2 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 * DSA low level APIs are deprecated for public use, but still ok for
14 #include "internal/deprecated.h"
17 #include "internal/cryptlib.h"
18 #include <openssl/buffer.h>
19 #include <openssl/objects.h>
20 #include <openssl/evp.h>
21 #include <openssl/x509.h>
22 #include <openssl/pem.h>
23 #include <openssl/rsa.h>
24 #include <openssl/dsa.h>
26 DEFINE_STACK_OF(X509_INFO
)
28 #ifndef OPENSSL_NO_STDIO
29 STACK_OF(X509_INFO
) *PEM_X509_INFO_read(FILE *fp
, STACK_OF(X509_INFO
) *sk
,
30 pem_password_cb
*cb
, void *u
)
33 STACK_OF(X509_INFO
) *ret
;
35 if ((b
= BIO_new(BIO_s_file())) == NULL
) {
36 PEMerr(PEM_F_PEM_X509_INFO_READ
, ERR_R_BUF_LIB
);
39 BIO_set_fp(b
, fp
, BIO_NOCLOSE
);
40 ret
= PEM_X509_INFO_read_bio(b
, sk
, cb
, u
);
46 STACK_OF(X509_INFO
) *PEM_X509_INFO_read_bio(BIO
*bp
, STACK_OF(X509_INFO
) *sk
,
47 pem_password_cb
*cb
, void *u
)
50 char *name
= NULL
, *header
= NULL
;
52 unsigned char *data
= NULL
;
53 const unsigned char *p
;
56 STACK_OF(X509_INFO
) *ret
= NULL
;
57 unsigned int i
, raw
, ptype
;
61 if ((ret
= sk_X509_INFO_new_null()) == NULL
) {
62 PEMerr(PEM_F_PEM_X509_INFO_READ_BIO
, ERR_R_MALLOC_FAILURE
);
68 if ((xi
= X509_INFO_new()) == NULL
)
73 i
= PEM_read_bio(bp
, &name
, &header
, &data
, &len
);
75 error
= ERR_GET_REASON(ERR_peek_last_error());
76 if (error
== PEM_R_NO_START_LINE
) {
83 if ((strcmp(name
, PEM_STRING_X509
) == 0) ||
84 (strcmp(name
, PEM_STRING_X509_OLD
) == 0)) {
85 d2i
= (D2I_OF(void)) d2i_X509
;
86 if (xi
->x509
!= NULL
) {
87 if (!sk_X509_INFO_push(ret
, xi
))
89 if ((xi
= X509_INFO_new()) == NULL
)
94 } else if ((strcmp(name
, PEM_STRING_X509_TRUSTED
) == 0)) {
95 d2i
= (D2I_OF(void)) d2i_X509_AUX
;
96 if (xi
->x509
!= NULL
) {
97 if (!sk_X509_INFO_push(ret
, xi
))
99 if ((xi
= X509_INFO_new()) == NULL
)
104 } else if (strcmp(name
, PEM_STRING_X509_CRL
) == 0) {
105 d2i
= (D2I_OF(void)) d2i_X509_CRL
;
106 if (xi
->crl
!= NULL
) {
107 if (!sk_X509_INFO_push(ret
, xi
))
109 if ((xi
= X509_INFO_new()) == NULL
)
115 #ifndef OPENSSL_NO_RSA
116 if (strcmp(name
, PEM_STRING_RSA
) == 0) {
117 d2i
= (D2I_OF(void)) d2i_RSAPrivateKey
;
118 if (xi
->x_pkey
!= NULL
) {
119 if (!sk_X509_INFO_push(ret
, xi
))
121 if ((xi
= X509_INFO_new()) == NULL
)
129 xi
->x_pkey
= X509_PKEY_new();
130 if (xi
->x_pkey
== NULL
)
132 ptype
= EVP_PKEY_RSA
;
133 pp
= &xi
->x_pkey
->dec_pkey
;
134 if ((int)strlen(header
) > 10) /* assume encrypted */
138 #ifndef OPENSSL_NO_DSA
139 if (strcmp(name
, PEM_STRING_DSA
) == 0) {
140 d2i
= (D2I_OF(void)) d2i_DSAPrivateKey
;
141 if (xi
->x_pkey
!= NULL
) {
142 if (!sk_X509_INFO_push(ret
, xi
))
144 if ((xi
= X509_INFO_new()) == NULL
)
152 xi
->x_pkey
= X509_PKEY_new();
153 if (xi
->x_pkey
== NULL
)
155 ptype
= EVP_PKEY_DSA
;
156 pp
= &xi
->x_pkey
->dec_pkey
;
157 if ((int)strlen(header
) > 10) /* assume encrypted */
161 #ifndef OPENSSL_NO_EC
162 if (strcmp(name
, PEM_STRING_ECPRIVATEKEY
) == 0) {
163 d2i
= (D2I_OF(void)) d2i_ECPrivateKey
;
164 if (xi
->x_pkey
!= NULL
) {
165 if (!sk_X509_INFO_push(ret
, xi
))
167 if ((xi
= X509_INFO_new()) == NULL
)
175 xi
->x_pkey
= X509_PKEY_new();
176 if (xi
->x_pkey
== NULL
)
179 pp
= &xi
->x_pkey
->dec_pkey
;
180 if ((int)strlen(header
) > 10) /* assume encrypted */
191 EVP_CIPHER_INFO cipher
;
193 if (!PEM_get_EVP_CIPHER_INFO(header
, &cipher
))
195 if (!PEM_do_header(&cipher
, data
, &len
, cb
, u
))
199 if (!d2i_PrivateKey(ptype
, pp
, &p
, len
)) {
200 PEMerr(PEM_F_PEM_X509_INFO_READ_BIO
, ERR_R_ASN1_LIB
);
203 } else if (d2i(pp
, &p
, len
) == NULL
) {
204 PEMerr(PEM_F_PEM_X509_INFO_READ_BIO
, ERR_R_ASN1_LIB
);
207 } else { /* encrypted RSA data */
208 if (!PEM_get_EVP_CIPHER_INFO(header
, &xi
->enc_cipher
))
210 xi
->enc_data
= (char *)data
;
211 xi
->enc_len
= (int)len
;
219 OPENSSL_free(header
);
226 * if the last one hasn't been pushed yet and there is anything in it
227 * then add it to the stack ...
