/* 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);	}