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CryptMsgOpenToEncode

関数

エンコード用の暗号メッセージ(PKCS#7/CMS)を開く。

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>

void* CryptMsgOpenToEncode(
    DWORD dwMsgEncodingType,
    DWORD dwFlags,
    CRYPT_MSG_TYPE dwMsgType,
    const void* pvMsgEncodeInfo,
    LPSTR pszInnerContentObjID,   // optional
    CMSG_STREAM_INFO* pStreamInfo   // optional
);

パラメーター

名前	型	方向
dwMsgEncodingType	DWORD	in
dwFlags	DWORD	in
dwMsgType	CRYPT_MSG_TYPE	in
pvMsgEncodeInfo	void*	in
pszInnerContentObjID	LPSTR	inoptional
pStreamInfo	CMSG_STREAM_INFO*	inoptional

戻り値の型: void*

各言語での呼び出し定義

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

void* CryptMsgOpenToEncode(
    DWORD dwMsgEncodingType,
    DWORD dwFlags,
    CRYPT_MSG_TYPE dwMsgType,
    const void* pvMsgEncodeInfo,
    LPSTR pszInnerContentObjID,   // optional
    CMSG_STREAM_INFO* pStreamInfo   // optional
);

[DllImport("CRYPT32.dll", SetLastError = true, ExactSpelling = true)]
static extern IntPtr CryptMsgOpenToEncode(
    uint dwMsgEncodingType,   // DWORD
    uint dwFlags,   // DWORD
    uint dwMsgType,   // CRYPT_MSG_TYPE
    IntPtr pvMsgEncodeInfo,   // void*
    [MarshalAs(UnmanagedType.LPStr)] string pszInnerContentObjID,   // LPSTR optional
    IntPtr pStreamInfo   // CMSG_STREAM_INFO* optional
);

<DllImport("CRYPT32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CryptMsgOpenToEncode(
    dwMsgEncodingType As UInteger,   ' DWORD
    dwFlags As UInteger,   ' DWORD
    dwMsgType As UInteger,   ' CRYPT_MSG_TYPE
    pvMsgEncodeInfo As IntPtr,   ' void*
    <MarshalAs(UnmanagedType.LPStr)> pszInnerContentObjID As String,   ' LPSTR optional
    pStreamInfo As IntPtr   ' CMSG_STREAM_INFO* optional
) As IntPtr
End Function

' dwMsgEncodingType : DWORD
' dwFlags : DWORD
' dwMsgType : CRYPT_MSG_TYPE
' pvMsgEncodeInfo : void*
' pszInnerContentObjID : LPSTR optional
' pStreamInfo : CMSG_STREAM_INFO* optional
Declare PtrSafe Function CryptMsgOpenToEncode Lib "crypt32" ( _
    ByVal dwMsgEncodingType As Long, _
    ByVal dwFlags As Long, _
    ByVal dwMsgType As Long, _
    ByVal pvMsgEncodeInfo As LongPtr, _
    ByVal pszInnerContentObjID As String, _
    ByVal pStreamInfo As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CryptMsgOpenToEncode = ctypes.windll.crypt32.CryptMsgOpenToEncode
CryptMsgOpenToEncode.restype = ctypes.c_void_p
CryptMsgOpenToEncode.argtypes = [
    wintypes.DWORD,  # dwMsgEncodingType : DWORD
    wintypes.DWORD,  # dwFlags : DWORD
    wintypes.DWORD,  # dwMsgType : CRYPT_MSG_TYPE
    ctypes.POINTER(None),  # pvMsgEncodeInfo : void*
    wintypes.LPCSTR,  # pszInnerContentObjID : LPSTR optional
    ctypes.c_void_p,  # pStreamInfo : CMSG_STREAM_INFO* optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CRYPT32.dll')
CryptMsgOpenToEncode = Fiddle::Function.new(
  lib['CryptMsgOpenToEncode'],
  [
    -Fiddle::TYPE_INT,  # dwMsgEncodingType : DWORD
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    -Fiddle::TYPE_INT,  # dwMsgType : CRYPT_MSG_TYPE
    Fiddle::TYPE_VOIDP,  # pvMsgEncodeInfo : void*
    Fiddle::TYPE_VOIDP,  # pszInnerContentObjID : LPSTR optional
    Fiddle::TYPE_VOIDP,  # pStreamInfo : CMSG_STREAM_INFO* optional
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "crypt32")]
extern "system" {
    fn CryptMsgOpenToEncode(
        dwMsgEncodingType: u32,  // DWORD
        dwFlags: u32,  // DWORD
        dwMsgType: u32,  // CRYPT_MSG_TYPE
        pvMsgEncodeInfo: *const (),  // void*
        pszInnerContentObjID: *mut u8,  // LPSTR optional
        pStreamInfo: *mut CMSG_STREAM_INFO  // CMSG_STREAM_INFO* optional
    ) -> *mut ();
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("CRYPT32.dll", SetLastError = true)]
public static extern IntPtr CryptMsgOpenToEncode(uint dwMsgEncodingType, uint dwFlags, uint dwMsgType, IntPtr pvMsgEncodeInfo, [MarshalAs(UnmanagedType.LPStr)] string pszInnerContentObjID, IntPtr pStreamInfo);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CRYPT32_CryptMsgOpenToEncode' -Namespace Win32 -PassThru
# $api::CryptMsgOpenToEncode(dwMsgEncodingType, dwFlags, dwMsgType, pvMsgEncodeInfo, pszInnerContentObjID, pStreamInfo)

