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CryptDecodeMessage

関数

暗号化や署名付きメッセージをデコードして内容を取得する。

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>

BOOL CryptDecodeMessage(
    DWORD dwMsgTypeFlags,
    CRYPT_DECRYPT_MESSAGE_PARA* pDecryptPara,   // optional
    CRYPT_VERIFY_MESSAGE_PARA* pVerifyPara,   // optional
    DWORD dwSignerIndex,
    const BYTE* pbEncodedBlob,
    DWORD cbEncodedBlob,
    DWORD dwPrevInnerContentType,
    DWORD* pdwMsgType,   // optional
    DWORD* pdwInnerContentType,   // optional
    BYTE* pbDecoded,   // optional
    DWORD* pcbDecoded,   // optional
    CERT_CONTEXT** ppXchgCert,   // optional
    CERT_CONTEXT** ppSignerCert   // optional
);

パラメーター

名前	型	方向
dwMsgTypeFlags	DWORD	in
pDecryptPara	CRYPT_DECRYPT_MESSAGE_PARA*	inoptional
pVerifyPara	CRYPT_VERIFY_MESSAGE_PARA*	inoptional
dwSignerIndex	DWORD	in
pbEncodedBlob	BYTE*	in
cbEncodedBlob	DWORD	in
dwPrevInnerContentType	DWORD	in
pdwMsgType	DWORD*	outoptional
pdwInnerContentType	DWORD*	outoptional
pbDecoded	BYTE*	outoptional
pcbDecoded	DWORD*	inoutoptional
ppXchgCert	CERT_CONTEXT**	outoptional
ppSignerCert	CERT_CONTEXT**	outoptional

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL CryptDecodeMessage(
    DWORD dwMsgTypeFlags,
    CRYPT_DECRYPT_MESSAGE_PARA* pDecryptPara,   // optional
    CRYPT_VERIFY_MESSAGE_PARA* pVerifyPara,   // optional
    DWORD dwSignerIndex,
    const BYTE* pbEncodedBlob,
    DWORD cbEncodedBlob,
    DWORD dwPrevInnerContentType,
    DWORD* pdwMsgType,   // optional
    DWORD* pdwInnerContentType,   // optional
    BYTE* pbDecoded,   // optional
    DWORD* pcbDecoded,   // optional
    CERT_CONTEXT** ppXchgCert,   // optional
    CERT_CONTEXT** ppSignerCert   // optional
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("CRYPT32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool CryptDecodeMessage(
    uint dwMsgTypeFlags,   // DWORD
    IntPtr pDecryptPara,   // CRYPT_DECRYPT_MESSAGE_PARA* optional
    IntPtr pVerifyPara,   // CRYPT_VERIFY_MESSAGE_PARA* optional
    uint dwSignerIndex,   // DWORD
    IntPtr pbEncodedBlob,   // BYTE*
    uint cbEncodedBlob,   // DWORD
    uint dwPrevInnerContentType,   // DWORD
    IntPtr pdwMsgType,   // DWORD* optional, out
    IntPtr pdwInnerContentType,   // DWORD* optional, out
    IntPtr pbDecoded,   // BYTE* optional, out
    IntPtr pcbDecoded,   // DWORD* optional, in/out
    IntPtr ppXchgCert,   // CERT_CONTEXT** optional, out
    IntPtr ppSignerCert   // CERT_CONTEXT** optional, out
);

<DllImport("CRYPT32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CryptDecodeMessage(
    dwMsgTypeFlags As UInteger,   ' DWORD
    pDecryptPara As IntPtr,   ' CRYPT_DECRYPT_MESSAGE_PARA* optional
    pVerifyPara As IntPtr,   ' CRYPT_VERIFY_MESSAGE_PARA* optional
    dwSignerIndex As UInteger,   ' DWORD
    pbEncodedBlob As IntPtr,   ' BYTE*
    cbEncodedBlob As UInteger,   ' DWORD
    dwPrevInnerContentType As UInteger,   ' DWORD
    pdwMsgType As IntPtr,   ' DWORD* optional, out
    pdwInnerContentType As IntPtr,   ' DWORD* optional, out
    pbDecoded As IntPtr,   ' BYTE* optional, out
    pcbDecoded As IntPtr,   ' DWORD* optional, in/out
    ppXchgCert As IntPtr,   ' CERT_CONTEXT** optional, out
    ppSignerCert As IntPtr   ' CERT_CONTEXT** optional, out
) As Boolean
End Function

