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CryptVerifyDetachedMessageSignature

関数

分離署名と元データを用いてメッセージ署名を検証する。

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 CryptVerifyDetachedMessageSignature(
    CRYPT_VERIFY_MESSAGE_PARA* pVerifyPara,
    DWORD dwSignerIndex,
    const BYTE* pbDetachedSignBlob,
    DWORD cbDetachedSignBlob,
    DWORD cToBeSigned,
    const BYTE** rgpbToBeSigned,
    DWORD* rgcbToBeSigned,
    CERT_CONTEXT** ppSignerCert   // optional
);

パラメーター

名前	型	方向
pVerifyPara	CRYPT_VERIFY_MESSAGE_PARA*	in
dwSignerIndex	DWORD	in
pbDetachedSignBlob	BYTE*	in
cbDetachedSignBlob	DWORD	in
cToBeSigned	DWORD	in
rgpbToBeSigned	BYTE**	in
rgcbToBeSigned	DWORD*	in
ppSignerCert	CERT_CONTEXT**	outoptional

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL CryptVerifyDetachedMessageSignature(
    CRYPT_VERIFY_MESSAGE_PARA* pVerifyPara,
    DWORD dwSignerIndex,
    const BYTE* pbDetachedSignBlob,
    DWORD cbDetachedSignBlob,
    DWORD cToBeSigned,
    const BYTE** rgpbToBeSigned,
    DWORD* rgcbToBeSigned,
    CERT_CONTEXT** ppSignerCert   // optional
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("CRYPT32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool CryptVerifyDetachedMessageSignature(
    IntPtr pVerifyPara,   // CRYPT_VERIFY_MESSAGE_PARA*
    uint dwSignerIndex,   // DWORD
    IntPtr pbDetachedSignBlob,   // BYTE*
    uint cbDetachedSignBlob,   // DWORD
    uint cToBeSigned,   // DWORD
    IntPtr rgpbToBeSigned,   // BYTE**
    ref uint rgcbToBeSigned,   // DWORD*
    IntPtr ppSignerCert   // CERT_CONTEXT** optional, out
);

<DllImport("CRYPT32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CryptVerifyDetachedMessageSignature(
    pVerifyPara As IntPtr,   ' CRYPT_VERIFY_MESSAGE_PARA*
    dwSignerIndex As UInteger,   ' DWORD
    pbDetachedSignBlob As IntPtr,   ' BYTE*
    cbDetachedSignBlob As UInteger,   ' DWORD
    cToBeSigned As UInteger,   ' DWORD
    rgpbToBeSigned As IntPtr,   ' BYTE**
    ByRef rgcbToBeSigned As UInteger,   ' DWORD*
    ppSignerCert As IntPtr   ' CERT_CONTEXT** optional, out
) As Boolean
End Function

' pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA*
' dwSignerIndex : DWORD
' pbDetachedSignBlob : BYTE*
' cbDetachedSignBlob : DWORD
' cToBeSigned : DWORD
' rgpbToBeSigned : BYTE**
' rgcbToBeSigned : DWORD*
' ppSignerCert : CERT_CONTEXT** optional, out
Declare PtrSafe Function CryptVerifyDetachedMessageSignature Lib "crypt32" ( _
    ByVal pVerifyPara As LongPtr, _
    ByVal dwSignerIndex As Long, _
    ByVal pbDetachedSignBlob As LongPtr, _
    ByVal cbDetachedSignBlob As Long, _
    ByVal cToBeSigned As Long, _
    ByVal rgpbToBeSigned As LongPtr, _
    ByRef rgcbToBeSigned As Long, _
    ByVal ppSignerCert As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CryptVerifyDetachedMessageSignature = ctypes.windll.crypt32.CryptVerifyDetachedMessageSignature
CryptVerifyDetachedMessageSignature.restype = wintypes.BOOL
CryptVerifyDetachedMessageSignature.argtypes = [
    ctypes.c_void_p,  # pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA*
    wintypes.DWORD,  # dwSignerIndex : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # pbDetachedSignBlob : BYTE*
    wintypes.DWORD,  # cbDetachedSignBlob : DWORD
    wintypes.DWORD,  # cToBeSigned : DWORD
    ctypes.c_void_p,  # rgpbToBeSigned : BYTE**
    ctypes.POINTER(wintypes.DWORD),  # rgcbToBeSigned : DWORD*
    ctypes.c_void_p,  # ppSignerCert : CERT_CONTEXT** optional, out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CRYPT32.dll')
CryptVerifyDetachedMessageSignature = Fiddle::Function.new(
  lib['CryptVerifyDetachedMessageSignature'],
  [
    Fiddle::TYPE_VOIDP,  # pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA*
    -Fiddle::TYPE_INT,  # dwSignerIndex : DWORD
    Fiddle::TYPE_VOIDP,  # pbDetachedSignBlob : BYTE*
    -Fiddle::TYPE_INT,  # cbDetachedSignBlob : DWORD
    -Fiddle::TYPE_INT,  # cToBeSigned : DWORD
    Fiddle::TYPE_VOIDP,  # rgpbToBeSigned : BYTE**
    Fiddle::TYPE_VOIDP,  # rgcbToBeSigned : DWORD*
    Fiddle::TYPE_VOIDP,  # ppSignerCert : CERT_CONTEXT** optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "crypt32")]
extern "system" {
    fn CryptVerifyDetachedMessageSignature(
        pVerifyPara: *mut CRYPT_VERIFY_MESSAGE_PARA,  // CRYPT_VERIFY_MESSAGE_PARA*
        dwSignerIndex: u32,  // DWORD
        pbDetachedSignBlob: *const u8,  // BYTE*
        cbDetachedSignBlob: u32,  // DWORD
        cToBeSigned: u32,  // DWORD
        rgpbToBeSigned: *const *const u8,  // BYTE**
        rgcbToBeSigned: *mut u32,  // DWORD*
        ppSignerCert: *mut *mut CERT_CONTEXT  // CERT_CONTEXT** optional, 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 CryptVerifyDetachedMessageSignature(IntPtr pVerifyPara, uint dwSignerIndex, IntPtr pbDetachedSignBlob, uint cbDetachedSignBlob, uint cToBeSigned, IntPtr rgpbToBeSigned, ref uint rgcbToBeSigned, IntPtr ppSignerCert);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CRYPT32_CryptVerifyDetachedMessageSignature' -Namespace Win32 -PassThru
# $api::CryptVerifyDetachedMessageSignature(pVerifyPara, dwSignerIndex, pbDetachedSignBlob, cbDetachedSignBlob, cToBeSigned, rgpbToBeSigned, rgcbToBeSigned, ppSignerCert)

