【C++】获取软件的数字签名

#include <wincrypt.h>#pragma comment(lib, "crypt32.lib") //作用：获取软件的数字签名//参数：//v_pwszFilePath --- 程序的全路径//v_pwszSign --- 用于返回数字签名的缓冲区,如果为NULL，// 那么将会需要的缓冲区大小// v_iBufSize --- v_pwszSign缓冲区的大小//返回值：//-1--- 失败//0 --- 成功//其它值 --- 需要的缓冲区大小////*****************************************************//LONG GetSoftSign(WCHAR* v_pszFilePath,char * v_pszSign,int v_iBufSize){//首先判断参数是否正确if(v_pszFilePath == NULL) return -1;HCERTSTORE hStore = NULL;HCRYPTMSG hMsg = NULL;PCCERT_CONTEXT pCertContext = NULL;BOOL bResult;DWORD dwEncoding, dwContentType, dwFormatType;PCMSG_SIGNER_INFO pSignerInfo = NULL;PCMSG_SIGNER_INFO pCounterSignerInfo = NULL;DWORD dwSignerInfo;CERT_INFO CertInfo;SYSTEMTIME st;LONG lRet;DWORD dwDataSize = 0;char chTemp[MAX_PATH] = {0};do {//从签名文件中获取存储句柄bResult = CryptQueryObject(CERT_QUERY_OBJECT_FILE,v_pszFilePath,CERT_QUERY_CONTENT_FLAG_PKCS7_SIGNED_EMBED,CERT_QUERY_FORMAT_FLAG_BINARY,0,&dwEncoding,&dwContentType,&dwFormatType,&hStore,&hMsg,NULL);if(!bResult){lRet = -1;break;}//获取签名信息所需的缓冲区大小bResult = CryptMsgGetParam(hMsg,CMSG_SIGNER_INFO_PARAM,0,NULL,&dwSignerInfo);if(!bResult){lRet = -1;break;}//分配缓冲区pSignerInfo = (PCMSG_SIGNER_INFO)LocalAlloc(LPTR, dwSignerInfo);if(pSignerInfo == NULL){lRet = -1;break;}//获取签名信息bResult = CryptMsgGetParam(hMsg,CMSG_SIGNER_INFO_PARAM,0,pSignerInfo,&dwSignerInfo);if(!bResult){lRet = -1;break;}CertInfo.Issuer = pSignerInfo->Issuer;CertInfo.SerialNumber = pSignerInfo->SerialNumber;pCertContext = CertFindCertificateInStore(hStore,ENCODING,0,CERT_FIND_SUBJECT_CERT,(PVOID)&CertInfo,NULL);if(pCertContext == NULL){lRet = -1;break;}//获取数字键名//没有给定缓冲区，那么说明只要获取下需要的长度if(v_pszSign == NULL){dwDataSize = CertGetNameString(pCertContext,CERT_NAME_SIMPLE_DISPLAY_TYPE,0,NULL,NULL,0);if(dwDataSize != 0){lRet = dwDataSize;}else{lRet = -1;}break;}if (!(CertGetNameString(pCertContext,CERT_NAME_SIMPLE_DISPLAY_TYPE,0,NULL,v_pszSign,v_iBufSize))){lRet = -1;break;}lRet = 0;} while(FALSE);if(pSignerInfo != NULL){LocalFree((HLOCAL)pSignerInfo);}return lRet;}