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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>
67 #include <openssl/engine.h>
70 #define PROG smime_main
71 static int save_certs(char *signerfile
, STACK_OF(X509
) *signers
);
74 #define SMIME_ENCRYPT (1 | SMIME_OP)
75 #define SMIME_DECRYPT 2
76 #define SMIME_SIGN (3 | SMIME_OP)
77 #define SMIME_VERIFY 4
78 #define SMIME_PK7OUT 5
80 int MAIN(int, char **);
82 int MAIN(int argc
, char **argv
)
88 char *inmode
= "r", *outmode
= "w";
89 char *infile
= NULL
, *outfile
= NULL
;
90 char *signerfile
= NULL
, *recipfile
= NULL
;
91 char *certfile
= NULL
, *keyfile
= NULL
, *contfile
=NULL
;
92 EVP_CIPHER
*cipher
= NULL
;
94 X509_STORE
*store
= NULL
;
95 X509
*cert
= NULL
, *recip
= NULL
, *signer
= NULL
;
97 STACK_OF(X509
) *encerts
= NULL
, *other
= NULL
;
98 BIO
*in
= NULL
, *out
= NULL
, *indata
= NULL
;
100 int flags
= PKCS7_DETACHED
;
101 char *to
= NULL
, *from
= NULL
, *subject
= NULL
;
102 char *CAfile
= NULL
, *CApath
= NULL
;
103 char *passargin
= NULL
, *passin
= NULL
;
106 int informat
= FORMAT_SMIME
, outformat
= FORMAT_SMIME
;
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
;
118 #ifndef OPENSSL_NO_DES
119 else if (!strcmp (*args
, "-des3"))
120 cipher
= EVP_des_ede3_cbc();
121 else if (!strcmp (*args
, "-des"))
122 cipher
= EVP_des_cbc();
124 #ifndef OPENSSL_NO_RC2
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
, "-nosmimecap"))
147 flags
|= PKCS7_NOSMIMECAP
;
148 else if (!strcmp (*args
, "-binary"))
149 flags
|= PKCS7_BINARY
;
150 else if (!strcmp (*args
, "-nosigs"))
151 flags
|= PKCS7_NOSIGS
;
152 else if (!strcmp(*args
,"-rand")) {
158 } else if (!strcmp(*args
,"-engine")) {
163 } else if (!strcmp(*args
,"-passin")) {
168 } else if (!strcmp (*args
, "-to")) {
173 } else if (!strcmp (*args
, "-from")) {
178 } else if (!strcmp (*args
, "-subject")) {
183 } else if (!strcmp (*args
, "-signer")) {
188 } else if (!strcmp (*args
, "-recip")) {
193 } else if (!strcmp (*args
, "-inkey")) {
198 } else if (!strcmp (*args
, "-certfile")) {
203 } else if (!strcmp (*args
, "-CAfile")) {
208 } else if (!strcmp (*args
, "-CApath")) {
213 } else if (!strcmp (*args
, "-in")) {
218 } else if (!strcmp (*args
, "-inform")) {
221 informat
= str2fmt(*args
);
223 } else if (!strcmp (*args
, "-outform")) {
226 outformat
= str2fmt(*args
);
228 } else if (!strcmp (*args
, "-out")) {
233 } else if (!strcmp (*args
, "-content")) {
242 if(operation
== SMIME_SIGN
) {
244 BIO_printf(bio_err
, "No signer certificate specified\n");
248 } else if(operation
== SMIME_DECRYPT
) {
250 BIO_printf(bio_err
, "No recipient certificate and key specified\n");
253 } else if(operation
== SMIME_ENCRYPT
) {
255 BIO_printf(bio_err
, "No recipient(s) certificate(s) specified\n");
259 } else if(!operation
) badarg
= 1;
262 BIO_printf (bio_err
, "Usage smime [options] cert.pem ...\n");
263 BIO_printf (bio_err
, "where options are\n");
264 BIO_printf (bio_err
, "-encrypt encrypt message\n");
265 BIO_printf (bio_err
, "-decrypt decrypt encrypted message\n");
266 BIO_printf (bio_err
, "-sign sign message\n");
267 BIO_printf (bio_err
, "-verify verify signed message\n");
268 BIO_printf (bio_err
, "-pk7out output PKCS#7 structure\n");
269 #ifndef OPENSSL_NO_DES
270 BIO_printf (bio_err
, "-des3 encrypt with triple DES\n");
271 BIO_printf (bio_err
, "-des encrypt with DES\n");
273 #ifndef OPENSSL_NO_RC2
274 BIO_printf (bio_err
, "-rc2-40 encrypt with RC2-40 (default)\n");
275 BIO_printf (bio_err
, "-rc2-64 encrypt with RC2-64\n");
276 BIO_printf (bio_err
