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 const 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;
123 if ((bio_err = BIO_new(BIO_s_file())) != NULL)
124 BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
127 if (!load_config(bio_err, NULL))
130 while (!badarg && *args && *args[0] == '-')
132 if (!strcmp (*args, "-encrypt"))
133 operation = SMIME_ENCRYPT;
134 else if (!strcmp (*args, "-decrypt"))
135 operation = SMIME_DECRYPT;
136 else if (!strcmp (*args, "-sign"))
137 operation = SMIME_SIGN;
138 else if (!strcmp (*args, "-verify"))
139 operation = SMIME_VERIFY;
140 else if (!strcmp (*args, "-pk7out"))
141 operation = SMIME_PK7OUT;
142 #ifndef OPENSSL_NO_DES
143 else if (!strcmp (*args, "-des3"))
144 cipher = EVP_des_ede3_cbc();
145 else if (!strcmp (*args, "-des"))
146 cipher = EVP_des_cbc();
148 #ifndef OPENSSL_NO_SEED
149 else if (!strcmp (*args, "-seed"))
150 cipher = EVP_seed_cbc();
152 #ifndef OPENSSL_NO_RC2
153 else if (!strcmp (*args, "-rc2-40"))
154 cipher = EVP_rc2_40_cbc();
155 else if (!strcmp (*args, "-rc2-128"))
156 cipher = EVP_rc2_cbc();
157 else if (!strcmp (*args, "-rc2-64"))
158 cipher = EVP_rc2_64_cbc();
160 #ifndef OPENSSL_NO_AES
161 else if (!strcmp(*args,"-aes128"))
162 cipher = EVP_aes_128_cbc();
163 else if (!strcmp(*args,"-aes192"))
164 cipher = EVP_aes_192_cbc();
165 else if (!strcmp(*args,"-aes256"))
166 cipher = EVP_aes_256_cbc();
168 #ifndef OPENSSL_NO_CAMELLIA
169 else if (!strcmp(*args,"-camellia128"))
170 cipher = EVP_camellia_128_cbc();
171 else if (!strcmp(*args,"-camellia192"))
172 cipher = EVP_camellia_192_cbc();
173 else if (!strcmp(*args,"-camellia256"))
174 cipher = EVP_camellia_256_cbc();
176 else if (!strcmp (*args, "-text"))
178 else if (!strcmp (*args, "-nointern"))
179 flags |= PKCS7_NOINTERN;
180 else if (!strcmp (*args, "-noverify"))
181 flags |= PKCS7_NOVERIFY;
182 else if (!strcmp (*args, "-nochain"))
183 flags |= PKCS7_NOCHAIN;
184 else if (!strcmp (*args, "-nocerts"))
185 flags |= PKCS7_NOCERTS;
186 else if (!strcmp (*args, "-noattr"))
187 flags |= PKCS7_NOATTR;
188 else if (!strcmp (*args, "-nodetach"))
189 flags &= ~PKCS7_DETACHED;
190 else if (!strcmp (*args, "-nosmimecap"))
191 flags |= PKCS7_NOSMIMECAP;
192 else if (!strcmp (*args, "-binary"))
193 flags |= PKCS7_BINARY;
194 else if (!strcmp (*args, "-nosigs"))
195 flags |= PKCS7_NOSIGS;
196 else if (!strcmp (*args, "-nooldmime"))
197 flags |= PKCS7_NOOLDMIMETYPE;
198 else if (!strcmp (*args, "-crlfeol"))
199 flags |= PKCS7_CRLFEOL;
200 else if (!strcmp(*args,"-rand"))
211 #ifndef OPENSSL_NO_ENGINE
212 else if (!strcmp(*args,"-engine"))
222 else if (!strcmp(*args,"-passin"))
232 else if (!strcmp (*args, "-to"))
242 else if (!strcmp (*args, "-from"))
251 else if (!strcmp (*args, "-subject"))
261 else if (!strcmp (*args, "-signer"))
271 else if (!strcmp (*args, "-recip"))
280 else if (!strcmp (*args, "-inkey"))
290 else if (!strcmp (*args, "-keyform"))
295 keyform = str2fmt(*args);
300 else if (!strcmp (*args, "-certfile"))
310 else if (!strcmp (*args, "-CAfile"))
320 else if (!strcmp (*args, "-CApath"))
330 else if (!strcmp (*args, "-in"))
