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CryptDecodeObject

関数

符号化されたデータを暗号構造体に復号する。

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 CryptDecodeObject(
    CERT_QUERY_ENCODING_TYPE dwCertEncodingType,
    LPCSTR lpszStructType,
    const BYTE* pbEncoded,
    DWORD cbEncoded,
    DWORD dwFlags,
    void* pvStructInfo,   // optional
    DWORD* pcbStructInfo
);

パラメーター

名前	型	方向
dwCertEncodingType	CERT_QUERY_ENCODING_TYPE	in
lpszStructType	LPCSTR	in
pbEncoded	BYTE*	in
cbEncoded	DWORD	in
dwFlags	DWORD	in
pvStructInfo	void*	outoptional
pcbStructInfo	DWORD*	inout

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL CryptDecodeObject(
    CERT_QUERY_ENCODING_TYPE dwCertEncodingType,
    LPCSTR lpszStructType,
    const BYTE* pbEncoded,
    DWORD cbEncoded,
    DWORD dwFlags,
    void* pvStructInfo,   // optional
    DWORD* pcbStructInfo
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("CRYPT32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool CryptDecodeObject(
    uint dwCertEncodingType,   // CERT_QUERY_ENCODING_TYPE
    [MarshalAs(UnmanagedType.LPStr)] string lpszStructType,   // LPCSTR
    IntPtr pbEncoded,   // BYTE*
    uint cbEncoded,   // DWORD
    uint dwFlags,   // DWORD
    IntPtr pvStructInfo,   // void* optional, out
    ref uint pcbStructInfo   // DWORD* in/out
);

<DllImport("CRYPT32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CryptDecodeObject(
    dwCertEncodingType As UInteger,   ' CERT_QUERY_ENCODING_TYPE
    <MarshalAs(UnmanagedType.LPStr)> lpszStructType As String,   ' LPCSTR
    pbEncoded As IntPtr,   ' BYTE*
    cbEncoded As UInteger,   ' DWORD
    dwFlags As UInteger,   ' DWORD
    pvStructInfo As IntPtr,   ' void* optional, out
    ByRef pcbStructInfo As UInteger   ' DWORD* in/out
) As Boolean
End Function

' dwCertEncodingType : CERT_QUERY_ENCODING_TYPE
' lpszStructType : LPCSTR
' pbEncoded : BYTE*
' cbEncoded : DWORD
' dwFlags : DWORD
' pvStructInfo : void* optional, out
' pcbStructInfo : DWORD* in/out
Declare PtrSafe Function CryptDecodeObject Lib "crypt32" ( _
    ByVal dwCertEncodingType As Long, _
    ByVal lpszStructType As String, _
    ByVal pbEncoded As LongPtr, _
    ByVal cbEncoded As Long, _
    ByVal dwFlags As Long, _
    ByVal pvStructInfo As LongPtr, _
    ByRef pcbStructInfo 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

