NCryptUnprotectSecret

// ncrypt.dll
#include <windows.h>

HRESULT NCryptUnprotectSecret(
    NCRYPT_DESCRIPTOR_HANDLE* phDescriptor,   // optional
    NCRYPT_FLAGS dwFlags,
    const BYTE* pbProtectedBlob,
    DWORD cbProtectedBlob,
    const NCRYPT_ALLOC_PARA* pMemPara,   // optional
    HWND hWnd,   // optional
    BYTE** ppbData,
    DWORD* pcbData
);

<DllImport("ncrypt.dll", ExactSpelling:=True)>
Public Shared Function NCryptUnprotectSecret(
    phDescriptor As IntPtr,   ' NCRYPT_DESCRIPTOR_HANDLE* optional, out
    dwFlags As UInteger,   ' NCRYPT_FLAGS
    pbProtectedBlob As IntPtr,   ' BYTE*
    cbProtectedBlob As UInteger,   ' DWORD
    pMemPara As IntPtr,   ' NCRYPT_ALLOC_PARA* optional
    hWnd As IntPtr,   ' HWND optional
    ppbData As IntPtr,   ' BYTE** out
    <Out> ByRef pcbData As UInteger   ' DWORD* out
) As Integer
End Function

' phDescriptor : NCRYPT_DESCRIPTOR_HANDLE* optional, out
' dwFlags : NCRYPT_FLAGS
' pbProtectedBlob : BYTE*
' cbProtectedBlob : DWORD
' pMemPara : NCRYPT_ALLOC_PARA* optional
' hWnd : HWND optional
' ppbData : BYTE** out
' pcbData : DWORD* out
Declare PtrSafe Function NCryptUnprotectSecret Lib "ncrypt" ( _
    ByVal phDescriptor As LongPtr, _
    ByVal dwFlags As Long, _
    ByVal pbProtectedBlob As LongPtr, _
    ByVal cbProtectedBlob As Long, _
    ByVal pMemPara As LongPtr, _
    ByVal hWnd As LongPtr, _
    ByVal ppbData As LongPtr, _
    ByRef pcbData As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

NCryptUnprotectSecret = ctypes.windll.ncrypt.NCryptUnprotectSecret
NCryptUnprotectSecret.restype = ctypes.c_int
NCryptUnprotectSecret.argtypes = [
    ctypes.c_void_p,  # phDescriptor : NCRYPT_DESCRIPTOR_HANDLE* optional, out
    wintypes.DWORD,  # dwFlags : NCRYPT_FLAGS
    ctypes.POINTER(ctypes.c_ubyte),  # pbProtectedBlob : BYTE*
    wintypes.DWORD,  # cbProtectedBlob : DWORD
    ctypes.c_void_p,  # pMemPara : NCRYPT_ALLOC_PARA* optional
    wintypes.HANDLE,  # hWnd : HWND optional
    ctypes.c_void_p,  # ppbData : BYTE** out
    ctypes.POINTER(wintypes.DWORD),  # pcbData : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ncrypt.dll')
NCryptUnprotectSecret = Fiddle::Function.new(
  lib['NCryptUnprotectSecret'],
  [
    Fiddle::TYPE_VOIDP,  # phDescriptor : NCRYPT_DESCRIPTOR_HANDLE* optional, out
    -Fiddle::TYPE_INT,  # dwFlags : NCRYPT_FLAGS
    Fiddle::TYPE_VOIDP,  # pbProtectedBlob : BYTE*
    -Fiddle::TYPE_INT,  # cbProtectedBlob : DWORD
    Fiddle::TYPE_VOIDP,  # pMemPara : NCRYPT_ALLOC_PARA* optional
    Fiddle::TYPE_VOIDP,  # hWnd : HWND optional
    Fiddle::TYPE_VOIDP,  # ppbData : BYTE** out
    Fiddle::TYPE_VOIDP,  # pcbData : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "ncrypt")]
extern "system" {
    fn NCryptUnprotectSecret(
        phDescriptor: *mut *mut core::ffi::c_void,  // NCRYPT_DESCRIPTOR_HANDLE* optional, out
        dwFlags: u32,  // NCRYPT_FLAGS
        pbProtectedBlob: *const u8,  // BYTE*
        cbProtectedBlob: u32,  // DWORD
        pMemPara: *const NCRYPT_ALLOC_PARA,  // NCRYPT_ALLOC_PARA* optional
        hWnd: *mut core::ffi::c_void,  // HWND optional
        ppbData: *mut *mut u8,  // BYTE** out
        pcbData: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ncrypt.dll")]
public static extern int NCryptUnprotectSecret(IntPtr phDescriptor, uint dwFlags, IntPtr pbProtectedBlob, uint cbProtectedBlob, IntPtr pMemPara, IntPtr hWnd, IntPtr ppbData, out uint pcbData);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ncrypt_NCryptUnprotectSecret' -Namespace Win32 -PassThru
# $api::NCryptUnprotectSecret(phDescriptor, dwFlags, pbProtectedBlob, cbProtectedBlob, pMemPara, hWnd, ppbData, pcbData)

#uselib "ncrypt.dll"
#func global NCryptUnprotectSecret "NCryptUnprotectSecret" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; NCryptUnprotectSecret phDescriptor, dwFlags, varptr(pbProtectedBlob), cbProtectedBlob, varptr(pMemPara), hWnd, varptr(ppbData), varptr(pcbData)   ; 戻り値は stat
; phDescriptor : NCRYPT_DESCRIPTOR_HANDLE* optional, out -> "sptr"
; dwFlags : NCRYPT_FLAGS -> "sptr"
; pbProtectedBlob : BYTE* -> "sptr"
; cbProtectedBlob : DWORD -> "sptr"
; pMemPara : NCRYPT_ALLOC_PARA* optional -> "sptr"
; hWnd : HWND optional -> "sptr"
; ppbData : BYTE** out -> "sptr"
; pcbData : DWORD* out -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

