BCryptDecrypt

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

NTSTATUS BCryptDecrypt(
    BCRYPT_KEY_HANDLE hKey,
    BYTE* pbInput,   // optional
    DWORD cbInput,
    void* pPaddingInfo,   // optional
    BYTE* pbIV,   // optional
    DWORD cbIV,
    BYTE* pbOutput,   // optional
    DWORD cbOutput,
    DWORD* pcbResult,
    BCRYPT_FLAGS dwFlags
);

<DllImport("bcrypt.dll", ExactSpelling:=True)>
Public Shared Function BCryptDecrypt(
    hKey As IntPtr,   ' BCRYPT_KEY_HANDLE in/out
    pbInput As IntPtr,   ' BYTE* optional
    cbInput As UInteger,   ' DWORD
    pPaddingInfo As IntPtr,   ' void* optional
    pbIV As IntPtr,   ' BYTE* optional, in/out
    cbIV As UInteger,   ' DWORD
    pbOutput As IntPtr,   ' BYTE* optional, out
    cbOutput As UInteger,   ' DWORD
    <Out> ByRef pcbResult As UInteger,   ' DWORD* out
    dwFlags As UInteger   ' BCRYPT_FLAGS
) As Integer
End Function

' hKey : BCRYPT_KEY_HANDLE in/out
' pbInput : BYTE* optional
' cbInput : DWORD
' pPaddingInfo : void* optional
' pbIV : BYTE* optional, in/out
' cbIV : DWORD
' pbOutput : BYTE* optional, out
' cbOutput : DWORD
' pcbResult : DWORD* out
' dwFlags : BCRYPT_FLAGS
Declare PtrSafe Function BCryptDecrypt Lib "bcrypt" ( _
    ByVal hKey As LongPtr, _
    ByVal pbInput As LongPtr, _
    ByVal cbInput As Long, _
    ByVal pPaddingInfo As LongPtr, _
    ByVal pbIV As LongPtr, _
    ByVal cbIV As Long, _
    ByVal pbOutput As LongPtr, _
    ByVal cbOutput As Long, _
    ByRef pcbResult As Long, _
    ByVal dwFlags 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

BCryptDecrypt = ctypes.windll.bcrypt.BCryptDecrypt
BCryptDecrypt.restype = ctypes.c_int
BCryptDecrypt.argtypes = [
    wintypes.HANDLE,  # hKey : BCRYPT_KEY_HANDLE in/out
    ctypes.POINTER(ctypes.c_ubyte),  # pbInput : BYTE* optional
    wintypes.DWORD,  # cbInput : DWORD
    ctypes.POINTER(None),  # pPaddingInfo : void* optional
    ctypes.POINTER(ctypes.c_ubyte),  # pbIV : BYTE* optional, in/out
    wintypes.DWORD,  # cbIV : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # pbOutput : BYTE* optional, out
    wintypes.DWORD,  # cbOutput : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pcbResult : DWORD* out
    wintypes.DWORD,  # dwFlags : BCRYPT_FLAGS
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('bcrypt.dll')
BCryptDecrypt = Fiddle::Function.new(
  lib['BCryptDecrypt'],
  [
    Fiddle::TYPE_VOIDP,  # hKey : BCRYPT_KEY_HANDLE in/out
    Fiddle::TYPE_VOIDP,  # pbInput : BYTE* optional
    -Fiddle::TYPE_INT,  # cbInput : DWORD
    Fiddle::TYPE_VOIDP,  # pPaddingInfo : void* optional
    Fiddle::TYPE_VOIDP,  # pbIV : BYTE* optional, in/out
    -Fiddle::TYPE_INT,  # cbIV : DWORD
    Fiddle::TYPE_VOIDP,  # pbOutput : BYTE* optional, out
    -Fiddle::TYPE_INT,  # cbOutput : DWORD
    Fiddle::TYPE_VOIDP,  # pcbResult : DWORD* out
    -Fiddle::TYPE_INT,  # dwFlags : BCRYPT_FLAGS
  ],
  Fiddle::TYPE_INT)