' dwMsgTypeFlags : DWORD
' pDecryptPara : CRYPT_DECRYPT_MESSAGE_PARA* optional
' pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA* optional
' dwSignerIndex : DWORD
' pbEncodedBlob : BYTE*
' cbEncodedBlob : DWORD
' dwPrevInnerContentType : DWORD
' pdwMsgType : DWORD* optional, out
' pdwInnerContentType : DWORD* optional, out
' pbDecoded : BYTE* optional, out
' pcbDecoded : DWORD* optional, in/out
' ppXchgCert : CERT_CONTEXT** optional, out
' ppSignerCert : CERT_CONTEXT** optional, out
Declare PtrSafe Function CryptDecodeMessage Lib "crypt32" ( _
    ByVal dwMsgTypeFlags As Long, _
    ByVal pDecryptPara As LongPtr, _
    ByVal pVerifyPara As LongPtr, _
    ByVal dwSignerIndex As Long, _
    ByVal pbEncodedBlob As LongPtr, _
    ByVal cbEncodedBlob As Long, _
    ByVal dwPrevInnerContentType As Long, _
    ByVal pdwMsgType As LongPtr, _
    ByVal pdwInnerContentType As LongPtr, _
    ByVal pbDecoded As LongPtr, _
    ByVal pcbDecoded As LongPtr, _
    ByVal ppXchgCert As LongPtr, _
    ByVal ppSignerCert 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

