+/*
+ * 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
+ */
+
/* S/MIME signing example: 2 signers */
#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;
- X509 *scert = NULL, *scert2 = NULL;
- EVP_PKEY *skey = NULL, *skey2 = NULL;
- CMS_ContentInfo *cms = NULL;
- int ret = 1;
-
- OpenSSL_add_all_algorithms();
- ERR_load_crypto_strings();
-
- tbio = BIO_new_file("signer.pem", "r");
-
- if (!tbio)
- goto err;
-
- scert = PEM_read_bio_X509(tbio, NULL, 0, NULL);
-
- BIO_reset(tbio);
+{
+ BIO *in = NULL, *out = NULL, *tbio = NULL;
+ X509 *scert = NULL, *scert2 = NULL;
+ EVP_PKEY *skey = NULL, *skey2 = NULL;
+ CMS_ContentInfo *cms = NULL;
+ int ret = 1;
- skey = PEM_read_bio_PrivateKey(tbio, NULL, 0, NULL);
+ OpenSSL_add_all_algorithms();
+ ERR_load_crypto_strings();
- BIO_free(tbio);
+ tbio = BIO_new_file("signer.pem", "r");
- tbio = BIO_new_file("signer2.pem", "r");
+ if (!tbio)
+ goto err;
- if (!tbio)
- goto err;
+ scert = PEM_read_bio_X509(tbio, NULL, 0, NULL);
- scert2 = PEM_read_bio_X509(tbio, NULL, 0, NULL);
+ BIO_reset(tbio);
- BIO_reset(tbio);
+ skey = PEM_read_bio_PrivateKey(tbio, NULL, 0, NULL);
- skey2 = PEM_read_bio_PrivateKey(tbio, NULL, 0, NULL);
+ BIO_free(tbio);
- if (!scert2 || !skey2)
- goto err;
+ tbio = BIO_new_file("signer2.pem", "r");
- in = BIO_new_file("sign.txt", "r");
+ if (!tbio)
+ goto err;
- if (!in)
- goto err;
+ scert2 = PEM_read_bio_X509(tbio, NULL, 0, NULL);
- cms = CMS_sign(NULL, NULL, NULL, in, CMS_STREAM|CMS_PARTIAL);
+ BIO_reset(tbio);
- if (!cms)
- goto err;
+ skey2 = PEM_read_bio_PrivateKey(tbio, NULL, 0, NULL);
- /* Add each signer in turn */
+ if (!scert2 || !skey2)
+ goto err;
- if (!CMS_add1_signer(cms, scert, skey, NULL, 0))
- goto err;
+ in = BIO_new_file("sign.txt", "r");
- if (!CMS_add1_signer(cms, scert2, skey2, NULL, 0))
- goto err;
+ if (!in)
+ goto err;
- out = BIO_new_file("smout.txt", "w");
- if (!out)
- goto err;
+ cms = CMS_sign(NULL, NULL, NULL, in, CMS_STREAM | CMS_PARTIAL);
- /* NB: content included and finalized by SMIME_write_CMS */
+ if (!cms)
+ goto err;
- if (!SMIME_write_CMS(out, cms, in, CMS_STREAM))
- goto err;
+ /* Add each signer in turn */
- ret = 0;
+ if (!CMS_add1_signer(cms, scert, skey, NULL, 0))
+ goto err;
- err:
+ if (!CMS_add1_signer(cms, scert2, skey2, NULL, 0))
+ goto err;
- if (ret)
- {
- fprintf(stderr, "Error Signing Data\n");
- ERR_print_errors_fp(stderr);
- }
+ out = BIO_new_file("smout.txt", "w");
+ if (!out)
+ goto err;
- if (cms)
- CMS_ContentInfo_free(cms);
+ /* NB: content included and finalized by SMIME_write_CMS */
- if (scert)
- X509_free(scert);
- if (skey)
- EVP_PKEY_free(skey);
+ if (!SMIME_write_CMS(out, cms, in, CMS_STREAM))
+ goto err;
- if (scert2)
- X509_free(scert2);
- if (skey)
- EVP_PKEY_free(skey2);
+ ret = 0;
- if (in)
- BIO_free(in);
- if (out)
- BIO_free(out);
- if (tbio)
- BIO_free(tbio);
+ err:
- return ret;
+ if (ret) {
+ fprintf(stderr, "Error Signing Data\n");
+ ERR_print_errors_fp(stderr);
+ }
- }
+ CMS_ContentInfo_free(cms);
+ X509_free(scert);
+ EVP_PKEY_free(skey);
+ X509_free(scert2);
+ EVP_PKEY_free(skey2);
+ BIO_free(in);
+ BIO_free(out);
+ BIO_free(tbio);
+ return ret;
+}