qianm

//创建Hash对象if(!CryptCreateHash(hSignProv, CALG_SHA1, 0, 0, &hHash)) {//错误处理}// 计算数据的Hash值if(!CryptHashData(hHash, pbSourceData, dwSourceLen, 0)) {//错误处理}//计算签名后数据的长度if(!CryptSignHash(hHash,AT_SIGNATURE,NULL,0,NULL, &dwSignatureLen)) {//错误处理}//为签名后数据申请空间. . .//获取签名后数据if(!CryptSignHash(hHash,AT_SIGNATURE,NULL,0,pbSignature,&dwSignatureLen)) {//错误处理}if (!CryptDestroyHash(hHash)) {//错误处理}