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
30 *PEM_X509_INFO_read_with_libctx(FILE *fp, STACK_OF(X509_INFO) *sk,
31 pem_password_cb *cb, void *u,
32 OPENSSL_CTX *libctx, const char *propq)
35 STACK_OF(X509_INFO) *ret;
37 if ((b = BIO_new(BIO_s_file())) == NULL) {
38 PEMerr(0, ERR_R_BUF_LIB);
41 BIO_set_fp(b, fp, BIO_NOCLOSE);
42 ret = PEM_X509_INFO_read_bio_with_libctx(b, sk, cb, u, libctx, propq);
47 STACK_OF(X509_INFO) *PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk,
48 pem_password_cb *cb, void *u)
50 return PEM_X509_INFO_read_with_libctx(fp, sk, cb, u, NULL, NULL);
55 *PEM_X509_INFO_read_bio_with_libctx(BIO *bp, STACK_OF(X509_INFO) *sk,
56 pem_password_cb *cb, void *u,
57 OPENSSL_CTX *libctx, const char *propq)
60 char *name = NULL, *header = NULL;
62 unsigned char *data = NULL;
63 const unsigned char *p;
66 STACK_OF(X509_INFO) *ret = NULL;
67 unsigned int i, raw, ptype;
71 if ((ret = sk_X509_INFO_new_null()) == NULL) {
72 PEMerr(0, ERR_R_MALLOC_FAILURE);
78 if ((xi = X509_INFO_new()) == NULL)
83 i = PEM_read_bio(bp, &name, &header, &data, &len);
85 error = ERR_GET_REASON(ERR_peek_last_error());
86 if (error == PEM_R_NO_START_LINE) {
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_with_libctx(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_with_libctx(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)
131 #ifndef OPENSSL_NO_RSA
132 if (strcmp(name, PEM_STRING_RSA) == 0) {
133 d2i = (D2I_OF(void)) d2i_RSAPrivateKey;
134 if (xi->x_pkey != NULL) {
135 if (!sk_X509_INFO_push(ret, xi))
137 if ((xi = X509_INFO_new()) == NULL)
145 xi->x_pkey = X509_PKEY_new();
146 if (xi->x_pkey == NULL)
148 ptype = EVP_PKEY_RSA;
149 pp = &xi->x_pkey->dec_pkey;
150 if ((int)strlen(header) > 10) /* assume encrypted */
154 #ifndef OPENSSL_NO_DSA
155 if (strcmp(name, PEM_STRING_DSA) == 0) {
156 d2i = (D2I_OF(void)) d2i_DSAPrivateKey;
157 if (xi->x_pkey != NULL) {
158 if (!sk_X509_INFO_push(ret, xi))
160 if ((xi = X509_INFO_new()) == NULL)
168 xi->x_pkey = X509_PKEY_new();
169 if (xi->x_pkey == NULL)
171 ptype = EVP_PKEY_DSA;
172 pp = &xi->x_pkey->dec_pkey;
173 if ((int)strlen(header) > 10) /* assume encrypted */
177 #ifndef OPENSSL_NO_EC
178 if (strcmp(name, PEM_STRING_ECPRIVATEKEY) == 0) {
179 d2i = (D2I_OF(void)) d2i_ECPrivateKey;
180 if (xi->x_pkey != NULL) {
181 if (!sk_X509_INFO_push(ret, xi))
183 if ((xi = X509_INFO_new()) == NULL)
191 xi->x_pkey = X509_PKEY_new();
192 if (xi->x_pkey == NULL)
195 pp = &xi->x_pkey->dec_pkey;
196 if ((int)strlen(header) > 10) /* assume encrypted */
207 EVP_CIPHER_INFO cipher;
209 if (!PEM_get_EVP_CIPHER_INFO(header, &cipher))
211 if (!PEM_do_header(&cipher, data, &len, cb, u))
215 if (!d2i_PrivateKey(ptype, pp, &p, len)) {
216 PEMerr(0, ERR_R_ASN1_LIB);
219 } else if (d2i(pp, &p, len) == NULL) {
220 PEMerr(0, ERR_R_ASN1_LIB);
223 } else { /* encrypted RSA data */
224 if (!PEM_get_EVP_CIPHER_INFO(header, &xi->enc_cipher))
226 xi->enc_data = (char *)data;
227 xi->enc_len = (int)len;
235 OPENSSL_free(header);
242 * if the last one hasn't been pushed yet and there is anything in it
243 * then add it to the stack ...