#[link(name = "bcrypt")]
extern "system" {
    fn BCryptDecrypt(
        hKey: *mut core::ffi::c_void,  // BCRYPT_KEY_HANDLE in/out
        pbInput: *mut u8,  // BYTE* optional
        cbInput: u32,  // DWORD
        pPaddingInfo: *mut (),  // void* optional
        pbIV: *mut u8,  // BYTE* optional, in/out
        cbIV: u32,  // DWORD
        pbOutput: *mut u8,  // BYTE* optional, out
        cbOutput: u32,  // DWORD
        pcbResult: *mut u32,  // DWORD* out
        dwFlags: u32  // BCRYPT_FLAGS
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("bcrypt.dll")]
public static extern int BCryptDecrypt(IntPtr hKey, IntPtr pbInput, uint cbInput, IntPtr pPaddingInfo, IntPtr pbIV, uint cbIV, IntPtr pbOutput, uint cbOutput, out uint pcbResult, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'bcrypt_BCryptDecrypt' -Namespace Win32 -PassThru
# $api::BCryptDecrypt(hKey, pbInput, cbInput, pPaddingInfo, pbIV, cbIV, pbOutput, cbOutput, pcbResult, dwFlags)

#uselib "bcrypt.dll"
#func global BCryptDecrypt "BCryptDecrypt" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; BCryptDecrypt hKey, varptr(pbInput), cbInput, pPaddingInfo, varptr(pbIV), cbIV, varptr(pbOutput), cbOutput, varptr(pcbResult), dwFlags   ; 戻り値は stat
; hKey : BCRYPT_KEY_HANDLE in/out -> "sptr"
; pbInput : BYTE* optional -> "sptr"
; cbInput : DWORD -> "sptr"
; pPaddingInfo : void* optional -> "sptr"
; pbIV : BYTE* optional, in/out -> "sptr"
; cbIV : DWORD -> "sptr"
; pbOutput : BYTE* optional, out -> "sptr"
; cbOutput : DWORD -> "sptr"
; pcbResult : DWORD* out -> "sptr"
; dwFlags : BCRYPT_FLAGS -> "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。

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

var (
	bcrypt = windows.NewLazySystemDLL("bcrypt.dll")
	procBCryptDecrypt = bcrypt.NewProc("BCryptDecrypt")
)

// hKey (BCRYPT_KEY_HANDLE in/out), pbInput (BYTE* optional), cbInput (DWORD), pPaddingInfo (void* optional), pbIV (BYTE* optional, in/out), cbIV (DWORD), pbOutput (BYTE* optional, out), cbOutput (DWORD), pcbResult (DWORD* out), dwFlags (BCRYPT_FLAGS)
r1, _, err := procBCryptDecrypt.Call(
	uintptr(hKey),
	uintptr(pbInput),
	uintptr(cbInput),
	uintptr(pPaddingInfo),
	uintptr(pbIV),
	uintptr(cbIV),
	uintptr(pbOutput),
	uintptr(cbOutput),
	uintptr(pcbResult),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // NTSTATUS

function BCryptDecrypt(
  hKey: THandle;   // BCRYPT_KEY_HANDLE in/out
  pbInput: Pointer;   // BYTE* optional
  cbInput: DWORD;   // DWORD
  pPaddingInfo: Pointer;   // void* optional
  pbIV: Pointer;   // BYTE* optional, in/out
  cbIV: DWORD;   // DWORD
  pbOutput: Pointer;   // BYTE* optional, out
  cbOutput: DWORD;   // DWORD
  pcbResult: Pointer;   // DWORD* out
  dwFlags: DWORD   // BCRYPT_FLAGS
): Integer; stdcall;
  external 'bcrypt.dll' name 'BCryptDecrypt';

result := DllCall("bcrypt\BCryptDecrypt"
    , "Ptr", hKey   ; BCRYPT_KEY_HANDLE in/out
    , "Ptr", pbInput   ; BYTE* optional
    , "UInt", cbInput   ; DWORD
    , "Ptr", pPaddingInfo   ; void* optional
    , "Ptr", pbIV   ; BYTE* optional, in/out
    , "UInt", cbIV   ; DWORD
    , "Ptr", pbOutput   ; BYTE* optional, out
    , "UInt", cbOutput   ; DWORD
    , "Ptr", pcbResult   ; DWORD* out
    , "UInt", dwFlags   ; BCRYPT_FLAGS
    , "Int")   ; return: NTSTATUS