340 else if (!strcmp (*args, "-inform"))
345 informat = str2fmt(*args);
350 else if (!strcmp (*args, "-outform"))
355 outformat = str2fmt(*args);
360 else if (!strcmp (*args, "-out"))
370 else if (!strcmp (*args, "-content"))
380 else if (args_verify(&args, NULL, &badarg, bio_err, &vpm))
388 if (operation == SMIME_SIGN)
392 BIO_printf(bio_err, "No signer certificate specified\n");
397 else if (operation == SMIME_DECRYPT)
399 if (!recipfile && !keyfile)
401 BIO_printf(bio_err, "No recipient certificate or key specified\n");
405 else if (operation == SMIME_ENCRYPT)
409 BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
419 BIO_printf (bio_err, "Usage smime [options] cert.pem ...\n");
420 BIO_printf (bio_err, "where options are\n");
421 BIO_printf (bio_err, "-encrypt encrypt message\n");
422 BIO_printf (bio_err, "-decrypt decrypt encrypted message\n");
423 BIO_printf (bio_err, "-sign sign message\n");
424 BIO_printf (bio_err, "-verify verify signed message\n");
425 BIO_printf (bio_err, "-pk7out output PKCS#7 structure\n");
426 #ifndef OPENSSL_NO_DES
427 BIO_printf (bio_err, "-des3 encrypt with triple DES\n");
428 BIO_printf (bio_err, "-des encrypt with DES\n");
430 #ifndef OPENSSL_NO_SEED
431 BIO_printf (bio_err, "-seed encrypt with SEED\n");
433 #ifndef OPENSSL_NO_RC2
434 BIO_printf (bio_err, "-rc2-40 encrypt with RC2-40 (default)\n");
435 BIO_printf (bio_err, "-rc2-64 encrypt with RC2-64\n");
436 BIO_printf (bio_err, "-rc2-128 encrypt with RC2-128\n");
438 #ifndef OPENSSL_NO_AES
439 BIO_printf (bio_err, "-aes128, -aes192, -aes256\n");
440 BIO_printf (bio_err, " encrypt PEM output with cbc aes\n");
442 #ifndef OPENSSL_NO_CAMELLIA
443 BIO_printf (bio_err, "-camellia128, -camellia192, -camellia256\n");
444 BIO_printf (bio_err, " encrypt PEM output with cbc camellia\n");
446 BIO_printf (bio_err, "-nointern don't search certificates in message for signer\n");
447 BIO_printf (bio_err, "-nosigs don't verify message signature\n");
448 BIO_printf (bio_err, "-noverify don't verify signers certificate\n");
449 BIO_printf (bio_err, "-nocerts don't include signers certificate when signing\n");
450 BIO_printf (bio_err, "-nodetach use opaque signing\n");
451 BIO_printf (bio_err, "-noattr don't include any signed attributes\n");
452 BIO_printf (bio_err, "-binary don't translate message to text\n");
453 BIO_printf (bio_err, "-certfile file other certificates file\n");
454 BIO_printf (bio_err, "-signer file signer certificate file\n");
455 BIO_printf (bio_err, "-recip file recipient certificate file for decryption\n");
456 BIO_printf (bio_err, "-in file input file\n");
457 BIO_printf (bio_err, "-inform arg input format SMIME (default), PEM or DER\n");
458 BIO_printf (bio_err, "-inkey file input private key (if not signer or recipient)\n");
459 BIO_printf (bio_err, "-keyform arg input private key format (PEM or ENGINE)\n");
460 BIO_printf (bio_err, "-out file output file\n");
461 BIO_printf (bio_err, "-outform arg output format SMIME (default), PEM or DER\n");
462 BIO_printf (bio_err, "-content file supply or override content for detached signature\n");
463 BIO_printf (bio_err, "-to addr to address\n");
