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 #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 PEMerr(0, 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);
52 *PEM_X509_INFO_read_bio_ex(BIO *bp, STACK_OF(X509_INFO) *sk,
53 pem_password_cb *cb, void *u, OSSL_LIB_CTX *libctx,
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 PEMerr(0, ERR_R_MALLOC_FAILURE);
75 if ((xi = X509_INFO_new()) == NULL)
80 i = PEM_read_bio(bp, &name, &header, &data, &len);
82 error = ERR_GET_REASON(ERR_peek_last_error());
83 if (error == PEM_R_NO_START_LINE) {
90 if ((strcmp(name, PEM_STRING_X509) == 0) ||
91 (strcmp(name, PEM_STRING_X509_OLD) == 0)) {
92 d2i = (D2I_OF(void)) d2i_X509;
93 if (xi->x509 != NULL) {
94 if (!sk_X509_INFO_push(ret, xi))
96 if ((xi = X509_INFO_new()) == NULL)
100 xi->x509 = X509_new_ex(libctx, propq);
101 if (xi->x509 == NULL)
104 } else if ((strcmp(name, PEM_STRING_X509_TRUSTED) == 0)) {
105 d2i = (D2I_OF(void)) d2i_X509_AUX;
106 if (xi->x509 != NULL) {
107 if (!sk_X509_INFO_push(ret, xi))
109 if ((xi = X509_INFO_new()) == NULL)
113 xi->x509 = X509_new_ex(libctx, propq);
114 if (xi->x509 == NULL)
117 } else if (strcmp(name, PEM_STRING_X509_CRL) == 0) {
118 d2i = (D2I_OF(void)) d2i_X509_CRL;
119 if (xi->crl != NULL) {
120 if (!sk_X509_INFO_push(ret, xi))
122 if ((xi = X509_INFO_new()) == NULL)
128 #ifndef OPENSSL_NO_RSA
129 if (strcmp(name, PEM_STRING_RSA) == 0) {
130 d2i = (D2I_OF(void)) d2i_RSAPrivateKey;
131 if (xi->x_pkey != NULL) {
132 if (!sk_X509_INFO_push(ret, xi))
134 if ((xi = X509_INFO_new()) == NULL)
142 xi->x_pkey = X509_PKEY_new();
143 if (xi->x_pkey == NULL)
145 ptype = EVP_PKEY_RSA;
146 pp = &xi->x_pkey->dec_pkey;
147 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 PEMerr(0, ERR_R_ASN1_LIB);
216 } else if (d2i(pp, &p, len) == NULL) {
217 PEMerr(0, 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 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, 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 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, 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 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO,
323 PEM_R_UNSUPPORTED_CIPHER);
327 /* Create the right magic header stuff */
329 PEM_proc_type(buf, PEM_TYPE_ENCRYPTED);
330 PEM_dek_info(buf, objstr, EVP_CIPHER_iv_length(enc),
333 /* use the normal code to write things out */
334 i = PEM_write_bio(bp, PEM_STRING_RSA, buf, data, i);
339 #ifndef OPENSSL_NO_RSA
340 /* normal optionally encrypted stuff */
341 if (PEM_write_bio_RSAPrivateKey(bp,
342 EVP_PKEY_get0_RSA(xi->x_pkey->dec_pkey),
343 enc, kstr, klen, cb, u) <= 0)
349 /* if we have a certificate then write it out now */
350 if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp, xi->x509) <= 0))
354 * we are ignoring anything else that is loaded into the X509_INFO
355 * structure for the moment ... as I don't need it so I'm not coding it
356 * here and Eric can do it when this makes it into the base library --tjh
362 OPENSSL_cleanse(buf, PEM_BUFSIZE);