CryptDecodeObject = ctypes.windll.crypt32.CryptDecodeObject
CryptDecodeObject.restype = wintypes.BOOL
CryptDecodeObject.argtypes = [
    wintypes.DWORD,  # dwCertEncodingType : CERT_QUERY_ENCODING_TYPE
    wintypes.LPCSTR,  # lpszStructType : LPCSTR
    ctypes.POINTER(ctypes.c_ubyte),  # pbEncoded : BYTE*
    wintypes.DWORD,  # cbEncoded : DWORD
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.POINTER(None),  # pvStructInfo : void* optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcbStructInfo : DWORD* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CRYPT32.dll')
CryptDecodeObject = Fiddle::Function.new(
  lib['CryptDecodeObject'],
  [
    -Fiddle::TYPE_INT,  # dwCertEncodingType : CERT_QUERY_ENCODING_TYPE
    Fiddle::TYPE_VOIDP,  # lpszStructType : LPCSTR
    Fiddle::TYPE_VOIDP,  # pbEncoded : BYTE*
    -Fiddle::TYPE_INT,  # cbEncoded : DWORD
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # pvStructInfo : void* optional, out
    Fiddle::TYPE_VOIDP,  # pcbStructInfo : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "crypt32")]
extern "system" {
    fn CryptDecodeObject(
        dwCertEncodingType: u32,  // CERT_QUERY_ENCODING_TYPE
        lpszStructType: *const u8,  // LPCSTR
        pbEncoded: *const u8,  // BYTE*
        cbEncoded: u32,  // DWORD
        dwFlags: u32,  // DWORD
        pvStructInfo: *mut (),  // void* optional, out
        pcbStructInfo: *mut u32  // DWORD* in/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 CryptDecodeObject(uint dwCertEncodingType, [MarshalAs(UnmanagedType.LPStr)] string lpszStructType, IntPtr pbEncoded, uint cbEncoded, uint dwFlags, IntPtr pvStructInfo, ref uint pcbStructInfo);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CRYPT32_CryptDecodeObject' -Namespace Win32 -PassThru
# $api::CryptDecodeObject(dwCertEncodingType, lpszStructType, pbEncoded, cbEncoded, dwFlags, pvStructInfo, pcbStructInfo)

#uselib "CRYPT32.dll"
#func global CryptDecodeObject "CryptDecodeObject" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; CryptDecodeObject dwCertEncodingType, lpszStructType, varptr(pbEncoded), cbEncoded, dwFlags, pvStructInfo, varptr(pcbStructInfo)   ; 戻り値は stat
; dwCertEncodingType : CERT_QUERY_ENCODING_TYPE -> "sptr"
; lpszStructType : LPCSTR -> "sptr"
; pbEncoded : BYTE* -> "sptr"
; cbEncoded : DWORD -> "sptr"
; dwFlags : DWORD -> "sptr"
; pvStructInfo : void* optional, out -> "sptr"
; pcbStructInfo : DWORD* in/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 CryptDecodeObject "CryptDecodeObject" int, str, var, int, int, sptr, var
; res = CryptDecodeObject(dwCertEncodingType, lpszStructType, pbEncoded, cbEncoded, dwFlags, pvStructInfo, pcbStructInfo)
; dwCertEncodingType : CERT_QUERY_ENCODING_TYPE -> "int"
; lpszStructType : LPCSTR -> "str"
; pbEncoded : BYTE* -> "var"
; cbEncoded : DWORD -> "int"
; dwFlags : DWORD -> "int"
; pvStructInfo : void* optional, out -> "sptr"
; pcbStructInfo : DWORD* in/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 CryptDecodeObject "CryptDecodeObject" int, str, sptr, int, int, sptr, sptr
; res = CryptDecodeObject(dwCertEncodingType, lpszStructType, varptr(pbEncoded), cbEncoded, dwFlags, pvStructInfo, varptr(pcbStructInfo))
; dwCertEncodingType : CERT_QUERY_ENCODING_TYPE -> "int"
; lpszStructType : LPCSTR -> "str"
; pbEncoded : BYTE* -> "sptr"
; cbEncoded : DWORD -> "int"
; dwFlags : DWORD -> "int"
; pvStructInfo : void* optional, out -> "sptr"
; pcbStructInfo : DWORD* in/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 CryptDecodeObject(CERT_QUERY_ENCODING_TYPE dwCertEncodingType, LPCSTR lpszStructType, BYTE* pbEncoded, DWORD cbEncoded, DWORD dwFlags, void* pvStructInfo, DWORD* pcbStructInfo)
#uselib "CRYPT32.dll"
#cfunc global CryptDecodeObject "CryptDecodeObject" int, str, var, int, int, intptr, var
; res = CryptDecodeObject(dwCertEncodingType, lpszStructType, pbEncoded, cbEncoded, dwFlags, pvStructInfo, pcbStructInfo)
; dwCertEncodingType : CERT_QUERY_ENCODING_TYPE -> "int"
; lpszStructType : LPCSTR -> "str"
; pbEncoded : BYTE* -> "var"
; cbEncoded : DWORD -> "int"
; dwFlags : DWORD -> "int"
; pvStructInfo : void* optional, out -> "intptr"
; pcbStructInfo : DWORD* in/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 CryptDecodeObject(CERT_QUERY_ENCODING_TYPE dwCertEncodingType, LPCSTR lpszStructType, BYTE* pbEncoded, DWORD cbEncoded, DWORD dwFlags, void* pvStructInfo, DWORD* pcbStructInfo)
#uselib "CRYPT32.dll"
#cfunc global CryptDecodeObject "CryptDecodeObject" int, str, intptr, int, int, intptr, intptr
; res = CryptDecodeObject(dwCertEncodingType, lpszStructType, varptr(pbEncoded), cbEncoded, dwFlags, pvStructInfo, varptr(pcbStructInfo))
; dwCertEncodingType : CERT_QUERY_ENCODING_TYPE -> "int"
; lpszStructType : LPCSTR -> "str"
; pbEncoded : BYTE* -> "intptr"
; cbEncoded : DWORD -> "int"
; dwFlags : DWORD -> "int"
; pvStructInfo : void* optional, out -> "intptr"
; pcbStructInfo : DWORD* in/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")
	procCryptDecodeObject = crypt32.NewProc("CryptDecodeObject")
)

