq)
{
int ret = 0;
const char *outtype = isder ? "DER" : "PEM";
OSSL_ENCODER_CTX *ctx =
OSSL_ENCODER_CTX_new_for_pkey(x, OSSL_KEYMGMT_SELECT_ALL,
outtype, "PrivateKeyInfo", propq);
if (ctx == NULL)
return 0;
/*
* If no keystring or callback is set, OpenSSL traditionally uses the
* user's cb argument as a password string, or if that's NULL, it falls
* back on PEM_def_callback().
*/
if (kstr == NULL && cb == NULL) {
if (u != NULL) {
kstr = u;
klen = strlen(u);
} else {
cb = PEM_def_callback;
}
}
/*
* NOTE: There is no attempt to do a EVP_CIPHER_fetch() using the nid,
* since the nid is a PBE algorithm which can't be fetched currently.
* (e.g. NID_pbe_WithSHA1And2_Key_TripleDES_CBC). Just use the legacy
* path if the NID is passed.
*/
if (nid == -1 && OSSL_ENCODER_CTX_get_num_encoders(ctx) != 0) {
ret = 1;
if (enc != NULL) {
ret = 0;
if (OSSL_ENCODER_CTX_set_cipher(ctx, EVP_CIPHER_get0_name(enc),
NULL)) {
const unsigned char *ukstr = (const unsigned char *)kstr;
/*
* Try to pass the passphrase if one was given, or the
* passphrase callback if one was given. If none of them
* are given and that's wrong, we rely on the _to_bio()
* call to generate errors.
*/
ret = 1;
if (kstr != NULL
&& !OSSL_ENCODER_CTX_set_passphrase(ctx, ukstr, klen))
ret = 0;
else if (cb != NULL
&& !OSSL_ENCODER_CTX_set_pem_password_cb(ctx, cb, u))
ret = 0;
}
}
ret = ret && OSSL_ENCODER_to_bio(ctx, bp);
} else {
X509_SIG *p8;
PKCS8_PRIV_KEY_INFO *p8inf;
char buf[PEM_BUFSIZE];
ret = 0;
if ((p8inf = EVP_PKEY2PKCS8(x)) == NULL) {
ERR_raise(ERR_LIB_PEM, PEM_R_ERROR_CONVERTING_PRIVATE_KEY);
goto legacy_end;
}
if (enc || (nid != -1)) {
if (kstr == NULL) {
klen = cb(buf, PEM_BUFSIZE, 1, u);
if (klen < 0) {
ERR_raise(ERR_LIB_PEM, PEM_R_READ_KEY);
goto legacy_end;
}
kstr = buf;
}
p8 = PKCS8_encrypt(nid, enc, kstr, klen, NULL, 0, 0, p8inf);
if (kstr == buf)
OPENSSL_cleanse(buf, klen);
if (p8 == NULL)
goto legacy_end;
if (isder)
ret = i2d_PKCS8_bio(bp, p8);
else
ret = PEM_write_bio_PKCS8(bp, p8);
X509_SIG_free(p8);
} else {
if (isder)
ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
else
ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf);
}
legacy_end:
PKCS8_PRIV_KEY_INFO_free(p8inf);
}
OSSL_ENCODER_CTX_free(ctx);
return ret;
}
EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb,
void *u)
{
PKCS8_PRIV_KEY_INFO *p8inf = NULL;
X509_SIG *p8 = NULL;
int klen;
EVP_PKEY *ret;
char psbuf[PEM_BUFSIZE];
p8 = d2i_PKCS8_bio(bp, NULL);
if (p8 == NULL)
return NULL;
if (cb != NULL)
klen = cb(psbuf, PEM_BUFSIZE, 0, u);
else
klen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u);
if (klen < 0) {
ERR_raise(ERR_LIB_PEM, PEM_R_BAD_PASSWORD_READ);
X509_SIG_free(p8);
return NULL;
}
p8inf = PKCS8_decrypt(p8, psbuf, klen);
X509_SIG_free(p8);
OPENSSL_cleanse(psbuf, klen);
if (p8inf == NULL)
return NULL;
ret = EVP_PKCS82PKEY(p8inf);
PKCS8_PRIV_KEY_INFO_free(p8inf);
if (!ret)
return NULL;
if (x != NULL) {
EVP_PKEY_free(*x);
*x = ret;
}
return ret;
}
#ifndef OPENSSL_NO_STDIO
int i2d_PKCS8PrivateKey_fp(FILE *fp, const EVP_PKEY *x, const EVP_CIPHER *enc,
const char *kstr, int klen,
pem_password_cb *cb, void *u)
{
return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u, NULL);
}
int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, const EVP_PKEY *x, int nid,
const char *kstr, int klen,
pem_password_cb *cb, void *u)
{
return do_p
|