BCryptOpenAlgorithmProvider

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

NTSTATUS BCryptOpenAlgorithmProvider(
    BCRYPT_ALG_HANDLE* phAlgorithm,
    LPCWSTR pszAlgId,
    LPCWSTR pszImplementation,   // optional
    BCRYPT_OPEN_ALGORITHM_PROVIDER_FLAGS dwFlags
);

<DllImport("bcrypt.dll", ExactSpelling:=True)>
Public Shared Function BCryptOpenAlgorithmProvider(
    phAlgorithm As IntPtr,   ' BCRYPT_ALG_HANDLE* out
    <MarshalAs(UnmanagedType.LPWStr)> pszAlgId As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> pszImplementation As String,   ' LPCWSTR optional
    dwFlags As UInteger   ' BCRYPT_OPEN_ALGORITHM_PROVIDER_FLAGS
) As Integer
End Function

' phAlgorithm : BCRYPT_ALG_HANDLE* out
' pszAlgId : LPCWSTR
' pszImplementation : LPCWSTR optional
' dwFlags : BCRYPT_OPEN_ALGORITHM_PROVIDER_FLAGS
Declare PtrSafe Function BCryptOpenAlgorithmProvider Lib "bcrypt" ( _
    ByVal phAlgorithm As LongPtr, _
    ByVal pszAlgId As LongPtr, _
    ByVal pszImplementation 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

BCryptOpenAlgorithmProvider = ctypes.windll.bcrypt.BCryptOpenAlgorithmProvider
BCryptOpenAlgorithmProvider.restype = ctypes.c_int
BCryptOpenAlgorithmProvider.argtypes = [
    ctypes.c_void_p,  # phAlgorithm : BCRYPT_ALG_HANDLE* out
    wintypes.LPCWSTR,  # pszAlgId : LPCWSTR
    wintypes.LPCWSTR,  # pszImplementation : LPCWSTR optional
    wintypes.DWORD,  # dwFlags : BCRYPT_OPEN_ALGORITHM_PROVIDER_FLAGS
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('bcrypt.dll')
BCryptOpenAlgorithmProvider = Fiddle::Function.new(
  lib['BCryptOpenAlgorithmProvider'],
  [
    Fiddle::TYPE_VOIDP,  # phAlgorithm : BCRYPT_ALG_HANDLE* out
    Fiddle::TYPE_VOIDP,  # pszAlgId : LPCWSTR
    Fiddle::TYPE_VOIDP,  # pszImplementation : LPCWSTR optional
    -Fiddle::TYPE_INT,  # dwFlags : BCRYPT_OPEN_ALGORITHM_PROVIDER_FLAGS
  ],
  Fiddle::TYPE_INT)

#[link(name = "bcrypt")]
extern "system" {
    fn BCryptOpenAlgorithmProvider(
        phAlgorithm: *mut *mut core::ffi::c_void,  // BCRYPT_ALG_HANDLE* out
        pszAlgId: *const u16,  // LPCWSTR
        pszImplementation: *const u16,  // LPCWSTR optional
        dwFlags: u32  // BCRYPT_OPEN_ALGORITHM_PROVIDER_FLAGS
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

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

#uselib "bcrypt.dll"
#func global BCryptOpenAlgorithmProvider "BCryptOpenAlgorithmProvider" sptr, sptr, sptr, sptr
; BCryptOpenAlgorithmProvider phAlgorithm, pszAlgId, pszImplementation, dwFlags   ; 戻り値は stat
; phAlgorithm : BCRYPT_ALG_HANDLE* out -> "sptr"
; pszAlgId : LPCWSTR -> "sptr"
; pszImplementation : LPCWSTR optional -> "sptr"
; dwFlags : BCRYPT_OPEN_ALGORITHM_PROVIDER_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 "bcrypt.dll"
#cfunc global BCryptOpenAlgorithmProvider "BCryptOpenAlgorithmProvider" sptr, wstr, wstr, int
; res = BCryptOpenAlgorithmProvider(phAlgorithm, pszAlgId, pszImplementation, dwFlags)
; phAlgorithm : BCRYPT_ALG_HANDLE* out -> "sptr"
; pszAlgId : LPCWSTR -> "wstr"
; pszImplementation : LPCWSTR optional -> "wstr"
; dwFlags : BCRYPT_OPEN_ALGORITHM_PROVIDER_FLAGS -> "int"

; NTSTATUS BCryptOpenAlgorithmProvider(BCRYPT_ALG_HANDLE* phAlgorithm, LPCWSTR pszAlgId, LPCWSTR pszImplementation, BCRYPT_OPEN_ALGORITHM_PROVIDER_FLAGS dwFlags)
#uselib "bcrypt.dll"
#cfunc global BCryptOpenAlgorithmProvider "BCryptOpenAlgorithmProvider" intptr, wstr, wstr, int
; res = BCryptOpenAlgorithmProvider(phAlgorithm, pszAlgId, pszImplementation, dwFlags)
; phAlgorithm : BCRYPT_ALG_HANDLE* out -> "intptr"
; pszAlgId : LPCWSTR -> "wstr"
; pszImplementation : LPCWSTR optional -> "wstr"
; dwFlags : BCRYPT_OPEN_ALGORITHM_PROVIDER_FLAGS -> "int"

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

var (
	bcrypt = windows.NewLazySystemDLL("bcrypt.dll")
	procBCryptOpenAlgorithmProvider = bcrypt.NewProc("BCryptOpenAlgorithmProvider")
)

// phAlgorithm (BCRYPT_ALG_HANDLE* out), pszAlgId (LPCWSTR), pszImplementation (LPCWSTR optional), dwFlags (BCRYPT_OPEN_ALGORITHM_PROVIDER_FLAGS)
r1, _, err := procBCryptOpenAlgorithmProvider.Call(
	uintptr(phAlgorithm),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszAlgId))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszImplementation))),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // NTSTATUS

function BCryptOpenAlgorithmProvider(
  phAlgorithm: Pointer;   // BCRYPT_ALG_HANDLE* out
  pszAlgId: PWideChar;   // LPCWSTR
  pszImplementation: PWideChar;   // LPCWSTR optional
  dwFlags: DWORD   // BCRYPT_OPEN_ALGORITHM_PROVIDER_FLAGS
): Integer; stdcall;
  external 'bcrypt.dll' name 'BCryptOpenAlgorithmProvider';

result := DllCall("bcrypt\BCryptOpenAlgorithmProvider"
    , "Ptr", phAlgorithm   ; BCRYPT_ALG_HANDLE* out
    , "WStr", pszAlgId   ; LPCWSTR
    , "WStr", pszImplementation   ; LPCWSTR optional
    , "UInt", dwFlags   ; BCRYPT_OPEN_ALGORITHM_PROVIDER_FLAGS
    , "Int")   ; return: NTSTATUS

●BCryptOpenAlgorithmProvider(phAlgorithm, pszAlgId, pszImplementation, dwFlags) = DLL("bcrypt.dll", "int BCryptOpenAlgorithmProvider(void*, char*, char*, dword)")
# 呼び出し: BCryptOpenAlgorithmProvider(phAlgorithm, pszAlgId, pszImplementation, dwFlags)
# phAlgorithm : BCRYPT_ALG_HANDLE* out -> "void*"
# pszAlgId : LPCWSTR -> "char*"
# pszImplementation : LPCWSTR optional -> "char*"
# dwFlags : BCRYPT_OPEN_ALGORITHM_PROVIDER_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)。