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 /* S/MIME utility function */
64 #include <openssl/crypto.h>
65 #include <openssl/pem.h>
66 #include <openssl/err.h>
67 #include <openssl/x509_vfy.h>
68 #include <openssl/x509v3.h>
71 #define PROG smime_main
72 static int save_certs(char *signerfile, STACK_OF(X509) *signers);
73 static int smime_cb(int ok, X509_STORE_CTX *ctx);
76 #define SMIME_ENCRYPT (1 | SMIME_OP)
77 #define SMIME_DECRYPT 2
78 #define SMIME_SIGN (3 | SMIME_OP)
79 #define SMIME_VERIFY 4
80 #define SMIME_PK7OUT 5
82 int MAIN(int, char **);
84 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, *contfile=NULL;
94 const 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;
108 int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;
109 int keyform = FORMAT_PEM;
110 #ifndef OPENSSL_NO_ENGINE
114 X509_VERIFY_PARAM *vpm = NULL;
122 if ((bio_err = BIO_new(BIO_s_file())) != NULL)
123 BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
125 if (!load_config(bio_err, NULL))
128 while (!badarg && *args && *args[0] == '-') {
129 if (!strcmp (*args, "-encrypt")) operation = SMIME_ENCRYPT;
130 else if (!strcmp (*args, "-decrypt")) operation = SMIME_DECRYPT;
131 else if (!strcmp (*args, "-sign")) operation = SMIME_SIGN;
132 else if (!strcmp (*args, "-verify")) operation = SMIME_VERIFY;
133 else if (!strcmp (*args, "-pk7out")) operation = SMIME_PK7OUT;
134 #ifndef OPENSSL_NO_DES
135 else if (!strcmp (*args, "-des3"))
136 cipher = EVP_des_ede3_cbc();
137 else if (!strcmp (*args, "-des"))
138 cipher = EVP_des_cbc();
140 #ifndef OPENSSL_NO_RC2
141 else if (!strcmp (*args, "-rc2-40"))
142 cipher = EVP_rc2_40_cbc();
143 else if (!strcmp (*args, "-rc2-128"))
144 cipher = EVP_rc2_cbc();
145 else if (!strcmp (*args, "-rc2-64"))
146 cipher = EVP_rc2_64_cbc();
148 #ifndef OPENSSL_NO_AES
149 else if (!strcmp(*args,"-aes128"))
150 cipher = EVP_aes_128_cbc();
151 else if (!strcmp(*args,"-aes192"))
152 cipher = EVP_aes_192_cbc();
153 else if (!strcmp(*args,"-aes256"))
154 cipher = EVP_aes_256_cbc();
156 else if (!strcmp (*args, "-text"))
158 else if (!strcmp (*args, "-nointern"))
159 flags |= PKCS7_NOINTERN;
160 else if (!strcmp (*args, "-noverify"))
161 flags |= PKCS7_NOVERIFY;
162 else if (!strcmp (*args, "-nochain"))
163 flags |= PKCS7_NOCHAIN;
164 else if (!strcmp (*args, "-nocerts"))
165 flags |= PKCS7_NOCERTS;
166 else if (!strcmp (*args, "-noattr"))
167 flags |= PKCS7_NOATTR;
168 else if (!strcmp (*args, "-nodetach"))
169 flags &= ~PKCS7_DETACHED;
170 else if (!strcmp (*args, "-nosmimecap"))
171 flags |= PKCS7_NOSMIMECAP;
172 else if (!strcmp (*args, "-binary"))
173 flags |= PKCS7_BINARY;
174 else if (!strcmp (*args, "-nosigs"))
175 flags |= PKCS7_NOSIGS;
176 else if (!strcmp (*args, "-nooldmime"))
177 flags |= PKCS7_NOOLDMIMETYPE;
178 else if (!strcmp (*args, "-crlfeol"))
179 flags |= PKCS7_CRLFEOL;
180 else if (!strcmp(*args,"-rand")) {
186 #ifndef OPENSSL_NO_ENGINE
187 } else if (!strcmp(*args,"-engine")) {
193 } else if (!strcmp(*args,"-passin")) {
198 } else if (!strcmp (*args, "-to")) {
203 } else if (!strcmp (*args, "-from")) {
208 } else if (!strcmp (*args, "-subject")) {
213 } else if (!strcmp (*args, "-signer")) {
218 } else if (!strcmp (*args, "-recip")) {
223 } else if (!strcmp (*args, "-inkey")) {
228 } else if (!strcmp (*args, "-keyform")) {
231 keyform = str2fmt(*args);
233 } else if (!strcmp (*args, "-certfile")) {
238 } else if (!strcmp (*args, "-CAfile")) {
243 } else if (!strcmp (*args, "-CApath")) {
