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CryptExportPublicKeyInfoFromBCryptKeyHandle

関数

BCrypt鍵ハンドルから公開鍵情報をエクスポートする。

DLLCRYPT32.dll呼出規約winapi対応OSWindows 7 以降

シグネチャ

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

BOOL CryptExportPublicKeyInfoFromBCryptKeyHandle(
    BCRYPT_KEY_HANDLE hBCryptKey,
    CERT_QUERY_ENCODING_TYPE dwCertEncodingType,
    LPSTR pszPublicKeyObjId,   // optional
    DWORD dwFlags,
    void* pvAuxInfo,   // optional
    CERT_PUBLIC_KEY_INFO* pInfo,   // optional
    DWORD* pcbInfo
);

パラメーター

名前	型	方向
hBCryptKey	BCRYPT_KEY_HANDLE	in
dwCertEncodingType	CERT_QUERY_ENCODING_TYPE	in
pszPublicKeyObjId	LPSTR	inoptional
dwFlags	DWORD	in
pvAuxInfo	void*	inoptional
pInfo	CERT_PUBLIC_KEY_INFO*	outoptional
pcbInfo	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 CryptExportPublicKeyInfoFromBCryptKeyHandle(
    BCRYPT_KEY_HANDLE hBCryptKey,
    CERT_QUERY_ENCODING_TYPE dwCertEncodingType,
    LPSTR pszPublicKeyObjId,   // optional
    DWORD dwFlags,
    void* pvAuxInfo,   // optional
    CERT_PUBLIC_KEY_INFO* pInfo,   // optional
    DWORD* pcbInfo
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("CRYPT32.dll", ExactSpelling = true)]
static extern bool CryptExportPublicKeyInfoFromBCryptKeyHandle(
    IntPtr hBCryptKey,   // BCRYPT_KEY_HANDLE
    uint dwCertEncodingType,   // CERT_QUERY_ENCODING_TYPE
    [MarshalAs(UnmanagedType.LPStr)] string pszPublicKeyObjId,   // LPSTR optional
    uint dwFlags,   // DWORD
    IntPtr pvAuxInfo,   // void* optional
    IntPtr pInfo,   // CERT_PUBLIC_KEY_INFO* optional, out
    ref uint pcbInfo   // DWORD* in/out
);

<DllImport("CRYPT32.dll", ExactSpelling:=True)>
Public Shared Function CryptExportPublicKeyInfoFromBCryptKeyHandle(
    hBCryptKey As IntPtr,   ' BCRYPT_KEY_HANDLE
    dwCertEncodingType As UInteger,   ' CERT_QUERY_ENCODING_TYPE
    <MarshalAs(UnmanagedType.LPStr)> pszPublicKeyObjId As String,   ' LPSTR optional
    dwFlags As UInteger,   ' DWORD
    pvAuxInfo As IntPtr,   ' void* optional
    pInfo As IntPtr,   ' CERT_PUBLIC_KEY_INFO* optional, out
    ByRef pcbInfo As UInteger   ' DWORD* in/out
) As Boolean
End Function

' hBCryptKey : BCRYPT_KEY_HANDLE
' dwCertEncodingType : CERT_QUERY_ENCODING_TYPE
' pszPublicKeyObjId : LPSTR optional
' dwFlags : DWORD
' pvAuxInfo : void* optional
' pInfo : CERT_PUBLIC_KEY_INFO* optional, out
' pcbInfo : DWORD* in/out
Declare PtrSafe Function CryptExportPublicKeyInfoFromBCryptKeyHandle Lib "crypt32" ( _
    ByVal hBCryptKey As LongPtr, _
    ByVal dwCertEncodingType As Long, _
    ByVal pszPublicKeyObjId As String, _
    ByVal dwFlags As Long, _
    ByVal pvAuxInfo As LongPtr, _
    ByVal pInfo As LongPtr, _
    ByRef pcbInfo 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

