]>
git.ipfire.org Git - thirdparty/openssl.git/blob - apps/smime.c
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 /* S/MIME utility function */
64 #include <openssl/crypto.h>
65 #include <openssl/pem.h>
66 #include <openssl/err.h>
69 #define PROG smime_main
70 static X509
*load_cert(char *file
);
71 static EVP_PKEY
*load_key(char *file
, char *pass
);
72 static STACK_OF(X509
) *load_certs(char *file
);
73 static X509_STORE
*setup_verify(char *CAfile
, char *CApath
);
74 static int save_certs(char *signerfile
, STACK_OF(X509
) *signers
);
77 #define SMIME_ENCRYPT (1 | SMIME_OP)
78 #define SMIME_DECRYPT 2
79 #define SMIME_SIGN (3 | SMIME_OP)
80 #define SMIME_VERIFY 4
81 #define SMIME_PK7OUT 5
83 int MAIN(int, char **);
85 int MAIN(int argc
, char **argv
)
90 char *inmode
= "r", *outmode
= "w";
91 char *infile
= NULL
, *outfile
= NULL
;
92 char *signerfile
= NULL
, *recipfile
= NULL
;
93 char *certfile
= NULL
, *keyfile
= NULL
;
94 EVP_CIPHER
*cipher
= NULL
;
96 X509_STORE
*store
= NULL
;
97 X509
*cert
= NULL
, *recip
= NULL
, *signer
= NULL
;
99 STACK_OF(X509
) *encerts
= NULL
, *other
= NULL
;
100 BIO
*in
= NULL
, *out
= NULL
, *indata
= NULL
;
102 int flags
= PKCS7_DETACHED
;
103 char *to
= NULL
, *from
= NULL
, *subject
= NULL
;
104 char *CAfile
= NULL
, *CApath
= NULL
;
105 char *passargin
= NULL
, *passin
= NULL
;
112 while (!badarg
&& *args
&& *args
[0] == '-') {
113 if (!strcmp (*args
, "-encrypt")) operation
= SMIME_ENCRYPT
;
114 else if (!strcmp (*args
, "-decrypt")) operation
= SMIME_DECRYPT
;
115 else if (!strcmp (*args
, "-sign")) operation
= SMIME_SIGN
;
116 else if (!strcmp (*args
, "-verify")) operation
= SMIME_VERIFY
;
117 else if (!strcmp (*args
, "-pk7out")) operation
= SMIME_PK7OUT
;
119 else if (!strcmp (*args
, "-des3"))
120 cipher
= EVP_des_ede3_cbc();
121 else if (!strcmp (*args
, "-des"))
122 cipher
= EVP_des_cbc();
125 else if (!strcmp (*args
, "-rc2-40"))
126 cipher
= EVP_rc2_40_cbc();
127 else if (!strcmp (*args
, "-rc2-128"))
128 cipher
= EVP_rc2_cbc();
129 else if (!strcmp (*args
, "-rc2-64"))
130 cipher
= EVP_rc2_64_cbc();
132 else if (!strcmp (*args
, "-text"))
134 else if (!strcmp (*args
, "-nointern"))
135 flags
|= PKCS7_NOINTERN
;
136 else if (!strcmp (*args
, "-noverify"))
137 flags
|= PKCS7_NOVERIFY
;
138 else if (!strcmp (*args
, "-nochain"))
139 flags
|= PKCS7_NOCHAIN
;
140 else if (!strcmp (*args
, "-nocerts"))
141 flags
|= PKCS7_NOCERTS
;
142 else if (!strcmp (*args
, "-noattr"))
143 flags
|= PKCS7_NOATTR
;
144 else if (!strcmp (*args
, "-nodetach"))
145 flags
&= ~PKCS7_DETACHED
;
146 else if (!strcmp (*args
, "-binary"))
147 flags
|= PKCS7_BINARY
;
148 else if (!strcmp (*args
, "-nosigs"))
149 flags
|= PKCS7_NOSIGS
;
150 else if (!strcmp(*args
,"-rand")) {
156 } else if (!strcmp(*args
,"-passin")) {
161 } else if (!strcmp (*args
, "-to")) {
166 } else if (!strcmp (*args
, "-from")) {
171 } else if (!strcmp (*args
, "-subject")) {
176 } else if (!strcmp (*args
, "-signer")) {
181 } else if (!strcmp (*args
, "-recip")) {
186 } else if (!strcmp (*args
, "-inkey")) {