CryptDecodeMessage = ctypes.windll.crypt32.CryptDecodeMessage
CryptDecodeMessage.restype = wintypes.BOOL
CryptDecodeMessage.argtypes = [
    wintypes.DWORD,  # dwMsgTypeFlags : DWORD
    ctypes.c_void_p,  # pDecryptPara : CRYPT_DECRYPT_MESSAGE_PARA* optional
    ctypes.c_void_p,  # pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA* optional
    wintypes.DWORD,  # dwSignerIndex : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # pbEncodedBlob : BYTE*
    wintypes.DWORD,  # cbEncodedBlob : DWORD
    wintypes.DWORD,  # dwPrevInnerContentType : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pdwMsgType : DWORD* optional, out
    ctypes.POINTER(wintypes.DWORD),  # pdwInnerContentType : DWORD* optional, out
    ctypes.POINTER(ctypes.c_ubyte),  # pbDecoded : BYTE* optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcbDecoded : DWORD* optional, in/out
    ctypes.c_void_p,  # ppXchgCert : CERT_CONTEXT** optional, out
    ctypes.c_void_p,  # ppSignerCert : CERT_CONTEXT** optional, out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CRYPT32.dll')
CryptDecodeMessage = Fiddle::Function.new(
  lib['CryptDecodeMessage'],
  [
    -Fiddle::TYPE_INT,  # dwMsgTypeFlags : DWORD
    Fiddle::TYPE_VOIDP,  # pDecryptPara : CRYPT_DECRYPT_MESSAGE_PARA* optional
    Fiddle::TYPE_VOIDP,  # pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA* optional
    -Fiddle::TYPE_INT,  # dwSignerIndex : DWORD
    Fiddle::TYPE_VOIDP,  # pbEncodedBlob : BYTE*
    -Fiddle::TYPE_INT,  # cbEncodedBlob : DWORD
    -Fiddle::TYPE_INT,  # dwPrevInnerContentType : DWORD
    Fiddle::TYPE_VOIDP,  # pdwMsgType : DWORD* optional, out
    Fiddle::TYPE_VOIDP,  # pdwInnerContentType : DWORD* optional, out
    Fiddle::TYPE_VOIDP,  # pbDecoded : BYTE* optional, out
    Fiddle::TYPE_VOIDP,  # pcbDecoded : DWORD* optional, in/out
    Fiddle::TYPE_VOIDP,  # ppXchgCert : CERT_CONTEXT** optional, out
    Fiddle::TYPE_VOIDP,  # ppSignerCert : CERT_CONTEXT** optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "crypt32")]
extern "system" {
    fn CryptDecodeMessage(
        dwMsgTypeFlags: u32,  // DWORD
        pDecryptPara: *mut CRYPT_DECRYPT_MESSAGE_PARA,  // CRYPT_DECRYPT_MESSAGE_PARA* optional
        pVerifyPara: *mut CRYPT_VERIFY_MESSAGE_PARA,  // CRYPT_VERIFY_MESSAGE_PARA* optional
        dwSignerIndex: u32,  // DWORD
        pbEncodedBlob: *const u8,  // BYTE*
        cbEncodedBlob: u32,  // DWORD
        dwPrevInnerContentType: u32,  // DWORD
        pdwMsgType: *mut u32,  // DWORD* optional, out
        pdwInnerContentType: *mut u32,  // DWORD* optional, out
        pbDecoded: *mut u8,  // BYTE* optional, out
        pcbDecoded: *mut u32,  // DWORD* optional, in/out
        ppXchgCert: *mut *mut CERT_CONTEXT,  // CERT_CONTEXT** optional, out
        ppSignerCert: *mut *mut CERT_CONTEXT  // CERT_CONTEXT** optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("CRYPT32.dll", SetLastError = true)]
public static extern bool CryptDecodeMessage(uint dwMsgTypeFlags, IntPtr pDecryptPara, IntPtr pVerifyPara, uint dwSignerIndex, IntPtr pbEncodedBlob, uint cbEncodedBlob, uint dwPrevInnerContentType, IntPtr pdwMsgType, IntPtr pdwInnerContentType, IntPtr pbDecoded, IntPtr pcbDecoded, IntPtr ppXchgCert, IntPtr ppSignerCert);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CRYPT32_CryptDecodeMessage' -Namespace Win32 -PassThru
# $api::CryptDecodeMessage(dwMsgTypeFlags, pDecryptPara, pVerifyPara, dwSignerIndex, pbEncodedBlob, cbEncodedBlob, dwPrevInnerContentType, pdwMsgType, pdwInnerContentType, pbDecoded, pcbDecoded, ppXchgCert, ppSignerCert)

