2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999 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(!(p7bio = PKCS7_dataInit(p7, NULL))) {
101 PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE);
106 SMIME_crlf_copy(data, p7bio, flags);
108 if(!(flags & PKCS7_NOATTR)) {
109 PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
110 V_ASN1_OBJECT, OBJ_nid2obj(NID_pkcs7_data));
111 /* Add SMIMECapabilities */
112 if(!(flags & PKCS7_NOSMIMECAP))
114 if(!(smcap = sk_X509_ALGOR_new_null())) {
115 PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE);
119 PKCS7_simple_smimecap (smcap, NID_des_ede3_cbc, -1);
122 PKCS7_simple_smimecap (smcap, NID_rc2_cbc, 128);
123 PKCS7_simple_smimecap (smcap, NID_rc2_cbc, 64);
126 PKCS7_simple_smimecap (smcap, NID_des_cbc, -1);
129 PKCS7_simple_smimecap (smcap, NID_rc2_cbc, 40);
131 PKCS7_add_attrib_smimecap (si, smcap);
132 sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
136 if(flags & PKCS7_DETACHED)PKCS7_set_detached(p7, 1);
138 if (!PKCS7_dataFinal(p7,p7bio)) {
139 PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PKCS7_DATASIGN);
147 int PKCS7_verify(PKCS7 *p7, STACK_OF(X509) *certs, X509_STORE *store,
148 BIO *indata, BIO *out, int flags)
150 STACK_OF(X509) *signers;
152 STACK_OF(PKCS7_SIGNER_INFO) *sinfos;
153 PKCS7_SIGNER_INFO *si;
154 X509_STORE_CTX cert_ctx;
156 int i, j=0, k, ret = 0;
161 PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_INVALID_NULL_POINTER);
165 if(!PKCS7_type_is_signed(p7)) {
166 PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_WRONG_CONTENT_TYPE);
170 /* Check for no data and no content: no data to verify signature */
171 if(PKCS7_get_detached(p7) && !indata) {
172 PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_NO_CONTENT);
176 /* NB: this test commented out because some versions of Netscape
177 * illegally include zero length content when signing data.
180 /* Check for data and content: two sets of data */
181 if(!PKCS7_get_detached(p7) && indata) {
182 PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_CONTENT_AND_DATA_PRESENT);
187 sinfos = PKCS7_get_signer_info(p7);
189 if(!sinfos || !sk_PKCS7_SIGNER_INFO_num(sinfos)) {
190 PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_NO_SIGNATURES_ON_DATA);
195 signers = PKCS7_get0_signers(p7, certs, flags);
197 if(!signers) return 0;
199 /* Now verify the certificates */
201 if (!(flags & PKCS7_NOVERIFY)) for (k = 0; k < sk_X509_num(signers); k++) {
202 signer = sk_X509_value (signers, k);
203 if (!(flags & PKCS7_NOCHAIN)) {
204 X509_STORE_CTX_init(&cert_ctx, store, signer,
206 X509_STORE_CTX_set_purpose(&cert_ctx,
207 X509_PURPOSE_SMIME_SIGN);
208 } else X509_STORE_CTX_init (&cert_ctx, store, signer, NULL);
209 i = X509_verify_cert(&cert_ctx);
210 if (i <= 0) j = X509_STORE_CTX_get_error(&cert_ctx);
211 X509_STORE_CTX_cleanup(&cert_ctx);
213 PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_CERTIFICATE_VERIFY_ERROR);
214 ERR_add_error_data(2, "Verify error:",
215 X509_verify_cert_error_string(j));
216 sk_X509_free(signers);
219 /* Check for revocation status here */
222 p7bio=PKCS7_dataInit(p7,indata);
224 if(flags & PKCS7_TEXT) {
225 if(!(tmpout = BIO_new(BIO_s_mem()))) {
226 PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_MALLOC_FAILURE);
231 /* We now have to 'read' from p7bio to calculate digests etc. */
234 i=BIO_read(p7bio,buf,sizeof(buf));
236 if (tmpout) BIO_write(tmpout, buf, i);
239 if(flags & PKCS7_TEXT) {
240 if(!SMIME_text(tmpout, out)) {
241 PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_SMIME_TEXT_ERROR);