#uselib "CRYPT32.dll"
#func global CryptMsgOpenToEncode "CryptMsgOpenToEncode" sptr, sptr, sptr, sptr, sptr, sptr
; CryptMsgOpenToEncode dwMsgEncodingType, dwFlags, dwMsgType, pvMsgEncodeInfo, pszInnerContentObjID, varptr(pStreamInfo)   ; 戻り値は stat
; dwMsgEncodingType : DWORD -> "sptr"
; dwFlags : DWORD -> "sptr"
; dwMsgType : CRYPT_MSG_TYPE -> "sptr"
; pvMsgEncodeInfo : void* -> "sptr"
; pszInnerContentObjID : LPSTR optional -> "sptr"
; pStreamInfo : CMSG_STREAM_INFO* optional -> "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 CryptMsgOpenToEncode "CryptMsgOpenToEncode" int, int, int, sptr, str, var
; res = CryptMsgOpenToEncode(dwMsgEncodingType, dwFlags, dwMsgType, pvMsgEncodeInfo, pszInnerContentObjID, pStreamInfo)
; dwMsgEncodingType : DWORD -> "int"
; dwFlags : DWORD -> "int"
; dwMsgType : CRYPT_MSG_TYPE -> "int"
; pvMsgEncodeInfo : void* -> "sptr"
; pszInnerContentObjID : LPSTR optional -> "str"
; pStreamInfo : CMSG_STREAM_INFO* optional -> "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。#uselib "CRYPT32.dll"
#cfunc global CryptMsgOpenToEncode "CryptMsgOpenToEncode" int, int, int, sptr, str, sptr
; res = CryptMsgOpenToEncode(dwMsgEncodingType, dwFlags, dwMsgType, pvMsgEncodeInfo, pszInnerContentObjID, varptr(pStreamInfo))
; dwMsgEncodingType : DWORD -> "int"
; dwFlags : DWORD -> "int"
; dwMsgType : CRYPT_MSG_TYPE -> "int"
; pvMsgEncodeInfo : void* -> "sptr"
; pszInnerContentObjID : LPSTR optional -> "str"
; pStreamInfo : CMSG_STREAM_INFO* optional -> "sptr"
; ※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:

