/* crypto/pkcs7/enc.c */

 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

  * All rights reserved.

  *

  * This package is an SSL implementation written

  * by Eric Young (eay@cryptsoft.com).

  * The implementation was written so as to conform with Netscapes SSL.

  * 

  * This library is free for commercial and non-commercial use as long as

  * the following conditions are aheared to.  The following conditions

  * apply to all code found in this distribution, be it the RC4, RSA,

  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

  * included with this distribution is covered by the same copyright terms

  * except that the holder is Tim Hudson (tjh@cryptsoft.com).

  * 

  * Copyright remains Eric Young's, and as such any Copyright notices in

  * the code are not to be removed.

  * If this package is used in a product, Eric Young should be given attribution

  * as the author of the parts of the library used.

  * This can be in the form of a textual message at program startup or

  * in documentation (online or textual) provided with the package.

  * 

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions

  * are met:

  * 1. Redistributions of source code must retain the copyright

  *    notice, this list of conditions and the following disclaimer.

  * 2. Redistributions in binary form must reproduce the above copyright

  *    notice, this list of conditions and the following disclaimer in the

  *    documentation and/or other materials provided with the distribution.

  * 3. All advertising materials mentioning features or use of this software

  *    must display the following acknowledgement:

  *    "This product includes cryptographic software written by

  *     Eric Young (eay@cryptsoft.com)"

  *    The word 'cryptographic' can be left out if the rouines from the library

  *    being used are not cryptographic related :-).

  * 4. If you include any Windows specific code (or a derivative thereof) from 

  *    the apps directory (application code) you must include an acknowledgement:

  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

  * 

  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

  * SUCH DAMAGE.

  * 

  * The licence and distribution terms for any publically available version or

  * derivative of this code cannot be changed.  i.e. this code cannot simply be

  * copied and put under another distribution licence

  * [including the GNU Public Licence.]

  */

 #include <stdio.h>

 #include <string.h>

 #include <openssl/bio.h>

 #include <openssl/x509.h>

 #include <openssl/pem.h>

 #include <openssl/err.h>

 int main(argc,argv)

 int argc;

 char *argv[];

 	{

 	X509 *x509;

 	PKCS7 *p7;

 	BIO *in;

 	BIO *data,*p7bio;

 	char buf[1024*4];

 	int i;

 	int nodetach=1;

 	char *keyfile = NULL;

 	const EVP_CIPHER *cipher=NULL;

 	STACK_OF(X509) *recips=NULL;

 	OpenSSL_add_all_algorithms();

 	data=BIO_new(BIO_s_file());

 	while(argc > 1)

 		{

 		if (strcmp(argv[1],"-nd") == 0)

 			{

 			nodetach=1;

 			argv++; argc--;

 			}

 		else if ((strcmp(argv[1],"-c") == 0) && (argc >= 2)) {

 			if(!(cipher = EVP_get_cipherbyname(argv[2]))) {

 				fprintf(stderr, "Unknown cipher %s\n", argv[2]);

 				goto err;

 			}

 			argc-=2;

 			argv+=2;

 		} else if ((strcmp(argv[1],"-k") == 0) && (argc >= 2)) {

 			keyfile = argv[2];

 			argc-=2;

 			argv+=2;

 			if (!(in=BIO_new_file(keyfile,"r"))) goto err;

 			if (!(x509=PEM_read_bio_X509(in,NULL,NULL,NULL)))

 				goto err;

 			if(!recips) recips = sk_X509_new_null();

 			sk_X509_push(recips, x509);

 			BIO_free(in);

 		} else break;

 	}

 	if(!recips) {

 		fprintf(stderr, "No recipients\n");

 		goto err;

 	}

 	if (!BIO_read_filename(data,argv[1])) goto err;

 	p7=PKCS7_new();

 #if 0

 	BIO_reset(in);

 	if ((pkey=PEM_read_bio_PrivateKey(in,NULL,NULL)) == NULL) goto err;

 	BIO_free(in);

 	PKCS7_set_type(p7,NID_pkcs7_signedAndEnveloped);

 	if (PKCS7_add_signature(p7,x509,pkey,EVP_sha1()) == NULL) goto err;

 	/* we may want to add more */

 	PKCS7_add_certificate(p7,x509);

 #else

 	PKCS7_set_type(p7,NID_pkcs7_enveloped);

 #endif

 	if(!cipher)	{

 #ifndef OPENSSL_NO_DES

 		cipher = EVP_des_ede3_cbc();

 #else

 		fprintf(stderr, "No cipher selected\n");

 		goto err;

 #endif

 	}

 	if (!PKCS7_set_cipher(p7,cipher)) goto err;

 	for(i = 0; i < sk_X509_num(recips); i++) {

 		if (!PKCS7_add_recipient(p7,sk_X509_value(recips, i))) goto err;

 	}

 	sk_X509_pop_free(recips, X509_free);

 	/* Set the content of the signed to 'data' */

 	/* PKCS7_content_new(p7,NID_pkcs7_data); not used in envelope */

 	/* could be used, but not in this version :-)

 	if (!nodetach) PKCS7_set_detached(p7,1);

 	*/

 	if ((p7bio=PKCS7_dataInit(p7,NULL)) == NULL) goto err;

 	for (;;)

 		{

 		i=BIO_read(data,buf,sizeof(buf));

 		if (i <= 0) break;

 		BIO_write(p7bio,buf,i);

 		}

 	BIO_flush(p7bio);

 	if (!PKCS7_dataFinal(p7,p7bio)) goto err;

 	BIO_free(p7bio);

 	PEM_write_PKCS7(stdout,p7);

 	PKCS7_free(p7);

 	exit(0);

 err:

 	ERR_load_crypto_strings();

 	ERR_print_errors_fp(stderr);

 	exit(1);

 	}