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CryptAcquireContextW

関数

暗号化サービスプロバイダーのコンテキストハンドルを取得する(Unicode版)。

DLLADVAPI32.dll文字セットUnicode (-W)呼出規約winapiSetLastErrorあり対応OSWindows XP 以降

シグネチャ

// ADVAPI32.dll  (Unicode / -W)
#include <windows.h>

BOOL CryptAcquireContextW(
    UINT_PTR* phProv,
    LPCWSTR szContainer,   // optional
    LPCWSTR szProvider,   // optional
    DWORD dwProvType,
    DWORD dwFlags
);

パラメーター

名前	型	方向
phProv	UINT_PTR*	out
szContainer	LPCWSTR	inoptional
szProvider	LPCWSTR	inoptional
dwProvType	DWORD	in
dwFlags	DWORD	in

戻り値の型: BOOL

各言語での呼び出し定義

// ADVAPI32.dll  (Unicode / -W)
#include <windows.h>

BOOL CryptAcquireContextW(
    UINT_PTR* phProv,
    LPCWSTR szContainer,   // optional
    LPCWSTR szProvider,   // optional
    DWORD dwProvType,
    DWORD dwFlags
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", CharSet = CharSet.Unicode, SetLastError = true, ExactSpelling = true)]
static extern bool CryptAcquireContextW(
    out UIntPtr phProv,   // UINT_PTR* out
    [MarshalAs(UnmanagedType.LPWStr)] string szContainer,   // LPCWSTR optional
    [MarshalAs(UnmanagedType.LPWStr)] string szProvider,   // LPCWSTR optional
    uint dwProvType,   // DWORD
    uint dwFlags   // DWORD
);

<DllImport("ADVAPI32.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CryptAcquireContextW(
    <Out> ByRef phProv As UIntPtr,   ' UINT_PTR* out
    <MarshalAs(UnmanagedType.LPWStr)> szContainer As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> szProvider As String,   ' LPCWSTR optional
    dwProvType As UInteger,   ' DWORD
    dwFlags As UInteger   ' DWORD
) As Boolean
End Function

' phProv : UINT_PTR* out
' szContainer : LPCWSTR optional
' szProvider : LPCWSTR optional
' dwProvType : DWORD
' dwFlags : DWORD
Declare PtrSafe Function CryptAcquireContextW Lib "advapi32" ( _
    ByRef phProv As LongPtr, _
    ByVal szContainer As LongPtr, _
    ByVal szProvider As LongPtr, _
    ByVal dwProvType As Long, _
    ByVal dwFlags As Long) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CryptAcquireContextW = ctypes.windll.advapi32.CryptAcquireContextW
CryptAcquireContextW.restype = wintypes.BOOL
CryptAcquireContextW.argtypes = [
    ctypes.POINTER(ctypes.c_size_t),  # phProv : UINT_PTR* out
    wintypes.LPCWSTR,  # szContainer : LPCWSTR optional
    wintypes.LPCWSTR,  # szProvider : LPCWSTR optional
    wintypes.DWORD,  # dwProvType : DWORD
    wintypes.DWORD,  # dwFlags : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
CryptAcquireContextW = Fiddle::Function.new(
  lib['CryptAcquireContextW'],
  [
    Fiddle::TYPE_VOIDP,  # phProv : UINT_PTR* out
    Fiddle::TYPE_VOIDP,  # szContainer : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # szProvider : LPCWSTR optional
    -Fiddle::TYPE_INT,  # dwProvType : DWORD
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "advapi32")]
extern "system" {
    fn CryptAcquireContextW(
        phProv: *mut usize,  // UINT_PTR* out
        szContainer: *const u16,  // LPCWSTR optional
        szProvider: *const u16,  // LPCWSTR optional
        dwProvType: u32,  // DWORD
        dwFlags: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern bool CryptAcquireContextW(out UIntPtr phProv, [MarshalAs(UnmanagedType.LPWStr)] string szContainer, [MarshalAs(UnmanagedType.LPWStr)] string szProvider, uint dwProvType, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_CryptAcquireContextW' -Namespace Win32 -PassThru
# $api::CryptAcquireContextW(phProv, szContainer, szProvider, dwProvType, dwFlags)

#uselib "ADVAPI32.dll"
#func global CryptAcquireContextW "CryptAcquireContextW" wptr, wptr, wptr, wptr, wptr
; CryptAcquireContextW varptr(phProv), szContainer, szProvider, dwProvType, dwFlags   ; 戻り値は stat
; phProv : UINT_PTR* out -> "wptr"
; szContainer : LPCWSTR optional -> "wptr"
; szProvider : LPCWSTR optional -> "wptr"
; dwProvType : DWORD -> "wptr"
; dwFlags : DWORD -> "wptr"
; ※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。