, "-rc2-128 encrypt with RC2-128\n");
278 BIO_printf (bio_err
, "-nointern don't search certificates in message for signer\n");
279 BIO_printf (bio_err
, "-nosigs don't verify message signature\n");
280 BIO_printf (bio_err
, "-noverify don't verify signers certificate\n");
281 BIO_printf (bio_err
, "-nocerts don't include signers certificate when signing\n");
282 BIO_printf (bio_err
, "-nodetach use opaque signing\n");
283 BIO_printf (bio_err
, "-noattr don't include any signed attributes\n");
284 BIO_printf (bio_err
, "-binary don't translate message to text\n");
285 BIO_printf (bio_err
, "-certfile file other certificates file\n");
286 BIO_printf (bio_err
, "-signer file signer certificate file\n");
287 BIO_printf (bio_err
, "-recip file recipient certificate file for decryption\n");
288 BIO_printf (bio_err
, "-in file input file\n");
289 BIO_printf (bio_err
, "-inform arg input format SMIME (default), PEM or DER\n");
290 BIO_printf (bio_err
, "-inkey file input private key (if not signer or recipient)\n");
291 BIO_printf (bio_err
, "-out file output file\n");
292 BIO_printf (bio_err
, "-outform arg output format SMIME (default), PEM or DER\n");
293 BIO_printf (bio_err
, "-content file supply or override content for detached signature\n");
294 BIO_printf (bio_err
, "-to addr to address\n");
295 BIO_printf (bio_err
, "-from ad from address\n");
296 BIO_printf (bio_err
, "-subject s subject\n");
297 BIO_printf (bio_err
, "-text include or delete text MIME headers\n");
298 BIO_printf (bio_err
, "-CApath dir trusted certificates directory\n");
299 BIO_printf (bio_err
, "-CAfile file trusted certificates file\n");
300 BIO_printf (bio_err
, "-engine e use engine e, possibly a hardware device.\n");
301 BIO_printf(bio_err
, "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR
, LIST_SEPARATOR_CHAR
);
302 BIO_printf(bio_err
, " load the file (or the files in the directory) into\n");
303 BIO_printf(bio_err
, " the random number generator\n");
304 BIO_printf (bio_err
, "cert.pem recipient certificate(s) for encryption\n");
310 if((e
= ENGINE_by_id(engine
)) == NULL
)
312 BIO_printf(bio_err
,"invalid engine \"%s\"\n",
316 if(!ENGINE_set_default(e
, ENGINE_METHOD_ALL
))
318 BIO_printf(bio_err
,"can't use that engine\n");
321 BIO_printf(bio_err
,"engine \"%s\" set.\n", engine
);
322 /* Free our "structural" reference. */
326 if(!app_passwd(bio_err
, passargin
, NULL
, &passin
, NULL
)) {
327 BIO_printf(bio_err
, "Error getting password\n");
332 app_RAND_load_file(NULL
, bio_err
, (inrand
!= NULL
));
334 BIO_printf(bio_err
,"%ld semi-random bytes loaded\n",
335 app_RAND_load_files(inrand
));
340 if(operation
!= SMIME_SIGN
) flags
&= ~PKCS7_DETACHED
;
342 if(operation
& SMIME_OP
) {
343 if(flags
& PKCS7_BINARY
) inmode
= "rb";
344 if(outformat
== FORMAT_ASN1
) outmode
= "wb";
346 if(flags
& PKCS7_BINARY
) outmode
= "wb";
347 if(informat
== FORMAT_ASN1
) inmode
= "rb";
350 if(operation
== SMIME_ENCRYPT
) {
352 #ifndef OPENSSL_NO_RC2
353 cipher
= EVP_rc2_40_cbc();
355 BIO_printf(bio_err
, "No cipher selected\n");
359 encerts
= sk_X509_new_null();
361 if(!(cert
= load_cert(bio_err
,*args
,FORMAT_PEM
))) {
362 BIO_printf(bio_err
, "Can't read recipient certificate file %s\n", *args
);
365 sk_X509_push(encerts
, cert
);
371 if(signerfile
&& (operation
== SMIME_SIGN
)) {
372 if(!(signer
= load_cert(bio_err
,signerfile
,FORMAT_PEM
))) {
373 BIO_printf(bio_err
, "Can't read signer certificate file %s\n", signerfile
);
379 if(!(other
= load_certs(bio_err
,certfile
,FORMAT_PEM
))) {
380 BIO_printf(bio_err
