免费网站建站教程,中国企业500强怎么评的,小学校园网站建设方案,wordpress linux伪静态文章目录 openssl3.2 - 官方demo学习 - smime - smsign2.c概述笔记END openssl3.2 - 官方demo学习 - smime - smsign2.c
概述
PKCS7联合签名 从N张证书中, 分别得到N对(x509和私钥) 对明文进行签名(只是指定了bio_in和flag), 得到pkcs7* 对此pkcs7进行附加签名者的操作(指定证… 文章目录 openssl3.2 - 官方demo学习 - smime - smsign2.c概述笔记END openssl3.2 - 官方demo学习 - smime - smsign2.c
概述
PKCS7联合签名 从N张证书中, 分别得到N对(x509和私钥) 对明文进行签名(只是指定了bio_in和flag), 得到pkcs7* 对此pkcs7进行附加签名者的操作(指定证书和私钥), 有几个联合签名者, 就进行几次操作 将签名数据pkcs7写为密文
笔记
/*!
\file smsign2.c
\note
openssl3.2 - 官方demo学习 - smime - smsign2.cPKCS7联合签名
从N张证书中, 分别得到N对(x509*和私钥*)
对明文进行签名(只是指定了bio_in和flag), 得到pkcs7*
对此pkcs7进行附加签名者的操作(指定证书*和私钥*), 有几个联合签名者, 就进行几次操作
将签名数据pkcs7写为密文
*//** Copyright 2007-2023 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. OpenSSL 0.9.9 only */
#include openssl/pem.h
#include openssl/pkcs7.h
#include openssl/err.h#include my_openSSL_lib.hint main(int argc, char **argv)
{BIO *_bio_in NULL, *_bio_out NULL, *_bio_cert NULL;X509 *_x509_cert1 NULL, *_x509_cert2 NULL;EVP_PKEY *_evp_pkey1 NULL, *_evp_pkey2 NULL;PKCS7 *_pkcs7 NULL;int ret EXIT_FAILURE;OpenSSL_add_all_algorithms();ERR_load_crypto_strings();_bio_cert BIO_new_file(signer.pem, r);if (!_bio_cert)goto err;_x509_cert1 PEM_read_bio_X509(_bio_cert, NULL, 0, NULL);BIO_reset(_bio_cert);_evp_pkey1 PEM_read_bio_PrivateKey(_bio_cert, NULL, 0, NULL);BIO_free(_bio_cert);_bio_cert BIO_new_file(signer2.pem, r);if (!_bio_cert)goto err;_x509_cert2 PEM_read_bio_X509(_bio_cert, NULL, 0, NULL);BIO_reset(_bio_cert);_evp_pkey2 PEM_read_bio_PrivateKey(_bio_cert, NULL, 0, NULL);if (!_x509_cert2 || !_evp_pkey2)goto err;_bio_in BIO_new_file(sign.txt, r);if (!_bio_in)goto err;_pkcs7 PKCS7_sign(NULL, NULL, NULL, _bio_in, PKCS7_STREAM | PKCS7_PARTIAL);if (!_pkcs7)goto err;/* Add each signer in turn */if (!PKCS7_sign_add_signer(_pkcs7, _x509_cert1, _evp_pkey1, NULL, 0))goto err;if (!PKCS7_sign_add_signer(_pkcs7, _x509_cert2, _evp_pkey2, NULL, 0))goto err;_bio_out BIO_new_file(smout.txt, w);if (!_bio_out)goto err;/* NB: content included and finalized by SMIME_write_PKCS7 */if (!SMIME_write_PKCS7(_bio_out, _pkcs7, _bio_in, PKCS7_STREAM))goto err;ret EXIT_SUCCESS;err:if (ret ! EXIT_SUCCESS) {fprintf(stderr, Error Signing Data\n);ERR_print_errors_fp(stderr);}PKCS7_free(_pkcs7);X509_free(_x509_cert1);EVP_PKEY_free(_evp_pkey1);X509_free(_x509_cert2);EVP_PKEY_free(_evp_pkey2);BIO_free(_bio_in);BIO_free(_bio_out);BIO_free(_bio_cert);return ret;
}
END