#uselib "CRYPT32.dll"
#func global CryptDecodeMessage "CryptDecodeMessage" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; CryptDecodeMessage dwMsgTypeFlags, varptr(pDecryptPara), varptr(pVerifyPara), dwSignerIndex, varptr(pbEncodedBlob), cbEncodedBlob, dwPrevInnerContentType, varptr(pdwMsgType), varptr(pdwInnerContentType), varptr(pbDecoded), varptr(pcbDecoded), varptr(ppXchgCert), varptr(ppSignerCert)   ; 戻り値は stat
; dwMsgTypeFlags : DWORD -> "sptr"
; pDecryptPara : CRYPT_DECRYPT_MESSAGE_PARA* optional -> "sptr"
; pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA* optional -> "sptr"
; dwSignerIndex : DWORD -> "sptr"
; pbEncodedBlob : BYTE* -> "sptr"
; cbEncodedBlob : DWORD -> "sptr"
; dwPrevInnerContentType : DWORD -> "sptr"
; pdwMsgType : DWORD* optional, out -> "sptr"
; pdwInnerContentType : DWORD* optional, out -> "sptr"
; pbDecoded : BYTE* optional, out -> "sptr"
; pcbDecoded : DWORD* optional, in/out -> "sptr"
; ppXchgCert : CERT_CONTEXT** optional, out -> "sptr"
; ppSignerCert : CERT_CONTEXT** optional, out -> "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 CryptDecodeMessage "CryptDecodeMessage" int, var, var, int, var, int, int, var, var, var, var, var, var
; res = CryptDecodeMessage(dwMsgTypeFlags, pDecryptPara, pVerifyPara, dwSignerIndex, pbEncodedBlob, cbEncodedBlob, dwPrevInnerContentType, pdwMsgType, pdwInnerContentType, pbDecoded, pcbDecoded, ppXchgCert, ppSignerCert)
; dwMsgTypeFlags : DWORD -> "int"
; pDecryptPara : CRYPT_DECRYPT_MESSAGE_PARA* optional -> "var"
; pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA* optional -> "var"
; dwSignerIndex : DWORD -> "int"
; pbEncodedBlob : BYTE* -> "var"
; cbEncodedBlob : DWORD -> "int"
; dwPrevInnerContentType : DWORD -> "int"
; pdwMsgType : DWORD* optional, out -> "var"
; pdwInnerContentType : DWORD* optional, out -> "var"
; pbDecoded : BYTE* optional, out -> "var"
; pcbDecoded : DWORD* optional, in/out -> "var"
; ppXchgCert : CERT_CONTEXT** optional, out -> "var"
; ppSignerCert : CERT_CONTEXT** optional, out -> "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 CryptDecodeMessage "CryptDecodeMessage" int, sptr, sptr, int, sptr, int, int, sptr, sptr, sptr, sptr, sptr, sptr
; res = CryptDecodeMessage(dwMsgTypeFlags, varptr(pDecryptPara), varptr(pVerifyPara), dwSignerIndex, varptr(pbEncodedBlob), cbEncodedBlob, dwPrevInnerContentType, varptr(pdwMsgType), varptr(pdwInnerContentType), varptr(pbDecoded), varptr(pcbDecoded), varptr(ppXchgCert), varptr(ppSignerCert))
; dwMsgTypeFlags : DWORD -> "int"
; pDecryptPara : CRYPT_DECRYPT_MESSAGE_PARA* optional -> "sptr"
; pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA* optional -> "sptr"
; dwSignerIndex : DWORD -> "int"
; pbEncodedBlob : BYTE* -> "sptr"
; cbEncodedBlob : DWORD -> "int"
; dwPrevInnerContentType : DWORD -> "int"
; pdwMsgType : DWORD* optional, out -> "sptr"
; pdwInnerContentType : DWORD* optional, out -> "sptr"
; pbDecoded : BYTE* optional, out -> "sptr"
; pcbDecoded : DWORD* optional, in/out -> "sptr"
; ppXchgCert : CERT_CONTEXT** optional, out -> "sptr"
; ppSignerCert : CERT_CONTEXT** optional, out -> "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:

