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Name	Size	Permission	Date
cacert.pem	1.04 KB	-rw-r--r--	2019-09-10 15:16
cakey.pem	891 B	-rw-r--r--	2019-09-10 15:16
cms_comp.c	1.34 KB	-rw-r--r--	2019-09-10 15:16
cms_ddec.c	1.9 KB	-rw-r--r--	2019-09-10 15:16
cms_dec.c	1.65 KB	-rw-r--r--	2019-09-10 15:16
cms_denc.c	2.16 KB	-rw-r--r--	2019-09-10 15:16
cms_enc.c	2.02 KB	-rw-r--r--	2019-09-10 15:16
cms_sign.c	1.93 KB	-rw-r--r--	2019-09-10 15:16
cms_sign2.c	2.07 KB	-rw-r--r--	2019-09-10 15:16
cms_uncomp.c	1.21 KB	-rw-r--r--	2019-09-10 15:16
cms_ver.c	1.78 KB	-rw-r--r--	2019-09-10 15:16
comp.txt	566 B	-rw-r--r--	2019-09-10 15:16
encr.txt	65 B	-rw-r--r--	2019-09-10 15:16
sign.txt	58 B	-rw-r--r--	2019-09-10 15:16
signer.pem	1.82 KB	-rw-r--r--	2019-09-10 15:16
signer2.pem	1.82 KB	-rw-r--r--	2019-09-10 15:16

Rename

/*
 * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

/* Simple S/MIME verification example */
#include <openssl/pem.h>
#include <openssl/cms.h>
#include <openssl/err.h>

int main(int argc, char **argv)
{
    BIO *in = NULL, *out = NULL, *tbio = NULL, *cont = NULL;
    X509_STORE *st = NULL;
    X509 *cacert = NULL;
    CMS_ContentInfo *cms = NULL;

int ret = 1;

OpenSSL_add_all_algorithms();
    ERR_load_crypto_strings();

/* Set up trusted CA certificate store */

st = X509_STORE_new();

/* Read in CA certificate */
    tbio = BIO_new_file("cacert.pem", "r");

if (!tbio)
        goto err;

cacert = PEM_read_bio_X509(tbio, NULL, 0, NULL);

if (!cacert)
        goto err;

if (!X509_STORE_add_cert(st, cacert))
        goto err;

/* Open message being verified */

in = BIO_new_file("smout.txt", "r");

if (!in)
        goto err;

/* parse message */
    cms = SMIME_read_CMS(in, &cont);

if (!cms)
        goto err;

/* File to output verified content to */
    out = BIO_new_file("smver.txt", "w");
    if (!out)
        goto err;

if (!CMS_verify(cms, NULL, st, cont, out, 0)) {
        fprintf(stderr, "Verification Failure\n");
        goto err;
    }

fprintf(stderr, "Verification Successful\n");

ret = 0;

err:

if (ret) {
        fprintf(stderr, "Error Verifying Data\n");
        ERR_print_errors_fp(stderr);
    }

CMS_ContentInfo_free(cms);
    X509_free(cacert);
    BIO_free(in);
    BIO_free(out);
    BIO_free(tbio);
    return ret;
}