●BCryptDecrypt(hKey, pbInput, cbInput, pPaddingInfo, pbIV, cbIV, pbOutput, cbOutput, pcbResult, dwFlags) = DLL("bcrypt.dll", "int BCryptDecrypt(void*, void*, dword, void*, void*, dword, void*, dword, void*, dword)")
# 呼び出し: BCryptDecrypt(hKey, pbInput, cbInput, pPaddingInfo, pbIV, cbIV, pbOutput, cbOutput, pcbResult, dwFlags)
# hKey : BCRYPT_KEY_HANDLE in/out -> "void*"
# pbInput : BYTE* optional -> "void*"
# cbInput : DWORD -> "dword"
# pPaddingInfo : void* optional -> "void*"
# pbIV : BYTE* optional, in/out -> "void*"
# cbIV : DWORD -> "dword"
# pbOutput : BYTE* optional, out -> "void*"
# cbOutput : DWORD -> "dword"
# pcbResult : DWORD* out -> "void*"
# dwFlags : BCRYPT_FLAGS -> "dword"
# 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)。

const std = @import("std");

extern "bcrypt" fn BCryptDecrypt(
    hKey: ?*anyopaque, // BCRYPT_KEY_HANDLE in/out
    pbInput: [*c]u8, // BYTE* optional
    cbInput: u32, // DWORD
    pPaddingInfo: ?*anyopaque, // void* optional
    pbIV: [*c]u8, // BYTE* optional, in/out
    cbIV: u32, // DWORD
    pbOutput: [*c]u8, // BYTE* optional, out
    cbOutput: u32, // DWORD
    pcbResult: [*c]u32, // DWORD* out
    dwFlags: u32 // BCRYPT_FLAGS
) callconv(std.os.windows.WINAPI) i32;

proc BCryptDecrypt(
    hKey: pointer,  # BCRYPT_KEY_HANDLE in/out
    pbInput: ptr uint8,  # BYTE* optional
    cbInput: uint32,  # DWORD
    pPaddingInfo: pointer,  # void* optional
    pbIV: ptr uint8,  # BYTE* optional, in/out
    cbIV: uint32,  # DWORD
    pbOutput: ptr uint8,  # BYTE* optional, out
    cbOutput: uint32,  # DWORD
    pcbResult: ptr uint32,  # DWORD* out
    dwFlags: uint32  # BCRYPT_FLAGS
): int32 {.importc: "BCryptDecrypt", stdcall, dynlib: "bcrypt.dll".}

pragma(lib, "bcrypt");
extern(Windows)
int BCryptDecrypt(
    void* hKey,   // BCRYPT_KEY_HANDLE in/out
    ubyte* pbInput,   // BYTE* optional
    uint cbInput,   // DWORD
    void* pPaddingInfo,   // void* optional
    ubyte* pbIV,   // BYTE* optional, in/out
    uint cbIV,   // DWORD
    ubyte* pbOutput,   // BYTE* optional, out
    uint cbOutput,   // DWORD
    uint* pcbResult,   // DWORD* out
    uint dwFlags   // BCRYPT_FLAGS
);

