NCryptOpenKey

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

HRESULT NCryptOpenKey(
    NCRYPT_PROV_HANDLE hProvider,
    NCRYPT_KEY_HANDLE* phKey,
    LPCWSTR pszKeyName,
    CERT_KEY_SPEC dwLegacyKeySpec,
    NCRYPT_FLAGS dwFlags
);

<DllImport("ncrypt.dll", ExactSpelling:=True)>
Public Shared Function NCryptOpenKey(
    hProvider As UIntPtr,   ' NCRYPT_PROV_HANDLE
    <Out> ByRef phKey As UIntPtr,   ' NCRYPT_KEY_HANDLE* out
    <MarshalAs(UnmanagedType.LPWStr)> pszKeyName As String,   ' LPCWSTR
    dwLegacyKeySpec As UInteger,   ' CERT_KEY_SPEC
    dwFlags As UInteger   ' NCRYPT_FLAGS
) As Integer
End Function

' hProvider : NCRYPT_PROV_HANDLE
' phKey : NCRYPT_KEY_HANDLE* out
' pszKeyName : LPCWSTR
' dwLegacyKeySpec : CERT_KEY_SPEC
' dwFlags : NCRYPT_FLAGS
Declare PtrSafe Function NCryptOpenKey Lib "ncrypt" ( _
    ByVal hProvider As LongPtr, _
    ByRef phKey As LongPtr, _
    ByVal pszKeyName As LongPtr, _
    ByVal dwLegacyKeySpec 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

NCryptOpenKey = ctypes.windll.ncrypt.NCryptOpenKey
NCryptOpenKey.restype = ctypes.c_int
NCryptOpenKey.argtypes = [
    ctypes.c_size_t,  # hProvider : NCRYPT_PROV_HANDLE
    ctypes.c_void_p,  # phKey : NCRYPT_KEY_HANDLE* out
    wintypes.LPCWSTR,  # pszKeyName : LPCWSTR
    wintypes.DWORD,  # dwLegacyKeySpec : CERT_KEY_SPEC
    wintypes.DWORD,  # dwFlags : NCRYPT_FLAGS
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ncrypt.dll')
NCryptOpenKey = Fiddle::Function.new(
  lib['NCryptOpenKey'],
  [
    Fiddle::TYPE_UINTPTR_T,  # hProvider : NCRYPT_PROV_HANDLE
    Fiddle::TYPE_VOIDP,  # phKey : NCRYPT_KEY_HANDLE* out
    Fiddle::TYPE_VOIDP,  # pszKeyName : LPCWSTR
    -Fiddle::TYPE_INT,  # dwLegacyKeySpec : CERT_KEY_SPEC
    -Fiddle::TYPE_INT,  # dwFlags : NCRYPT_FLAGS
  ],
  Fiddle::TYPE_INT)

#[link(name = "ncrypt")]
extern "system" {
    fn NCryptOpenKey(
        hProvider: usize,  // NCRYPT_PROV_HANDLE
        phKey: *mut usize,  // NCRYPT_KEY_HANDLE* out
        pszKeyName: *const u16,  // LPCWSTR
        dwLegacyKeySpec: u32,  // CERT_KEY_SPEC
        dwFlags: u32  // NCRYPT_FLAGS
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ncrypt.dll")]
public static extern int NCryptOpenKey(UIntPtr hProvider, out UIntPtr phKey, [MarshalAs(UnmanagedType.LPWStr)] string pszKeyName, uint dwLegacyKeySpec, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ncrypt_NCryptOpenKey' -Namespace Win32 -PassThru
# $api::NCryptOpenKey(hProvider, phKey, pszKeyName, dwLegacyKeySpec, dwFlags)

#uselib "ncrypt.dll"
#func global NCryptOpenKey "NCryptOpenKey" sptr, sptr, sptr, sptr, sptr
; NCryptOpenKey hProvider, phKey, pszKeyName, dwLegacyKeySpec, dwFlags   ; 戻り値は stat
; hProvider : NCRYPT_PROV_HANDLE -> "sptr"
; phKey : NCRYPT_KEY_HANDLE* out -> "sptr"
; pszKeyName : LPCWSTR -> "sptr"
; dwLegacyKeySpec : CERT_KEY_SPEC -> "sptr"
; dwFlags : NCRYPT_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。

