2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999-2004 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
59 /* Simple PKCS#7 processing functions */
63 #include <openssl/x509.h>
64 #include <openssl/x509v3.h>
66 PKCS7
*PKCS7_sign(X509
*signcert
, EVP_PKEY
*pkey
, STACK_OF(X509
) *certs
,
70 PKCS7_SIGNER_INFO
*si
;
72 STACK_OF(X509_ALGOR
) *smcap
= NULL
;
75 if(!X509_check_private_key(signcert
, pkey
)) {
76 PKCS7err(PKCS7_F_PKCS7_SIGN
,PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE
);
80 if(!(p7
= PKCS7_new())) {
81 PKCS7err(PKCS7_F_PKCS7_SIGN
,ERR_R_MALLOC_FAILURE
);
85 if (!PKCS7_set_type(p7
, NID_pkcs7_signed
))
88 if (!PKCS7_content_new(p7
, NID_pkcs7_data
))
91 if (!(si
= PKCS7_add_signature(p7
,signcert
,pkey
,EVP_sha1()))) {
92 PKCS7err(PKCS7_F_PKCS7_SIGN
,PKCS7_R_PKCS7_ADD_SIGNATURE_ERROR
);
96 if(!(flags
& PKCS7_NOCERTS
)) {
97 if (!PKCS7_add_certificate(p7
, signcert
))
99 if(certs
) for(i
= 0; i
< sk_X509_num(certs
); i
++)
100 if (!PKCS7_add_certificate(p7
, sk_X509_value(certs
, i
)))
104 if(!(flags
& PKCS7_NOATTR
)) {
105 if (!PKCS7_add_signed_attribute(si
, NID_pkcs9_contentType
,
106 V_ASN1_OBJECT
, OBJ_nid2obj(NID_pkcs7_data
)))
108 /* Add SMIMECapabilities */
109 if(!(flags
& PKCS7_NOSMIMECAP
))
111 if(!(smcap
= sk_X509_ALGOR_new_null())) {
112 PKCS7err(PKCS7_F_PKCS7_SIGN
,ERR_R_MALLOC_FAILURE
);
115 #ifndef OPENSSL_NO_DES
116 if (!PKCS7_simple_smimecap (smcap
, NID_des_ede3_cbc
, -1))
119 #ifndef OPENSSL_NO_RC2
120 if (!PKCS7_simple_smimecap (smcap
, NID_rc2_cbc
, 128))
122 if (!PKCS7_simple_smimecap (smcap
, NID_rc2_cbc
, 64))
125 #ifndef OPENSSL_NO_DES
126 if (!PKCS7_simple_smimecap (smcap
, NID_des_cbc
, -1))
129 #ifndef OPENSSL_NO_RC2
130 if (!PKCS7_simple_smimecap (smcap
, NID_rc2_cbc
, 40))
133 if (!PKCS7_add_attrib_smimecap (si
, smcap
))
135 sk_X509_ALGOR_pop_free(smcap
, X509_ALGOR_free
);
140 if(flags
& PKCS7_DETACHED
)PKCS7_set_detached(p7
, 1);
142 if (flags
& PKCS7_STREAM
)
146 if (!(p7bio
= PKCS7_dataInit(p7
, NULL
))) {
147 PKCS7err(PKCS7_F_PKCS7_SIGN
,ERR_R_MALLOC_FAILURE
);
151 SMIME_crlf_copy(data
, p7bio
, flags
);
154 if (!PKCS7_dataFinal(p7
,p7bio
)) {
155 PKCS7err(PKCS7_F_PKCS7_SIGN
,PKCS7_R_PKCS7_DATASIGN
);
162 sk_X509_ALGOR_pop_free(smcap
, X509_ALGOR_free
);
168 int PKCS7_verify(PKCS7
*p7
, STACK_OF(X509
) *certs
, X509_STORE
*store
,
169 BIO
*indata
, BIO
*out
, int flags
)
171 STACK_OF(X509
) *signers
;
173 STACK_OF(PKCS7_SIGNER_INFO
) *sinfos
;
174 PKCS7_SIGNER_INFO
*si
;
175 X509_STORE_CTX cert_ctx
;
177 int i
, j
=0, k
, ret
= 0;
182 PKCS7err(PKCS7_F_PKCS7_VERIFY
,PKCS7_R_INVALID_NULL_POINTER
);
186 if(!PKCS7_type_is_signed(p7
)) {
187 PKCS7err(PKCS7_F_PKCS7_VERIFY
,PKCS7_R_WRONG_CONTENT_TYPE
);
191 /* Check for no data and no content: no data to verify signature */
192 if(PKCS7_get_detached(p7
) && !indata
) {
193 PKCS7err(PKCS7_F_PKCS7_VERIFY
,PKCS7_R_NO_CONTENT
);
197 /* NB: this test commented out because some versions of Netscape
198 * illegally include zero length content when signing data.