CryptExportPublicKeyInfoFromBCryptKeyHandle = ctypes.windll.crypt32.CryptExportPublicKeyInfoFromBCryptKeyHandle
CryptExportPublicKeyInfoFromBCryptKeyHandle.restype = wintypes.BOOL
CryptExportPublicKeyInfoFromBCryptKeyHandle.argtypes = [
    wintypes.HANDLE,  # hBCryptKey : BCRYPT_KEY_HANDLE
    wintypes.DWORD,  # dwCertEncodingType : CERT_QUERY_ENCODING_TYPE
    wintypes.LPCSTR,  # pszPublicKeyObjId : LPSTR optional
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.POINTER(None),  # pvAuxInfo : void* optional
    ctypes.c_void_p,  # pInfo : CERT_PUBLIC_KEY_INFO* optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcbInfo : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CRYPT32.dll')
CryptExportPublicKeyInfoFromBCryptKeyHandle = Fiddle::Function.new(
  lib['CryptExportPublicKeyInfoFromBCryptKeyHandle'],
  [
    Fiddle::TYPE_VOIDP,  # hBCryptKey : BCRYPT_KEY_HANDLE
    -Fiddle::TYPE_INT,  # dwCertEncodingType : CERT_QUERY_ENCODING_TYPE
    Fiddle::TYPE_VOIDP,  # pszPublicKeyObjId : LPSTR optional
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # pvAuxInfo : void* optional
    Fiddle::TYPE_VOIDP,  # pInfo : CERT_PUBLIC_KEY_INFO* optional, out
    Fiddle::TYPE_VOIDP,  # pcbInfo : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "crypt32")]
extern "system" {
    fn CryptExportPublicKeyInfoFromBCryptKeyHandle(
        hBCryptKey: *mut core::ffi::c_void,  // BCRYPT_KEY_HANDLE
        dwCertEncodingType: u32,  // CERT_QUERY_ENCODING_TYPE
        pszPublicKeyObjId: *mut u8,  // LPSTR optional
        dwFlags: u32,  // DWORD
        pvAuxInfo: *mut (),  // void* optional
        pInfo: *mut CERT_PUBLIC_KEY_INFO,  // CERT_PUBLIC_KEY_INFO* optional, out
        pcbInfo: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("CRYPT32.dll")]
public static extern bool CryptExportPublicKeyInfoFromBCryptKeyHandle(IntPtr hBCryptKey, uint dwCertEncodingType, [MarshalAs(UnmanagedType.LPStr)] string pszPublicKeyObjId, uint dwFlags, IntPtr pvAuxInfo, IntPtr pInfo, ref uint pcbInfo);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CRYPT32_CryptExportPublicKeyInfoFromBCryptKeyHandle' -Namespace Win32 -PassThru
# $api::CryptExportPublicKeyInfoFromBCryptKeyHandle(hBCryptKey, dwCertEncodingType, pszPublicKeyObjId, dwFlags, pvAuxInfo, pInfo, pcbInfo)