245 if ((xi->x509 != NULL) || (xi->crl != NULL) ||
246 (xi->x_pkey != NULL) || (xi->enc_data != NULL)) {
247 if (!sk_X509_INFO_push(ret, xi))
255 for (i = 0; ((int)i) < sk_X509_INFO_num(ret); i++) {
256 xi = sk_X509_INFO_value(ret, i);
260 sk_X509_INFO_free(ret);
265 OPENSSL_free(header);
270 STACK_OF(X509_INFO) *PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk,
271 pem_password_cb *cb, void *u)
273 return PEM_X509_INFO_read_bio_with_libctx(bp, sk, cb, u, NULL, NULL);
277 int PEM_X509_INFO_write_bio(BIO *bp, const X509_INFO *xi, EVP_CIPHER *enc,
278 const unsigned char *kstr, int klen,
279 pem_password_cb *cb, void *u)
282 unsigned char *data = NULL;
283 const char *objstr = NULL;
284 char buf[PEM_BUFSIZE];
285 const unsigned char *iv = NULL;
288 objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc));
291 * Check "Proc-Type: 4,Encrypted\nDEK-Info: objstr,hex-iv\n"
294 || (strlen(objstr) + 23 + 2 * EVP_CIPHER_iv_length(enc) + 13)
296 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, PEM_R_UNSUPPORTED_CIPHER);
302 * now for the fun part ... if we have a private key then we have to be
303 * able to handle a not-yet-decrypted key being written out correctly ...
304 * if it is decrypted or it is non-encrypted then we use the base code
306 if (xi->x_pkey != NULL) {
307 if ((xi->enc_data != NULL) && (xi->enc_len > 0)) {
309 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, PEM_R_CIPHER_IS_NULL);
313 /* copy from weirdo names into more normal things */
314 iv = xi->enc_cipher.iv;
315 data = (unsigned char *)xi->enc_data;
319 * we take the encryption data from the internal stuff rather
320 * than what the user has passed us ... as we have to match
321 * exactly for some strange reason
323 objstr = OBJ_nid2sn(EVP_CIPHER_nid(xi->enc_cipher.cipher));
324 if (objstr == NULL) {
325 PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO,
326 PEM_R_UNSUPPORTED_CIPHER);
330 /* Create the right magic header stuff */
332 PEM_proc_type(buf, PEM_TYPE_ENCRYPTED);
333 PEM_dek_info(buf, objstr, EVP_CIPHER_iv_length(enc),
336 /* use the normal code to write things out */
337 i = PEM_write_bio(bp, PEM_STRING_RSA, buf, data, i);
342 #ifndef OPENSSL_NO_RSA
343 /* normal optionally encrypted stuff */
344 if (PEM_write_bio_RSAPrivateKey(bp,
345 EVP_PKEY_get0_RSA(xi->x_pkey->dec_pkey),
346 enc, kstr, klen, cb, u) <= 0)
352 /* if we have a certificate then write it out now */
353 if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp, xi->x509) <= 0))
357 * we are ignoring anything else that is loaded into the X509_INFO
358 * structure for the moment ... as I don't need it so I'm not coding it
359 * here and Eric can do it when this makes it into the base library --tjh
365 OPENSSL_cleanse(buf, PEM_BUFSIZE);