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ホームSecurity.Cryptography › NCryptVerifySignature

NCryptVerifySignature

関数
ハッシュ値に対する署名をキーで検証する。
DLLncrypt.dll呼出規約winapi対応OSWindows Vista 以降

シグネチャ

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

HRESULT NCryptVerifySignature(
    NCRYPT_KEY_HANDLE hKey,
    void* pPaddingInfo,   // optional
    BYTE* pbHashValue,
    DWORD cbHashValue,
    BYTE* pbSignature,
    DWORD cbSignature,
    NCRYPT_FLAGS dwFlags
);

パラメーター

名前方向
hKeyNCRYPT_KEY_HANDLEin
pPaddingInfovoid*inoptional
pbHashValueBYTE*in
cbHashValueDWORDin
pbSignatureBYTE*in
cbSignatureDWORDin
dwFlagsNCRYPT_FLAGSin

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT NCryptVerifySignature(
    NCRYPT_KEY_HANDLE hKey,
    void* pPaddingInfo,   // optional
    BYTE* pbHashValue,
    DWORD cbHashValue,
    BYTE* pbSignature,
    DWORD cbSignature,
    NCRYPT_FLAGS dwFlags
);
[DllImport("ncrypt.dll", ExactSpelling = true)]
static extern int NCryptVerifySignature(
    UIntPtr hKey,   // NCRYPT_KEY_HANDLE
    IntPtr pPaddingInfo,   // void* optional
    IntPtr pbHashValue,   // BYTE*
    uint cbHashValue,   // DWORD
    IntPtr pbSignature,   // BYTE*
    uint cbSignature,   // DWORD
    uint dwFlags   // NCRYPT_FLAGS
);
<DllImport("ncrypt.dll", ExactSpelling:=True)>
Public Shared Function NCryptVerifySignature(
    hKey As UIntPtr,   ' NCRYPT_KEY_HANDLE
    pPaddingInfo As IntPtr,   ' void* optional
    pbHashValue As IntPtr,   ' BYTE*
    cbHashValue As UInteger,   ' DWORD
    pbSignature As IntPtr,   ' BYTE*
    cbSignature As UInteger,   ' DWORD
    dwFlags As UInteger   ' NCRYPT_FLAGS
) As Integer
End Function
' hKey : NCRYPT_KEY_HANDLE
' pPaddingInfo : void* optional
' pbHashValue : BYTE*
' cbHashValue : DWORD
' pbSignature : BYTE*
' cbSignature : DWORD
' dwFlags : NCRYPT_FLAGS
Declare PtrSafe Function NCryptVerifySignature Lib "ncrypt" ( _
    ByVal hKey As LongPtr, _
    ByVal pPaddingInfo As LongPtr, _
    ByVal pbHashValue As LongPtr, _
    ByVal cbHashValue As Long, _
    ByVal pbSignature As LongPtr, _
    ByVal cbSignature As Long, _
    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

