BCryptRegisterProvider

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

NTSTATUS BCryptRegisterProvider(
    LPCWSTR pszProvider,
    DWORD dwFlags,
    CRYPT_PROVIDER_REG* pReg
);

<DllImport("bcrypt.dll", ExactSpelling:=True)>
Public Shared Function BCryptRegisterProvider(
    <MarshalAs(UnmanagedType.LPWStr)> pszProvider As String,   ' LPCWSTR
    dwFlags As UInteger,   ' DWORD
    pReg As IntPtr   ' CRYPT_PROVIDER_REG*
) As Integer
End Function

' pszProvider : LPCWSTR
' dwFlags : DWORD
' pReg : CRYPT_PROVIDER_REG*
Declare PtrSafe Function BCryptRegisterProvider Lib "bcrypt" ( _
    ByVal pszProvider As LongPtr, _
    ByVal dwFlags As Long, _
    ByVal pReg 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

BCryptRegisterProvider = ctypes.windll.bcrypt.BCryptRegisterProvider
BCryptRegisterProvider.restype = ctypes.c_int
BCryptRegisterProvider.argtypes = [
    wintypes.LPCWSTR,  # pszProvider : LPCWSTR
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.c_void_p,  # pReg : CRYPT_PROVIDER_REG*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('bcrypt.dll')
BCryptRegisterProvider = Fiddle::Function.new(
  lib['BCryptRegisterProvider'],
  [
    Fiddle::TYPE_VOIDP,  # pszProvider : LPCWSTR
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # pReg : CRYPT_PROVIDER_REG*
  ],
  Fiddle::TYPE_INT)

#[link(name = "bcrypt")]
extern "system" {
    fn BCryptRegisterProvider(
        pszProvider: *const u16,  // LPCWSTR
        dwFlags: u32,  // DWORD
        pReg: *mut CRYPT_PROVIDER_REG  // CRYPT_PROVIDER_REG*
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("bcrypt.dll")]
public static extern int BCryptRegisterProvider([MarshalAs(UnmanagedType.LPWStr)] string pszProvider, uint dwFlags, IntPtr pReg);
"@
$api = Add-Type -MemberDefinition $sig -Name 'bcrypt_BCryptRegisterProvider' -Namespace Win32 -PassThru
# $api::BCryptRegisterProvider(pszProvider, dwFlags, pReg)

#uselib "bcrypt.dll"
#func global BCryptRegisterProvider "BCryptRegisterProvider" sptr, sptr, sptr
; BCryptRegisterProvider pszProvider, dwFlags, varptr(pReg)   ; 戻り値は stat
; pszProvider : LPCWSTR -> "sptr"
; dwFlags : DWORD -> "sptr"
; pReg : CRYPT_PROVIDER_REG* -> "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 BCryptRegisterProvider "BCryptRegisterProvider" wstr, int, var
; res = BCryptRegisterProvider(pszProvider, dwFlags, pReg)
; pszProvider : LPCWSTR -> "wstr"
; dwFlags : DWORD -> "int"
; pReg : CRYPT_PROVIDER_REG* -> "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。

; NTSTATUS BCryptRegisterProvider(LPCWSTR pszProvider, DWORD dwFlags, CRYPT_PROVIDER_REG* pReg)
#uselib "bcrypt.dll"
#cfunc global BCryptRegisterProvider "BCryptRegisterProvider" wstr, int, var
; res = BCryptRegisterProvider(pszProvider, dwFlags, pReg)
; pszProvider : LPCWSTR -> "wstr"
; dwFlags : DWORD -> "int"
; pReg : CRYPT_PROVIDER_REG* -> "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 (
	bcrypt = windows.NewLazySystemDLL("bcrypt.dll")
	procBCryptRegisterProvider = bcrypt.NewProc("BCryptRegisterProvider")
)

// pszProvider (LPCWSTR), dwFlags (DWORD), pReg (CRYPT_PROVIDER_REG*)
r1, _, err := procBCryptRegisterProvider.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszProvider))),
	uintptr(dwFlags),
	uintptr(pReg),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // NTSTATUS

function BCryptRegisterProvider(
  pszProvider: PWideChar;   // LPCWSTR
  dwFlags: DWORD;   // DWORD
  pReg: Pointer   // CRYPT_PROVIDER_REG*
): Integer; stdcall;
  external 'bcrypt.dll' name 'BCryptRegisterProvider';

result := DllCall("bcrypt\BCryptRegisterProvider"
    , "WStr", pszProvider   ; LPCWSTR
    , "UInt", dwFlags   ; DWORD
    , "Ptr", pReg   ; CRYPT_PROVIDER_REG*
    , "Int")   ; return: NTSTATUS

●BCryptRegisterProvider(pszProvider, dwFlags, pReg) = DLL("bcrypt.dll", "int BCryptRegisterProvider(char*, dword, void*)")
# 呼び出し: BCryptRegisterProvider(pszProvider, dwFlags, pReg)
# pszProvider : LPCWSTR -> "char*"
# dwFlags : DWORD -> "dword"
# pReg : CRYPT_PROVIDER_REG* -> "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)。