#uselib "CRYPT32.dll"
#func global CryptExportPublicKeyInfoFromBCryptKeyHandle "CryptExportPublicKeyInfoFromBCryptKeyHandle" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; CryptExportPublicKeyInfoFromBCryptKeyHandle hBCryptKey, dwCertEncodingType, pszPublicKeyObjId, dwFlags, pvAuxInfo, varptr(pInfo), varptr(pcbInfo)   ; 戻り値は stat
; hBCryptKey : BCRYPT_KEY_HANDLE -> "sptr"
; dwCertEncodingType : CERT_QUERY_ENCODING_TYPE -> "sptr"
; pszPublicKeyObjId : LPSTR optional -> "sptr"
; dwFlags : DWORD -> "sptr"
; pvAuxInfo : void* optional -> "sptr"
; pInfo : CERT_PUBLIC_KEY_INFO* optional, out -> "sptr"
; pcbInfo : 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 CryptExportPublicKeyInfoFromBCryptKeyHandle "CryptExportPublicKeyInfoFromBCryptKeyHandle" sptr, int, str, int, sptr, var, var
; res = CryptExportPublicKeyInfoFromBCryptKeyHandle(hBCryptKey, dwCertEncodingType, pszPublicKeyObjId, dwFlags, pvAuxInfo, pInfo, pcbInfo)
; hBCryptKey : BCRYPT_KEY_HANDLE -> "sptr"
; dwCertEncodingType : CERT_QUERY_ENCODING_TYPE -> "int"
; pszPublicKeyObjId : LPSTR optional -> "str"
; dwFlags : DWORD -> "int"
; pvAuxInfo : void* optional -> "sptr"
; pInfo : CERT_PUBLIC_KEY_INFO* optional, out -> "var"
; pcbInfo : 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 CryptExportPublicKeyInfoFromBCryptKeyHandle "CryptExportPublicKeyInfoFromBCryptKeyHandle" sptr, int, str, int, sptr, sptr, sptr
; res = CryptExportPublicKeyInfoFromBCryptKeyHandle(hBCryptKey, dwCertEncodingType, pszPublicKeyObjId, dwFlags, pvAuxInfo, varptr(pInfo), varptr(pcbInfo))
; hBCryptKey : BCRYPT_KEY_HANDLE -> "sptr"
; dwCertEncodingType : CERT_QUERY_ENCODING_TYPE -> "int"
; pszPublicKeyObjId : LPSTR optional -> "str"
; dwFlags : DWORD -> "int"
; pvAuxInfo : void* optional -> "sptr"
; pInfo : CERT_PUBLIC_KEY_INFO* optional, out -> "sptr"
; pcbInfo : 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 CryptExportPublicKeyInfoFromBCryptKeyHandle(BCRYPT_KEY_HANDLE hBCryptKey, CERT_QUERY_ENCODING_TYPE dwCertEncodingType, LPSTR pszPublicKeyObjId, DWORD dwFlags, void* pvAuxInfo, CERT_PUBLIC_KEY_INFO* pInfo, DWORD* pcbInfo)
#uselib "CRYPT32.dll"
#cfunc global CryptExportPublicKeyInfoFromBCryptKeyHandle "CryptExportPublicKeyInfoFromBCryptKeyHandle" intptr, int, str, int, intptr, var, var
; res = CryptExportPublicKeyInfoFromBCryptKeyHandle(hBCryptKey, dwCertEncodingType, pszPublicKeyObjId, dwFlags, pvAuxInfo, pInfo, pcbInfo)
; hBCryptKey : BCRYPT_KEY_HANDLE -> "intptr"
; dwCertEncodingType : CERT_QUERY_ENCODING_TYPE -> "int"
; pszPublicKeyObjId : LPSTR optional -> "str"
; dwFlags : DWORD -> "int"
; pvAuxInfo : void* optional -> "intptr"
; pInfo : CERT_PUBLIC_KEY_INFO* optional, out -> "var"
; pcbInfo : 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 CryptExportPublicKeyInfoFromBCryptKeyHandle(BCRYPT_KEY_HANDLE hBCryptKey, CERT_QUERY_ENCODING_TYPE dwCertEncodingType, LPSTR pszPublicKeyObjId, DWORD dwFlags, void* pvAuxInfo, CERT_PUBLIC_KEY_INFO* pInfo, DWORD* pcbInfo)
#uselib "CRYPT32.dll"
#cfunc global CryptExportPublicKeyInfoFromBCryptKeyHandle "CryptExportPublicKeyInfoFromBCryptKeyHandle" intptr, int, str, int, intptr, intptr, intptr
; res = CryptExportPublicKeyInfoFromBCryptKeyHandle(hBCryptKey, dwCertEncodingType, pszPublicKeyObjId, dwFlags, pvAuxInfo, varptr(pInfo), varptr(pcbInfo))
; hBCryptKey : BCRYPT_KEY_HANDLE -> "intptr"
; dwCertEncodingType : CERT_QUERY_ENCODING_TYPE -> "int"
; pszPublicKeyObjId : LPSTR optional -> "str"
; dwFlags : DWORD -> "int"
; pvAuxInfo : void* optional -> "intptr"
; pInfo : CERT_PUBLIC_KEY_INFO* optional, out -> "intptr"
; pcbInfo : 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")
	procCryptExportPublicKeyInfoFromBCryptKeyHandle = crypt32.NewProc("CryptExportPublicKeyInfoFromBCryptKeyHandle")
)

