BCryptSecretAgreement

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

NTSTATUS BCryptSecretAgreement(
    BCRYPT_KEY_HANDLE hPrivKey,
    BCRYPT_KEY_HANDLE hPubKey,
    BCRYPT_SECRET_HANDLE* phAgreedSecret,
    DWORD dwFlags
);

<DllImport("bcrypt.dll", ExactSpelling:=True)>
Public Shared Function BCryptSecretAgreement(
    hPrivKey As IntPtr,   ' BCRYPT_KEY_HANDLE
    hPubKey As IntPtr,   ' BCRYPT_KEY_HANDLE
    phAgreedSecret As IntPtr,   ' BCRYPT_SECRET_HANDLE* out
    dwFlags As UInteger   ' DWORD
) As Integer
End Function

' hPrivKey : BCRYPT_KEY_HANDLE
' hPubKey : BCRYPT_KEY_HANDLE
' phAgreedSecret : BCRYPT_SECRET_HANDLE* out
' dwFlags : DWORD
Declare PtrSafe Function BCryptSecretAgreement Lib "bcrypt" ( _
    ByVal hPrivKey As LongPtr, _
    ByVal hPubKey As LongPtr, _
    ByVal phAgreedSecret As LongPtr, _
    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

BCryptSecretAgreement = ctypes.windll.bcrypt.BCryptSecretAgreement
BCryptSecretAgreement.restype = ctypes.c_int
BCryptSecretAgreement.argtypes = [
    wintypes.HANDLE,  # hPrivKey : BCRYPT_KEY_HANDLE
    wintypes.HANDLE,  # hPubKey : BCRYPT_KEY_HANDLE
    ctypes.c_void_p,  # phAgreedSecret : BCRYPT_SECRET_HANDLE* out
    wintypes.DWORD,  # dwFlags : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('bcrypt.dll')
BCryptSecretAgreement = Fiddle::Function.new(
  lib['BCryptSecretAgreement'],
  [
    Fiddle::TYPE_VOIDP,  # hPrivKey : BCRYPT_KEY_HANDLE
    Fiddle::TYPE_VOIDP,  # hPubKey : BCRYPT_KEY_HANDLE
    Fiddle::TYPE_VOIDP,  # phAgreedSecret : BCRYPT_SECRET_HANDLE* out
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "bcrypt")]
extern "system" {
    fn BCryptSecretAgreement(
        hPrivKey: *mut core::ffi::c_void,  // BCRYPT_KEY_HANDLE
        hPubKey: *mut core::ffi::c_void,  // BCRYPT_KEY_HANDLE
        phAgreedSecret: *mut *mut core::ffi::c_void,  // BCRYPT_SECRET_HANDLE* out
        dwFlags: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("bcrypt.dll")]
public static extern int BCryptSecretAgreement(IntPtr hPrivKey, IntPtr hPubKey, IntPtr phAgreedSecret, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'bcrypt_BCryptSecretAgreement' -Namespace Win32 -PassThru
# $api::BCryptSecretAgreement(hPrivKey, hPubKey, phAgreedSecret, dwFlags)

#uselib "bcrypt.dll"
#func global BCryptSecretAgreement "BCryptSecretAgreement" sptr, sptr, sptr, sptr
; BCryptSecretAgreement hPrivKey, hPubKey, phAgreedSecret, dwFlags   ; 戻り値は stat
; hPrivKey : BCRYPT_KEY_HANDLE -> "sptr"
; hPubKey : BCRYPT_KEY_HANDLE -> "sptr"
; phAgreedSecret : BCRYPT_SECRET_HANDLE* out -> "sptr"
; dwFlags : DWORD -> "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 "bcrypt.dll"
#cfunc global BCryptSecretAgreement "BCryptSecretAgreement" sptr, sptr, sptr, int
; res = BCryptSecretAgreement(hPrivKey, hPubKey, phAgreedSecret, dwFlags)
; hPrivKey : BCRYPT_KEY_HANDLE -> "sptr"
; hPubKey : BCRYPT_KEY_HANDLE -> "sptr"
; phAgreedSecret : BCRYPT_SECRET_HANDLE* out -> "sptr"
; dwFlags : DWORD -> "int"

; NTSTATUS BCryptSecretAgreement(BCRYPT_KEY_HANDLE hPrivKey, BCRYPT_KEY_HANDLE hPubKey, BCRYPT_SECRET_HANDLE* phAgreedSecret, DWORD dwFlags)
#uselib "bcrypt.dll"
#cfunc global BCryptSecretAgreement "BCryptSecretAgreement" intptr, intptr, intptr, int
; res = BCryptSecretAgreement(hPrivKey, hPubKey, phAgreedSecret, dwFlags)
; hPrivKey : BCRYPT_KEY_HANDLE -> "intptr"
; hPubKey : BCRYPT_KEY_HANDLE -> "intptr"
; phAgreedSecret : BCRYPT_SECRET_HANDLE* out -> "intptr"
; dwFlags : DWORD -> "int"

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

var (
	bcrypt = windows.NewLazySystemDLL("bcrypt.dll")
	procBCryptSecretAgreement = bcrypt.NewProc("BCryptSecretAgreement")
)

// hPrivKey (BCRYPT_KEY_HANDLE), hPubKey (BCRYPT_KEY_HANDLE), phAgreedSecret (BCRYPT_SECRET_HANDLE* out), dwFlags (DWORD)
r1, _, err := procBCryptSecretAgreement.Call(
	uintptr(hPrivKey),
	uintptr(hPubKey),
	uintptr(phAgreedSecret),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // NTSTATUS

function BCryptSecretAgreement(
  hPrivKey: THandle;   // BCRYPT_KEY_HANDLE
  hPubKey: THandle;   // BCRYPT_KEY_HANDLE
  phAgreedSecret: Pointer;   // BCRYPT_SECRET_HANDLE* out
  dwFlags: DWORD   // DWORD
): Integer; stdcall;
  external 'bcrypt.dll' name 'BCryptSecretAgreement';

result := DllCall("bcrypt\BCryptSecretAgreement"
    , "Ptr", hPrivKey   ; BCRYPT_KEY_HANDLE
    , "Ptr", hPubKey   ; BCRYPT_KEY_HANDLE
    , "Ptr", phAgreedSecret   ; BCRYPT_SECRET_HANDLE* out
    , "UInt", dwFlags   ; DWORD
    , "Int")   ; return: NTSTATUS

●BCryptSecretAgreement(hPrivKey, hPubKey, phAgreedSecret, dwFlags) = DLL("bcrypt.dll", "int BCryptSecretAgreement(void*, void*, void*, dword)")
# 呼び出し: BCryptSecretAgreement(hPrivKey, hPubKey, phAgreedSecret, dwFlags)
# hPrivKey : BCRYPT_KEY_HANDLE -> "void*"
# hPubKey : BCRYPT_KEY_HANDLE -> "void*"
# phAgreedSecret : BCRYPT_SECRET_HANDLE* out -> "void*"
# dwFlags : DWORD -> "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)。