, "Can't read certificate file %s\n", certfile
);
381 ERR_print_errors(bio_err
);
386 if(recipfile
&& (operation
== SMIME_DECRYPT
)) {
387 if(!(recip
= load_cert(bio_err
,recipfile
,FORMAT_PEM
))) {
388 BIO_printf(bio_err
, "Can't read recipient certificate file %s\n", recipfile
);
389 ERR_print_errors(bio_err
);
394 if(operation
== SMIME_DECRYPT
) {
395 if(!keyfile
) keyfile
= recipfile
;
396 } else if(operation
== SMIME_SIGN
) {
397 if(!keyfile
) keyfile
= signerfile
;
398 } else keyfile
= NULL
;
401 if(!(key
= load_key(bio_err
,keyfile
, FORMAT_PEM
, passin
, NULL
))) {
402 BIO_printf(bio_err
, "Can't read recipient certificate file %s\n", keyfile
);
403 ERR_print_errors(bio_err
);
409 if (!(in
= BIO_new_file(infile
, inmode
))) {
411 "Can't open input file %s\n", infile
);
414 } else in
= BIO_new_fp(stdin
, BIO_NOCLOSE
);
417 if (!(out
= BIO_new_file(outfile
, outmode
))) {
419 "Can't open output file %s\n", outfile
);
423 out
= BIO_new_fp(stdout
, BIO_NOCLOSE
);
424 #ifdef OPENSSL_SYS_VMS
426 BIO
*tmpbio
= BIO_new(BIO_f_linebuffer());
427 out
= BIO_push(tmpbio
, out
);
432 if(operation
== SMIME_VERIFY
) {
433 if(!(store
= setup_verify(bio_err
, CAfile
, CApath
))) goto end
;
438 if(operation
== SMIME_ENCRYPT
) {
439 p7
= PKCS7_encrypt(encerts
, in
, cipher
, flags
);
440 } else if(operation
== SMIME_SIGN
) {
441 p7
= PKCS7_sign(signer
, key
, other
, in
, flags
);
444 if(informat
== FORMAT_SMIME
)
445 p7
= SMIME_read_PKCS7(in
, &indata
);
446 else if(informat
== FORMAT_PEM
)
447 p7
= PEM_read_bio_PKCS7(in
, NULL
, NULL
, NULL
);
448 else if(informat
== FORMAT_ASN1
)
449 p7
= d2i_PKCS7_bio(in
, NULL
);
451 BIO_printf(bio_err
, "Bad input format for PKCS#7 file\n");
456 BIO_printf(bio_err
, "Error reading S/MIME message\n");
461 if(!(indata
= BIO_new_file(contfile
, "rb"))) {
462 BIO_printf(bio_err
, "Can't read content file %s\n", contfile
);
469 BIO_printf(bio_err
, "Error creating PKCS#7 structure\n");
474 if(operation
== SMIME_DECRYPT
) {
475 if(!PKCS7_decrypt(p7
, key
, recip
, out
, flags
)) {
476 BIO_printf(bio_err
, "Error decrypting PKCS#7 structure\n");
479 } else if(operation
== SMIME_VERIFY
) {
480 STACK_OF(X509
) *signers
;
481 if(PKCS7_verify(p7
, other
, store
, indata
, out
, flags
)) {
482 BIO_printf(bio_err
, "Verification Successful\n");
484 BIO_printf(bio_err
, "Verification Failure\n");
487 signers
= PKCS7_get0_signers(p7
, other
, flags
);
488 if(!save_certs(signerfile
, signers
)) {
489 BIO_printf(bio_err
, "Error writing signers to %s\n",
494 sk_X509_free(signers
);
495 } else if(operation
== SMIME_PK7OUT
) {
496 PEM_write_bio_PKCS7(out
, p7
);
498 if(to
) BIO_printf(out
, "To: %s\n", to
);
499 if(from
) BIO_printf(out
, "From: %s\n", from
);
500 if(subject
) BIO_printf(out
, "Subject: %s\n", subject
);
501 if(outformat
== FORMAT_SMIME
)
502 SMIME_write_PKCS7(out
, p7
, in
, flags
);
503 else if(outformat
== FORMAT_PEM
)
504 PEM_write_bio_PKCS7(out
,p7
);
505 else if(outformat
== FORMAT_ASN1
)
506 i2d_PKCS7_bio(out
,p7
);
508 BIO_printf(bio_err
, "Bad output format for PKCS#7 file\n");
515 app_RAND_write_file(NULL
, bio_err
);
516 if(ret
) ERR_print_errors(bio_err
);
517 sk_X509_pop_free(encerts
, X509_free
);
518 sk_X509_pop_free(other
, X509_free
);
519 X509_STORE_free(store
);
528 if(passin
) OPENSSL_free(passin
);
532 static int save_certs(char *signerfile
, STACK_OF(X509
) *signers
)
536 if(!signerfile
) return 1;
537 tmp
= BIO_new_file(signerfile
, "w");
539 for(i
= 0; i
< sk_X509_num(signers
); i
++)
540 PEM_write_bio_X509(tmp
, sk_X509_value(signers
, i
));