201 /* Check for data and content: two sets of data */
202 if(!PKCS7_get_detached(p7
) && indata
) {
203 PKCS7err(PKCS7_F_PKCS7_VERIFY
,PKCS7_R_CONTENT_AND_DATA_PRESENT
);
208 sinfos
= PKCS7_get_signer_info(p7
);
210 if(!sinfos
|| !sk_PKCS7_SIGNER_INFO_num(sinfos
)) {
211 PKCS7err(PKCS7_F_PKCS7_VERIFY
,PKCS7_R_NO_SIGNATURES_ON_DATA
);
216 signers
= PKCS7_get0_signers(p7
, certs
, flags
);
218 if(!signers
) return 0;
220 /* Now verify the certificates */
222 if (!(flags
& PKCS7_NOVERIFY
)) for (k
= 0; k
< sk_X509_num(signers
); k
++) {
223 signer
= sk_X509_value (signers
, k
);
224 if (!(flags
& PKCS7_NOCHAIN
)) {
225 if(!X509_STORE_CTX_init(&cert_ctx
, store
, signer
,
228 PKCS7err(PKCS7_F_PKCS7_VERIFY
,ERR_R_X509_LIB
);
229 sk_X509_free(signers
);
232 X509_STORE_CTX_set_purpose(&cert_ctx
,
233 X509_PURPOSE_SMIME_SIGN
);
234 } else if(!X509_STORE_CTX_init (&cert_ctx
, store
, signer
, NULL
)) {
235 PKCS7err(PKCS7_F_PKCS7_VERIFY
,ERR_R_X509_LIB
);
236 sk_X509_free(signers
);
239 if (!(flags
& PKCS7_NOCRL
))
240 X509_STORE_CTX_set0_crls(&cert_ctx
, p7
->d
.sign
->crl
);
241 i
= X509_verify_cert(&cert_ctx
);
242 if (i
<= 0) j
= X509_STORE_CTX_get_error(&cert_ctx
);
243 X509_STORE_CTX_cleanup(&cert_ctx
);
245 PKCS7err(PKCS7_F_PKCS7_VERIFY
,PKCS7_R_CERTIFICATE_VERIFY_ERROR
);
246 ERR_add_error_data(2, "Verify error:",
247 X509_verify_cert_error_string(j
));
248 sk_X509_free(signers
);
251 /* Check for revocation status here */
254 /* Performance optimization: if the content is a memory BIO then
255 * store its contents in a temporary read only memory BIO. This
256 * avoids potentially large numbers of slow copies of data which will
257 * occur when reading from a read write memory BIO when signatures
261 if (indata
&& (BIO_method_type(indata
) == BIO_TYPE_MEM
))
265 len
= BIO_get_mem_data(indata
, &ptr
);
266 tmpin
= BIO_new_mem_buf(ptr
, len
);
269 PKCS7err(PKCS7_F_PKCS7_VERIFY
,ERR_R_MALLOC_FAILURE
);
277 if (!(p7bio
=PKCS7_dataInit(p7
,tmpin
)))
280 if(flags
& PKCS7_TEXT
) {
281 if(!(tmpout
= BIO_new(BIO_s_mem()))) {
282 PKCS7err(PKCS7_F_PKCS7_VERIFY
,ERR_R_MALLOC_FAILURE
);
287 /* We now have to 'read' from p7bio to calculate digests etc. */
290 i
=BIO_read(p7bio
,buf
,sizeof(buf
));
292 if (tmpout
) BIO_write(tmpout
, buf
, i
);
295 if(flags
& PKCS7_TEXT
) {
296 if(!SMIME_text(tmpout
, out
)) {
297 PKCS7err(PKCS7_F_PKCS7_VERIFY
,PKCS7_R_SMIME_TEXT_ERROR
);
304 /* Now Verify All Signatures */
305 if (!(flags
& PKCS7_NOSIGS
))
306 for (i
=0; i
<sk_PKCS7_SIGNER_INFO_num(sinfos
); i
++)
308 si
=sk_PKCS7_SIGNER_INFO_value(sinfos
,i
);
309 signer
= sk_X509_value (signers
, i
);
310 j
=PKCS7_signatureVerify(p7bio
,p7
,si
, signer
);
312 PKCS7err(PKCS7_F_PKCS7_VERIFY
,PKCS7_R_SIGNATURE_FAILURE
);
323 if (indata
) BIO_pop(p7bio
);
327 sk_X509_free(signers
);
332 STACK_OF(X509
) *PKCS7_get0_signers(PKCS7
*p7
, STACK_OF(X509
) *certs
, int flags
)
334 STACK_OF(X509
) *signers
;
335 STACK_OF(PKCS7_SIGNER_INFO
) *sinfos
;
336 PKCS7_SIGNER_INFO
*si
;
337 PKCS7_ISSUER_AND_SERIAL
*ias
;
342 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS
,PKCS7_R_INVALID_NULL_POINTER
