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 int save_certs(char *signerfile
, STACK_OF(X509
) *signers
);
73 #define SMIME_ENCRYPT (1 | SMIME_OP)
74 #define SMIME_DECRYPT 2
75 #define SMIME_SIGN (3 | SMIME_OP)
76 #define SMIME_VERIFY 4
77 #define SMIME_PK7OUT 5
79 int MAIN(int, char **);
81 int MAIN(int argc
, char **argv
)
87 char *inmode
= "r", *outmode
= "w";
88 char *infile
= NULL
, *outfile
= NULL
;
89 char *signerfile
= NULL
, *recipfile
= NULL
;
90 char *certfile
= NULL
, *keyfile
= NULL
, *contfile
=NULL
;
91 const EVP_CIPHER
*cipher
= NULL
;
93 X509_STORE
*store
= NULL
;
94 X509
*cert
= NULL
, *recip
= NULL
, *signer
= NULL
;
96 STACK_OF(X509
) *encerts
= NULL
, *other
= NULL
;
97 BIO
*in
= NULL
, *out
= NULL
, *indata
= NULL
;
99 int flags
= PKCS7_DETACHED
, store_flags
= 0;
100 char *to
= NULL
, *from
= NULL
, *subject
= NULL
;
101 char *CAfile
= NULL
, *CApath
= NULL
;
102 char *passargin
= NULL
, *passin
= NULL
;
105 int informat
= FORMAT_SMIME
, outformat
= FORMAT_SMIME
;
106 int keyform
= FORMAT_PEM
;
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
, "-crl_check"))
153 store_flags
|= X509_V_FLAG_CRL_CHECK
;
154 else if (!strcmp (*args
, "-crl_check_all"))
155 store_flags
|= X509_V_FLAG_CRL_CHECK
|X509_V_FLAG_CRL_CHECK_ALL
;
156 else if (!strcmp(*args
,"-rand")) {
162 } else if (!strcmp(*args
,"-engine")) {
167 } else if (!strcmp(*args
,"-passin")) {
172 } else if (!strcmp (*args
, "-to")) {
177 } else if (!strcmp (*args
, "-from")) {
182 } else if (!strcmp (*args
, "-subject")) {
187 } else if (!strcmp (*args
, "-signer")) {
192 } else if (!strcmp (*args
, "-recip")) {
197 } else if (!strcmp (*args
, "-inkey")) {
202 } else if (!strcmp (*args
, "-keyform")) {
205 keyform
= str2fmt(*args
);
207 } else if (!strcmp (*args
, "-certfile")) {
212 } else if (!strcmp (*args
, "-CAfile")) {
217 } else if (!strcmp (*args
, "-CApath")) {
222 } else if (!strcmp (*args
, "-in")) {
227 } else if (!strcmp (*args
, "-inform")) {
230 informat
= str2fmt(*args
);
232 } else if (!strcmp (*args
, "-outform")) {
235 outformat
= str2fmt(*args
);
237 } else if (!strcmp (*args
, "-out")) {
242 } else if (!strcmp (*args
, "-content")) {
251 if(operation
== SMIME_SIGN
) {
253 BIO_printf(bio_err
, "No signer certificate specified\n");
257 } else if(operation
== SMIME_DECRYPT
) {
259 BIO_printf(bio_err
, "No recipient certificate and key specified\n");
262 } else if(operation
== SMIME_ENCRYPT
) {
264 BIO_printf(bio_err
, "No recipient(s) certificate(s) specified\n");
268 } else if(!operation
) badarg
= 1;
271 BIO_printf (bio_err
, "Usage smime [options] cert.pem ...\n");
272 BIO_printf (bio_err
, "where options are\n");
273 BIO_printf (bio_err
, "-encrypt encrypt message\n");
274 BIO_printf (bio_err
, "-decrypt decrypt encrypted message\n");
275 BIO_printf (bio_err
, "-sign sign message\n");
276 BIO_printf (bio_err
, "-verify verify signed message\n");
277 BIO_printf (bio_err
, "-pk7out output PKCS#7 structure\n");
278 #ifndef OPENSSL_NO_DES
279 BIO_printf (bio_err
, "-des3 encrypt with triple DES\n");
280 BIO_printf (bio_err
, "-des encrypt with DES\n");
282 #ifndef OPENSSL_NO_RC2
283 BIO_printf (bio_err
, "-rc2-40 encrypt with RC2-40 (default)\n");
284 BIO_printf (bio_err
, "-rc2-64 encrypt with RC2-64\n");
285 BIO_printf (bio_err
, "-rc2-128 encrypt with RC2-128\n");
287 BIO_printf (bio_err
, "-nointern don't search certificates in message for signer\n");
288 BIO_printf (bio_err
, "-nosigs don't verify message signature\n");
289 BIO_printf (bio_err
, "-noverify don't verify signers certificate\n");