248 } else if (!strcmp (*args, "-in")) {
253 } else if (!strcmp (*args, "-inform")) {
256 informat = str2fmt(*args);
258 } else if (!strcmp (*args, "-outform")) {
261 outformat = str2fmt(*args);
263 } else if (!strcmp (*args, "-out")) {
268 } else if (!strcmp (*args, "-content")) {
273 } else if (args_verify(&args, &badarg, bio_err, &vpm))
281 if(operation == SMIME_SIGN) {
283 BIO_printf(bio_err, "No signer certificate specified\n");
287 } else if(operation == SMIME_DECRYPT) {
289 BIO_printf(bio_err, "No recipient certificate and key specified\n");
292 } else if(operation == SMIME_ENCRYPT) {
294 BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
298 } else if(!operation) badarg = 1;
301 BIO_printf (bio_err, "Usage smime [options] cert.pem ...\n");
302 BIO_printf (bio_err, "where options are\n");
303 BIO_printf (bio_err, "-encrypt encrypt message\n");
304 BIO_printf (bio_err, "-decrypt decrypt encrypted message\n");
305 BIO_printf (bio_err, "-sign sign message\n");
306 BIO_printf (bio_err, "-verify verify signed message\n");
307 BIO_printf (bio_err, "-pk7out output PKCS#7 structure\n");
308 #ifndef OPENSSL_NO_DES
309 BIO_printf (bio_err, "-des3 encrypt with triple DES\n");
310 BIO_printf (bio_err, "-des encrypt with DES\n");
312 #ifndef OPENSSL_NO_RC2
313 BIO_printf (bio_err, "-rc2-40 encrypt with RC2-40 (default)\n");
314 BIO_printf (bio_err, "-rc2-64 encrypt with RC2-64\n");
315 BIO_printf (bio_err, "-rc2-128 encrypt with RC2-128\n");
317 #ifndef OPENSSL_NO_AES
318 BIO_printf (bio_err, "-aes128, -aes192, -aes256\n");
319 BIO_printf (bio_err, " encrypt PEM output with cbc aes\n");
321 BIO_printf (bio_err, "-nointern don't search certificates in message for signer\n");
322 BIO_printf (bio_err, "-nosigs don't verify message signature\n");
323 BIO_printf (bio_err, "-noverify don't verify signers certificate\n");
324 BIO_printf (bio_err, "-nocerts don't include signers certificate when signing\n");
325 BIO_printf (bio_err, "-nodetach use opaque signing\n");
326 BIO_printf (bio_err, "-noattr don't include any signed attributes\n");
327 BIO_printf (bio_err, "-binary don't translate message to text\n");
328 BIO_printf (bio_err, "-certfile file other certificates file\n");
329 BIO_printf (bio_err, "-signer file signer certificate file\n");
330 BIO_printf (bio_err, "-recip file recipient certificate file for decryption\n");
331 BIO_printf (bio_err, "-in file input file\n");
332 BIO_printf (bio_err, "-inform arg input format SMIME (default), PEM or DER\n");
333 BIO_printf (bio_err, "-inkey file input private key (if not signer or recipient)\n");
334 BIO_printf (bio_err, "-keyform arg input private key format (PEM or ENGINE)\n");
335 BIO_printf (bio_err, "-out file output file\n");
336 BIO_printf (bio_err, "-outform arg output format SMIME (default), PEM or DER\n");
337 BIO_printf (bio_err, "-content file supply or override content for detached signature\n");
338 BIO_printf (bio_err, "-to addr to address\n");
339 BIO_printf (bio_err, "-from ad from address\n");
340 BIO_printf (bio_err, "-subject s subject\n");
341 BIO_printf (bio_err, "-text include or delete text MIME headers\n");
342 BIO_printf (bio_err, "-CApath dir trusted certificates directory\n");
343 BIO_printf (bio_err, "-CAfile file trusted certificates file\n");
344 BIO_printf (bio_err, "-crl_check check revocation status of signer's certificate using CRLs\n");
345 BIO_printf (bio_err, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n");