ccall((:BCryptDecrypt, "bcrypt.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{UInt8}, UInt32, Ptr{Cvoid}, Ptr{UInt8}, UInt32, Ptr{UInt8}, UInt32, Ptr{UInt32}, UInt32),
      hKey, pbInput, cbInput, pPaddingInfo, pbIV, cbIV, pbOutput, cbOutput, pcbResult, dwFlags)
# hKey : BCRYPT_KEY_HANDLE in/out -> Ptr{Cvoid}
# pbInput : BYTE* optional -> Ptr{UInt8}
# cbInput : DWORD -> UInt32
# pPaddingInfo : void* optional -> Ptr{Cvoid}
# pbIV : BYTE* optional, in/out -> Ptr{UInt8}
# cbIV : DWORD -> UInt32
# pbOutput : BYTE* optional, out -> Ptr{UInt8}
# cbOutput : DWORD -> UInt32
# pcbResult : DWORD* out -> Ptr{UInt32}
# dwFlags : BCRYPT_FLAGS -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t BCryptDecrypt(
    void* hKey,
    uint8_t* pbInput,
    uint32_t cbInput,
    void* pPaddingInfo,
    uint8_t* pbIV,
    uint32_t cbIV,
    uint8_t* pbOutput,
    uint32_t cbOutput,
    uint32_t* pcbResult,
    uint32_t dwFlags);
]]
local bcrypt = ffi.load("bcrypt")
-- bcrypt.BCryptDecrypt(hKey, pbInput, cbInput, pPaddingInfo, pbIV, cbIV, pbOutput, cbOutput, pcbResult, dwFlags)
-- hKey : BCRYPT_KEY_HANDLE in/out
-- pbInput : BYTE* optional
-- cbInput : DWORD
-- pPaddingInfo : void* optional
-- pbIV : BYTE* optional, in/out
-- cbIV : DWORD
-- pbOutput : BYTE* optional, out
-- cbOutput : DWORD
-- pcbResult : DWORD* out
-- dwFlags : BCRYPT_FLAGS
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('bcrypt.dll');
const BCryptDecrypt = lib.func('__stdcall', 'BCryptDecrypt', 'int32_t', ['void *', 'uint8_t *', 'uint32_t', 'void *', 'uint8_t *', 'uint32_t', 'uint8_t *', 'uint32_t', 'uint32_t *', 'uint32_t']);
// BCryptDecrypt(hKey, pbInput, cbInput, pPaddingInfo, pbIV, cbIV, pbOutput, cbOutput, pcbResult, dwFlags)
// hKey : BCRYPT_KEY_HANDLE in/out -> 'void *'
// pbInput : BYTE* optional -> 'uint8_t *'
// cbInput : DWORD -> 'uint32_t'
// pPaddingInfo : void* optional -> 'void *'
// pbIV : BYTE* optional, in/out -> 'uint8_t *'
// cbIV : DWORD -> 'uint32_t'
// pbOutput : BYTE* optional, out -> 'uint8_t *'
// cbOutput : DWORD -> 'uint32_t'
// pcbResult : DWORD* out -> 'uint32_t *'
// dwFlags : BCRYPT_FLAGS -> 'uint32_t'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("bcrypt.dll", {
  BCryptDecrypt: { parameters: ["pointer", "pointer", "u32", "pointer", "pointer", "u32", "pointer", "u32", "pointer", "u32"], result: "i32" },
});
// lib.symbols.BCryptDecrypt(hKey, pbInput, cbInput, pPaddingInfo, pbIV, cbIV, pbOutput, cbOutput, pcbResult, dwFlags)
// hKey : BCRYPT_KEY_HANDLE in/out -> "pointer"
// pbInput : BYTE* optional -> "pointer"
// cbInput : DWORD -> "u32"
// pPaddingInfo : void* optional -> "pointer"
// pbIV : BYTE* optional, in/out -> "pointer"
// cbIV : DWORD -> "u32"
// pbOutput : BYTE* optional, out -> "pointer"
// cbOutput : DWORD -> "u32"
// pcbResult : DWORD* out -> "pointer"
// dwFlags : BCRYPT_FLAGS -> "u32"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t BCryptDecrypt(
    void* hKey,
    uint8_t* pbInput,
    uint32_t cbInput,
    void* pPaddingInfo,
    uint8_t* pbIV,
    uint32_t cbIV,
    uint8_t* pbOutput,
    uint32_t cbOutput,
    uint32_t* pcbResult,
    uint32_t dwFlags);
C, "bcrypt.dll");
// $ffi->BCryptDecrypt(hKey, pbInput, cbInput, pPaddingInfo, pbIV, cbIV, pbOutput, cbOutput, pcbResult, dwFlags);
// hKey : BCRYPT_KEY_HANDLE in/out
// pbInput : BYTE* optional
// cbInput : DWORD
// pPaddingInfo : void* optional
// pbIV : BYTE* optional, in/out
// cbIV : DWORD
// pbOutput : BYTE* optional, out
// cbOutput : DWORD
// pcbResult : DWORD* out
// dwFlags : BCRYPT_FLAGS
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Bcrypt extends StdCallLibrary {
    Bcrypt INSTANCE = Native.load("bcrypt", Bcrypt.class);
    int BCryptDecrypt(
        Pointer hKey,   // BCRYPT_KEY_HANDLE in/out
        byte[] pbInput,   // BYTE* optional
        int cbInput,   // DWORD
        Pointer pPaddingInfo,   // void* optional
        byte[] pbIV,   // BYTE* optional, in/out
        int cbIV,   // DWORD
        byte[] pbOutput,   // BYTE* optional, out
        int cbOutput,   // DWORD
        IntByReference pcbResult,   // DWORD* out
        int dwFlags   // BCRYPT_FLAGS
    );
}