290 BIO_printf (bio_err
, "-nocerts don't include signers certificate when signing\n");
291 BIO_printf (bio_err
, "-nodetach use opaque signing\n");
292 BIO_printf (bio_err
, "-noattr don't include any signed attributes\n");
293 BIO_printf (bio_err
, "-binary don't translate message to text\n");
294 BIO_printf (bio_err
, "-certfile file other certificates file\n");
295 BIO_printf (bio_err
, "-signer file signer certificate file\n");
296 BIO_printf (bio_err
, "-recip file recipient certificate file for decryption\n");
297 BIO_printf (bio_err
, "-in file input file\n");
298 BIO_printf (bio_err
, "-inform arg input format SMIME (default), PEM or DER\n");
299 BIO_printf (bio_err
, "-inkey file input private key (if not signer or recipient)\n");
300 BIO_printf (bio_err
, "-keyform arg input private key format (PEM or ENGINE)\n");
301 BIO_printf (bio_err
, "-out file output file\n");
302 BIO_printf (bio_err
, "-outform arg output format SMIME (default), PEM or DER\n");
303 BIO_printf (bio_err
, "-content file supply or override content for detached signature\n");
304 BIO_printf (bio_err
, "-to addr to address\n");
305 BIO_printf (bio_err
, "-from ad from address\n");
306 BIO_printf (bio_err
, "-subject s subject\n");
307 BIO_printf (bio_err
, "-text include or delete text MIME headers\n");
308 BIO_printf (bio_err
, "-CApath dir trusted certificates directory\n");
309 BIO_printf (bio_err
, "-CAfile file trusted certificates file\n");
310 BIO_printf (bio_err
, "-crl_check check revocation status of signer's certificate using CRLs\n");
311 BIO_printf (bio_err
, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n");
312 BIO_printf (bio_err
, "-engine e use engine e, possibly a hardware device.\n");
313 BIO_printf (bio_err
, "-passin arg input file pass phrase source\n");
314 BIO_printf(bio_err
, "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR
, LIST_SEPARATOR_CHAR
);
315 BIO_printf(bio_err
, " load the file (or the files in the directory) into\n");
316 BIO_printf(bio_err
, " the random number generator\n");
317 BIO_printf (bio_err
, "cert.pem recipient certificate(s) for encryption\n");
321 e
= setup_engine(bio_err
, engine
, 0);
323 if(!app_passwd(bio_err
, passargin
, NULL
, &passin
, NULL
)) {
324 BIO_printf(bio_err
, "Error getting password\n");
329 app_RAND_load_file(NULL
, bio_err
, (inrand
!= NULL
));
331 BIO_printf(bio_err
,"%ld semi-random bytes loaded\n",
332 app_RAND_load_files(inrand
));
337 if(operation
!= SMIME_SIGN
) flags
&= ~PKCS7_DETACHED
;
339 if(operation
& SMIME_OP
) {
340 if(flags
& PKCS7_BINARY
) inmode
= "rb";
341 if(outformat
== FORMAT_ASN1
) outmode
= "wb";
343 if(flags
& PKCS7_BINARY
) outmode
= "wb";
344 if(informat
== FORMAT_ASN1
) inmode
= "rb";
347 if(operation
== SMIME_ENCRYPT
) {
349 #ifndef OPENSSL_NO_RC2
350 cipher
= EVP_rc2_40_cbc();
352 BIO_printf(bio_err
, "No cipher selected\n");
356 encerts
= sk_X509_new_null();
358 if(!(cert
= load_cert(bio_err
,*args
,FORMAT_PEM
,
359 NULL
, e
, "recipient certificate file"))) {
360 #if 0 /* An appropriate message is already printed */
361 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
, NULL
,
373 e
, "signer certificate"))) {
374 #if 0 /* An appropri message has already been printed */
375 BIO_printf(bio_err
, "Can't read signer certificate file %s\n", signerfile
);
382 if(!(other
= load_certs(bio_err
,certfile
,FORMAT_PEM
, NULL
,
383 e
, "certificate file"))) {
384 #if 0 /* An appropriate message has already been printed */
385 BIO_printf(bio_err
, "Can't read certificate file %s\n", certfile
