SSL證書（cer key ca文件）轉換成pfx格式--VC實現

openssl使用版本：
http://slproweb.com/products/Win32OpenSSL.html
Win32OpenSSL-1_1_0L.exe

參考文檔：

https://www.openssl.org/docs/man1.1.1/man3/
https://www.cnblogs.com/findumars/p/5436169.html

 

安裝openssl到D盤(D:\OpenSSL-Win32，其實我們需要的就是解壓出裏面的lib、dll以及頭文件)

編譯工具 VS2010

編譯方式：

1、在靜態庫中使用MFC 

2、運行庫使用多線程(/MT) 

3、附加包含目錄：D:\OpenSSL-Win32\include;

4、附加庫目錄：D:\OpenSSL-Win32\lib;

運行庫的選擇要根據下載的openssl版本的編譯工具的版本來定 否則dll、lib由MTD 或 MD等其他方式編譯的就會用不了，

附加依賴項：User32.lib;Advapi32.lib;Gdi32.lib;Ws2_32.lib;Crypt32.lib;

主要代碼：

#include "stdafx.h"
#include "sslconvert.h"
#include "sslconvertDlg.h"
#include <openssl/pkcs12.h>
#include <openssl/pem.h>
#include <openssl/x509v3.h>
#include <openssl/x509.h>
#include <openssl/safestack.h>
#include <openssl/asn1t.h>
#include <stdio.h>
//#include <wchar.h>
#include <afxtempl.h>
#include <shlwapi.h>
#pragma comment(lib, "shlwapi.lib")
extern "C"
{
#include <openssl/applink.c>
}
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
#pragma comment(lib, "libssl.lib")
#pragma comment(lib, "libcrypto.lib")


void CsslconvertDlg::OnBnClickedButton1()
{
	// TODO: 在此添加控件通知處理程序代碼
	errno_t err = 0;
	FILE *fp = NULL;
	X509 *cert = NULL;
	X509 *cacert = NULL;
	EVP_PKEY *pkey = NULL;
	STACK_OF(X509) *pca = NULL;
	PKCS12 *p12 = NULL;
	CString str=_T("");
	const char *szpwd = (LPCTSTR)m_Pwd;//生成的pfx證書密碼
	const char *szkeypwd = (LPCTSTR)m_keyPwd;//key文件密碼
	const char *szcer = (LPCTSTR)m_Pathcer;//cer文件
	const char *szkey = (LPCTSTR)m_Pathkey;//key文件
	const char *szca = (LPCTSTR)m_Pathca;//ca文件
	//
	UpdateData();
	//fopen_s
	err = fopen_s(&fp,szkey,_T("rb"));
	if(err!=0)
	{
		AfxMessageBox(_T("fopen_s key fail"));
		goto FREE_TAG;
	}
	pkey = PEM_read_PrivateKey(fp,NULL,NULL, (void*)szkeypwd);
	if(pkey==NULL)
	{
		AfxMessageBox(_T("PEM_read_PrivateKey"));
		goto FREE_TAG;
	}
	fclose(fp);
	//int X509_check_ca(X509 *cert);
	err = fopen_s(&fp,szcer,_T("rb"));
	if(err!=0)
	{
		AfxMessageBox(_T("fopen_s cer fail"));
		goto FREE_TAG;
	}
	cert = PEM_read_X509_AUX(fp, NULL, NULL, NULL);
	if(cert==NULL)
	{
		AfxMessageBox(_T("PEM_read_X509_AUX"));
		goto FREE_TAG;
	}
	fclose(fp);
	//
	X509_NAME *subj = X509_get_subject_name(cert);
	//char *subject_name   = X509_NAME_oneline(subj, NULL, 0);
	/*for (int i = 0; i < X509_NAME_entry_count(subj); i++) {
		X509_NAME_ENTRY *e = X509_NAME_get_entry(subj, i);
		ASN1_STRING *d = X509_NAME_ENTRY_get_data(e);
		unsigned char *szd = ASN1_STRING_data(d);
		CString str;
		str.Format(_T("%s"),subject_name);
		AfxMessageBox(str);
	}*/
	X509_NAME_ENTRY *e = X509_NAME_get_entry(subj, 0);//只取第一項
	ASN1_STRING *d = X509_NAME_ENTRY_get_data(e);
	unsigned char *szd = ASN1_STRING_data(d);
	m_Certname.Format(_T("%s"),szd);
	//
	fp = NULL;
	err = fopen_s(&fp,szca,_T("rb"));
	if(err!=0)
	{
		//str.Format("err:%d",err);
		//AfxMessageBox(str);
		if(err==ENOENT||err== EINVAL)//ca文件不存在
		{
			int ret =  AfxMessageBox(_T("ca 文件不存在,是否繼續？"),MB_YESNO | MB_ICONQUESTION);
			if(ret==IDNO)
			{
				goto FREE_TAG;
			}
		}
		else
		{
			AfxMessageBox(_T("fopen_s ca fail"));
			goto FREE_TAG;
		}
	}
	if(fp!=NULL)
	{
		cacert = PEM_read_X509_AUX(fp, NULL, NULL, NULL);
		if(cacert==NULL)
		{
			AfxMessageBox(_T("PEM_read_X509_AUX ca.pem"));
			goto FREE_TAG;
		}
		fclose(fp);
		//
		if(cacert!=NULL)
		{
			pca = sk_X509_new_null();
			if (pca == NULL)
			{
				AfxMessageBox("creating STACK_OF(X509) structure fail");
				goto FREE_TAG;
			}
			sk_X509_push(pca, cacert);
		}
	}
	//
	p12 = PKCS12_create("",(char*)szd,pkey,cert, pca,0, 0, 0, 0,0);
	if(p12==NULL)
	{
		AfxMessageBox(_T("PKCS12_create fail"));
		goto FREE_TAG;
	}
	//
	char szfile[256]={0};
	sprintf(szfile,"%s/%s.pfx",GetCurPath(),szd);
	AfxMessageBox(szfile);
	err = fopen_s(&fp,szfile, _T("w+"));
    if (err !=0) 
	{
		AfxMessageBox(_T("fopen  pfx fail"));
	}
	else
	{
		int ret = i2d_PKCS12_fp(fp, p12);
		if(ret!=1)
		{
			AfxMessageBox(_T("i2d_PKCS12_fp fail"));
			DeleteFile(szfile);
		}
	
		fclose(fp);
	}

FREE_TAG:
	EVP_PKEY_free(pkey);
	X509_free(cert);
	X509_free(cacert);
	sk_X509_free(pca);
	PKCS12_free(p12);
	//
	UpdateData(FALSE);
}