; BOOL CryptDecodeMessage(DWORD dwMsgTypeFlags, CRYPT_DECRYPT_MESSAGE_PARA* pDecryptPara, CRYPT_VERIFY_MESSAGE_PARA* pVerifyPara, DWORD dwSignerIndex, BYTE* pbEncodedBlob, DWORD cbEncodedBlob, DWORD dwPrevInnerContentType, DWORD* pdwMsgType, DWORD* pdwInnerContentType, BYTE* pbDecoded, DWORD* pcbDecoded, CERT_CONTEXT** ppXchgCert, CERT_CONTEXT** ppSignerCert)
#uselib "CRYPT32.dll"
#cfunc global CryptDecodeMessage "CryptDecodeMessage" int, var, var, int, var, int, int, var, var, var, var, var, var
; res = CryptDecodeMessage(dwMsgTypeFlags, pDecryptPara, pVerifyPara, dwSignerIndex, pbEncodedBlob, cbEncodedBlob, dwPrevInnerContentType, pdwMsgType, pdwInnerContentType, pbDecoded, pcbDecoded, ppXchgCert, ppSignerCert)
; dwMsgTypeFlags : DWORD -> "int"
; pDecryptPara : CRYPT_DECRYPT_MESSAGE_PARA* optional -> "var"
; pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA* optional -> "var"
; dwSignerIndex : DWORD -> "int"
; pbEncodedBlob : BYTE* -> "var"
; cbEncodedBlob : DWORD -> "int"
; dwPrevInnerContentType : DWORD -> "int"
; pdwMsgType : DWORD* optional, out -> "var"
; pdwInnerContentType : DWORD* optional, out -> "var"
; pbDecoded : BYTE* optional, out -> "var"
; pcbDecoded : DWORD* optional, in/out -> "var"
; ppXchgCert : CERT_CONTEXT** optional, out -> "var"
; ppSignerCert : CERT_CONTEXT** optional, out -> "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。; BOOL CryptDecodeMessage(DWORD dwMsgTypeFlags, CRYPT_DECRYPT_MESSAGE_PARA* pDecryptPara, CRYPT_VERIFY_MESSAGE_PARA* pVerifyPara, DWORD dwSignerIndex, BYTE* pbEncodedBlob, DWORD cbEncodedBlob, DWORD dwPrevInnerContentType, DWORD* pdwMsgType, DWORD* pdwInnerContentType, BYTE* pbDecoded, DWORD* pcbDecoded, CERT_CONTEXT** ppXchgCert, CERT_CONTEXT** ppSignerCert)
#uselib "CRYPT32.dll"
#cfunc global CryptDecodeMessage "CryptDecodeMessage" int, intptr, intptr, int, intptr, int, int, intptr, intptr, intptr, intptr, intptr, intptr
; res = CryptDecodeMessage(dwMsgTypeFlags, varptr(pDecryptPara), varptr(pVerifyPara), dwSignerIndex, varptr(pbEncodedBlob), cbEncodedBlob, dwPrevInnerContentType, varptr(pdwMsgType), varptr(pdwInnerContentType), varptr(pbDecoded), varptr(pcbDecoded), varptr(ppXchgCert), varptr(ppSignerCert))
; dwMsgTypeFlags : DWORD -> "int"
; pDecryptPara : CRYPT_DECRYPT_MESSAGE_PARA* optional -> "intptr"
; pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA* optional -> "intptr"
; dwSignerIndex : DWORD -> "int"
; pbEncodedBlob : BYTE* -> "intptr"
; cbEncodedBlob : DWORD -> "int"
; dwPrevInnerContentType : DWORD -> "int"
; pdwMsgType : DWORD* optional, out -> "intptr"
; pdwInnerContentType : DWORD* optional, out -> "intptr"
; pbDecoded : BYTE* optional, out -> "intptr"
; pcbDecoded : DWORD* optional, in/out -> "intptr"
; ppXchgCert : CERT_CONTEXT** optional, out -> "intptr"
; ppSignerCert : CERT_CONTEXT** optional, out -> "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")
	procCryptDecodeMessage = crypt32.NewProc("CryptDecodeMessage")
)

