Function NCryptDecrypt 

pub unsafe extern "C" fn NCryptDecrypt(
    hKey: NCRYPT_KEY_HANDLE,
    pbInput: PBYTE,
    cbInput: DWORD,
    pPaddingInfo: *mut c_void,
    pbOutput: PBYTE,
    cbOutput: DWORD,
    pcbResult: *mut DWORD,
    dwFlags: DWORD,
) -> SECURITY_STATUS