#uselib "ncrypt.dll"
#cfunc global NCryptOpenKey "NCryptOpenKey" sptr, int, wstr, int, int
; res = NCryptOpenKey(hProvider, phKey, pszKeyName, dwLegacyKeySpec, dwFlags)
; hProvider : NCRYPT_PROV_HANDLE -> "sptr"
; phKey : NCRYPT_KEY_HANDLE* out -> "int"
; pszKeyName : LPCWSTR -> "wstr"
; dwLegacyKeySpec : CERT_KEY_SPEC -> "int"
; dwFlags : NCRYPT_FLAGS -> "int"

; HRESULT NCryptOpenKey(NCRYPT_PROV_HANDLE hProvider, NCRYPT_KEY_HANDLE* phKey, LPCWSTR pszKeyName, CERT_KEY_SPEC dwLegacyKeySpec, NCRYPT_FLAGS dwFlags)
#uselib "ncrypt.dll"
#cfunc global NCryptOpenKey "NCryptOpenKey" intptr, int, wstr, int, int
; res = NCryptOpenKey(hProvider, phKey, pszKeyName, dwLegacyKeySpec, dwFlags)
; hProvider : NCRYPT_PROV_HANDLE -> "intptr"
; phKey : NCRYPT_KEY_HANDLE* out -> "int"
; pszKeyName : LPCWSTR -> "wstr"
; dwLegacyKeySpec : CERT_KEY_SPEC -> "int"
; dwFlags : NCRYPT_FLAGS -> "int"

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

var (
	ncrypt = windows.NewLazySystemDLL("ncrypt.dll")
	procNCryptOpenKey = ncrypt.NewProc("NCryptOpenKey")
)

// hProvider (NCRYPT_PROV_HANDLE), phKey (NCRYPT_KEY_HANDLE* out), pszKeyName (LPCWSTR), dwLegacyKeySpec (CERT_KEY_SPEC), dwFlags (NCRYPT_FLAGS)
r1, _, err := procNCryptOpenKey.Call(
	uintptr(hProvider),
	uintptr(phKey),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszKeyName))),
	uintptr(dwLegacyKeySpec),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function NCryptOpenKey(
  hProvider: NativeUInt;   // NCRYPT_PROV_HANDLE
  phKey: Pointer;   // NCRYPT_KEY_HANDLE* out
  pszKeyName: PWideChar;   // LPCWSTR
  dwLegacyKeySpec: DWORD;   // CERT_KEY_SPEC
  dwFlags: DWORD   // NCRYPT_FLAGS
): Integer; stdcall;
  external 'ncrypt.dll' name 'NCryptOpenKey';

result := DllCall("ncrypt\NCryptOpenKey"
    , "UPtr", hProvider   ; NCRYPT_PROV_HANDLE
    , "Ptr", phKey   ; NCRYPT_KEY_HANDLE* out
    , "WStr", pszKeyName   ; LPCWSTR
    , "UInt", dwLegacyKeySpec   ; CERT_KEY_SPEC
    , "UInt", dwFlags   ; NCRYPT_FLAGS
    , "Int")   ; return: HRESULT

●NCryptOpenKey(hProvider, phKey, pszKeyName, dwLegacyKeySpec, dwFlags) = DLL("ncrypt.dll", "int NCryptOpenKey(int, void*, char*, dword, dword)")
# 呼び出し: NCryptOpenKey(hProvider, phKey, pszKeyName, dwLegacyKeySpec, dwFlags)
# hProvider : NCRYPT_PROV_HANDLE -> "int"
# phKey : NCRYPT_KEY_HANDLE* out -> "void*"
# pszKeyName : LPCWSTR -> "char*"
# dwLegacyKeySpec : CERT_KEY_SPEC -> "dword"
# dwFlags : NCRYPT_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)。