// dwCertEncodingType (CERT_QUERY_ENCODING_TYPE), lpszStructType (LPCSTR), pbEncoded (BYTE*), cbEncoded (DWORD), dwFlags (DWORD), pvStructInfo (void* optional, out), pcbStructInfo (DWORD* in/out)
r1, _, err := procCryptDecodeObject.Call(
	uintptr(dwCertEncodingType),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpszStructType))),
	uintptr(pbEncoded),
	uintptr(cbEncoded),
	uintptr(dwFlags),
	uintptr(pvStructInfo),
	uintptr(pcbStructInfo),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CryptDecodeObject(
  dwCertEncodingType: DWORD;   // CERT_QUERY_ENCODING_TYPE
  lpszStructType: PAnsiChar;   // LPCSTR
  pbEncoded: Pointer;   // BYTE*
  cbEncoded: DWORD;   // DWORD
  dwFlags: DWORD;   // DWORD
  pvStructInfo: Pointer;   // void* optional, out
  pcbStructInfo: Pointer   // DWORD* in/out
): BOOL; stdcall;
  external 'CRYPT32.dll' name 'CryptDecodeObject';

result := DllCall("CRYPT32\CryptDecodeObject"
    , "UInt", dwCertEncodingType   ; CERT_QUERY_ENCODING_TYPE
    , "AStr", lpszStructType   ; LPCSTR
    , "Ptr", pbEncoded   ; BYTE*
    , "UInt", cbEncoded   ; DWORD
    , "UInt", dwFlags   ; DWORD
    , "Ptr", pvStructInfo   ; void* optional, out
    , "Ptr", pcbStructInfo   ; DWORD* in/out
    , "Int")   ; return: BOOL

●CryptDecodeObject(dwCertEncodingType, lpszStructType, pbEncoded, cbEncoded, dwFlags, pvStructInfo, pcbStructInfo) = DLL("CRYPT32.dll", "bool CryptDecodeObject(dword, char*, void*, dword, dword, void*, void*)")
# 呼び出し: CryptDecodeObject(dwCertEncodingType, lpszStructType, pbEncoded, cbEncoded, dwFlags, pvStructInfo, pcbStructInfo)
# dwCertEncodingType : CERT_QUERY_ENCODING_TYPE -> "dword"
# lpszStructType : LPCSTR -> "char*"
# pbEncoded : BYTE* -> "void*"
# cbEncoded : DWORD -> "dword"
# dwFlags : DWORD -> "dword"
# pvStructInfo : void* optional, out -> "void*"
# pcbStructInfo : DWORD* in/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)。