464 BIO_printf (bio_err, "-from ad from address\n");
465 BIO_printf (bio_err, "-subject s subject\n");
466 BIO_printf (bio_err, "-text include or delete text MIME headers\n");
467 BIO_printf (bio_err, "-CApath dir trusted certificates directory\n");
468 BIO_printf (bio_err, "-CAfile file trusted certificates file\n");
469 BIO_printf (bio_err, "-crl_check check revocation status of signer's certificate using CRLs\n");
470 BIO_printf (bio_err, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n");
471 #ifndef OPENSSL_NO_ENGINE
472 BIO_printf (bio_err, "-engine e use engine e, possibly a hardware device.\n");
474 BIO_printf (bio_err, "-passin arg input file pass phrase source\n");
475 BIO_printf(bio_err, "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
476 BIO_printf(bio_err, " load the file (or the files in the directory) into\n");
477 BIO_printf(bio_err, " the random number generator\n");
478 BIO_printf (bio_err, "cert.pem recipient certificate(s) for encryption\n");
482 #ifndef OPENSSL_NO_ENGINE
483 e = setup_engine(bio_err, engine, 0);
486 if (!app_passwd(bio_err, passargin, NULL, &passin, NULL))
488 BIO_printf(bio_err, "Error getting password\n");
494 app_RAND_load_file(NULL, bio_err, (inrand != NULL));
496 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
497 app_RAND_load_files(inrand));
502 if (operation != SMIME_SIGN)
503 flags &= ~PKCS7_DETACHED;
505 if (operation & SMIME_OP)
507 if (flags & PKCS7_BINARY)
509 if (outformat == FORMAT_ASN1)
514 if (flags & PKCS7_BINARY)
516 if (informat == FORMAT_ASN1)
520 if (operation == SMIME_ENCRYPT)
524 #ifndef OPENSSL_NO_RC2
525 cipher = EVP_rc2_40_cbc();
527 BIO_printf(bio_err, "No cipher selected\n");
531 encerts = sk_X509_new_null();
534 if (!(cert = load_cert(bio_err,*args,FORMAT_PEM,
535 NULL, e, "recipient certificate file")))
537 #if 0 /* An appropriate message is already printed */
538 BIO_printf(bio_err, "Can't read recipient certificate file %s\n", *args);
542 sk_X509_push(encerts, cert);
548 if (signerfile && (operation == SMIME_SIGN))
550 if (!(signer = load_cert(bio_err,signerfile,FORMAT_PEM, NULL,
551 e, "signer certificate")))
553 #if 0 /* An appropri message has already been printed */
554 BIO_printf(bio_err, "Can't read signer certificate file %s\n", signerfile);
562 if (!(other = load_certs(bio_err,certfile,FORMAT_PEM, NULL,
563 e, "certificate file")))
565 #if 0 /* An appropriate message has already been printed */
566 BIO_printf(bio_err, "Can't read certificate file %s\n", certfile);
568 ERR_print_errors(bio_err);
573 if (recipfile && (operation == SMIME_DECRYPT))
575 if (!(recip = load_cert(bio_err,recipfile,FORMAT_PEM,NULL,
576 e, "recipient certificate file")))
578 #if 0 /* An appropriate message has alrady been printed */
579 BIO_printf(bio_err, "Can't read recipient certificate file %s\n", recipfile);
581 ERR_print_errors(bio_err);
586 if (operation == SMIME_DECRYPT)
591 else if (operation == SMIME_SIGN)
594 keyfile = signerfile;
600 key = load_key(bio_err, keyfile, keyform, 0, passin, e,
608 if (!(in = BIO_new_file(infile, inmode)))
611 "Can't open input file %s\n", infile);