#uselib "ncrypt.dll"
#cfunc global NCryptUnprotectSecret "NCryptUnprotectSecret" sptr, int, var, int, var, sptr, var, var
; res = NCryptUnprotectSecret(phDescriptor, dwFlags, pbProtectedBlob, cbProtectedBlob, pMemPara, hWnd, ppbData, pcbData)
; phDescriptor : NCRYPT_DESCRIPTOR_HANDLE* optional, out -> "sptr"
; dwFlags : NCRYPT_FLAGS -> "int"
; pbProtectedBlob : BYTE* -> "var"
; cbProtectedBlob : DWORD -> "int"
; pMemPara : NCRYPT_ALLOC_PARA* optional -> "var"
; hWnd : HWND optional -> "sptr"
; ppbData : BYTE** out -> "var"
; pcbData : DWORD* out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; HRESULT NCryptUnprotectSecret(NCRYPT_DESCRIPTOR_HANDLE* phDescriptor, NCRYPT_FLAGS dwFlags, BYTE* pbProtectedBlob, DWORD cbProtectedBlob, NCRYPT_ALLOC_PARA* pMemPara, HWND hWnd, BYTE** ppbData, DWORD* pcbData)
#uselib "ncrypt.dll"
#cfunc global NCryptUnprotectSecret "NCryptUnprotectSecret" intptr, int, var, int, var, intptr, var, var
; res = NCryptUnprotectSecret(phDescriptor, dwFlags, pbProtectedBlob, cbProtectedBlob, pMemPara, hWnd, ppbData, pcbData)
; phDescriptor : NCRYPT_DESCRIPTOR_HANDLE* optional, out -> "intptr"
; dwFlags : NCRYPT_FLAGS -> "int"
; pbProtectedBlob : BYTE* -> "var"
; cbProtectedBlob : DWORD -> "int"
; pMemPara : NCRYPT_ALLOC_PARA* optional -> "var"
; hWnd : HWND optional -> "intptr"
; ppbData : BYTE** out -> "var"
; pcbData : DWORD* out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	ncrypt = windows.NewLazySystemDLL("ncrypt.dll")
	procNCryptUnprotectSecret = ncrypt.NewProc("NCryptUnprotectSecret")
)

// phDescriptor (NCRYPT_DESCRIPTOR_HANDLE* optional, out), dwFlags (NCRYPT_FLAGS), pbProtectedBlob (BYTE*), cbProtectedBlob (DWORD), pMemPara (NCRYPT_ALLOC_PARA* optional), hWnd (HWND optional), ppbData (BYTE** out), pcbData (DWORD* out)
r1, _, err := procNCryptUnprotectSecret.Call(
	uintptr(phDescriptor),
	uintptr(dwFlags),
	uintptr(pbProtectedBlob),
	uintptr(cbProtectedBlob),
	uintptr(pMemPara),
	uintptr(hWnd),
	uintptr(ppbData),
	uintptr(pcbData),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function NCryptUnprotectSecret(
  phDescriptor: Pointer;   // NCRYPT_DESCRIPTOR_HANDLE* optional, out
  dwFlags: DWORD;   // NCRYPT_FLAGS
  pbProtectedBlob: Pointer;   // BYTE*
  cbProtectedBlob: DWORD;   // DWORD
  pMemPara: Pointer;   // NCRYPT_ALLOC_PARA* optional
  hWnd: THandle;   // HWND optional
  ppbData: Pointer;   // BYTE** out
  pcbData: Pointer   // DWORD* out
): Integer; stdcall;
  external 'ncrypt.dll' name 'NCryptUnprotectSecret';

result := DllCall("ncrypt\NCryptUnprotectSecret"
    , "Ptr", phDescriptor   ; NCRYPT_DESCRIPTOR_HANDLE* optional, out
    , "UInt", dwFlags   ; NCRYPT_FLAGS
    , "Ptr", pbProtectedBlob   ; BYTE*
    , "UInt", cbProtectedBlob   ; DWORD
    , "Ptr", pMemPara   ; NCRYPT_ALLOC_PARA* optional
    , "Ptr", hWnd   ; HWND optional
    , "Ptr", ppbData   ; BYTE** out
    , "Ptr", pcbData   ; DWORD* out
    , "Int")   ; return: HRESULT

●NCryptUnprotectSecret(phDescriptor, dwFlags, pbProtectedBlob, cbProtectedBlob, pMemPara, hWnd, ppbData, pcbData) = DLL("ncrypt.dll", "int NCryptUnprotectSecret(void*, dword, void*, dword, void*, void*, void*, void*)")
# 呼び出し: NCryptUnprotectSecret(phDescriptor, dwFlags, pbProtectedBlob, cbProtectedBlob, pMemPara, hWnd, ppbData, pcbData)
# phDescriptor : NCRYPT_DESCRIPTOR_HANDLE* optional, out -> "void*"
# dwFlags : NCRYPT_FLAGS -> "dword"
# pbProtectedBlob : BYTE* -> "void*"
# cbProtectedBlob : DWORD -> "dword"
# pMemPara : NCRYPT_ALLOC_PARA* optional -> "void*"
# hWnd : HWND optional -> "void*"
# ppbData : BYTE** out -> "void*"
# pcbData : DWORD* out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。