229 if ((xi
->x509
!= NULL
) || (xi
->crl
!= NULL
) ||
230 (xi
->x_pkey
!= NULL
) || (xi
->enc_data
!= NULL
)) {
231 if (!sk_X509_INFO_push(ret
, xi
))
239 for (i
= 0; ((int)i
) < sk_X509_INFO_num(ret
); i
++) {
240 xi
= sk_X509_INFO_value(ret
, i
);
244 sk_X509_INFO_free(ret
);
249 OPENSSL_free(header
);
255 int PEM_X509_INFO_write_bio(BIO
*bp
, const X509_INFO
*xi
, EVP_CIPHER
*enc
,
256 const unsigned char *kstr
, int klen
,
257 pem_password_cb
*cb
, void *u
)
260 unsigned char *data
= NULL
;
261 const char *objstr
= NULL
;
262 char buf
[PEM_BUFSIZE
];
263 const unsigned char *iv
= NULL
;
266 objstr
= OBJ_nid2sn(EVP_CIPHER_nid(enc
));
269 * Check "Proc-Type: 4,Encrypted\nDEK-Info: objstr,hex-iv\n"
272 || (strlen(objstr
) + 23 + 2 * EVP_CIPHER_iv_length(enc
) + 13)
274 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO
, PEM_R_UNSUPPORTED_CIPHER
);
280 * now for the fun part ... if we have a private key then we have to be
281 * able to handle a not-yet-decrypted key being written out correctly ...
282 * if it is decrypted or it is non-encrypted then we use the base code
284 if (xi
->x_pkey
!= NULL
) {
285 if ((xi
->enc_data
!= NULL
) && (xi
->enc_len
> 0)) {
287 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO
, PEM_R_CIPHER_IS_NULL
);
291 /* copy from weirdo names into more normal things */
292 iv
= xi
->enc_cipher
.iv
;
293 data
= (unsigned char *)xi
->enc_data
;
297 * we take the encryption data from the internal stuff rather
298 * than what the user has passed us ... as we have to match
299 * exactly for some strange reason
301 objstr
= OBJ_nid2sn(EVP_CIPHER_nid(xi
->enc_cipher
.cipher
));
302 if (objstr
== NULL
) {
303 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO
,
304 PEM_R_UNSUPPORTED_CIPHER
);
308 /* Create the right magic header stuff */
310 PEM_proc_type(buf
, PEM_TYPE_ENCRYPTED
);
311 PEM_dek_info(buf
, objstr
, EVP_CIPHER_iv_length(enc
),
314 /* use the normal code to write things out */
315 i
= PEM_write_bio(bp
, PEM_STRING_RSA
, buf
, data
, i
);
320 #ifndef OPENSSL_NO_RSA
321 /* normal optionally encrypted stuff */
322 if (PEM_write_bio_RSAPrivateKey(bp
,
323 EVP_PKEY_get0_RSA(xi
->x_pkey
->dec_pkey
),
324 enc
, kstr
, klen
, cb
, u
) <= 0)
330 /* if we have a certificate then write it out now */
331 if ((xi
->x509
!= NULL
) && (PEM_write_bio_X509(bp
, xi
->x509
) <= 0))
335 * we are ignoring anything else that is loaded into the X509_INFO
336 * structure for the moment ... as I don't need it so I'm not coding it
337 * here and Eric can do it when this makes it into the base library --tjh
343 OPENSSL_cleanse(buf
, PEM_BUFSIZE
);