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_with_libctx(FILE *fp, STACK_OF(X509_INFO) *sk,
29 pem_password_cb *cb, void *u,
30 OPENSSL_CTX *libctx, const char *propq)
33 STACK_OF(X509_INFO) *ret;
35 if ((b = BIO_new(BIO_s_file())) == NULL) {
36 PEMerr(0, ERR_R_BUF_LIB);
39 BIO_set_fp(b, fp, BIO_NOCLOSE);
40 ret = PEM_X509_INFO_read_bio_with_libctx(b, sk, cb, u, libctx, propq);
45 STACK_OF(X509_INFO) *PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk,
46 pem_password_cb *cb, void *u)
48 return PEM_X509_INFO_read_with_libctx(fp, sk, cb, u, NULL, NULL);
53 *PEM_X509_INFO_read_bio_with_libctx(BIO *bp, STACK_OF(X509_INFO) *sk,
54 pem_password_cb *cb, void *u,
55 OPENSSL_CTX *libctx, const char *propq)
58 char *name = NULL, *header = NULL;
60 unsigned char *data = NULL;
61 const unsigned char *p;
64 STACK_OF(X509_INFO) *ret = NULL;
65 unsigned int i, raw, ptype;
69 if ((ret = sk_X509_INFO_new_null()) == NULL) {
70 PEMerr(0, ERR_R_MALLOC_FAILURE);
76 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) {
91 if ((strcmp(name, PEM_STRING_X509) == 0) ||
92 (strcmp(name, PEM_STRING_X509_OLD) == 0)) {
93 d2i = (D2I_OF(void)) d2i_X509;
94 if (xi->x509 != NULL) {
95 if (!sk_X509_INFO_push(ret, xi))
97 if ((xi = X509_INFO_new()) == NULL)
101 xi->x509 = X509_new_with_libctx(libctx, propq);
102 if (xi->x509 == NULL)
105 } else if ((strcmp(name, PEM_STRING_X509_TRUSTED) == 0)) {
106 d2i = (D2I_OF(void)) d2i_X509_AUX;
107 if (xi->x509 != NULL) {
108 if (!sk_X509_INFO_push(ret, xi))
110 if ((xi = X509_INFO_new()) == NULL)
114 xi->x509 = X509_new_with_libctx(libctx, propq);
115 if (xi->x509 == NULL)
118 } else if (strcmp(name, PEM_STRING_X509_CRL) == 0) {
119 d2i = (D2I_OF(void)) d2i_X509_CRL;
120 if (xi->crl != NULL) {
121 if (!sk_X509_INFO_push(ret, xi))
123 if ((xi = X509_INFO_new()) == NULL)
129 #ifndef OPENSSL_NO_RSA
130 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 */
152 #ifndef OPENSSL_NO_DSA
153 if (strcmp(name, PEM_STRING_DSA) == 0) {
154 d2i = (D2I_OF(void)) d2i_DSAPrivateKey;
155 if (xi->x_pkey != NULL) {
156 if (!sk_X509_INFO_push(ret, xi))
158 if ((xi = X509_INFO_new()) == NULL)
166 xi->x_pkey = X509_PKEY_new();
167 if (xi->x_pkey == NULL)
169 ptype = EVP_PKEY_DSA;
170 pp = &xi->x_pkey->dec_pkey;
171 if ((int)strlen(header) > 10) /* assume encrypted */
175 #ifndef OPENSSL_NO_EC
176 if (strcmp(name, PEM_STRING_ECPRIVATEKEY) == 0) {
177 d2i = (D2I_OF(void)) d2i_ECPrivateKey;
178 if (xi->x_pkey != NULL) {
179 if (!sk_X509_INFO_push(ret, xi))
181 if ((xi = X509_INFO_new()) == NULL)
189 xi->x_pkey = X509_PKEY_new();
190 if (xi->x_pkey == NULL)
193 pp = &xi->x_pkey->dec_pkey;
194 if ((int)strlen(header) > 10) /* assume encrypted */
205 EVP_CIPHER_INFO cipher;
207 if (!PEM_get_EVP_CIPHER_INFO(header, &cipher))
209 if (!PEM_do_header(&cipher, data, &len, cb, u))
213 if (!d2i_PrivateKey(ptype, pp, &p, len)) {
214 PEMerr(0, ERR_R_ASN1_LIB);
217 } else if (d2i(pp, &p, len) == NULL) {
218 PEMerr(0, ERR_R_ASN1_LIB);
221 } else { /* encrypted RSA data */
222 if (!PEM_get_EVP_CIPHER_INFO(header, &xi->enc_cipher))
224 xi->enc_data = (char *)data;
225 xi->enc_len = (int)len;
233 OPENSSL_free(header);
240 * if the last one hasn't been pushed yet and there is anything in it
241 * then add it to the stack ...
