2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999-2003 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
;
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 PKCS7_set_type(p7
, NID_pkcs7_signed
);
87 PKCS7_content_new(p7
, NID_pkcs7_data
);
89 if (!(si
= PKCS7_add_signature(p7
,signcert
,pkey
,EVP_sha1()))) {
90 PKCS7err(PKCS7_F_PKCS7_SIGN
,PKCS7_R_PKCS7_ADD_SIGNATURE_ERROR
);
94 if(!(flags
& PKCS7_NOCERTS
)) {
95 PKCS7_add_certificate(p7
, signcert
);
96 if(certs
) for(i
= 0; i
< sk_X509_num(certs
); i
++)
97 PKCS7_add_certificate(p7
, sk_X509_value(certs
, i
));
100 if(!(flags
& PKCS7_NOATTR
)) {
101 PKCS7_add_signed_attribute(si
, NID_pkcs9_contentType
,
102 V_ASN1_OBJECT
, OBJ_nid2obj(NID_pkcs7_data
));
103 /* Add SMIMECapabilities */
104 if(!(flags
& PKCS7_NOSMIMECAP
))
106 if(!(smcap
= sk_X509_ALGOR_new_null())) {
107 PKCS7err(PKCS7_F_PKCS7_SIGN
,ERR_R_MALLOC_FAILURE
);
110 #ifndef OPENSSL_NO_DES
111 PKCS7_simple_smimecap (smcap
, NID_des_ede3_cbc
, -1);
113 #ifndef OPENSSL_NO_RC2
114 PKCS7_simple_smimecap (smcap
, NID_rc2_cbc
, 128);
115 PKCS7_simple_smimecap (smcap
, NID_rc2_cbc
, 64);
117 #ifndef OPENSSL_NO_DES
118 PKCS7_simple_smimecap (smcap
, NID_des_cbc
, -1);
120 #ifndef OPENSSL_NO_RC2
121 PKCS7_simple_smimecap (smcap
, NID_rc2_cbc
, 40);
123 PKCS7_add_attrib_smimecap (si
, smcap
);
124 sk_X509_ALGOR_pop_free(smcap
, X509_ALGOR_free
);
128 if (flags
& PKCS7_PARTSIGN
)
131 if (!(p7bio
= PKCS7_dataInit(p7
, NULL
))) {
132 PKCS7err(PKCS7_F_PKCS7_SIGN
,ERR_R_MALLOC_FAILURE
);
136 SMIME_crlf_copy(data
, p7bio
, flags
);
138 if(flags
& PKCS7_DETACHED
)PKCS7_set_detached(p7
, 1);
140 if (!PKCS7_dataFinal(p7
,p7bio
)) {
141 PKCS7err(PKCS7_F_PKCS7_SIGN
,PKCS7_R_PKCS7_DATASIGN
);
149 int PKCS7_verify(PKCS7
*p7
, STACK_OF(X509
) *certs
, X509_STORE
*store
,
150 BIO
*indata
, BIO
*out
, int flags
)
152 STACK_OF(X509
) *signers
;
154 STACK_OF(PKCS7_SIGNER_INFO
) *sinfos
;
155 PKCS7_SIGNER_INFO
*si
;
156 X509_STORE_CTX cert_ctx
;
158 int i
, j
=0, k
, ret
= 0;
163 PKCS7err(PKCS7_F_PKCS7_VERIFY
,PKCS7_R_INVALID_NULL_POINTER
);
167 if(!PKCS7_type_is_signed(p7
)) {
168 PKCS7err(PKCS7_F_PKCS7_VERIFY
,PKCS7_R_WRONG_CONTENT_TYPE
);
172 /* Check for no data and no content: no data to verify signature */
173 if(PKCS7_get_detached(p7
) && !indata
) {
174 PKCS7err(PKCS7_F_PKCS7_VERIFY
,PKCS7_R_NO_CONTENT
);
178 /* NB: this test commented out because some versions of Netscape
179 * illegally include zero length content when signing data.