@[Link("bcrypt")]
lib Libbcrypt
  fun BCryptDecrypt = BCryptDecrypt(
    hKey : Void*,   # BCRYPT_KEY_HANDLE in/out
    pbInput : UInt8*,   # BYTE* optional
    cbInput : UInt32,   # DWORD
    pPaddingInfo : Void*,   # void* optional
    pbIV : UInt8*,   # BYTE* optional, in/out
    cbIV : UInt32,   # DWORD
    pbOutput : UInt8*,   # BYTE* optional, out
    cbOutput : UInt32,   # DWORD
    pcbResult : UInt32*,   # DWORD* out
    dwFlags : UInt32   # BCRYPT_FLAGS
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef BCryptDecryptNative = Int32 Function(Pointer<Void>, Pointer<Uint8>, Uint32, Pointer<Void>, Pointer<Uint8>, Uint32, Pointer<Uint8>, Uint32, Pointer<Uint32>, Uint32);
typedef BCryptDecryptDart = int Function(Pointer<Void>, Pointer<Uint8>, int, Pointer<Void>, Pointer<Uint8>, int, Pointer<Uint8>, int, Pointer<Uint32>, int);
final BCryptDecrypt = DynamicLibrary.open('bcrypt.dll')
    .lookupFunction<BCryptDecryptNative, BCryptDecryptDart>('BCryptDecrypt');
// hKey : BCRYPT_KEY_HANDLE in/out -> Pointer<Void>
// pbInput : BYTE* optional -> Pointer<Uint8>
// cbInput : DWORD -> Uint32
// pPaddingInfo : void* optional -> Pointer<Void>
// pbIV : BYTE* optional, in/out -> Pointer<Uint8>
// cbIV : DWORD -> Uint32
// pbOutput : BYTE* optional, out -> Pointer<Uint8>
// cbOutput : DWORD -> Uint32
// pcbResult : DWORD* out -> Pointer<Uint32>
// dwFlags : BCRYPT_FLAGS -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function BCryptDecrypt(
  hKey: THandle;   // BCRYPT_KEY_HANDLE in/out
  pbInput: Pointer;   // BYTE* optional
  cbInput: DWORD;   // DWORD
  pPaddingInfo: Pointer;   // void* optional
  pbIV: Pointer;   // BYTE* optional, in/out
  cbIV: DWORD;   // DWORD
  pbOutput: Pointer;   // BYTE* optional, out
  cbOutput: DWORD;   // DWORD
  pcbResult: Pointer;   // DWORD* out
  dwFlags: DWORD   // BCRYPT_FLAGS
): Integer; stdcall;
  external 'bcrypt.dll' name 'BCryptDecrypt';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "BCryptDecrypt"
  c_BCryptDecrypt :: Ptr () -> Ptr Word8 -> Word32 -> Ptr () -> Ptr Word8 -> Word32 -> Ptr Word8 -> Word32 -> Ptr Word32 -> Word32 -> IO Int32
-- hKey : BCRYPT_KEY_HANDLE in/out -> Ptr ()
-- pbInput : BYTE* optional -> Ptr Word8
-- cbInput : DWORD -> Word32
-- pPaddingInfo : void* optional -> Ptr ()
-- pbIV : BYTE* optional, in/out -> Ptr Word8
-- cbIV : DWORD -> Word32
-- pbOutput : BYTE* optional, out -> Ptr Word8
-- cbOutput : DWORD -> Word32
-- pcbResult : DWORD* out -> Ptr Word32
-- dwFlags : BCRYPT_FLAGS -> Word32
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let bcryptdecrypt =
  foreign "BCryptDecrypt"
    ((ptr void) @-> (ptr uint8_t) @-> uint32_t @-> (ptr void) @-> (ptr uint8_t) @-> uint32_t @-> (ptr uint8_t) @-> uint32_t @-> (ptr uint32_t) @-> uint32_t @-> returning int32_t)
(* hKey : BCRYPT_KEY_HANDLE in/out -> (ptr void) *)
(* pbInput : BYTE* optional -> (ptr uint8_t) *)
(* cbInput : DWORD -> uint32_t *)
(* pPaddingInfo : void* optional -> (ptr void) *)
(* pbIV : BYTE* optional, in/out -> (ptr uint8_t) *)
(* cbIV : DWORD -> uint32_t *)
(* pbOutput : BYTE* optional, out -> (ptr uint8_t) *)
(* cbOutput : DWORD -> uint32_t *)
(* pcbResult : DWORD* out -> (ptr uint32_t) *)
(* dwFlags : BCRYPT_FLAGS -> uint32_t *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library bcrypt (t "bcrypt.dll"))
(cffi:use-foreign-library bcrypt)

