Visual Studio配置OpenSSL

Posted 2022-12-13 oilover

OpenSSL 是一个密码学算法库。

下载地址

我的安装在F:\\Program Files\\OpenSSL-Win64\\

VS新建工程，菜单Project->Properties，

Configuration Manager，这样设置：

在C/C++的General->Additional Include Directories设置为：F:\\Program Files\\OpenSSL-Win64\\include

在Linker的All Options->Additional Dependencies设置为libeay32.lib;ssleay32.lib

      Additional Library Directories设置为F:\\Program Files\\OpenSSL-Win64\\lib

实现SHA256算法的代码如下：

// ConsoleApplication1.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <openssl/hmac.h>
#include <cstring>
#include <vector>
#include <algorithm>
#include <iostream>
#include <cstdlib>
#include <cstring>
#include <cstdio>
#include <assert.h>
typedef unsigned long long uint;
#define prt(k) cout<<#k" = "<<k<<endl
typedef long long LL;
using namespace std;

typedef unsigned long long uint;
int HmacEncode(const char * key, unsigned int key_length,
	const char * input, unsigned int input_length,
	unsigned char * &output, unsigned int &output_length) 
	const EVP_MD * engine = NULL;
	engine = EVP_sha256();

	output = (unsigned char*)malloc(EVP_MAX_MD_SIZE);

	HMAC_CTX ctx;
	HMAC_CTX_init(&ctx);
	HMAC_Init_ex(&ctx, key, strlen(key), engine, NULL);
	HMAC_Update(&ctx, (unsigned char*)input, strlen(input));        // input is OK; &input is WRONG !!!

	HMAC_Final(&ctx, output, &output_length);
	HMAC_CTX_cleanup(&ctx);

	return 0;

void HMAC(string message, string key) //len = 32 * 8 = 256

	unsigned char *mac = NULL;; unsigned int out_len;
	HmacEncode(key.c_str(), key.length(), message.c_str(), message.length(), mac, out_len);
	for (int i = 0; i < out_len; i++) 
		printf("%5d", (int)mac[i]);
	
	cout << endl;

int main()

	///std::string str, key;
	char str[555], key[888];
	while (scanf("%s%s", str, key) == 2)
	
		HMAC(string(str), string(key));
	
    return 0;

参考：

http://wenku.baidu.com/link?url=O1O7JgSgfH-ljVLSXe7xig0oT9LObOaNyBdUPW4DhD9yNgTEINjnPk9IDK3NiuyW6jg1e9QKHjKPIgqLcrW4uSevgzYiua39QmD6ykXefve

http://blog.csdn.net/yasi_xi/article/details/9066003