NCryptVerifySignature = ctypes.windll.ncrypt.NCryptVerifySignature
NCryptVerifySignature.restype = ctypes.c_int
NCryptVerifySignature.argtypes = [
    ctypes.c_size_t,  # hKey : NCRYPT_KEY_HANDLE
    ctypes.POINTER(None),  # pPaddingInfo : void* optional
    ctypes.POINTER(ctypes.c_ubyte),  # pbHashValue : BYTE*
    wintypes.DWORD,  # cbHashValue : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # pbSignature : BYTE*
    wintypes.DWORD,  # cbSignature : DWORD
    wintypes.DWORD,  # dwFlags : NCRYPT_FLAGS
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ncrypt.dll')
NCryptVerifySignature = Fiddle::Function.new(
  lib['NCryptVerifySignature'],
  [
    Fiddle::TYPE_UINTPTR_T,  # hKey : NCRYPT_KEY_HANDLE
    Fiddle::TYPE_VOIDP,  # pPaddingInfo : void* optional
    Fiddle::TYPE_VOIDP,  # pbHashValue : BYTE*
    -Fiddle::TYPE_INT,  # cbHashValue : DWORD
    Fiddle::TYPE_VOIDP,  # pbSignature : BYTE*
    -Fiddle::TYPE_INT,  # cbSignature : DWORD
    -Fiddle::TYPE_INT,  # dwFlags : NCRYPT_FLAGS
  ],
  Fiddle::TYPE_INT)
#[link(name = "ncrypt")]
extern "system" {
    fn NCryptVerifySignature(
        hKey: usize,  // NCRYPT_KEY_HANDLE
        pPaddingInfo: *mut (),  // void* optional
        pbHashValue: *mut u8,  // BYTE*
        cbHashValue: u32,  // DWORD
        pbSignature: *mut u8,  // BYTE*
        cbSignature: u32,  // DWORD
        dwFlags: u32  // NCRYPT_FLAGS
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("ncrypt.dll")]
public static extern int NCryptVerifySignature(UIntPtr hKey, IntPtr pPaddingInfo, IntPtr pbHashValue, uint cbHashValue, IntPtr pbSignature, uint cbSignature, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ncrypt_NCryptVerifySignature' -Namespace Win32 -PassThru
# $api::NCryptVerifySignature(hKey, pPaddingInfo, pbHashValue, cbHashValue, pbSignature, cbSignature, dwFlags)
#uselib "ncrypt.dll"
#func global NCryptVerifySignature "NCryptVerifySignature" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; NCryptVerifySignature hKey, pPaddingInfo, varptr(pbHashValue), cbHashValue, varptr(pbSignature), cbSignature, dwFlags   ; 戻り値は stat
; hKey : NCRYPT_KEY_HANDLE -> "sptr"
; pPaddingInfo : void* optional -> "sptr"
; pbHashValue : BYTE* -> "sptr"
; cbHashValue : DWORD -> "sptr"
; pbSignature : BYTE* -> "sptr"
; cbSignature : DWORD -> "sptr"
; dwFlags : NCRYPT_FLAGS -> "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 "ncrypt.dll"
#cfunc global NCryptVerifySignature "NCryptVerifySignature" sptr, sptr, var, int, var, int, int
; res = NCryptVerifySignature(hKey, pPaddingInfo, pbHashValue, cbHashValue, pbSignature, cbSignature, dwFlags)
; hKey : NCRYPT_KEY_HANDLE -> "sptr"
; pPaddingInfo : void* optional -> "sptr"
; pbHashValue : BYTE* -> "var"
; cbHashValue : DWORD -> "int"
; pbSignature : BYTE* -> "var"
; cbSignature : DWORD -> "int"
; dwFlags : NCRYPT_FLAGS -> "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。
出力引数:
; HRESULT NCryptVerifySignature(NCRYPT_KEY_HANDLE hKey, void* pPaddingInfo, BYTE* pbHashValue, DWORD cbHashValue, BYTE* pbSignature, DWORD cbSignature, NCRYPT_FLAGS dwFlags)
#uselib "ncrypt.dll"
#cfunc global NCryptVerifySignature "NCryptVerifySignature" intptr, intptr, var, int, var, int, int
; res = NCryptVerifySignature(hKey, pPaddingInfo, pbHashValue, cbHashValue, pbSignature, cbSignature, dwFlags)
; hKey : NCRYPT_KEY_HANDLE -> "intptr"
; pPaddingInfo : void* optional -> "intptr"
; pbHashValue : BYTE* -> "var"
; cbHashValue : DWORD -> "int"
; pbSignature : BYTE* -> "var"
; cbSignature : DWORD -> "int"
; dwFlags : NCRYPT_FLAGS -> "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。
import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	ncrypt = windows.NewLazySystemDLL("ncrypt.dll")
	procNCryptVerifySignature = ncrypt.NewProc("NCryptVerifySignature")
)

// hKey (NCRYPT_KEY_HANDLE), pPaddingInfo (void* optional), pbHashValue (BYTE*), cbHashValue (DWORD), pbSignature (BYTE*), cbSignature (DWORD), dwFlags (NCRYPT_FLAGS)
r1, _, err := procNCryptVerifySignature.Call(
	uintptr(hKey),
	uintptr(pPaddingInfo),
	uintptr(pbHashValue),
	uintptr(cbHashValue),
	uintptr(pbSignature),
	uintptr(cbSignature),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT
function NCryptVerifySignature(
  hKey: NativeUInt;   // NCRYPT_KEY_HANDLE
  pPaddingInfo: Pointer;   // void* optional
  pbHashValue: Pointer;   // BYTE*
  cbHashValue: DWORD;   // DWORD
  pbSignature: Pointer;   // BYTE*
  cbSignature: DWORD;   // DWORD
  dwFlags: DWORD   // NCRYPT_FLAGS
): Integer; stdcall;
  external 'ncrypt.dll' name 'NCryptVerifySignature';
result := DllCall("ncrypt\NCryptVerifySignature"
    , "UPtr", hKey   ; NCRYPT_KEY_HANDLE
    , "Ptr", pPaddingInfo   ; void* optional
    , "Ptr", pbHashValue   ; BYTE*
    , "UInt", cbHashValue   ; DWORD
    , "Ptr", pbSignature   ; BYTE*
    , "UInt", cbSignature   ; DWORD
    , "UInt", dwFlags   ; NCRYPT_FLAGS
    , "Int")   ; return: HRESULT
●NCryptVerifySignature(hKey, pPaddingInfo, pbHashValue, cbHashValue, pbSignature, cbSignature, dwFlags) = DLL("ncrypt.dll", "int NCryptVerifySignature(int, void*, void*, dword, void*, dword, dword)")
# 呼び出し: NCryptVerifySignature(hKey, pPaddingInfo, pbHashValue, cbHashValue, pbSignature, cbSignature, dwFlags)
# hKey : NCRYPT_KEY_HANDLE -> "int"
# pPaddingInfo : void* optional -> "void*"
# pbHashValue : BYTE* -> "void*"
# cbHashValue : DWORD -> "dword"
# pbSignature : BYTE* -> "void*"
# cbSignature : DWORD -> "dword"
# dwFlags : NCRYPT_FLAGS -> "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)。