// Открываем хранилище сертификатов
if (!(hCertStore = CertOpenStore(
CERT_STORE_PROV_SYSTEM,
0,
NULL,
CERT_SYSTEM_STORE_CURRENT_USER,
CERT_STORE_NAME)))
{
printf("You can not open the vault MY.");
}
else {
printf("open the vault MY.\n");
}

// Получаем указатель на наш сертификат
if (!(pCertContext = CryptUIDlgSelectCertificateFromStore(
hCertStore,
NULL,
NULL,
NULL,
CRYPTUI_SELECT_LOCATION_COLUMN,
0,
NULL)))
{
printf("no change cert. \n");
}
else
{
printf("ok change cert. \n");
}


HCRYPTPROV hCryptProv = NULL;
DWORD dwKeySpecSender;
if (CryptAcquireCertificatePrivateKey(
pCertContext,
0,
NULL,
&hCryptProv,
&dwKeySpecSender,
NULL))
{
printf("dwKeySpecSender - %d.\n", dwKeySpecSender);
printf("The CSP handle has been acquired. \n");
}
else
{
printf("Error during CryptAcquireCertificatePrivateKey.");
}