248 /* Now Verify All Signatures */
249 if (!(flags & PKCS7_NOSIGS))
250 for (i=0; i<sk_PKCS7_SIGNER_INFO_num(sinfos); i++)
252 si=sk_PKCS7_SIGNER_INFO_value(sinfos,i);
253 signer = sk_X509_value (signers, i);
254 j=PKCS7_signatureVerify(p7bio,p7,si, signer);
256 PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_SIGNATURE_FAILURE);
265 if(indata) BIO_pop(p7bio);
267 sk_X509_free(signers);
272 STACK_OF(X509) *PKCS7_get0_signers(PKCS7 *p7, STACK_OF(X509) *certs, int flags)
274 STACK_OF(X509) *signers;
275 STACK_OF(PKCS7_SIGNER_INFO) *sinfos;
276 PKCS7_SIGNER_INFO *si;
277 PKCS7_ISSUER_AND_SERIAL *ias;
282 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_INVALID_NULL_POINTER);
286 if(!PKCS7_type_is_signed(p7)) {
287 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_WRONG_CONTENT_TYPE);
290 if(!(signers = sk_X509_new_null())) {
291 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,ERR_R_MALLOC_FAILURE);
295 /* Collect all the signers together */
297 sinfos = PKCS7_get_signer_info(p7);
299 if(sk_PKCS7_SIGNER_INFO_num(sinfos) <= 0) {
300 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_NO_SIGNERS);
304 for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++)
306 si = sk_PKCS7_SIGNER_INFO_value(sinfos, i);
307 ias = si->issuer_and_serial;
309 /* If any certificates passed they take priority */
310 if (certs) signer = X509_find_by_issuer_and_serial (certs,
311 ias->issuer, ias->serial);
312 if (!signer && !(flags & PKCS7_NOINTERN)
313 && p7->d.sign->cert) signer =
314 X509_find_by_issuer_and_serial (p7->d.sign->cert,
315 ias->issuer, ias->serial);
317 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_SIGNER_CERTIFICATE_NOT_FOUND);
318 sk_X509_free(signers);
322 sk_X509_push(signers, signer);
328 /* Build a complete PKCS#7 enveloped data */
330 PKCS7 *PKCS7_encrypt(STACK_OF(X509) *certs, BIO *in, EVP_CIPHER *cipher,
337 if(!(p7 = PKCS7_new())) {
338 PKCS7err(PKCS7_F_PKCS7_ENCRYPT,ERR_R_MALLOC_FAILURE);
342 PKCS7_set_type(p7, NID_pkcs7_enveloped);
343 if(!PKCS7_set_cipher(p7, cipher)) {
344 PKCS7err(PKCS7_F_PKCS7_ENCRYPT,PKCS7_R_ERROR_SETTING_CIPHER);
348 for(i = 0; i < sk_X509_num(certs); i++) {
349 x509 = sk_X509_value(certs, i);
350 if(!PKCS7_add_recipient(p7, x509)) {
351 PKCS7err(PKCS7_F_PKCS7_ENCRYPT,
352 PKCS7_R_ERROR_ADDING_RECIPIENT);
357 if(!(p7bio = PKCS7_dataInit(p7, NULL))) {
358 PKCS7err(PKCS7_F_PKCS7_ENCRYPT,ERR_R_MALLOC_FAILURE);
362 SMIME_crlf_copy(in, p7bio, flags);
366 if (!PKCS7_dataFinal(p7,p7bio)) {
367 PKCS7err(PKCS7_F_PKCS7_ENCRYPT,PKCS7_R_PKCS7_DATAFINAL_ERROR);
382 int PKCS7_decrypt(PKCS7 *p7, EVP_PKEY *pkey, X509 *cert, BIO *data, int flags)
389 PKCS7err(PKCS7_F_PKCS7_DECRYPT,PKCS7_R_INVALID_NULL_POINTER);
393 if(!PKCS7_type_is_enveloped(p7)) {
394 PKCS7err(PKCS7_F_PKCS7_DECRYPT,PKCS7_R_WRONG_CONTENT_TYPE);
398 if(!X509_check_private_key(cert, pkey)) {
399 PKCS7err(PKCS7_F_PKCS7_DECRYPT,
400 PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
404 if(!(tmpmem = PKCS7_dataDecode(p7, pkey, NULL, cert))) {
405 PKCS7err(PKCS7_F_PKCS7_DECRYPT, PKCS7_R_DECRYPT_ERROR);
409 if (flags & PKCS7_TEXT) {
411 /* Encrypt BIOs can't do BIO_gets() so add a buffer BIO */
412 if(!(tmpbuf = BIO_new(BIO_f_buffer()))) {
413 PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE);
416 if(!(bread = BIO_push(tmpbuf, tmpmem))) {
417 PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE);
420 ret = SMIME_text(bread, data);
425 i = BIO_read(tmpmem, buf, sizeof(buf));
427 BIO_write(data, buf, i);
429 BIO_free_all(tmpmem);