191 } else if (!strcmp (*args
, "-certfile")) {
196 } else if (!strcmp (*args
, "-CAfile")) {
201 } else if (!strcmp (*args
, "-CApath")) {
206 } else if (!strcmp (*args
, "-in")) {
211 } else if (!strcmp (*args
, "-out")) {
220 if(operation
== SMIME_SIGN
) {
222 BIO_printf(bio_err
, "No signer certificate specified\n");
226 } else if(operation
== SMIME_DECRYPT
) {
228 BIO_printf(bio_err
, "No recipient certificate and key specified\n");
231 } else if(operation
== SMIME_ENCRYPT
) {
233 BIO_printf(bio_err
, "No recipient(s) certificate(s) specified\n");
237 } else if(!operation
) badarg
= 1;
240 BIO_printf (bio_err
, "Usage smime [options] cert.pem ...\n");
241 BIO_printf (bio_err
, "where options are\n");
242 BIO_printf (bio_err
, "-encrypt encrypt message\n");
243 BIO_printf (bio_err
, "-decrypt decrypt encrypted message\n");
244 BIO_printf (bio_err
, "-sign sign message\n");
245 BIO_printf (bio_err
, "-verify verify signed message\n");
246 BIO_printf (bio_err
, "-pk7out output PKCS#7 structure\n");
248 BIO_printf (bio_err
, "-des3 encrypt with triple DES\n");
249 BIO_printf (bio_err
, "-des encrypt with DES\n");
252 BIO_printf (bio_err
, "-rc2-40 encrypt with RC2-40 (default)\n");
253 BIO_printf (bio_err
, "-rc2-64 encrypt with RC2-64\n");
254 BIO_printf (bio_err
, "-rc2-128 encrypt with RC2-128\n");
256 BIO_printf (bio_err
, "-nointern don't search certificates in message for signer\n");
257 BIO_printf (bio_err
, "-nosigs don't verify message signature\n");
258 BIO_printf (bio_err
, "-noverify don't verify signers certificate\n");
259 BIO_printf (bio_err
, "-nocerts don't include signers certificate when signing\n");
260 BIO_printf (bio_err
, "-nodetach use opaque signing\n");
261 BIO_printf (bio_err
, "-noattr don't include any signed attributes\n");
262 BIO_printf (bio_err
, "-binary don't translate message to text\n");
263 BIO_printf (bio_err
, "-certfile file other certificates file\n");
264 BIO_printf (bio_err
, "-signer file signer certificate file\n");
265 BIO_printf (bio_err
, "-recip file recipient certificate file for decryption\n");
266 BIO_printf (bio_err
, "-in file input file\n");
267 BIO_printf (bio_err
, "-inkey file input private key (if not signer or recipient)\n");
268 BIO_printf (bio_err
, "-out file output file\n");
269 BIO_printf (bio_err
, "-to addr to address\n");
270 BIO_printf (bio_err
, "-from ad from address\n");
271 BIO_printf (bio_err
, "-subject s subject\n");
272 BIO_printf (bio_err
, "-text include or delete text MIME headers\n");
273 BIO_printf (bio_err
, "-CApath dir trusted certificates directory\n");
274 BIO_printf (bio_err
, "-CAfile file trusted certificates file\n");
275 BIO_printf(bio_err
, "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR
, LIST_SEPARATOR_CHAR
);
276 BIO_printf(bio_err
, " load the file (or the files in the directory) into\n");
277 BIO_printf(bio_err
, " the random number generator\n");
278 BIO_printf (bio_err
, "cert.pem recipient certificate(s) for encryption\n");
282 if(!app_passwd(bio_err
, passargin
, NULL
, &passin
, NULL
)) {
283 BIO_printf(bio_err
