CryptGenKey

// ADVAPI32.dll
#include <windows.h>

BOOL CryptGenKey(
    UINT_PTR hProv,
    ALG_ID Algid,
    CRYPT_KEY_FLAGS dwFlags,
    UINT_PTR* phKey
);

<DllImport("ADVAPI32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CryptGenKey(
    hProv As UIntPtr,   ' UINT_PTR
    Algid As UInteger,   ' ALG_ID
    dwFlags As UInteger,   ' CRYPT_KEY_FLAGS
    <Out> ByRef phKey As UIntPtr   ' UINT_PTR* out
) As Boolean
End Function

' hProv : UINT_PTR
' Algid : ALG_ID
' dwFlags : CRYPT_KEY_FLAGS
' phKey : UINT_PTR* out
Declare PtrSafe Function CryptGenKey Lib "advapi32" ( _
    ByVal hProv As LongPtr, _
    ByVal Algid As Long, _
    ByVal dwFlags As Long, _
    ByRef phKey As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CryptGenKey = ctypes.windll.advapi32.CryptGenKey
CryptGenKey.restype = wintypes.BOOL
CryptGenKey.argtypes = [
    ctypes.c_size_t,  # hProv : UINT_PTR
    wintypes.DWORD,  # Algid : ALG_ID
    wintypes.DWORD,  # dwFlags : CRYPT_KEY_FLAGS
    ctypes.POINTER(ctypes.c_size_t),  # phKey : UINT_PTR* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
CryptGenKey = Fiddle::Function.new(
  lib['CryptGenKey'],
  [
    Fiddle::TYPE_UINTPTR_T,  # hProv : UINT_PTR
    -Fiddle::TYPE_INT,  # Algid : ALG_ID
    -Fiddle::TYPE_INT,  # dwFlags : CRYPT_KEY_FLAGS
    Fiddle::TYPE_VOIDP,  # phKey : UINT_PTR* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "advapi32")]
extern "system" {
    fn CryptGenKey(
        hProv: usize,  // UINT_PTR
        Algid: u32,  // ALG_ID
        dwFlags: u32,  // CRYPT_KEY_FLAGS
        phKey: *mut usize  // UINT_PTR* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", SetLastError = true)]
public static extern bool CryptGenKey(UIntPtr hProv, uint Algid, uint dwFlags, out UIntPtr phKey);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_CryptGenKey' -Namespace Win32 -PassThru
# $api::CryptGenKey(hProv, Algid, dwFlags, phKey)

#uselib "ADVAPI32.dll"
#func global CryptGenKey "CryptGenKey" sptr, sptr, sptr, sptr
; CryptGenKey hProv, Algid, dwFlags, varptr(phKey)   ; 戻り値は stat
; hProv : UINT_PTR -> "sptr"
; Algid : ALG_ID -> "sptr"
; dwFlags : CRYPT_KEY_FLAGS -> "sptr"
; phKey : UINT_PTR* 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 "ADVAPI32.dll"
#cfunc global CryptGenKey "CryptGenKey" sptr, int, int, var
; res = CryptGenKey(hProv, Algid, dwFlags, phKey)
; hProv : UINT_PTR -> "sptr"
; Algid : ALG_ID -> "int"
; dwFlags : CRYPT_KEY_FLAGS -> "int"
; phKey : UINT_PTR* 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。

; BOOL CryptGenKey(UINT_PTR hProv, ALG_ID Algid, CRYPT_KEY_FLAGS dwFlags, UINT_PTR* phKey)
#uselib "ADVAPI32.dll"
#cfunc global CryptGenKey "CryptGenKey" intptr, int, int, var
; res = CryptGenKey(hProv, Algid, dwFlags, phKey)
; hProv : UINT_PTR -> "intptr"
; Algid : ALG_ID -> "int"
; dwFlags : CRYPT_KEY_FLAGS -> "int"
; phKey : UINT_PTR* 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 (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procCryptGenKey = advapi32.NewProc("CryptGenKey")
)

// hProv (UINT_PTR), Algid (ALG_ID), dwFlags (CRYPT_KEY_FLAGS), phKey (UINT_PTR* out)
r1, _, err := procCryptGenKey.Call(
	uintptr(hProv),
	uintptr(Algid),
	uintptr(dwFlags),
	uintptr(phKey),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CryptGenKey(
  hProv: NativeUInt;   // UINT_PTR
  Algid: DWORD;   // ALG_ID
  dwFlags: DWORD;   // CRYPT_KEY_FLAGS
  phKey: Pointer   // UINT_PTR* out
): BOOL; stdcall;
  external 'ADVAPI32.dll' name 'CryptGenKey';

result := DllCall("ADVAPI32\CryptGenKey"
    , "UPtr", hProv   ; UINT_PTR
    , "UInt", Algid   ; ALG_ID
    , "UInt", dwFlags   ; CRYPT_KEY_FLAGS
    , "Ptr", phKey   ; UINT_PTR* out
    , "Int")   ; return: BOOL

●CryptGenKey(hProv, Algid, dwFlags, phKey) = DLL("ADVAPI32.dll", "bool CryptGenKey(int, dword, dword, void*)")
# 呼び出し: CryptGenKey(hProv, Algid, dwFlags, phKey)
# hProv : UINT_PTR -> "int"
# Algid : ALG_ID -> "dword"
# dwFlags : CRYPT_KEY_FLAGS -> "dword"
# phKey : UINT_PTR* 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)。