243 if ((xi->x509 != NULL) || (xi->crl != NULL) ||
244 (xi->x_pkey != NULL) || (xi->enc_data != NULL)) {
245 if (!sk_X509_INFO_push(ret, xi))
253 for (i = 0; ((int)i) < sk_X509_INFO_num(ret); i++) {
254 xi = sk_X509_INFO_value(ret, i);
258 sk_X509_INFO_free(ret);
263 OPENSSL_free(header);
268 STACK_OF(X509_INFO) *PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk,
269 pem_password_cb *cb, void *u)
271 return PEM_X509_INFO_read_bio_with_libctx(bp, sk, cb, u, NULL, NULL);
275 int PEM_X509_INFO_write_bio(BIO *bp, const X509_INFO *xi, EVP_CIPHER *enc,
276 const unsigned char *kstr, int klen,
277 pem_password_cb *cb, void *u)
280 unsigned char *data = NULL;
281 const char *objstr = NULL;
282 char buf[PEM_BUFSIZE];
283 const unsigned char *iv = NULL;
286 objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc));
289 * Check "Proc-Type: 4,Encrypted\nDEK-Info: objstr,hex-iv\n"
292 || (strlen(objstr) + 23 + 2 * EVP_CIPHER_iv_length(enc) + 13)
294 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, PEM_R_UNSUPPORTED_CIPHER);
300 * now for the fun part ... if we have a private key then we have to be
301 * able to handle a not-yet-decrypted key being written out correctly ...
302 * if it is decrypted or it is non-encrypted then we use the base code
304 if (xi->x_pkey != NULL) {
305 if ((xi->enc_data != NULL) && (xi->enc_len > 0)) {
307 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, PEM_R_CIPHER_IS_NULL);
311 /* copy from weirdo names into more normal things */
312 iv = xi->enc_cipher.iv;
313 data = (unsigned char *)xi->enc_data;
317 * we take the encryption data from the internal stuff rather
318 * than what the user has passed us ... as we have to match
319 * exactly for some strange reason
321 objstr = OBJ_nid2sn(EVP_CIPHER_nid(xi->enc_cipher.cipher));
322 if (objstr == NULL) {
323 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO,
324 PEM_R_UNSUPPORTED_CIPHER);
328 /* Create the right magic header stuff */
330 PEM_proc_type(buf, PEM_TYPE_ENCRYPTED);
331 PEM_dek_info(buf, objstr, EVP_CIPHER_iv_length(enc),
334 /* use the normal code to write things out */
335 i = PEM_write_bio(bp, PEM_STRING_RSA, buf, data, i);
340 #ifndef OPENSSL_NO_RSA
341 /* normal optionally encrypted stuff */
342 if (PEM_write_bio_RSAPrivateKey(bp,
343 EVP_PKEY_get0_RSA(xi->x_pkey->dec_pkey),
344 enc, kstr, klen, cb, u) <= 0)
350 /* if we have a certificate then write it out now */
351 if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp, xi->x509) <= 0))
355 * we are ignoring anything else that is loaded into the X509_INFO
356 * structure for the moment ... as I don't need it so I'm not coding it
357 * here and Eric can do it when this makes it into the base library --tjh
363 OPENSSL_cleanse(buf, PEM_BUFSIZE);