(cffi:defcfun ("BCryptDecrypt" bcrypt-decrypt :convention :stdcall) :int32
  (h-key :pointer)   ; BCRYPT_KEY_HANDLE in/out
  (pb-input :pointer)   ; BYTE* optional
  (cb-input :uint32)   ; DWORD
  (p-padding-info :pointer)   ; void* optional
  (pb-iv :pointer)   ; BYTE* optional, in/out
  (cb-iv :uint32)   ; DWORD
  (pb-output :pointer)   ; BYTE* optional, out
  (cb-output :uint32)   ; DWORD
  (pcb-result :pointer)   ; DWORD* out
  (dw-flags :uint32))   ; BCRYPT_FLAGS
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $BCryptDecrypt = Win32::API::More->new('bcrypt',
    'int BCryptDecrypt(HANDLE hKey, LPVOID pbInput, DWORD cbInput, LPVOID pPaddingInfo, LPVOID pbIV, DWORD cbIV, LPVOID pbOutput, DWORD cbOutput, LPVOID pcbResult, DWORD dwFlags)');
# my $ret = $BCryptDecrypt->Call($hKey, $pbInput, $cbInput, $pPaddingInfo, $pbIV, $cbIV, $pbOutput, $cbOutput, $pcbResult, $dwFlags);
# hKey : BCRYPT_KEY_HANDLE in/out -> HANDLE
# pbInput : BYTE* optional -> LPVOID
# cbInput : DWORD -> DWORD
# pPaddingInfo : void* optional -> LPVOID
# pbIV : BYTE* optional, in/out -> LPVOID
# cbIV : DWORD -> DWORD
# pbOutput : BYTE* optional, out -> LPVOID
# cbOutput : DWORD -> DWORD
# pcbResult : DWORD* out -> LPVOID
# dwFlags : BCRYPT_FLAGS -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。