);
346 if(!PKCS7_type_is_signed(p7
)) {
347 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS
,PKCS7_R_WRONG_CONTENT_TYPE
);
351 /* Collect all the signers together */
353 sinfos
= PKCS7_get_signer_info(p7
);
355 if(sk_PKCS7_SIGNER_INFO_num(sinfos
) <= 0) {
356 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS
,PKCS7_R_NO_SIGNERS
);
360 if(!(signers
= sk_X509_new_null())) {
361 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS
,ERR_R_MALLOC_FAILURE
);
365 for (i
= 0; i
< sk_PKCS7_SIGNER_INFO_num(sinfos
); i
++)
367 si
= sk_PKCS7_SIGNER_INFO_value(sinfos
, i
);
368 ias
= si
->issuer_and_serial
;
370 /* If any certificates passed they take priority */
371 if (certs
) signer
= X509_find_by_issuer_and_serial (certs
,
372 ias
->issuer
, ias
->serial
);
373 if (!signer
&& !(flags
& PKCS7_NOINTERN
)
374 && p7
->d
.sign
->cert
) signer
=
375 X509_find_by_issuer_and_serial (p7
->d
.sign
->cert
,
376 ias
->issuer
, ias
->serial
);
378 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS
,PKCS7_R_SIGNER_CERTIFICATE_NOT_FOUND
);
379 sk_X509_free(signers
);
383 if (!sk_X509_push(signers
, signer
)) {
384 sk_X509_free(signers
);
392 /* Build a complete PKCS#7 enveloped data */
394 PKCS7
*PKCS7_encrypt(STACK_OF(X509
) *certs
, BIO
*in
, const EVP_CIPHER
*cipher
,
401 if(!(p7
= PKCS7_new())) {
402 PKCS7err(PKCS7_F_PKCS7_ENCRYPT
,ERR_R_MALLOC_FAILURE
);
406 if (!PKCS7_set_type(p7
, NID_pkcs7_enveloped
))
408 if(!PKCS7_set_cipher(p7
, cipher
)) {
409 PKCS7err(PKCS7_F_PKCS7_ENCRYPT
,PKCS7_R_ERROR_SETTING_CIPHER
);
413 for(i
= 0; i
< sk_X509_num(certs
); i
++) {
414 x509
= sk_X509_value(certs
, i
);
415 if(!PKCS7_add_recipient(p7
, x509
)) {
416 PKCS7err(PKCS7_F_PKCS7_ENCRYPT
,
417 PKCS7_R_ERROR_ADDING_RECIPIENT
);
422 if(!(p7bio
= PKCS7_dataInit(p7
, NULL
))) {
423 PKCS7err(PKCS7_F_PKCS7_ENCRYPT
,ERR_R_MALLOC_FAILURE
);
427 SMIME_crlf_copy(in
, p7bio
, flags
);
429 (void)BIO_flush(p7bio
);
431 if (!PKCS7_dataFinal(p7
,p7bio
)) {
432 PKCS7err(PKCS7_F_PKCS7_ENCRYPT
,PKCS7_R_PKCS7_DATAFINAL_ERROR
);
447 int PKCS7_decrypt(PKCS7
*p7
, EVP_PKEY
*pkey
, X509
*cert
, BIO
*data
, int flags
)
454 PKCS7err(PKCS7_F_PKCS7_DECRYPT
,PKCS7_R_INVALID_NULL_POINTER
);
458 if(!PKCS7_type_is_enveloped(p7
)) {
459 PKCS7err(PKCS7_F_PKCS7_DECRYPT
,PKCS7_R_WRONG_CONTENT_TYPE
);
463 if(cert
&& !X509_check_private_key(cert
, pkey
)) {
464 PKCS7err(PKCS7_F_PKCS7_DECRYPT
,
465 PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE
);
469 if(!(tmpmem
= PKCS7_dataDecode(p7
, pkey
, NULL
, cert
))) {
470 PKCS7err(PKCS7_F_PKCS7_DECRYPT
, PKCS7_R_DECRYPT_ERROR
);
474 if (flags
& PKCS7_TEXT
) {
476 /* Encrypt BIOs can't do BIO_gets() so add a buffer BIO */
477 if(!(tmpbuf
= BIO_new(BIO_f_buffer()))) {
478 PKCS7err(PKCS7_F_PKCS7_DECRYPT
, ERR_R_MALLOC_FAILURE
);
479 BIO_free_all(tmpmem
);
482 if(!(bread
= BIO_push(tmpbuf
, tmpmem
))) {
483 PKCS7err(PKCS7_F_PKCS7_DECRYPT
, ERR_R_MALLOC_FAILURE
);
484 BIO_free_all(tmpbuf
);
485 BIO_free_all(tmpmem
);
488 ret
= SMIME_text(bread
, data
);
493 i
= BIO_read(tmpmem
, buf
, sizeof(buf
));
495 BIO_write(data
, buf
, i
);
497 BIO_free_all(tmpmem
);