DWORD period_size = 0;
int result = CryptDecodeObject(
    PKCS_7_ASN_ENCODING | X509_ASN_ENCODING,
    szCPGUID_PRIVATEKEY_USAGE_PERIOD_Encode,
    intern->cert_info.rgExtension[i].Value.pbData,
    intern->cert_info.rgExtension[i].Value.cbData,
    CRYPT_DECODE_ALLOC_FLAG | CRYPT_DECODE_NOCOPY_FLAG,
    NULL,
    &period_size
);
printf("%d\n", result);
printf("0x%08x\n", GetLastError()); // 0x80090009