#uselib "CRYPT32.dll"
#func global CryptVerifyDetachedMessageSignature "CryptVerifyDetachedMessageSignature" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; CryptVerifyDetachedMessageSignature varptr(pVerifyPara), dwSignerIndex, varptr(pbDetachedSignBlob), cbDetachedSignBlob, cToBeSigned, varptr(rgpbToBeSigned), varptr(rgcbToBeSigned), varptr(ppSignerCert)   ; 戻り値は stat
; pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA* -> "sptr"
; dwSignerIndex : DWORD -> "sptr"
; pbDetachedSignBlob : BYTE* -> "sptr"
; cbDetachedSignBlob : DWORD -> "sptr"
; cToBeSigned : DWORD -> "sptr"
; rgpbToBeSigned : BYTE** -> "sptr"
; rgcbToBeSigned : DWORD* -> "sptr"
; ppSignerCert : CERT_CONTEXT** optional, 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 CryptVerifyDetachedMessageSignature "CryptVerifyDetachedMessageSignature" var, int, var, int, int, var, var, var
; res = CryptVerifyDetachedMessageSignature(pVerifyPara, dwSignerIndex, pbDetachedSignBlob, cbDetachedSignBlob, cToBeSigned, rgpbToBeSigned, rgcbToBeSigned, ppSignerCert)
; pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA* -> "var"
; dwSignerIndex : DWORD -> "int"
; pbDetachedSignBlob : BYTE* -> "var"
; cbDetachedSignBlob : DWORD -> "int"
; cToBeSigned : DWORD -> "int"
; rgpbToBeSigned : BYTE** -> "var"
; rgcbToBeSigned : DWORD* -> "var"
; ppSignerCert : CERT_CONTEXT** optional, 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 CryptVerifyDetachedMessageSignature "CryptVerifyDetachedMessageSignature" sptr, int, sptr, int, int, sptr, sptr, sptr
; res = CryptVerifyDetachedMessageSignature(varptr(pVerifyPara), dwSignerIndex, varptr(pbDetachedSignBlob), cbDetachedSignBlob, cToBeSigned, varptr(rgpbToBeSigned), varptr(rgcbToBeSigned), varptr(ppSignerCert))
; pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA* -> "sptr"
; dwSignerIndex : DWORD -> "int"
; pbDetachedSignBlob : BYTE* -> "sptr"
; cbDetachedSignBlob : DWORD -> "int"
; cToBeSigned : DWORD -> "int"
; rgpbToBeSigned : BYTE** -> "sptr"
; rgcbToBeSigned : DWORD* -> "sptr"
; ppSignerCert : CERT_CONTEXT** optional, 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 CryptVerifyDetachedMessageSignature(CRYPT_VERIFY_MESSAGE_PARA* pVerifyPara, DWORD dwSignerIndex, BYTE* pbDetachedSignBlob, DWORD cbDetachedSignBlob, DWORD cToBeSigned, BYTE** rgpbToBeSigned, DWORD* rgcbToBeSigned, CERT_CONTEXT** ppSignerCert)
#uselib "CRYPT32.dll"
#cfunc global CryptVerifyDetachedMessageSignature "CryptVerifyDetachedMessageSignature" var, int, var, int, int, var, var, var
; res = CryptVerifyDetachedMessageSignature(pVerifyPara, dwSignerIndex, pbDetachedSignBlob, cbDetachedSignBlob, cToBeSigned, rgpbToBeSigned, rgcbToBeSigned, ppSignerCert)
; pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA* -> "var"
; dwSignerIndex : DWORD -> "int"
; pbDetachedSignBlob : BYTE* -> "var"
; cbDetachedSignBlob : DWORD -> "int"
; cToBeSigned : DWORD -> "int"
; rgpbToBeSigned : BYTE** -> "var"
; rgcbToBeSigned : DWORD* -> "var"
; ppSignerCert : CERT_CONTEXT** optional, 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 CryptVerifyDetachedMessageSignature(CRYPT_VERIFY_MESSAGE_PARA* pVerifyPara, DWORD dwSignerIndex, BYTE* pbDetachedSignBlob, DWORD cbDetachedSignBlob, DWORD cToBeSigned, BYTE** rgpbToBeSigned, DWORD* rgcbToBeSigned, CERT_CONTEXT** ppSignerCert)
#uselib "CRYPT32.dll"
#cfunc global CryptVerifyDetachedMessageSignature "CryptVerifyDetachedMessageSignature" intptr, int, intptr, int, int, intptr, intptr, intptr
; res = CryptVerifyDetachedMessageSignature(varptr(pVerifyPara), dwSignerIndex, varptr(pbDetachedSignBlob), cbDetachedSignBlob, cToBeSigned, varptr(rgpbToBeSigned), varptr(rgcbToBeSigned), varptr(ppSignerCert))
; pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA* -> "intptr"
; dwSignerIndex : DWORD -> "int"
; pbDetachedSignBlob : BYTE* -> "intptr"
; cbDetachedSignBlob : DWORD -> "int"
; cToBeSigned : DWORD -> "int"
; rgpbToBeSigned : BYTE** -> "intptr"
; rgcbToBeSigned : DWORD* -> "intptr"
; ppSignerCert : CERT_CONTEXT** optional, 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")
	procCryptVerifyDetachedMessageSignature = crypt32.NewProc("CryptVerifyDetachedMessageSignature")
)

