ClusterDecrypt

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

DWORD ClusterDecrypt(
    HCLUSCRYPTPROVIDER hClusCryptProvider,
    BYTE* pCryptInput,
    DWORD cbCryptInput,
    BYTE** ppCryptOutput,
    DWORD* pcbCryptOutput
);

<DllImport("RESUTILS.dll", ExactSpelling:=True)>
Public Shared Function ClusterDecrypt(
    hClusCryptProvider As IntPtr,   ' HCLUSCRYPTPROVIDER
    pCryptInput As IntPtr,   ' BYTE*
    cbCryptInput As UInteger,   ' DWORD
    ppCryptOutput As IntPtr,   ' BYTE** out
    <Out> ByRef pcbCryptOutput As UInteger   ' DWORD* out
) As UInteger
End Function

' hClusCryptProvider : HCLUSCRYPTPROVIDER
' pCryptInput : BYTE*
' cbCryptInput : DWORD
' ppCryptOutput : BYTE** out
' pcbCryptOutput : DWORD* out
Declare PtrSafe Function ClusterDecrypt Lib "resutils" ( _
    ByVal hClusCryptProvider As LongPtr, _
    ByVal pCryptInput As LongPtr, _
    ByVal cbCryptInput As Long, _
    ByVal ppCryptOutput As LongPtr, _
    ByRef pcbCryptOutput 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

ClusterDecrypt = ctypes.windll.resutils.ClusterDecrypt
ClusterDecrypt.restype = wintypes.DWORD
ClusterDecrypt.argtypes = [
    ctypes.c_ssize_t,  # hClusCryptProvider : HCLUSCRYPTPROVIDER
    ctypes.POINTER(ctypes.c_ubyte),  # pCryptInput : BYTE*
    wintypes.DWORD,  # cbCryptInput : DWORD
    ctypes.c_void_p,  # ppCryptOutput : BYTE** out
    ctypes.POINTER(wintypes.DWORD),  # pcbCryptOutput : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('RESUTILS.dll')
ClusterDecrypt = Fiddle::Function.new(
  lib['ClusterDecrypt'],
  [
    Fiddle::TYPE_INTPTR_T,  # hClusCryptProvider : HCLUSCRYPTPROVIDER
    Fiddle::TYPE_VOIDP,  # pCryptInput : BYTE*
    -Fiddle::TYPE_INT,  # cbCryptInput : DWORD
    Fiddle::TYPE_VOIDP,  # ppCryptOutput : BYTE** out
    Fiddle::TYPE_VOIDP,  # pcbCryptOutput : DWORD* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "resutils")]
extern "system" {
    fn ClusterDecrypt(
        hClusCryptProvider: isize,  // HCLUSCRYPTPROVIDER
        pCryptInput: *mut u8,  // BYTE*
        cbCryptInput: u32,  // DWORD
        ppCryptOutput: *mut *mut u8,  // BYTE** out
        pcbCryptOutput: *mut u32  // DWORD* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("RESUTILS.dll")]
public static extern uint ClusterDecrypt(IntPtr hClusCryptProvider, IntPtr pCryptInput, uint cbCryptInput, IntPtr ppCryptOutput, out uint pcbCryptOutput);
"@
$api = Add-Type -MemberDefinition $sig -Name 'RESUTILS_ClusterDecrypt' -Namespace Win32 -PassThru
# $api::ClusterDecrypt(hClusCryptProvider, pCryptInput, cbCryptInput, ppCryptOutput, pcbCryptOutput)

#uselib "RESUTILS.dll"
#func global ClusterDecrypt "ClusterDecrypt" sptr, sptr, sptr, sptr, sptr
; ClusterDecrypt hClusCryptProvider, varptr(pCryptInput), cbCryptInput, varptr(ppCryptOutput), varptr(pcbCryptOutput)   ; 戻り値は stat
; hClusCryptProvider : HCLUSCRYPTPROVIDER -> "sptr"
; pCryptInput : BYTE* -> "sptr"
; cbCryptInput : DWORD -> "sptr"
; ppCryptOutput : BYTE** out -> "sptr"
; pcbCryptOutput : 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 "RESUTILS.dll"
#cfunc global ClusterDecrypt "ClusterDecrypt" sptr, var, int, var, var
; res = ClusterDecrypt(hClusCryptProvider, pCryptInput, cbCryptInput, ppCryptOutput, pcbCryptOutput)
; hClusCryptProvider : HCLUSCRYPTPROVIDER -> "sptr"
; pCryptInput : BYTE* -> "var"
; cbCryptInput : DWORD -> "int"
; ppCryptOutput : BYTE** out -> "var"
; pcbCryptOutput : 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。

; DWORD ClusterDecrypt(HCLUSCRYPTPROVIDER hClusCryptProvider, BYTE* pCryptInput, DWORD cbCryptInput, BYTE** ppCryptOutput, DWORD* pcbCryptOutput)
#uselib "RESUTILS.dll"
#cfunc global ClusterDecrypt "ClusterDecrypt" intptr, var, int, var, var
; res = ClusterDecrypt(hClusCryptProvider, pCryptInput, cbCryptInput, ppCryptOutput, pcbCryptOutput)
; hClusCryptProvider : HCLUSCRYPTPROVIDER -> "intptr"
; pCryptInput : BYTE* -> "var"
; cbCryptInput : DWORD -> "int"
; ppCryptOutput : BYTE** out -> "var"
; pcbCryptOutput : 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 (
	resutils = windows.NewLazySystemDLL("RESUTILS.dll")
	procClusterDecrypt = resutils.NewProc("ClusterDecrypt")
)

// hClusCryptProvider (HCLUSCRYPTPROVIDER), pCryptInput (BYTE*), cbCryptInput (DWORD), ppCryptOutput (BYTE** out), pcbCryptOutput (DWORD* out)
r1, _, err := procClusterDecrypt.Call(
	uintptr(hClusCryptProvider),
	uintptr(pCryptInput),
	uintptr(cbCryptInput),
	uintptr(ppCryptOutput),
	uintptr(pcbCryptOutput),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function ClusterDecrypt(
  hClusCryptProvider: NativeInt;   // HCLUSCRYPTPROVIDER
  pCryptInput: Pointer;   // BYTE*
  cbCryptInput: DWORD;   // DWORD
  ppCryptOutput: Pointer;   // BYTE** out
  pcbCryptOutput: Pointer   // DWORD* out
): DWORD; stdcall;
  external 'RESUTILS.dll' name 'ClusterDecrypt';

result := DllCall("RESUTILS\ClusterDecrypt"
    , "Ptr", hClusCryptProvider   ; HCLUSCRYPTPROVIDER
    , "Ptr", pCryptInput   ; BYTE*
    , "UInt", cbCryptInput   ; DWORD
    , "Ptr", ppCryptOutput   ; BYTE** out
    , "Ptr", pcbCryptOutput   ; DWORD* out
    , "UInt")   ; return: DWORD

●ClusterDecrypt(hClusCryptProvider, pCryptInput, cbCryptInput, ppCryptOutput, pcbCryptOutput) = DLL("RESUTILS.dll", "dword ClusterDecrypt(int, void*, dword, void*, void*)")
# 呼び出し: ClusterDecrypt(hClusCryptProvider, pCryptInput, cbCryptInput, ppCryptOutput, pcbCryptOutput)
# hClusCryptProvider : HCLUSCRYPTPROVIDER -> "int"
# pCryptInput : BYTE* -> "void*"
# cbCryptInput : DWORD -> "dword"
# ppCryptOutput : BYTE** out -> "void*"
# pcbCryptOutput : 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)。