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CertAlgIdToOID

関数

アルゴリズム識別子(ALG_ID)をOID文字列に変換する。

DLLCRYPT32.dll呼出規約winapi対応OSWindows XP 以降

シグネチャ

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

LPSTR CertAlgIdToOID(
    DWORD dwAlgId
);

パラメーター

名前	型	方向
dwAlgId	DWORD	in

戻り値の型: LPSTR

各言語での呼び出し定義

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

LPSTR CertAlgIdToOID(
    DWORD dwAlgId
);

[DllImport("CRYPT32.dll", ExactSpelling = true)]
static extern IntPtr CertAlgIdToOID(
    uint dwAlgId   // DWORD
);

<DllImport("CRYPT32.dll", ExactSpelling:=True)>
Public Shared Function CertAlgIdToOID(
    dwAlgId As UInteger   ' DWORD
) As IntPtr
End Function

' dwAlgId : DWORD
Declare PtrSafe Function CertAlgIdToOID Lib "crypt32" ( _
    ByVal dwAlgId 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

CertAlgIdToOID = ctypes.windll.crypt32.CertAlgIdToOID
CertAlgIdToOID.restype = wintypes.LPSTR
CertAlgIdToOID.argtypes = [
    wintypes.DWORD,  # dwAlgId : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CRYPT32.dll')
CertAlgIdToOID = Fiddle::Function.new(
  lib['CertAlgIdToOID'],
  [
    -Fiddle::TYPE_INT,  # dwAlgId : DWORD
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "crypt32")]
extern "system" {
    fn CertAlgIdToOID(
        dwAlgId: u32  // DWORD
    ) -> *mut u8;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("CRYPT32.dll")]
public static extern IntPtr CertAlgIdToOID(uint dwAlgId);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CRYPT32_CertAlgIdToOID' -Namespace Win32 -PassThru
# $api::CertAlgIdToOID(dwAlgId)

#uselib "CRYPT32.dll"
#func global CertAlgIdToOID "CertAlgIdToOID" sptr
; CertAlgIdToOID dwAlgId   ; 戻り値は stat
; dwAlgId : 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。

#uselib "CRYPT32.dll"
#cfunc global CertAlgIdToOID "CertAlgIdToOID" int
; res = CertAlgIdToOID(dwAlgId)
; dwAlgId : DWORD -> "int"

; LPSTR CertAlgIdToOID(DWORD dwAlgId)
#uselib "CRYPT32.dll"
#cfunc global CertAlgIdToOID "CertAlgIdToOID" int
; res = CertAlgIdToOID(dwAlgId)
; dwAlgId : DWORD -> "int"

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

var (
	crypt32 = windows.NewLazySystemDLL("CRYPT32.dll")
	procCertAlgIdToOID = crypt32.NewProc("CertAlgIdToOID")
)

// dwAlgId (DWORD)
r1, _, err := procCertAlgIdToOID.Call(
	uintptr(dwAlgId),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LPSTR

function CertAlgIdToOID(
  dwAlgId: DWORD   // DWORD
): PAnsiChar; stdcall;
  external 'CRYPT32.dll' name 'CertAlgIdToOID';

result := DllCall("CRYPT32\CertAlgIdToOID"
    , "UInt", dwAlgId   ; DWORD
    , "Ptr")   ; return: LPSTR

●CertAlgIdToOID(dwAlgId) = DLL("CRYPT32.dll", "char* CertAlgIdToOID(dword)")
# 呼び出し: CertAlgIdToOID(dwAlgId)
# dwAlgId : 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)。