182 /* Check for data and content: two sets of data */
183 if(!PKCS7_get_detached(p7
) && indata
) {
184 PKCS7err(PKCS7_F_PKCS7_VERIFY
,PKCS7_R_CONTENT_AND_DATA_PRESENT
);
189 sinfos
= PKCS7_get_signer_info(p7
);
191 if(!sinfos
|| !sk_PKCS7_SIGNER_INFO_num(sinfos
)) {
192 PKCS7err(PKCS7_F_PKCS7_VERIFY
,PKCS7_R_NO_SIGNATURES_ON_DATA
);
197 signers
= PKCS7_get0_signers(p7
, certs
, flags
);
199 if(!signers
) return 0;
201 /* Now verify the certificates */
203 if (!(flags
& PKCS7_NOVERIFY
)) for (k
= 0; k
< sk_X509_num(signers
); k
++) {
204 signer
= sk_X509_value (signers
, k
);
205 if (!(flags
& PKCS7_NOCHAIN
)) {
206 if(!X509_STORE_CTX_init(&cert_ctx
, store
, signer
,
209 PKCS7err(PKCS7_F_PKCS7_VERIFY
,ERR_R_X509_LIB
);
210 sk_X509_free(signers
);
213 X509_STORE_CTX_set_purpose(&cert_ctx
,
214 X509_PURPOSE_SMIME_SIGN
);
215 } else if(!X509_STORE_CTX_init (&cert_ctx
, store
, signer
, NULL
)) {
216 PKCS7err(PKCS7_F_PKCS7_VERIFY
,ERR_R_X509_LIB
);
217 sk_X509_free(signers
);
220 i
= X509_verify_cert(&cert_ctx
);
221 if (i
<= 0) j
= X509_STORE_CTX_get_error(&cert_ctx
);
222 X509_STORE_CTX_cleanup(&cert_ctx
);
224 PKCS7err(PKCS7_F_PKCS7_VERIFY
,PKCS7_R_CERTIFICATE_VERIFY_ERROR
);
225 ERR_add_error_data(2, "Verify error:",
226 X509_verify_cert_error_string(j
));
227 sk_X509_free(signers
);
230 /* Check for revocation status here */
233 p7bio
=PKCS7_dataInit(p7
,indata
);
235 if(flags
& PKCS7_TEXT
) {
236 if(!(tmpout
= BIO_new(BIO_s_mem()))) {
237 PKCS7err(PKCS7_F_PKCS7_VERIFY
,ERR_R_MALLOC_FAILURE
);
242 /* We now have to 'read' from p7bio to calculate digests etc. */
245 i
=BIO_read(p7bio
,buf
,sizeof(buf
));
247 if (tmpout
) BIO_write(tmpout
, buf
, i
);
250 if(flags
& PKCS7_TEXT
) {
251 if(!SMIME_text(tmpout
, out
)) {
252 PKCS7err(PKCS7_F_PKCS7_VERIFY
,PKCS7_R_SMIME_TEXT_ERROR
);
259 /* Now Verify All Signatures */
260 if (!(flags
& PKCS7_NOSIGS
))
261 for (i
=0; i
<sk_PKCS7_SIGNER_INFO_num(sinfos
); i
++)
263 si
=sk_PKCS7_SIGNER_INFO_value(sinfos
,i
);
264 signer
= sk_X509_value (signers
, i
);
265 j
=PKCS7_signatureVerify(p7bio
,p7
,si
, signer
);
267 PKCS7err(PKCS7_F_PKCS7_VERIFY
,PKCS7_R_SIGNATURE_FAILURE
);
276 if(indata
) BIO_pop(p7bio
);
278 sk_X509_free(signers
);
283 STACK_OF(X509
) *PKCS7_get0_signers(PKCS7
*p7
, STACK_OF(X509
) *certs
, int flags
)
285 STACK_OF(X509
) *signers
;
286 STACK_OF(PKCS7_SIGNER_INFO
) *sinfos
;
287 PKCS7_SIGNER_INFO
*si
;
288 PKCS7_ISSUER_AND_SERIAL
*ias
;
293 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS
,PKCS7_R_INVALID_NULL_POINTER
);
297 if(!PKCS7_type_is_signed(p7
)) {
298 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS
,PKCS7_R_WRONG_CONTENT_TYPE
);
301 if(!(signers
= sk_X509_new_null())) {
302 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS
,ERR_R_MALLOC_FAILURE
);
306 /* Collect all the signers together */
308 sinfos
= PKCS7_get_signer_info(p7
);
310 if(sk_PKCS7_SIGNER_INFO_num(sinfos
) <= 0) {
311 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS
,PKCS7_R_NO_SIGNERS
);
315 for (i
= 0; i
< sk_PKCS7_SIGNER_INFO_num(sinfos
); i
++)
317 si
= sk_PKCS7_SIGNER_INFO_value(sinfos
, i
);
318 ias
= si
->issuer_and_serial
;
320 /* If any certificates passed they take priority */
321 if (certs
) signer
= X509_find_by_issuer_and_serial (certs
,
322 ias
->issuer
, ias
->serial
);
323 if (!signer
&& !(flags
& PKCS7_NOINTERN
)
324 && p7
->d
.sign
->cert
) signer
=
325 X509_find_by_issuer_and_serial (p7
->d
.sign
->cert
,
326 ias
->issuer
, ias
->serial
);
328 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS
,PKCS7_R_SIGNER_CERTIFICATE_NOT_FOUND
);
329 sk_X509_free(signers
);
333 sk_X509_push(signers
, signer
);
339 /* Build a complete PKCS#7 enveloped data */
341 PKCS7
*PKCS7_encrypt(STACK_OF(X509
) *certs
, BIO
*in
, const EVP_CIPHER
*cipher
,
348 if(!(p7
= PKCS7_new())) {
349 PKCS7err(PKCS7_F_PKCS7_ENCRYPT
,ERR_R_MALLOC_FAILURE
);
353 PKCS7_set_type(p7
, NID_pkcs7_enveloped
);
354 if(!PKCS7_set_cipher(p7
, cipher
)) {
355 PKCS7err(PKCS7_F_PKCS7_ENCRYPT
,PKCS7_R_ERROR_SETTING_CIPHER
);
359 for(i
= 0; i
< sk_X509_num(certs
); i
++) {
360 x509
= sk_X509_value(certs
, i
);
361 if(!PKCS7_add_recipient(p7
, x509
)) {
362 PKCS7err(PKCS7_F_PKCS7_ENCRYPT
,
363 PKCS7_R_ERROR_ADDING_RECIPIENT
);
368 if(!(p7bio
= PKCS7_dataInit(p7
, NULL
))) {
369 PKCS7err(PKCS7_F_PKCS7_ENCRYPT
,ERR_R_MALLOC_FAILURE
);
373 SMIME_crlf_copy(in
, p7bio
, flags
);
377 if (!PKCS7_dataFinal(p7
,p7bio
)) {
378 PKCS7err(PKCS7_F_PKCS7_ENCRYPT
,PKCS7_R_PKCS7_DATAFINAL_ERROR
);
393 int PKCS7_decrypt(PKCS7
*p7
, EVP_PKEY
*pkey
, X509
*cert
, BIO
*data
, int flags
)
400 PKCS7err(PKCS7_F_PKCS7_DECRYPT
,PKCS7_R_INVALID_NULL_POINTER
);
404 if(!PKCS7_type_is_enveloped(p7
)) {
405 PKCS7err(PKCS7_F_PKCS7_DECRYPT
,PKCS7_R_WRONG_CONTENT_TYPE
);
409 if(!X509_check_private_key(cert
, pkey
)) {
410 PKCS7err(PKCS7_F_PKCS7_DECRYPT
,
411 PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE
);
415 if(!(tmpmem
= PKCS7_dataDecode(p7
, pkey
, NULL
, cert
))) {
416 PKCS7err(PKCS7_F_PKCS7_DECRYPT
, PKCS7_R_DECRYPT_ERROR
);
420 if (flags
& PKCS7_TEXT
) {
422 /* Encrypt BIOs can't do BIO_gets() so add a buffer BIO */
423 if(!(tmpbuf
= BIO_new(BIO_f_buffer()))) {
424 PKCS7err(PKCS7_F_PKCS7_DECRYPT
, ERR_R_MALLOC_FAILURE
);
427 if(!(bread
= BIO_push(tmpbuf
, tmpmem
))) {
428 PKCS7err(PKCS7_F_PKCS7_DECRYPT
, ERR_R_MALLOC_FAILURE
);
431 ret
= SMIME_text(bread
, data
);
436 i
= BIO_read(tmpmem
, buf
, sizeof(buf
));
438 BIO_write(data
, buf
, i
);
440 BIO_free_all(tmpmem
);