; void* CryptMsgOpenToEncode(DWORD dwMsgEncodingType, DWORD dwFlags, CRYPT_MSG_TYPE dwMsgType, void* pvMsgEncodeInfo, LPSTR pszInnerContentObjID, CMSG_STREAM_INFO* pStreamInfo)
#uselib "CRYPT32.dll"
#cfunc global CryptMsgOpenToEncode "CryptMsgOpenToEncode" int, int, int, intptr, str, var
; res = CryptMsgOpenToEncode(dwMsgEncodingType, dwFlags, dwMsgType, pvMsgEncodeInfo, pszInnerContentObjID, pStreamInfo)
; dwMsgEncodingType : DWORD -> "int"
; dwFlags : DWORD -> "int"
; dwMsgType : CRYPT_MSG_TYPE -> "int"
; pvMsgEncodeInfo : void* -> "intptr"
; pszInnerContentObjID : LPSTR optional -> "str"
; pStreamInfo : CMSG_STREAM_INFO* optional -> "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。; void* CryptMsgOpenToEncode(DWORD dwMsgEncodingType, DWORD dwFlags, CRYPT_MSG_TYPE dwMsgType, void* pvMsgEncodeInfo, LPSTR pszInnerContentObjID, CMSG_STREAM_INFO* pStreamInfo)
#uselib "CRYPT32.dll"
#cfunc global CryptMsgOpenToEncode "CryptMsgOpenToEncode" int, int, int, intptr, str, intptr
; res = CryptMsgOpenToEncode(dwMsgEncodingType, dwFlags, dwMsgType, pvMsgEncodeInfo, pszInnerContentObjID, varptr(pStreamInfo))
; dwMsgEncodingType : DWORD -> "int"
; dwFlags : DWORD -> "int"
; dwMsgType : CRYPT_MSG_TYPE -> "int"
; pvMsgEncodeInfo : void* -> "intptr"
; pszInnerContentObjID : LPSTR optional -> "str"
; pStreamInfo : CMSG_STREAM_INFO* optional -> "intptr"
; ※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")
	procCryptMsgOpenToEncode = crypt32.NewProc("CryptMsgOpenToEncode")
)

// dwMsgEncodingType (DWORD), dwFlags (DWORD), dwMsgType (CRYPT_MSG_TYPE), pvMsgEncodeInfo (void*), pszInnerContentObjID (LPSTR optional), pStreamInfo (CMSG_STREAM_INFO* optional)
r1, _, err := procCryptMsgOpenToEncode.Call(
	uintptr(dwMsgEncodingType),
	uintptr(dwFlags),
	uintptr(dwMsgType),
	uintptr(pvMsgEncodeInfo),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pszInnerContentObjID))),
	uintptr(pStreamInfo),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void*

function CryptMsgOpenToEncode(
  dwMsgEncodingType: DWORD;   // DWORD
  dwFlags: DWORD;   // DWORD
  dwMsgType: DWORD;   // CRYPT_MSG_TYPE
  pvMsgEncodeInfo: Pointer;   // void*
  pszInnerContentObjID: PAnsiChar;   // LPSTR optional
  pStreamInfo: Pointer   // CMSG_STREAM_INFO* optional
): Pointer; stdcall;
  external 'CRYPT32.dll' name 'CryptMsgOpenToEncode';

result := DllCall("CRYPT32\CryptMsgOpenToEncode"
    , "UInt", dwMsgEncodingType   ; DWORD
    , "UInt", dwFlags   ; DWORD
    , "UInt", dwMsgType   ; CRYPT_MSG_TYPE
    , "Ptr", pvMsgEncodeInfo   ; void*
    , "AStr", pszInnerContentObjID   ; LPSTR optional
    , "Ptr", pStreamInfo   ; CMSG_STREAM_INFO* optional
    , "Ptr")   ; return: void*

●CryptMsgOpenToEncode(dwMsgEncodingType, dwFlags, dwMsgType, pvMsgEncodeInfo, pszInnerContentObjID, pStreamInfo) = DLL("CRYPT32.dll", "void* CryptMsgOpenToEncode(dword, dword, dword, void*, char*, void*)")
# 呼び出し: CryptMsgOpenToEncode(dwMsgEncodingType, dwFlags, dwMsgType, pvMsgEncodeInfo, pszInnerContentObjID, pStreamInfo)
# dwMsgEncodingType : DWORD -> "dword"
# dwFlags : DWORD -> "dword"
# dwMsgType : CRYPT_MSG_TYPE -> "dword"
# pvMsgEncodeInfo : void* -> "void*"
# pszInnerContentObjID : LPSTR optional -> "char*"
# pStreamInfo : CMSG_STREAM_INFO* optional -> "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)。