出力引数:

#uselib "ADVAPI32.dll"
#cfunc global CryptAcquireContextW "CryptAcquireContextW" var, wstr, wstr, int, int
; res = CryptAcquireContextW(phProv, szContainer, szProvider, dwProvType, dwFlags)
; phProv : UINT_PTR* out -> "var"
; szContainer : LPCWSTR optional -> "wstr"
; szProvider : LPCWSTR optional -> "wstr"
; dwProvType : DWORD -> "int"
; dwFlags : DWORD -> "int"
; ※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。#uselib "ADVAPI32.dll"
#cfunc global CryptAcquireContextW "CryptAcquireContextW" sptr, wstr, wstr, int, int
; res = CryptAcquireContextW(varptr(phProv), szContainer, szProvider, dwProvType, dwFlags)
; phProv : UINT_PTR* out -> "sptr"
; szContainer : LPCWSTR optional -> "wstr"
; szProvider : LPCWSTR optional -> "wstr"
; dwProvType : DWORD -> "int"
; dwFlags : DWORD -> "int"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; BOOL CryptAcquireContextW(UINT_PTR* phProv, LPCWSTR szContainer, LPCWSTR szProvider, DWORD dwProvType, DWORD dwFlags)
#uselib "ADVAPI32.dll"
#cfunc global CryptAcquireContextW "CryptAcquireContextW" var, wstr, wstr, int, int
; res = CryptAcquireContextW(phProv, szContainer, szProvider, dwProvType, dwFlags)
; phProv : UINT_PTR* out -> "var"
; szContainer : LPCWSTR optional -> "wstr"
; szProvider : LPCWSTR optional -> "wstr"
; dwProvType : DWORD -> "int"
; dwFlags : DWORD -> "int"
; ※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 CryptAcquireContextW(UINT_PTR* phProv, LPCWSTR szContainer, LPCWSTR szProvider, DWORD dwProvType, DWORD dwFlags)
#uselib "ADVAPI32.dll"
#cfunc global CryptAcquireContextW "CryptAcquireContextW" intptr, wstr, wstr, int, int
; res = CryptAcquireContextW(varptr(phProv), szContainer, szProvider, dwProvType, dwFlags)
; phProv : UINT_PTR* out -> "intptr"
; szContainer : LPCWSTR optional -> "wstr"
; szProvider : LPCWSTR optional -> "wstr"
; dwProvType : DWORD -> "int"
; dwFlags : DWORD -> "int"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procCryptAcquireContextW = advapi32.NewProc("CryptAcquireContextW")
)

// phProv (UINT_PTR* out), szContainer (LPCWSTR optional), szProvider (LPCWSTR optional), dwProvType (DWORD), dwFlags (DWORD)
r1, _, err := procCryptAcquireContextW.Call(
	uintptr(phProv),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(szContainer))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(szProvider))),
	uintptr(dwProvType),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CryptAcquireContextW(
  phProv: Pointer;   // UINT_PTR* out
  szContainer: PWideChar;   // LPCWSTR optional
  szProvider: PWideChar;   // LPCWSTR optional
  dwProvType: DWORD;   // DWORD
  dwFlags: DWORD   // DWORD
): BOOL; stdcall;
  external 'ADVAPI32.dll' name 'CryptAcquireContextW';

result := DllCall("ADVAPI32\CryptAcquireContextW"
    , "Ptr", phProv   ; UINT_PTR* out
    , "WStr", szContainer   ; LPCWSTR optional
    , "WStr", szProvider   ; LPCWSTR optional
    , "UInt", dwProvType   ; DWORD
    , "UInt", dwFlags   ; DWORD
    , "Int")   ; return: BOOL

●CryptAcquireContextW(phProv, szContainer, szProvider, dwProvType, dwFlags) = DLL("ADVAPI32.dll", "bool CryptAcquireContextW(void*, char*, char*, dword, dword)")
# 呼び出し: CryptAcquireContextW(phProv, szContainer, szProvider, dwProvType, dwFlags)
# phProv : UINT_PTR* out -> "void*"
# szContainer : LPCWSTR optional -> "char*"
# szProvider : LPCWSTR optional -> "char*"
# dwProvType : DWORD -> "dword"
# 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。