// pVerifyPara (CRYPT_VERIFY_MESSAGE_PARA*), dwSignerIndex (DWORD), pbDetachedSignBlob (BYTE*), cbDetachedSignBlob (DWORD), cToBeSigned (DWORD), rgpbToBeSigned (BYTE**), rgcbToBeSigned (DWORD*), ppSignerCert (CERT_CONTEXT** optional, out)
r1, _, err := procCryptVerifyDetachedMessageSignature.Call(
	uintptr(pVerifyPara),
	uintptr(dwSignerIndex),
	uintptr(pbDetachedSignBlob),
	uintptr(cbDetachedSignBlob),
	uintptr(cToBeSigned),
	uintptr(rgpbToBeSigned),
	uintptr(rgcbToBeSigned),
	uintptr(ppSignerCert),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CryptVerifyDetachedMessageSignature(
  pVerifyPara: Pointer;   // CRYPT_VERIFY_MESSAGE_PARA*
  dwSignerIndex: DWORD;   // DWORD
  pbDetachedSignBlob: Pointer;   // BYTE*
  cbDetachedSignBlob: DWORD;   // DWORD
  cToBeSigned: DWORD;   // DWORD
  rgpbToBeSigned: Pointer;   // BYTE**
  rgcbToBeSigned: Pointer;   // DWORD*
  ppSignerCert: Pointer   // CERT_CONTEXT** optional, out
): BOOL; stdcall;
  external 'CRYPT32.dll' name 'CryptVerifyDetachedMessageSignature';

result := DllCall("CRYPT32\CryptVerifyDetachedMessageSignature"
    , "Ptr", pVerifyPara   ; CRYPT_VERIFY_MESSAGE_PARA*
    , "UInt", dwSignerIndex   ; DWORD
    , "Ptr", pbDetachedSignBlob   ; BYTE*
    , "UInt", cbDetachedSignBlob   ; DWORD
    , "UInt", cToBeSigned   ; DWORD
    , "Ptr", rgpbToBeSigned   ; BYTE**
    , "Ptr", rgcbToBeSigned   ; DWORD*
    , "Ptr", ppSignerCert   ; CERT_CONTEXT** optional, out
    , "Int")   ; return: BOOL

●CryptVerifyDetachedMessageSignature(pVerifyPara, dwSignerIndex, pbDetachedSignBlob, cbDetachedSignBlob, cToBeSigned, rgpbToBeSigned, rgcbToBeSigned, ppSignerCert) = DLL("CRYPT32.dll", "bool CryptVerifyDetachedMessageSignature(void*, dword, void*, dword, dword, void*, void*, void*)")
# 呼び出し: CryptVerifyDetachedMessageSignature(pVerifyPara, dwSignerIndex, pbDetachedSignBlob, cbDetachedSignBlob, cToBeSigned, rgpbToBeSigned, rgcbToBeSigned, ppSignerCert)
# pVerifyPara : CRYPT_VERIFY_MESSAGE_PARA* -> "void*"
# dwSignerIndex : DWORD -> "dword"
# pbDetachedSignBlob : BYTE* -> "void*"
# cbDetachedSignBlob : DWORD -> "dword"
# cToBeSigned : DWORD -> "dword"
# rgpbToBeSigned : BYTE** -> "void*"
# rgcbToBeSigned : DWORD* -> "void*"
# ppSignerCert : CERT_CONTEXT** optional, 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)。