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);