, "Error getting password\n");
288 app_RAND_load_file(NULL
, bio_err
, (inrand
!= NULL
));
290 BIO_printf(bio_err
,"%ld semi-random bytes loaded\n",
291 app_RAND_load_files(inrand
));
296 if(operation
!= SMIME_SIGN
) flags
&= ~PKCS7_DETACHED
;
298 if(flags
& PKCS7_BINARY
) {
299 if(operation
& SMIME_OP
) inmode
= "rb";
303 if(operation
== SMIME_ENCRYPT
) {
306 cipher
= EVP_rc2_40_cbc();
308 BIO_printf(bio_err
, "No cipher selected\n");
313 CRYPTO_push_info("load encryption certificates");
315 encerts
= sk_X509_new_null();
317 if(!(cert
= load_cert(*args
))) {
318 BIO_printf(bio_err
, "Can't read recipient certificate file %s\n", *args
);
321 sk_X509_push(encerts
, cert
);
330 if(signerfile
&& (operation
== SMIME_SIGN
)) {
332 CRYPTO_push_info("load signer certificate");
334 if(!(signer
= load_cert(signerfile
))) {
335 BIO_printf(bio_err
, "Can't read signer certificate file %s\n", signerfile
);
345 CRYPTO_push_info("load other certfiles");
347 if(!(other
= load_certs(certfile
))) {
348 BIO_printf(bio_err
, "Can't read certificate file %s\n", certfile
);
349 ERR_print_errors(bio_err
);
357 if(recipfile
&& (operation
== SMIME_DECRYPT
)) {
359 CRYPTO_push_info("load recipient certificate");
361 if(!(recip
= load_cert(recipfile
))) {
362 BIO_printf(bio_err
, "Can't read recipient certificate file %s\n", recipfile
);
363 ERR_print_errors(bio_err
);
371 if(operation
== SMIME_DECRYPT
) {
372 if(!keyfile
) keyfile
= recipfile
;
373 } else if(operation
== SMIME_SIGN
) {
374 if(!keyfile
) keyfile
= signerfile
;
375 } else keyfile
= NULL
;
379 CRYPTO_push_info("load keyfile");
381 if(!(key
= load_key(keyfile
, passin
))) {
382 BIO_printf(bio_err
, "Can't read recipient certificate file %s\n", keyfile
);
383 ERR_print_errors(bio_err
);
392 CRYPTO_push_info("open input files");
395 if (!(in
= BIO_new_file(infile
, inmode
))) {
397 "Can't open input file %s\n", infile
);
400 } else in
= BIO_new_fp(stdin
, BIO_NOCLOSE
);
406 CRYPTO_push_info("open output files");
409 if (!(out
= BIO_new_file(outfile
, outmode
))) {
411 "Can't open output file %s\n", outfile
);
414 } else out
= BIO_new_fp(stdout
, BIO_NOCLOSE
);
419 if(operation
== SMIME_VERIFY
) {
421 CRYPTO_push_info("setup_verify");
423 if(!(store
= setup_verify(CAfile
, CApath
))) goto end
;
431 if(operation
== SMIME_ENCRYPT
) {
433 CRYPTO_push_info("PKCS7_encrypt");
435 p7
= PKCS7_encrypt(encerts
, in
, cipher
, flags
);
439 } else if(operation
== SMIME_SIGN
) {
441 CRYPTO_push_info("PKCS7_sign");
443 p7
= PKCS7_sign(signer
, key
, other
, in
, flags
);
450 CRYPTO_push_info("SMIME_read_PKCS7");
452 if(!(p7
= SMIME_read_PKCS7(in
, &indata
))) {
453 BIO_printf(bio_err
, "Error reading S/MIME message\n");
462 BIO_printf(bio_err
, "Error creating PKCS#7 structure\n");
467 if(operation
== SMIME_DECRYPT
) {
469 CRYPTO_push_info("PKCS7_decrypt");
471 if(!PKCS7_decrypt(p7
, key
, recip
, out
, flags
)) {
472 BIO_printf(bio_err
, "Error decrypting PKCS#7 structure\n");
478 } else if(operation
== SMIME_VERIFY
) {
479 STACK_OF(X509
) *signers
;
481 CRYPTO_push_info("PKCS7_verify");