346 #ifndef OPENSSL_NO_ENGINE
347 BIO_printf (bio_err, "-engine e use engine e, possibly a hardware device.\n");
349 BIO_printf (bio_err, "-passin arg input file pass phrase source\n");
350 BIO_printf(bio_err, "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
351 BIO_printf(bio_err, " load the file (or the files in the directory) into\n");
352 BIO_printf(bio_err, " the random number generator\n");
353 BIO_printf (bio_err, "cert.pem recipient certificate(s) for encryption\n");
357 #ifndef OPENSSL_NO_ENGINE
358 e = setup_engine(bio_err, engine, 0);
361 if(!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
362 BIO_printf(bio_err, "Error getting password\n");
367 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
369 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
370 app_RAND_load_files(inrand));
375 if(operation != SMIME_SIGN) flags &= ~PKCS7_DETACHED;
377 if(operation & SMIME_OP) {
378 if(flags & PKCS7_BINARY) inmode = "rb";
379 if(outformat == FORMAT_ASN1) outmode = "wb";
381 if(flags & PKCS7_BINARY) outmode = "wb";
382 if(informat == FORMAT_ASN1) inmode = "rb";
385 if(operation == SMIME_ENCRYPT) {
387 #ifndef OPENSSL_NO_RC2
388 cipher = EVP_rc2_40_cbc();
390 BIO_printf(bio_err, "No cipher selected\n");
394 encerts = sk_X509_new_null();
396 if(!(cert = load_cert(bio_err,*args,FORMAT_PEM,
397 NULL, e, "recipient certificate file"))) {
398 #if 0 /* An appropriate message is already printed */
399 BIO_printf(bio_err, "Can't read recipient certificate file %s\n", *args);
403 sk_X509_push(encerts, cert);
409 if(signerfile && (operation == SMIME_SIGN)) {
410 if(!(signer = load_cert(bio_err,signerfile,FORMAT_PEM, NULL,
411 e, "signer certificate"))) {
412 #if 0 /* An appropri message has already been printed */
413 BIO_printf(bio_err, "Can't read signer certificate file %s\n", signerfile);
420 if(!(other = load_certs(bio_err,certfile,FORMAT_PEM, NULL,
421 e, "certificate file"))) {
422 #if 0 /* An appropriate message has already been printed */
423 BIO_printf(bio_err, "Can't read certificate file %s\n", certfile);
425 ERR_print_errors(bio_err);
430 if(recipfile && (operation == SMIME_DECRYPT)) {
431 if(!(recip = load_cert(bio_err,recipfile,FORMAT_PEM,NULL,
432 e, "recipient certificate file"))) {
433 #if 0 /* An appropriate message has alrady been printed */
434 BIO_printf(bio_err, "Can't read recipient certificate file %s\n", recipfile);
436 ERR_print_errors(bio_err);
441 if(operation == SMIME_DECRYPT) {
442 if(!keyfile) keyfile = recipfile;
443 } else if(operation == SMIME_SIGN) {
444 if(!keyfile) keyfile = signerfile;
445 } else keyfile = NULL;
448 key = load_key(bio_err, keyfile, keyform, 0, passin, e,
456 if (!(in = BIO_new_file(infile, inmode))) {
458 "Can't open input file %s\n", infile);
461 } else in = BIO_new_fp(stdin, BIO_NOCLOSE);
464 if (!(out = BIO_new_file(outfile, outmode))) {
466 "Can't open output file %s\n", outfile);
470 out = BIO_new_fp(stdout, BIO_NOCLOSE);
471 #ifdef OPENSSL_SYS_VMS
473 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
474 out = BIO_push(tmpbio, out);
479 if(operation == SMIME_VERIFY) {
480 if(!(store = setup_verify(bio_err, CAfile, CApath))) goto end;
481 X509_STORE_set_verify_cb_func(store, smime_cb);
483 X509_STORE_set1_param(store, vpm);
489 if(operation == SMIME_ENCRYPT) {
490 p7 = PKCS7_encrypt(encerts, in, cipher, flags);
491 } else if(operation == SMIME_SIGN) {
492 /* If detached data and SMIME output enable partial
495 if ((flags & PKCS7_DETACHED) && (outformat == FORMAT_SMIME))
