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CryptVerifySignatureA
関数公開鍵を使いハッシュのデジタル署名を検証する(ANSI版)。
シグネチャ
// ADVAPI32.dll (ANSI / -A)
#include <windows.h>
BOOL CryptVerifySignatureA(
UINT_PTR hHash,
const BYTE* pbSignature,
DWORD dwSigLen,
UINT_PTR hPubKey,
LPCSTR szDescription, // optional
DWORD dwFlags
);パラメーター
| 名前 | 型 | 方向 |
|---|---|---|
| hHash | UINT_PTR | in |
| pbSignature | BYTE* | in |
| dwSigLen | DWORD | in |
| hPubKey | UINT_PTR | in |
| szDescription | LPCSTR | inoptional |
| dwFlags | DWORD | in |
戻り値の型: BOOL
各言語での呼び出し定義
// ADVAPI32.dll (ANSI / -A)
#include <windows.h>
BOOL CryptVerifySignatureA(
UINT_PTR hHash,
const BYTE* pbSignature,
DWORD dwSigLen,
UINT_PTR hPubKey,
LPCSTR szDescription, // optional
DWORD dwFlags
);[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
static extern bool CryptVerifySignatureA(
UIntPtr hHash, // UINT_PTR
IntPtr pbSignature, // BYTE*
uint dwSigLen, // DWORD
UIntPtr hPubKey, // UINT_PTR
[MarshalAs(UnmanagedType.LPStr)] string szDescription, // LPCSTR optional
uint dwFlags // DWORD
);<DllImport("ADVAPI32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CryptVerifySignatureA(
hHash As UIntPtr, ' UINT_PTR
pbSignature As IntPtr, ' BYTE*
dwSigLen As UInteger, ' DWORD
hPubKey As UIntPtr, ' UINT_PTR
<MarshalAs(UnmanagedType.LPStr)> szDescription As String, ' LPCSTR optional
dwFlags As UInteger ' DWORD
) As Boolean
End Function' hHash : UINT_PTR
' pbSignature : BYTE*
' dwSigLen : DWORD
' hPubKey : UINT_PTR
' szDescription : LPCSTR optional
' dwFlags : DWORD
Declare PtrSafe Function CryptVerifySignatureA Lib "advapi32" ( _
ByVal hHash As LongPtr, _
ByVal pbSignature As LongPtr, _
ByVal dwSigLen As Long, _
ByVal hPubKey As LongPtr, _
ByVal szDescription As String, _
ByVal dwFlags 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
CryptVerifySignatureA = ctypes.windll.advapi32.CryptVerifySignatureA
CryptVerifySignatureA.restype = wintypes.BOOL
CryptVerifySignatureA.argtypes = [
ctypes.c_size_t, # hHash : UINT_PTR
ctypes.POINTER(ctypes.c_ubyte), # pbSignature : BYTE*
wintypes.DWORD, # dwSigLen : DWORD
ctypes.c_size_t, # hPubKey : UINT_PTR
wintypes.LPCSTR, # szDescription : LPCSTR optional
wintypes.DWORD, # dwFlags : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))require 'fiddle'
require 'fiddle/import'
lib = Fiddle.dlopen('ADVAPI32.dll')
CryptVerifySignatureA = Fiddle::Function.new(
lib['CryptVerifySignatureA'],
[
Fiddle::TYPE_UINTPTR_T, # hHash : UINT_PTR
Fiddle::TYPE_VOIDP, # pbSignature : BYTE*
-Fiddle::TYPE_INT, # dwSigLen : DWORD
Fiddle::TYPE_UINTPTR_T, # hPubKey : UINT_PTR
Fiddle::TYPE_VOIDP, # szDescription : LPCSTR optional
-Fiddle::TYPE_INT, # dwFlags : DWORD
],
Fiddle::TYPE_INT)#[link(name = "advapi32")]
extern "system" {
fn CryptVerifySignatureA(
hHash: usize, // UINT_PTR
pbSignature: *const u8, // BYTE*
dwSigLen: u32, // DWORD
hPubKey: usize, // UINT_PTR
szDescription: *const u8, // LPCSTR optional
dwFlags: u32 // DWORD
) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern bool CryptVerifySignatureA(UIntPtr hHash, IntPtr pbSignature, uint dwSigLen, UIntPtr hPubKey, [MarshalAs(UnmanagedType.LPStr)] string szDescription, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_CryptVerifySignatureA' -Namespace Win32 -PassThru
# $api::CryptVerifySignatureA(hHash, pbSignature, dwSigLen, hPubKey, szDescription, dwFlags)#uselib "ADVAPI32.dll"
#func global CryptVerifySignatureA "CryptVerifySignatureA" sptr, sptr, sptr, sptr, sptr, sptr
; CryptVerifySignatureA hHash, varptr(pbSignature), dwSigLen, hPubKey, szDescription, dwFlags ; 戻り値は stat
; hHash : UINT_PTR -> "sptr"
; pbSignature : BYTE* -> "sptr"
; dwSigLen : DWORD -> "sptr"
; hPubKey : UINT_PTR -> "sptr"
; szDescription : LPCSTR optional -> "sptr"
