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git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/pem/pem_info.c
2 * Copyright 1995-2021 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 #ifndef OPENSSL_NO_STDIO
28 *PEM_X509_INFO_read_ex(FILE *fp
, STACK_OF(X509_INFO
) *sk
, pem_password_cb
*cb
,
29 void *u
, OSSL_LIB_CTX
*libctx
, const char *propq
)
32 STACK_OF(X509_INFO
) *ret
;
34 if ((b
= BIO_new(BIO_s_file())) == NULL
) {
35 ERR_raise(ERR_LIB_PEM
, ERR_R_BUF_LIB
);
38 BIO_set_fp(b
, fp
, BIO_NOCLOSE
);
39 ret
= PEM_X509_INFO_read_bio_ex(b
, sk
, cb
, u
, libctx
, propq
);
44 STACK_OF(X509_INFO
) *PEM_X509_INFO_read(FILE *fp
, STACK_OF(X509_INFO
) *sk
,
45 pem_password_cb
*cb
, void *u
)
47 return PEM_X509_INFO_read_ex(fp
, sk
, cb
, u
, NULL
, NULL
);
51 STACK_OF(X509_INFO
) *PEM_X509_INFO_read_bio_ex(BIO
*bp
, STACK_OF(X509_INFO
) *sk
,
52 pem_password_cb
*cb
, void *u
,
57 char *name
= NULL
, *header
= NULL
;
59 unsigned char *data
= NULL
;
60 const unsigned char *p
;
63 STACK_OF(X509_INFO
) *ret
= NULL
;
64 unsigned int i
, raw
, ptype
;
68 if ((ret
= sk_X509_INFO_new_null()) == NULL
) {
69 ERR_raise(ERR_LIB_PEM
, ERR_R_MALLOC_FAILURE
);
75 if ((xi
= X509_INFO_new()) == NULL
)
81 i
= PEM_read_bio(bp
, &name
, &header
, &data
, &len
);
83 error
= ERR_GET_REASON(ERR_peek_last_error());
84 if (error
== PEM_R_NO_START_LINE
) {
88 ERR_clear_last_mark();
91 ERR_clear_last_mark();
93 if ((strcmp(name
, PEM_STRING_X509
) == 0) ||
94 (strcmp(name
, PEM_STRING_X509_OLD
) == 0)) {
95 d2i
= (D2I_OF(void)) d2i_X509
;
96 if (xi
->x509
!= NULL
) {
97 if (!sk_X509_INFO_push(ret
, xi
))
99 if ((xi
= X509_INFO_new()) == NULL
)
103 xi
->x509
= X509_new_ex(libctx
, propq
);
104 if (xi
->x509
== NULL
)
107 } else if ((strcmp(name
, PEM_STRING_X509_TRUSTED
) == 0)) {
108 d2i
= (D2I_OF(void)) d2i_X509_AUX
;
109 if (xi
->x509
!= NULL
) {
110 if (!sk_X509_INFO_push(ret
, xi
))
112 if ((xi
= X509_INFO_new()) == NULL
)
116 xi
->x509
= X509_new_ex(libctx
, propq
);
117 if (xi
->x509
== NULL
)
120 } else if (strcmp(name
, PEM_STRING_X509_CRL
) == 0) {
121 d2i
= (D2I_OF(void)) d2i_X509_CRL
;
122 if (xi
->crl
!= NULL
) {
123 if (!sk_X509_INFO_push(ret
, xi
))
125 if ((xi
= X509_INFO_new()) == NULL
)
130 } else if (strcmp(name
, PEM_STRING_RSA
) == 0) {
131 d2i
= (D2I_OF(void)) d2i_RSAPrivateKey
;
132 if (xi
->x_pkey
!= NULL
) {
133 if (!sk_X509_INFO_push(ret
, xi
))
135 if ((xi
= X509_INFO_new()) == NULL
)
143 xi
->x_pkey
= X509_PKEY_new();
144 if (xi
->x_pkey
== NULL
)
146 ptype
= EVP_PKEY_RSA
;
147 pp
= &xi
->x_pkey
->dec_pkey
;
148 if ((int)strlen(header
) > 10) /* assume encrypted */
151 #ifndef OPENSSL_NO_DSA
152 if (strcmp(name
, PEM_STRING_DSA
) == 0) {
153 d2i
= (D2I_OF(void)) d2i_DSAPrivateKey
;
154 if (xi
->x_pkey
!= NULL
) {
155 if (!sk_X509_INFO_push(ret
, xi
))
157 if ((xi
= X509_INFO_new()) == NULL
)
165 xi
->x_pkey
= X509_PKEY_new();
166 if (xi
->x_pkey
== NULL
)
168 ptype
= EVP_PKEY_DSA
;
169 pp
= &xi
->x_pkey
->dec_pkey
;
170 if ((int)strlen(header
) > 10) /* assume encrypted */
174 #ifndef OPENSSL_NO_EC
175 if (strcmp(name
, PEM_STRING_ECPRIVATEKEY
) == 0) {
176 d2i
= (D2I_OF(void)) d2i_ECPrivateKey
;
177 if (xi
->x_pkey
!= NULL
) {
178 if (!sk_X509_INFO_push(ret
, xi
))
180 if ((xi
= X509_INFO_new()) == NULL
)
188 xi
->x_pkey
= X509_PKEY_new();
189 if (xi
->x_pkey
== NULL
)
192 pp
= &xi
->x_pkey
->dec_pkey
;
193 if ((int)strlen(header
) > 10) /* assume encrypted */
204 EVP_CIPHER_INFO cipher
;
206 if (!PEM_get_EVP_CIPHER_INFO(header
, &cipher
))
208 if (!PEM_do_header(&cipher
, data
, &len
, cb
, u
))
212 if (!d2i_PrivateKey(ptype
, pp
, &p
, len
)) {
213 ERR_raise(ERR_LIB_PEM
, ERR_R_ASN1_LIB
);
216 } else if (d2i(pp
, &p
, len
) == NULL
) {
217 ERR_raise(ERR_LIB_PEM
, ERR_R_ASN1_LIB
);
220 } else { /* encrypted RSA data */
221 if (!PEM_get_EVP_CIPHER_INFO(header
, &xi
->enc_cipher
))
223 xi
->enc_data
= (char *)data
;
224 xi
->enc_len
= (int)len
;
232 OPENSSL_free(header
);
239 * if the last one hasn't been pushed yet and there is anything in it
240 * then add it to the stack ...