496 flags |= PKCS7_STREAM;
497 p7 = PKCS7_sign(signer, key, other, in, flags);
498 /* Don't need to rewind for partial signing */
499 if (!(flags & PKCS7_STREAM) && (BIO_reset(in) != 0)) {
500 BIO_printf(bio_err, "Can't rewind input file\n");
504 if(informat == FORMAT_SMIME)
505 p7 = SMIME_read_PKCS7(in, &indata);
506 else if(informat == FORMAT_PEM)
507 p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
508 else if(informat == FORMAT_ASN1)
509 p7 = d2i_PKCS7_bio(in, NULL);
511 BIO_printf(bio_err, "Bad input format for PKCS#7 file\n");
516 BIO_printf(bio_err, "Error reading S/MIME message\n");
521 if(!(indata = BIO_new_file(contfile, "rb"))) {
522 BIO_printf(bio_err, "Can't read content file %s\n", contfile);
529 BIO_printf(bio_err, "Error creating PKCS#7 structure\n");
534 if(operation == SMIME_DECRYPT) {
535 if(!PKCS7_decrypt(p7, key, recip, out, flags)) {
536 BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");
539 } else if(operation == SMIME_VERIFY) {
540 STACK_OF(X509) *signers;
541 if(PKCS7_verify(p7, other, store, indata, out, flags)) {
542 BIO_printf(bio_err, "Verification successful\n");
544 BIO_printf(bio_err, "Verification failure\n");
547 signers = PKCS7_get0_signers(p7, other, flags);
548 if(!save_certs(signerfile, signers)) {
549 BIO_printf(bio_err, "Error writing signers to %s\n",
554 sk_X509_free(signers);
555 } else if(operation == SMIME_PK7OUT) {
556 PEM_write_bio_PKCS7(out, p7);
558 if(to) BIO_printf(out, "To: %s\n", to);
559 if(from) BIO_printf(out, "From: %s\n", from);
560 if(subject) BIO_printf(out, "Subject: %s\n", subject);
561 if(outformat == FORMAT_SMIME)
562 SMIME_write_PKCS7(out, p7, in, flags);
563 else if(outformat == FORMAT_PEM)
564 PEM_write_bio_PKCS7(out,p7);
565 else if(outformat == FORMAT_ASN1)
566 i2d_PKCS7_bio(out,p7);
568 BIO_printf(bio_err, "Bad output format for PKCS#7 file\n");
575 app_RAND_write_file(NULL, bio_err);
576 if(ret) ERR_print_errors(bio_err);
577 sk_X509_pop_free(encerts, X509_free);
578 sk_X509_pop_free(other, X509_free);
580 X509_VERIFY_PARAM_free(vpm);
581 X509_STORE_free(store);
590 if(passin) OPENSSL_free(passin);
594 static int save_certs(char *signerfile, STACK_OF(X509) *signers)
598 if(!signerfile) return 1;
599 tmp = BIO_new_file(signerfile, "w");
601 for(i = 0; i < sk_X509_num(signers); i++)
602 PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
608 static void nodes_print(BIO *out, char *name, STACK_OF(X509_POLICY_NODE) *nodes)
610 X509_POLICY_NODE *node;
612 BIO_printf(out, "%s Policies:", name);
616 for (i = 0; i < sk_X509_POLICY_NODE_num(nodes); i++)
618 node = sk_X509_POLICY_NODE_value(nodes, i);
619 X509_POLICY_NODE_print(out, node, 2);
623 BIO_puts(out, " <empty>\n");
626 static void policies_print(BIO *out, X509_STORE_CTX *ctx)
628 X509_POLICY_TREE *tree;
630 tree = X509_STORE_CTX_get0_policy_tree(ctx);
631 explicit = X509_STORE_CTX_get_explicit_policy(ctx);
633 BIO_printf(out, "Require explicit Policy: %s\n",
634 explicit ? "True" : "False");
636 nodes_print(out, "Authority", X509_policy_tree_get0_policies(tree));
637 nodes_print(out, "User", X509_policy_tree_get0_user_policies(tree));
640 /* Minimal callback just to output policy info (if any) */
642 static int smime_cb(int ok, X509_STORE_CTX *ctx)
647 error = X509_STORE_CTX_get_error(ctx);
649 if ((error != X509_V_ERR_NO_EXPLICIT_POLICY)
650 && ((error != X509_V_OK) || (ok != 2)))
653 out = BIO_new_fp(stderr, BIO_NOCLOSE);
655 policies_print(out, ctx);