// dwMsgTypeFlags (DWORD), pDecryptPara (CRYPT_DECRYPT_MESSAGE_PARA* optional), pVerifyPara (CRYPT_VERIFY_MESSAGE_PARA* optional), dwSignerIndex (DWORD), pbEncodedBlob (BYTE*), cbEncodedBlob (DWORD), dwPrevInnerContentType (DWORD), pdwMsgType (DWORD* optional, out), pdwInnerContentType (DWORD* optional, out), pbDecoded (BYTE* optional, out), pcbDecoded (DWORD* optional, in/out), ppXchgCert (CERT_CONTEXT** optional, out), ppSignerCert (CERT_CONTEXT** optional, out)
r1, _, err := procCryptDecodeMessage.Call(
	uintptr(dwMsgTypeFlags),
	uintptr(pDecryptPara),
	uintptr(pVerifyPara),
	uintptr(dwSignerIndex),
	uintptr(pbEncodedBlob),
	uintptr(cbEncodedBlob),
	uintptr(dwPrevInnerContentType),
	uintptr(pdwMsgType),
	uintptr(pdwInnerContentType),
	uintptr(pbDecoded),
	uintptr(pcbDecoded),
	uintptr(ppXchgCert),
	uintptr(ppSignerCert),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CryptDecodeMessage(
  dwMsgTypeFlags: DWORD;   // DWORD
  pDecryptPara: Pointer;   // CRYPT_DECRYPT_MESSAGE_PARA* optional
  pVerifyPara: Pointer;   // CRYPT_VERIFY_MESSAGE_PARA* optional
  dwSignerIndex: DWORD;   // DWORD
  pbEncodedBlob: Pointer;   // BYTE*
  cbEncodedBlob: DWORD;   // DWORD
  dwPrevInnerContentType: DWORD;   // DWORD
  pdwMsgType: Pointer;   // DWORD* optional, out
  pdwInnerContentType: Pointer;   // DWORD* optional, out
  pbDecoded: Pointer;   // BYTE* optional, out
  pcbDecoded: Pointer;   // DWORD* optional, in/out
  ppXchgCert: Pointer;   // CERT_CONTEXT** optional, out
  ppSignerCert: Pointer   // CERT_CONTEXT** optional, out
): BOOL; stdcall;
  external 'CRYPT32.dll' name 'CryptDecodeMessage';

result := DllCall("CRYPT32\CryptDecodeMessage"
    , "UInt", dwMsgTypeFlags   ; DWORD
    , "Ptr", pDecryptPara   ; CRYPT_DECRYPT_MESSAGE_PARA* optional
    , "Ptr", pVerifyPara   ; CRYPT_VERIFY_MESSAGE_PARA* optional
    , "UInt", dwSignerIndex   ; DWORD
    , "Ptr", pbEncodedBlob   ; BYTE*
    , "UInt", cbEncodedBlob   ; DWORD
    , "UInt", dwPrevInnerContentType   ; DWORD
    , "Ptr", pdwMsgType   ; DWORD* optional, out
    , "Ptr", pdwInnerContentType   ; DWORD* optional, out
    , "Ptr", pbDecoded   ; BYTE* optional, out
    , "Ptr", pcbDecoded   ; DWORD* optional, in/out
    , "Ptr", ppXchgCert   ; CERT_CONTEXT** optional, out
    , "Ptr", ppSignerCert   ; CERT_CONTEXT** optional, out
    , "Int")   ; return: BOOL

●CryptDecodeMessage(dwMsgTypeFlags, pDecryptPara, pVerifyPara, dwSignerIndex, pbEncodedBlob, cbEncodedBlob, dwPrevInnerContentType, pdwMsgType, pdwInnerContentType, pbDecoded, pcbDecoded, ppXchgCert, ppSignerCert) = DLL("CRYPT32.dll", "bool CryptDecodeMessage(dword, void*, void*, dword, void*, dword, dword, void*, void*, void*, void*, void*, void*)")
# 呼び出し: CryptDecodeMessage(dwMsgTypeFlags, pDecryptPara, pVerifyPara, dwSignerIndex, pbEncodedBlob, cbEncodedBlob, dwPrevInnerContentType, pdwMsgType, pdwInnerContentType, pbDecoded, pcbDecoded, ppXchgCert, ppSignerCert)
# dwMsgTypeFlags : DWORD -> "dword"
# pDecryptPara : CRYPT_DECRYPT_MESSAGE_PARA* optional -> "void*"
# pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA* optional -> "void*"
# dwSignerIndex : DWORD -> "dword"
# pbEncodedBlob : BYTE* -> "void*"
# cbEncodedBlob : DWORD -> "dword"
# dwPrevInnerContentType : DWORD -> "dword"
# pdwMsgType : DWORD* optional, out -> "void*"
# pdwInnerContentType : DWORD* optional, out -> "void*"
# pbDecoded : BYTE* optional, out -> "void*"
# pcbDecoded : DWORD* optional, in/out -> "void*"
# ppXchgCert : CERT_CONTEXT** optional, out -> "void*"
# ppSignerCert : CERT_CONTEXT** optional, out -> "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)。