);
387 ERR_print_errors(bio_err
);
392 if(recipfile
&& (operation
== SMIME_DECRYPT
)) {
393 if(!(recip
= load_cert(bio_err
,recipfile
,FORMAT_PEM
,NULL
,
394 e
, "recipient certificate file"))) {
395 #if 0 /* An appropriate message has alrady been printed */
396 BIO_printf(bio_err
, "Can't read recipient certificate file %s\n", recipfile
);
398 ERR_print_errors(bio_err
);
403 if(operation
== SMIME_DECRYPT
) {
404 if(!keyfile
) keyfile
= recipfile
;
405 } else if(operation
== SMIME_SIGN
) {
406 if(!keyfile
) keyfile
= signerfile
;
407 } else keyfile
= NULL
;
410 key
= load_key(bio_err
, keyfile
, keyform
, passin
, e
,
418 if (!(in
= BIO_new_file(infile
, inmode
))) {
420 "Can't open input file %s\n", infile
);
423 } else in
= BIO_new_fp(stdin
, BIO_NOCLOSE
);
426 if (!(out
= BIO_new_file(outfile
, outmode
))) {
428 "Can't open output file %s\n", outfile
);
432 out
= BIO_new_fp(stdout
, BIO_NOCLOSE
);
433 #ifdef OPENSSL_SYS_VMS
435 BIO
*tmpbio
= BIO_new(BIO_f_linebuffer());
436 out
= BIO_push(tmpbio
, out
);
441 if(operation
== SMIME_VERIFY
) {
442 if(!(store
= setup_verify(bio_err
, CAfile
, CApath
))) goto end
;
443 X509_STORE_set_flags(store
, store_flags
);
449 if(operation
== SMIME_ENCRYPT
) {
450 p7
= PKCS7_encrypt(encerts
, in
, cipher
, flags
);
451 } else if(operation
== SMIME_SIGN
) {
452 p7
= PKCS7_sign(signer
, key
, other
, in
, flags
);
455 if(informat
== FORMAT_SMIME
)
456 p7
= SMIME_read_PKCS7(in
, &indata
);
457 else if(informat
== FORMAT_PEM
)
458 p7
= PEM_read_bio_PKCS7(in
, NULL
, NULL
, NULL
);
459 else if(informat
== FORMAT_ASN1
)
460 p7
= d2i_PKCS7_bio(in
, NULL
);
462 BIO_printf(bio_err
, "Bad input format for PKCS#7 file\n");
467 BIO_printf(bio_err
, "Error reading S/MIME message\n");
472 if(!(indata
= BIO_new_file(contfile
, "rb"))) {
473 BIO_printf(bio_err
, "Can't read content file %s\n", contfile
);
480 BIO_printf(bio_err
, "Error creating PKCS#7 structure\n");
485 if(operation
== SMIME_DECRYPT
) {
486 if(!PKCS7_decrypt(p7
, key
, recip
, out
, flags
)) {
487 BIO_printf(bio_err
, "Error decrypting PKCS#7 structure\n");
490 } else if(operation
== SMIME_VERIFY
) {
491 STACK_OF(X509
) *signers
;
492 if(PKCS7_verify(p7
, other
, store
, indata
, out
, flags
)) {
493 BIO_printf(bio_err
, "Verification Successful\n");
495 BIO_printf(bio_err
, "Verification Failure\n");
498 signers
= PKCS7_get0_signers(p7
, other
, flags
);
499 if(!save_certs(signerfile
, signers
)) {
500 BIO_printf(bio_err
, "Error writing signers to %s\n",
505 sk_X509_free(signers
);
506 } else if(operation
== SMIME_PK7OUT
) {
507 PEM_write_bio_PKCS7(out
, p7
);
509 if(to
) BIO_printf(out
, "To: %s\n", to
);
510 if(from
) BIO_printf(out
, "From: %s\n", from
);
511 if(subject
) BIO_printf(out
, "Subject: %s\n", subject
);
512 if(outformat
== FORMAT_SMIME
)
513 SMIME_write_PKCS7(out
, p7
, in
, flags
);
514 else if(outformat
== FORMAT_PEM
)
515 PEM_write_bio_PKCS7(out
,p7
);
516 else if(outformat
== FORMAT_ASN1
)
517 i2d_PKCS7_bio(out
,p7
);
519 BIO_printf(bio_err
, "Bad output format for PKCS#7 file\n");
526 app_RAND_write_file(NULL
, bio_err
);
527 if(ret
) ERR_print_errors(bio_err
);
528 sk_X509_pop_free(encerts
, X509_free
);
529 sk_X509_pop_free(other
, X509_free
);
530 X509_STORE_free(store
);
539 if(passin
) OPENSSL_free(passin
);
543 static int save_certs(char *signerfile
, STACK_OF(X509
) *signers
)
547 if(!signerfile
) return 1;
548 tmp
= BIO_new_file(signerfile
, "w");
550 for(i
= 0; i
< sk_X509_num(signers
); i
++)
551 PEM_write_bio_X509(tmp
, sk_X509_value(signers
, i
));