242 if ((xi
->x509
!= NULL
) || (xi
->crl
!= NULL
) ||
243 (xi
->x_pkey
!= NULL
) || (xi
->enc_data
!= NULL
)) {
244 if (!sk_X509_INFO_push(ret
, xi
))
252 for (i
= 0; ((int)i
) < sk_X509_INFO_num(ret
); i
++) {
253 xi
= sk_X509_INFO_value(ret
, i
);
257 sk_X509_INFO_free(ret
);
262 OPENSSL_free(header
);
267 STACK_OF(X509_INFO
) *PEM_X509_INFO_read_bio(BIO
*bp
, STACK_OF(X509_INFO
) *sk
,
268 pem_password_cb
*cb
, void *u
)
270 return PEM_X509_INFO_read_bio_ex(bp
, sk
, cb
, u
, NULL
, NULL
);
274 int PEM_X509_INFO_write_bio(BIO
*bp
, const X509_INFO
*xi
, EVP_CIPHER
*enc
,
275 const unsigned char *kstr
, int klen
,
276 pem_password_cb
*cb
, void *u
)
279 unsigned char *data
= NULL
;
280 const char *objstr
= NULL
;
281 char buf
[PEM_BUFSIZE
];
282 const unsigned char *iv
= NULL
;
285 objstr
= OBJ_nid2sn(EVP_CIPHER_nid(enc
));
288 * Check "Proc-Type: 4,Encrypted\nDEK-Info: objstr,hex-iv\n"
291 || (strlen(objstr
) + 23 + 2 * EVP_CIPHER_iv_length(enc
) + 13)
293 ERR_raise(ERR_LIB_PEM
, PEM_R_UNSUPPORTED_CIPHER
);
299 * now for the fun part ... if we have a private key then we have to be
300 * able to handle a not-yet-decrypted key being written out correctly ...
301 * if it is decrypted or it is non-encrypted then we use the base code
303 if (xi
->x_pkey
!= NULL
) {
304 if ((xi
->enc_data
!= NULL
) && (xi
->enc_len
> 0)) {
306 ERR_raise(ERR_LIB_PEM
, PEM_R_CIPHER_IS_NULL
);
310 /* copy from weirdo names into more normal things */
311 iv
= xi
->enc_cipher
.iv
;
312 data
= (unsigned char *)xi
->enc_data
;
316 * we take the encryption data from the internal stuff rather
317 * than what the user has passed us ... as we have to match
318 * exactly for some strange reason
320 objstr
= OBJ_nid2sn(EVP_CIPHER_nid(xi
->enc_cipher
.cipher
));
321 if (objstr
== NULL
) {
322 ERR_raise(ERR_LIB_PEM
, PEM_R_UNSUPPORTED_CIPHER
);
326 /* Create the right magic header stuff */
328 PEM_proc_type(buf
, PEM_TYPE_ENCRYPTED
);
329 PEM_dek_info(buf
, objstr
, EVP_CIPHER_iv_length(enc
),
332 /* use the normal code to write things out */
333 i
= PEM_write_bio(bp
, PEM_STRING_RSA
, buf
, data
, i
);
338 /* normal optionally encrypted stuff */
339 if (PEM_write_bio_RSAPrivateKey(bp
,
340 EVP_PKEY_get0_RSA(xi
->x_pkey
->dec_pkey
),
341 enc
, kstr
, klen
, cb
, u
) <= 0)
346 /* if we have a certificate then write it out now */
347 if ((xi
->x509
!= NULL
) && (PEM_write_bio_X509(bp
, xi
->x509
) <= 0))
351 * we are ignoring anything else that is loaded into the X509_INFO
352 * structure for the moment ... as I don't need it so I'm not coding it
353 * here and Eric can do it when this makes it into the base library --tjh
359 OPENSSL_cleanse(buf
, PEM_BUFSIZE
);