Function CryptExportPKCS8
pub unsafe fn CryptExportPKCS8<P2>(
hcryptprov: usize,
dwkeyspec: u32,
pszprivatekeyobjid: P2,
dwflags: u32,
pvauxinfo: Option<*const c_void>,
pbprivatekeyblob: Option<*mut u8>,
pcbprivatekeyblob: *mut u32,
) -> Result<()>where
P2: Param<PCSTR>,