; dwFlags : 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。出力引数:
#uselib "ADVAPI32.dll" #cfunc global CryptVerifySignatureA "CryptVerifySignatureA" sptr, var, int, sptr, str, int ; res = CryptVerifySignatureA(hHash, pbSignature, dwSigLen, hPubKey, szDescription, dwFlags) ; hHash : UINT_PTR -> "sptr" ; pbSignature : BYTE* -> "var" ; dwSigLen : DWORD -> "int" ; hPubKey : UINT_PTR -> "sptr" ; szDescription : LPCSTR optional -> "str" ; dwFlags : DWORD -> "int" ; ※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 "ADVAPI32.dll" #cfunc global CryptVerifySignatureA "CryptVerifySignatureA" sptr, sptr, int, sptr, str, int ; res = CryptVerifySignatureA(hHash, varptr(pbSignature), dwSigLen, hPubKey, szDescription, dwFlags) ; hHash : UINT_PTR -> "sptr" ; pbSignature : BYTE* -> "sptr" ; dwSigLen : DWORD -> "int" ; hPubKey : UINT_PTR -> "sptr" ; szDescription : LPCSTR optional -> "str" ; dwFlags : DWORD -> "int" ; ※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 CryptVerifySignatureA(UINT_PTR hHash, BYTE* pbSignature, DWORD dwSigLen, UINT_PTR hPubKey, LPCSTR szDescription, DWORD dwFlags) #uselib "ADVAPI32.dll" #cfunc global CryptVerifySignatureA "CryptVerifySignatureA" intptr, var, int, intptr, str, int ; res = CryptVerifySignatureA(hHash, pbSignature, dwSigLen, hPubKey, szDescription, dwFlags) ; hHash : UINT_PTR -> "intptr" ; pbSignature : BYTE* -> "var" ; dwSigLen : DWORD -> "int" ; hPubKey : UINT_PTR -> "intptr" ; szDescription : LPCSTR optional -> "str" ; dwFlags : DWORD -> "int" ; ※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 CryptVerifySignatureA(UINT_PTR hHash, BYTE* pbSignature, DWORD dwSigLen, UINT_PTR hPubKey, LPCSTR szDescription, DWORD dwFlags) #uselib "ADVAPI32.dll" #cfunc global CryptVerifySignatureA "CryptVerifySignatureA" intptr, intptr, int, intptr, str, int ; res = CryptVerifySignatureA(hHash, varptr(pbSignature), dwSigLen, hPubKey, szDescription, dwFlags) ; hHash : UINT_PTR -> "intptr" ; pbSignature : BYTE* -> "intptr" ; dwSigLen : DWORD -> "int" ; hPubKey : UINT_PTR -> "intptr" ; szDescription : LPCSTR optional -> "str" ; dwFlags : DWORD -> "int" ; ※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 (
advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
procCryptVerifySignatureA = advapi32.NewProc("CryptVerifySignatureA")
)
// hHash (UINT_PTR), pbSignature (BYTE*), dwSigLen (DWORD), hPubKey (UINT_PTR), szDescription (LPCSTR optional), dwFlags (DWORD)
r1, _, err := procCryptVerifySignatureA.Call(
uintptr(hHash),
uintptr(pbSignature),
uintptr(dwSigLen),
uintptr(hPubKey),
uintptr(unsafe.Pointer(windows.BytePtrFromString(szDescription))),
uintptr(dwFlags),
)
_ = err // syscall.Errno (valid when the call sets last-error)
_ = r1 // BOOLfunction CryptVerifySignatureA(
hHash: NativeUInt; // UINT_PTR
pbSignature: Pointer; // BYTE*
dwSigLen: DWORD; // DWORD
hPubKey: NativeUInt; // UINT_PTR
szDescription: PAnsiChar; // LPCSTR optional
dwFlags: DWORD // DWORD
): BOOL; stdcall;
external 'ADVAPI32.dll' name 'CryptVerifySignatureA';result := DllCall("ADVAPI32\CryptVerifySignatureA"
, "UPtr", hHash ; UINT_PTR
, "Ptr", pbSignature ; BYTE*
, "UInt", dwSigLen ; DWORD
, "UPtr", hPubKey ; UINT_PTR
, "AStr", szDescription ; LPCSTR optional
, "UInt", dwFlags ; DWORD
, "Int") ; return: BOOL●CryptVerifySignatureA(hHash, pbSignature, dwSigLen, hPubKey, szDescription, dwFlags) = DLL("ADVAPI32.dll", "bool CryptVerifySignatureA(int, void*, dword, int, char*, dword)")
# 呼び出し: CryptVerifySignatureA(hHash, pbSignature, dwSigLen, hPubKey, szDescription, dwFlags)
# hHash : UINT_PTR -> "int"
# pbSignature : BYTE* -> "void*"
# dwSigLen : DWORD -> "dword"
# hPubKey : UINT_PTR -> "int"
# szDescription : LPCSTR optional -> "char*"
# dwFlags : 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)。