483 if(PKCS7_verify(p7
, other
, store
, indata
, out
, flags
)) {
484 BIO_printf(bio_err
, "Verification Successful\n");
486 BIO_printf(bio_err
, "Verification Failure\n");
491 CRYPTO_push_info("PKCS7_get0_signers");
493 signers
= PKCS7_get0_signers(p7
, other
, flags
);
496 CRYPTO_push_info("save_certs");
498 if(!save_certs(signerfile
, signers
)) {
499 BIO_printf(bio_err
, "Error writing signers to %s\n",
507 sk_X509_free(signers
);
508 } else if(operation
== SMIME_PK7OUT
) {
509 PEM_write_bio_PKCS7(out
, p7
);
511 if(to
) BIO_printf(out
, "To: %s\n", to
);
512 if(from
) BIO_printf(out
, "From: %s\n", from
);
513 if(subject
) BIO_printf(out
, "Subject: %s\n", subject
);
514 SMIME_write_PKCS7(out
, p7
, in
, flags
);
519 CRYPTO_remove_all_info();
522 app_RAND_write_file(NULL
, bio_err
);
523 if(ret
) ERR_print_errors(bio_err
);
524 sk_X509_pop_free(encerts
, X509_free
);
525 sk_X509_pop_free(other
, X509_free
);
526 X509_STORE_free(store
);
535 if(passin
) Free(passin
);
539 static X509
*load_cert(char *file
)
543 if(!(in
= BIO_new_file(file
, "r"))) return NULL
;
544 cert
= PEM_read_bio_X509(in
, NULL
, NULL
,NULL
);
549 static EVP_PKEY
*load_key(char *file
, char *pass
)
553 if(!(in
= BIO_new_file(file
, "r"))) return NULL
;
554 key
= PEM_read_bio_PrivateKey(in
, NULL
,NULL
,pass
);
559 static STACK_OF(X509
) *load_certs(char *file
)
563 STACK_OF(X509
) *othercerts
;
564 STACK_OF(X509_INFO
) *allcerts
;
566 if(!(in
= BIO_new_file(file
, "r"))) return NULL
;
567 othercerts
= sk_X509_new(NULL
);
568 if(!othercerts
) return NULL
;
569 allcerts
= PEM_X509_INFO_read_bio(in
, NULL
, NULL
, NULL
);
570 for(i
= 0; i
< sk_X509_INFO_num(allcerts
); i
++) {
571 xi
= sk_X509_INFO_value (allcerts
, i
);
573 sk_X509_push(othercerts
, xi
->x509
);
577 sk_X509_INFO_pop_free(allcerts
, X509_INFO_free
);
582 static X509_STORE
*setup_verify(char *CAfile
, char *CApath
)
587 CRYPTO_push_info("X509_STORE_new");
589 if(!(store
= X509_STORE_new())) goto end
;
592 CRYPTO_push_info("X509_STORE_add_lookup(...file)");
594 lookup
=X509_STORE_add_lookup(store
,X509_LOOKUP_file());
595 if (lookup
== NULL
) goto end
;
598 CRYPTO_push_info("X509_LOOKUP_load_file");
601 if(!X509_LOOKUP_load_file(lookup
,CAfile
,X509_FILETYPE_PEM
)) {
602 BIO_printf(bio_err
, "Error loading file %s\n", CAfile
);
605 } else X509_LOOKUP_load_file(lookup
,NULL
,X509_FILETYPE_DEFAULT
);
609 CRYPTO_push_info("X509_STORE_add_lookup(...hash_dir)");
611 lookup
=X509_STORE_add_lookup(store
,X509_LOOKUP_hash_dir());
612 if (lookup
== NULL
) goto end
;
615 CRYPTO_push_info("X509_LOOKUP_add_dir");
618 if(!X509_LOOKUP_add_dir(lookup
,CApath
,X509_FILETYPE_PEM
)) {
619 BIO_printf(bio_err
, "Error loading directory %s\n", CApath
);
622 } else X509_LOOKUP_add_dir(lookup
,NULL
,X509_FILETYPE_DEFAULT
);
630 X509_STORE_free(store
);
634 static int save_certs(char *signerfile
, STACK_OF(X509
) *signers
)
638 if(!signerfile
) return 1;
639 tmp
= BIO_new_file(signerfile
, "w");
641 for(i
= 0; i
< sk_X509_num(signers
); i
++)
642 PEM_write_bio_X509(tmp
, sk_X509_value(signers
, i
));