// hBCryptKey (BCRYPT_KEY_HANDLE), dwCertEncodingType (CERT_QUERY_ENCODING_TYPE), pszPublicKeyObjId (LPSTR optional), dwFlags (DWORD), pvAuxInfo (void* optional), pInfo (CERT_PUBLIC_KEY_INFO* optional, out), pcbInfo (DWORD* in/out)
r1, _, err := procCryptExportPublicKeyInfoFromBCryptKeyHandle.Call(
	uintptr(hBCryptKey),
	uintptr(dwCertEncodingType),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pszPublicKeyObjId))),
	uintptr(dwFlags),
	uintptr(pvAuxInfo),
	uintptr(pInfo),
	uintptr(pcbInfo),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CryptExportPublicKeyInfoFromBCryptKeyHandle(
  hBCryptKey: THandle;   // BCRYPT_KEY_HANDLE
  dwCertEncodingType: DWORD;   // CERT_QUERY_ENCODING_TYPE
  pszPublicKeyObjId: PAnsiChar;   // LPSTR optional
  dwFlags: DWORD;   // DWORD
  pvAuxInfo: Pointer;   // void* optional
  pInfo: Pointer;   // CERT_PUBLIC_KEY_INFO* optional, out
  pcbInfo: Pointer   // DWORD* in/out
): BOOL; stdcall;
  external 'CRYPT32.dll' name 'CryptExportPublicKeyInfoFromBCryptKeyHandle';

result := DllCall("CRYPT32\CryptExportPublicKeyInfoFromBCryptKeyHandle"
    , "Ptr", hBCryptKey   ; BCRYPT_KEY_HANDLE
    , "UInt", dwCertEncodingType   ; CERT_QUERY_ENCODING_TYPE
    , "AStr", pszPublicKeyObjId   ; LPSTR optional
    , "UInt", dwFlags   ; DWORD
    , "Ptr", pvAuxInfo   ; void* optional
    , "Ptr", pInfo   ; CERT_PUBLIC_KEY_INFO* optional, out
    , "Ptr", pcbInfo   ; DWORD* in/out
    , "Int")   ; return: BOOL

●CryptExportPublicKeyInfoFromBCryptKeyHandle(hBCryptKey, dwCertEncodingType, pszPublicKeyObjId, dwFlags, pvAuxInfo, pInfo, pcbInfo) = DLL("CRYPT32.dll", "bool CryptExportPublicKeyInfoFromBCryptKeyHandle(void*, dword, char*, dword, void*, void*, void*)")
# 呼び出し: CryptExportPublicKeyInfoFromBCryptKeyHandle(hBCryptKey, dwCertEncodingType, pszPublicKeyObjId, dwFlags, pvAuxInfo, pInfo, pcbInfo)
# hBCryptKey : BCRYPT_KEY_HANDLE -> "void*"
# dwCertEncodingType : CERT_QUERY_ENCODING_TYPE -> "dword"
# pszPublicKeyObjId : LPSTR optional -> "char*"
# dwFlags : DWORD -> "dword"
# pvAuxInfo : void* optional -> "void*"
# pInfo : CERT_PUBLIC_KEY_INFO* optional, out -> "void*"
# pcbInfo : 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)。