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CertCreateCTLContext

関数

エンコードされたCTLからCTLコンテキストを作成する。

DLLCRYPT32.dll呼出規約winapiSetLastErrorあり対応OSWindows XP 以降

シグネチャ

// CRYPT32.dll
#include <windows.h>

CTL_CONTEXT* CertCreateCTLContext(
    DWORD dwMsgAndCertEncodingType,
    const BYTE* pbCtlEncoded,
    DWORD cbCtlEncoded
);

パラメーター

名前	型	方向
dwMsgAndCertEncodingType	DWORD	in
pbCtlEncoded	BYTE*	in
cbCtlEncoded	DWORD	in

戻り値の型: CTL_CONTEXT*

各言語での呼び出し定義

// CRYPT32.dll
#include <windows.h>

CTL_CONTEXT* CertCreateCTLContext(
    DWORD dwMsgAndCertEncodingType,
    const BYTE* pbCtlEncoded,
    DWORD cbCtlEncoded
);

[DllImport("CRYPT32.dll", SetLastError = true, ExactSpelling = true)]
static extern IntPtr CertCreateCTLContext(
    uint dwMsgAndCertEncodingType,   // DWORD
    IntPtr pbCtlEncoded,   // BYTE*
    uint cbCtlEncoded   // DWORD
);

<DllImport("CRYPT32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CertCreateCTLContext(
    dwMsgAndCertEncodingType As UInteger,   ' DWORD
    pbCtlEncoded As IntPtr,   ' BYTE*
    cbCtlEncoded As UInteger   ' DWORD
) As IntPtr
End Function

' dwMsgAndCertEncodingType : DWORD
' pbCtlEncoded : BYTE*
' cbCtlEncoded : DWORD
Declare PtrSafe Function CertCreateCTLContext Lib "crypt32" ( _
    ByVal dwMsgAndCertEncodingType As Long, _
    ByVal pbCtlEncoded As LongPtr, _
    ByVal cbCtlEncoded As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CertCreateCTLContext = ctypes.windll.crypt32.CertCreateCTLContext
CertCreateCTLContext.restype = ctypes.c_void_p
CertCreateCTLContext.argtypes = [
    wintypes.DWORD,  # dwMsgAndCertEncodingType : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # pbCtlEncoded : BYTE*
    wintypes.DWORD,  # cbCtlEncoded : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CRYPT32.dll')
CertCreateCTLContext = Fiddle::Function.new(
  lib['CertCreateCTLContext'],
  [
    -Fiddle::TYPE_INT,  # dwMsgAndCertEncodingType : DWORD
    Fiddle::TYPE_VOIDP,  # pbCtlEncoded : BYTE*
    -Fiddle::TYPE_INT,  # cbCtlEncoded : DWORD
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "crypt32")]
extern "system" {
    fn CertCreateCTLContext(
        dwMsgAndCertEncodingType: u32,  // DWORD
        pbCtlEncoded: *const u8,  // BYTE*
        cbCtlEncoded: u32  // DWORD
    ) -> *mut CTL_CONTEXT;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("CRYPT32.dll", SetLastError = true)]
public static extern IntPtr CertCreateCTLContext(uint dwMsgAndCertEncodingType, IntPtr pbCtlEncoded, uint cbCtlEncoded);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CRYPT32_CertCreateCTLContext' -Namespace Win32 -PassThru
# $api::CertCreateCTLContext(dwMsgAndCertEncodingType, pbCtlEncoded, cbCtlEncoded)

#uselib "CRYPT32.dll"
#func global CertCreateCTLContext "CertCreateCTLContext" sptr, sptr, sptr
; CertCreateCTLContext dwMsgAndCertEncodingType, varptr(pbCtlEncoded), cbCtlEncoded   ; 戻り値は stat
; dwMsgAndCertEncodingType : DWORD -> "sptr"
; pbCtlEncoded : BYTE* -> "sptr"
; cbCtlEncoded : DWORD -> "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。

出力引数:

#uselib "CRYPT32.dll"
#cfunc global CertCreateCTLContext "CertCreateCTLContext" int, var, int
; res = CertCreateCTLContext(dwMsgAndCertEncodingType, pbCtlEncoded, cbCtlEncoded)
; dwMsgAndCertEncodingType : DWORD -> "int"
; pbCtlEncoded : BYTE* -> "var"
; cbCtlEncoded : 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 "CRYPT32.dll"
#cfunc global CertCreateCTLContext "CertCreateCTLContext" int, sptr, int
; res = CertCreateCTLContext(dwMsgAndCertEncodingType, varptr(pbCtlEncoded), cbCtlEncoded)
; dwMsgAndCertEncodingType : DWORD -> "int"
; pbCtlEncoded : BYTE* -> "sptr"
; cbCtlEncoded : 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:

; CTL_CONTEXT* CertCreateCTLContext(DWORD dwMsgAndCertEncodingType, BYTE* pbCtlEncoded, DWORD cbCtlEncoded)
#uselib "CRYPT32.dll"
#cfunc global CertCreateCTLContext "CertCreateCTLContext" int, var, int
; res = CertCreateCTLContext(dwMsgAndCertEncodingType, pbCtlEncoded, cbCtlEncoded)
; dwMsgAndCertEncodingType : DWORD -> "int"
; pbCtlEncoded : BYTE* -> "var"
; cbCtlEncoded : 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。; CTL_CONTEXT* CertCreateCTLContext(DWORD dwMsgAndCertEncodingType, BYTE* pbCtlEncoded, DWORD cbCtlEncoded)
#uselib "CRYPT32.dll"
#cfunc global CertCreateCTLContext "CertCreateCTLContext" int, intptr, int
; res = CertCreateCTLContext(dwMsgAndCertEncodingType, varptr(pbCtlEncoded), cbCtlEncoded)
; dwMsgAndCertEncodingType : DWORD -> "int"
; pbCtlEncoded : BYTE* -> "intptr"
; cbCtlEncoded : 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 (
	crypt32 = windows.NewLazySystemDLL("CRYPT32.dll")
	procCertCreateCTLContext = crypt32.NewProc("CertCreateCTLContext")
)

// dwMsgAndCertEncodingType (DWORD), pbCtlEncoded (BYTE*), cbCtlEncoded (DWORD)
r1, _, err := procCertCreateCTLContext.Call(
	uintptr(dwMsgAndCertEncodingType),
	uintptr(pbCtlEncoded),
	uintptr(cbCtlEncoded),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // CTL_CONTEXT*

function CertCreateCTLContext(
  dwMsgAndCertEncodingType: DWORD;   // DWORD
  pbCtlEncoded: Pointer;   // BYTE*
  cbCtlEncoded: DWORD   // DWORD
): Pointer; stdcall;
  external 'CRYPT32.dll' name 'CertCreateCTLContext';

result := DllCall("CRYPT32\CertCreateCTLContext"
    , "UInt", dwMsgAndCertEncodingType   ; DWORD
    , "Ptr", pbCtlEncoded   ; BYTE*
    , "UInt", cbCtlEncoded   ; DWORD
    , "Ptr")   ; return: CTL_CONTEXT*

●CertCreateCTLContext(dwMsgAndCertEncodingType, pbCtlEncoded, cbCtlEncoded) = DLL("CRYPT32.dll", "void* CertCreateCTLContext(dword, void*, dword)")
# 呼び出し: CertCreateCTLContext(dwMsgAndCertEncodingType, pbCtlEncoded, cbCtlEncoded)
# dwMsgAndCertEncodingType : DWORD -> "dword"
# pbCtlEncoded : BYTE* -> "void*"
# cbCtlEncoded : 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)。