616 in = BIO_new_fp(stdin, BIO_NOCLOSE);
620 if (!(out = BIO_new_file(outfile, outmode)))
623 "Can't open output file %s\n", outfile);
629 out = BIO_new_fp(stdout, BIO_NOCLOSE);
630 #ifdef OPENSSL_SYS_VMS
632 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
633 out = BIO_push(tmpbio, out);
638 if (operation == SMIME_VERIFY)
640 if (!(store = setup_verify(bio_err, CAfile, CApath)))
642 X509_STORE_set_verify_cb_func(store, smime_cb);
644 X509_STORE_set1_param(store, vpm);
650 if (operation == SMIME_ENCRYPT)
651 p7 = PKCS7_encrypt(encerts, in, cipher, flags);
652 else if (operation == SMIME_SIGN)
654 /* If detached data and SMIME output enable partial
657 if ((flags & PKCS7_DETACHED) && (outformat == FORMAT_SMIME))
658 flags |= PKCS7_STREAM;
659 p7 = PKCS7_sign(signer, key, other, in, flags);
663 if (informat == FORMAT_SMIME)
664 p7 = SMIME_read_PKCS7(in, &indata);
665 else if (informat == FORMAT_PEM)
666 p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
667 else if (informat == FORMAT_ASN1)
668 p7 = d2i_PKCS7_bio(in, NULL);
671 BIO_printf(bio_err, "Bad input format for PKCS#7 file\n");
677 BIO_printf(bio_err, "Error reading S/MIME message\n");
683 if (!(indata = BIO_new_file(contfile, "rb")))
685 BIO_printf(bio_err, "Can't read content file %s\n", contfile);
693 BIO_printf(bio_err, "Error creating PKCS#7 structure\n");
698 if (operation == SMIME_DECRYPT)
700 if (!PKCS7_decrypt(p7, key, recip, out, flags))
702 BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");
706 else if (operation == SMIME_VERIFY)
708 STACK_OF(X509) *signers;
709 if (PKCS7_verify(p7, other, store, indata, out, flags))
710 BIO_printf(bio_err, "Verification successful\n");
713 BIO_printf(bio_err, "Verification failure\n");
716 signers = PKCS7_get0_signers(p7, other, flags);
717 if (!save_certs(signerfile, signers))
719 BIO_printf(bio_err, "Error writing signers to %s\n",
724 sk_X509_free(signers);
726 else if (operation == SMIME_PK7OUT)
727 PEM_write_bio_PKCS7(out, p7);
731 BIO_printf(out, "To: %s\n", to);
733 BIO_printf(out, "From: %s\n", from);
735 BIO_printf(out, "Subject: %s\n", subject);
736 if (outformat == FORMAT_SMIME)
737 SMIME_write_PKCS7(out, p7, in, flags);
738 else if (outformat == FORMAT_PEM)
739 PEM_write_bio_PKCS7(out,p7);
740 else if (outformat == FORMAT_ASN1)
741 i2d_PKCS7_bio(out,p7);
744 BIO_printf(bio_err, "Bad output format for PKCS#7 file\n");
751 app_RAND_write_file(NULL, bio_err);
752 if (ret) ERR_print_errors(bio_err);
753 sk_X509_pop_free(encerts, X509_free);
754 sk_X509_pop_free(other, X509_free);
756 X509_VERIFY_PARAM_free(vpm);
757 X509_STORE_free(store);
766 if (passin) OPENSSL_free(passin);
770 static int save_certs(char *signerfile, STACK_OF(X509) *signers)
776 tmp = BIO_new_file(signerfile, "w");
778 for(i = 0; i < sk_X509_num(signers); i++)
779 PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
785 /* Minimal callback just to output policy info (if any) */
787 static int smime_cb(int ok, X509_STORE_CTX *ctx)
791 error = X509_STORE_CTX_get_error(ctx);
793 if ((error != X509_V_ERR_NO_EXPLICIT_POLICY)
794 && ((error != X509_V_OK) || (ok != 2)))
797 policies_print(NULL, ctx);