5在线做网站,东莞建设网官网首页,腾讯云自助建站,国外 家具 网站模板下载文章目录 openssl3.2 - 官方demo学习 - cms - cms_sign2.c概述笔记END openssl3.2 - 官方demo学习 - cms - cms_sign2.c 概述 用多个证书进行CMS消息联合签名 笔记 /*! * \file cms_sign2.c * \note openssl3.2 - 官方demo学习 - cms - cms_sign2.c 用多个证书进行CMS消息联… 文章目录 openssl3.2 - 官方demo学习 - cms - cms_sign2.c概述笔记END openssl3.2 - 官方demo学习 - cms - cms_sign2.c 概述 用多个证书进行CMS消息联合签名 笔记 /*! * \file cms_sign2.c * \note openssl3.2 - 官方demo学习 - cms - cms_sign2.c 用多个证书进行CMS消息联合签名 *//** Copyright 2008-2023 The OpenSSL Project Authors. All Rights Reserved.** Licensed under the Apache License 2.0 (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#include my_openSSL_lib.hint 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 EXIT_FAILURE;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);skey PEM_read_bio_PrivateKey(tbio, NULL, 0, NULL);BIO_free(tbio);tbio BIO_new_file(signer2.pem, r);if (!tbio)goto err;scert2 PEM_read_bio_X509(tbio, NULL, 0, NULL);BIO_reset(tbio);skey2 PEM_read_bio_PrivateKey(tbio, NULL, 0, NULL);if (!scert2 || !skey2)goto err;in BIO_new_file(sign.txt, r);if (!in)goto err;cms CMS_sign(NULL, NULL, NULL, in, CMS_STREAM | CMS_PARTIAL);if (!cms)goto err;/* Add each signer in turn */if (!CMS_add1_signer(cms, scert, skey, NULL, 0))goto err;if (!CMS_add1_signer(cms, scert2, skey2, NULL, 0))goto err;out BIO_new_file(smout.txt, w);if (!out)goto err;/* NB: content included and finalized by SMIME_write_CMS */if (!SMIME_write_CMS(out, cms, in, CMS_STREAM))goto err;printf(Signing Successful\n);ret EXIT_SUCCESS;err:if (ret ! EXIT_SUCCESS) {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; } END