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;
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_STREAM)
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 if (!(flags & PKCS7_NOCRL))
221 X509_STORE_CTX_set0_crls(&cert_ctx, p7->d.sign->crl);
222 i = X509_verify_cert(&cert_ctx);
223 if (i <= 0) j = X509_STORE_CTX_get_error(&cert_ctx);
224 X509_STORE_CTX_cleanup(&cert_ctx);
226 PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_CERTIFICATE_VERIFY_ERROR);
227 ERR_add_error_data(2, "Verify error:",
228 X509_verify_cert_error_string(j));
229 sk_X509_free(signers);
232 /* Check for revocation status here */
235 /* Performance optimization: if the content is a memory BIO then
236 * store its contents in a temporary read only memory BIO. This
237 * avoids potentially large numbers of slow copies of data which will
238 * occur when reading from a read write memory BIO when signatures
242 if (indata && (BIO_method_type(indata) == BIO_TYPE_MEM))
246 len = BIO_get_mem_data(indata, &ptr);
247 tmpin = BIO_new_mem_buf(ptr, len);
250 PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_MALLOC_FAILURE);
258 p7bio=PKCS7_dataInit(p7,tmpin);
260 if(flags & PKCS7_TEXT) {
261 if(!(tmpout = BIO_new(BIO_s_mem()))) {
262 PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_MALLOC_FAILURE);
267 /* We now have to 'read' from p7bio to calculate digests etc. */
270 i=BIO_read(p7bio,buf,sizeof(buf));
272 if (tmpout) BIO_write(tmpout, buf, i);
275 if(flags & PKCS7_TEXT) {
276 if(!SMIME_text(tmpout, out)) {
277 PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_SMIME_TEXT_ERROR);
284 /* Now Verify All Signatures */
285 if (!(flags & PKCS7_NOSIGS))
286 for (i=0; i<sk_PKCS7_SIGNER_INFO_num(sinfos); i++)
288 si=sk_PKCS7_SIGNER_INFO_value(sinfos,i);
289 signer = sk_X509_value (signers, i);
290 j=PKCS7_signatureVerify(p7bio,p7,si, signer);
292 PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_SIGNATURE_FAILURE);
303 if (indata) BIO_pop(p7bio);
307 sk_X509_free(signers);
312 STACK_OF(X509) *PKCS7_get0_signers(PKCS7 *p7, STACK_OF(X509) *certs, int flags)
314 STACK_OF(X509) *signers;
315 STACK_OF(PKCS7_SIGNER_INFO) *sinfos;
316 PKCS7_SIGNER_INFO *si;
317 PKCS7_ISSUER_AND_SERIAL *ias;
322 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_INVALID_NULL_POINTER);
326 if(!PKCS7_type_is_signed(p7)) {
327 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_WRONG_CONTENT_TYPE);
331 /* Collect all the signers together */
333 sinfos = PKCS7_get_signer_info(p7);
335 if(sk_PKCS7_SIGNER_INFO_num(sinfos) <= 0) {
336 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_NO_SIGNERS);
340 if(!(signers = sk_X509_new_null())) {
341 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,ERR_R_MALLOC_FAILURE);
345 for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++)
347 si = sk_PKCS7_SIGNER_INFO_value(sinfos, i);
348 ias = si->issuer_and_serial;
350 /* If any certificates passed they take priority */
351 if (certs) signer = X509_find_by_issuer_and_serial (certs,
352 ias->issuer, ias->serial);
353 if (!signer && !(flags & PKCS7_NOINTERN)
354 && p7->d.sign->cert) signer =
355 X509_find_by_issuer_and_serial (p7->d.sign->cert,
356 ias->issuer, ias->serial);
358 PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_SIGNER_CERTIFICATE_NOT_FOUND);
359 sk_X509_free(signers);
363 sk_X509_push(signers, signer);
369 /* Build a complete PKCS#7 enveloped data */
371 PKCS7 *PKCS7_encrypt(STACK_OF(X509) *certs, BIO *in, const EVP_CIPHER *cipher,
378 if(!(p7 = PKCS7_new())) {
379 PKCS7err(PKCS7_F_PKCS7_ENCRYPT,ERR_R_MALLOC_FAILURE);
383 PKCS7_set_type(p7, NID_pkcs7_enveloped);
384 if(!PKCS7_set_cipher(p7, cipher)) {
385 PKCS7err(PKCS7_F_PKCS7_ENCRYPT,PKCS7_R_ERROR_SETTING_CIPHER);
389 for(i = 0; i < sk_X509_num(certs); i++) {
390 x509 = sk_X509_value(certs, i);
391 if(!PKCS7_add_recipient(p7, x509)) {
392 PKCS7err(PKCS7_F_PKCS7_ENCRYPT,
393 PKCS7_R_ERROR_ADDING_RECIPIENT);
398 if(!(p7bio = PKCS7_dataInit(p7, NULL))) {
399 PKCS7err(PKCS7_F_PKCS7_ENCRYPT,ERR_R_MALLOC_FAILURE);
403 SMIME_crlf_copy(in, p7bio, flags);
407 if (!PKCS7_dataFinal(p7,p7bio)) {
408 PKCS7err(PKCS7_F_PKCS7_ENCRYPT,PKCS7_R_PKCS7_DATAFINAL_ERROR);
423 int PKCS7_decrypt(PKCS7 *p7, EVP_PKEY *pkey, X509 *cert, BIO *data, int flags)
430 PKCS7err(PKCS7_F_PKCS7_DECRYPT,PKCS7_R_INVALID_NULL_POINTER);
434 if(!PKCS7_type_is_enveloped(p7)) {
435 PKCS7err(PKCS7_F_PKCS7_DECRYPT,PKCS7_R_WRONG_CONTENT_TYPE);
439 if(!X509_check_private_key(cert, pkey)) {
440 PKCS7err(PKCS7_F_PKCS7_DECRYPT,
441 PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
445 if(!(tmpmem = PKCS7_dataDecode(p7, pkey, NULL, cert))) {
446 PKCS7err(PKCS7_F_PKCS7_DECRYPT, PKCS7_R_DECRYPT_ERROR);
450 if (flags & PKCS7_TEXT) {
452 /* Encrypt BIOs can't do BIO_gets() so add a buffer BIO */
453 if(!(tmpbuf = BIO_new(BIO_f_buffer()))) {
454 PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE);
457 if(!(bread = BIO_push(tmpbuf, tmpmem))) {
458 PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE);
461 ret = SMIME_text(bread, data);
466 i = BIO_read(tmpmem, buf, sizeof(buf));
468 BIO_write(data, buf, i);
470 BIO_free_all(tmpmem);