网站建设网站设计多少钱,H5 网站,学校网站建设汇报ppt,快递查询网站建设文章目录 openssl3.2 - 官方demo学习 - smime - smenc.c概述笔记END openssl3.2 - 官方demo学习 - smime - smenc.c
概述
读取X509证书, 用PKCS7加密明文(证书 明文 3DES_CBC), 保存为MIME格式的密文
openssl API的命名含义
BIO_new_file “new” a “file”, return a “… 文章目录 openssl3.2 - 官方demo学习 - smime - smenc.c概述笔记END openssl3.2 - 官方demo学习 - smime - smenc.c
概述
读取X509证书, 用PKCS7加密明文(证书 明文 3DES_CBC), 保存为MIME格式的密文
openssl API的命名含义
BIO_new_file “new” a “file”, return a “BIO” object
PEM_read_bio_X509() Read a certificate in PEM format from a BIO data format is “PEM”, “read” from “bio”, return a object type is “X509”
笔记
/*!
\file smenc.c
\note
openssl3.2 - 官方demo学习 - smime - smenc.c
读取X509证书, 用PKCS7加密明文(证书 明文 3DES_CBC), 保存为MIME格式的密文openssl API的命名含义BIO_new_file
new a file, return a BIO objectPEM_read_bio_X509() Read a certificate in PEM format from a BIO
data format is PEM, read from bio, return a object type is X509
*//** 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*//* Simple S/MIME encrypt example */
#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_t NULL;X509* _x509_r NULL;STACK_OF(X509)* _sk_x509 NULL;PKCS7* _pkcs7 NULL;int ret EXIT_FAILURE;/** On OpenSSL 0.9.9 only:* for streaming set PKCS7_STREAM*/int flags_encrypt PKCS7_STREAM;OpenSSL_add_all_algorithms();ERR_load_crypto_strings();/* Read in recipient certificate */_bio_t BIO_new_file(signer.pem, r);if (!_bio_t)goto err;_x509_r PEM_read_bio_X509(_bio_t, NULL, 0, NULL);if (!_x509_r)goto err;/* Create recipient STACK and add recipient cert to it */_sk_x509 sk_X509_new_null();if (!_sk_x509 || !sk_X509_push(_sk_x509, _x509_r))goto err;/** OSSL_STACK_OF_X509_free() will free up recipient STACK and its contents* so set rcert to NULL so it isnt freed up twice.*/_x509_r NULL;/* Open content being encrypted */_bio_in BIO_new_file(encr.txt, r);if (!_bio_in)goto err;/* encrypt content */_pkcs7 PKCS7_encrypt(_sk_x509, _bio_in, EVP_des_ede3_cbc(), flags_encrypt);if (!_pkcs7)goto err;_bio_out BIO_new_file(smencr.txt, w);if (!_bio_out)goto err;/* Write out S/MIME message */if (!SMIME_write_PKCS7(_bio_out, _pkcs7, _bio_in, flags_encrypt))goto err;ret EXIT_SUCCESS;err:if (ret ! EXIT_SUCCESS) {fprintf(stderr, Error Encrypting Data\n);ERR_print_errors_fp(stderr);}PKCS7_free(_pkcs7);X509_free(_x509_r);OSSL_STACK_OF_X509_free(_sk_x509);BIO_free(_bio_in);BIO_free(_bio_out);BIO_free(_bio_t);return ret;}
END
