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CryptRetrieveTimeStamp

関数

タイムスタンプサーバーからタイムスタンプを取得し検証する。

DLLCRYPT32.dll呼出規約winapiSetLastErrorあり対応OSWindows 7 以降

シグネチャ

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

BOOL CryptRetrieveTimeStamp(
    LPCWSTR wszUrl,
    DWORD dwRetrievalFlags,
    DWORD dwTimeout,
    LPCSTR pszHashId,
    const CRYPT_TIMESTAMP_PARA* pPara,   // optional
    const BYTE* pbData,
    DWORD cbData,
    CRYPT_TIMESTAMP_CONTEXT** ppTsContext,
    CERT_CONTEXT** ppTsSigner,
    HCERTSTORE* phStore   // optional
);

パラメーター

名前	型	方向
wszUrl	LPCWSTR	in
dwRetrievalFlags	DWORD	in
dwTimeout	DWORD	in
pszHashId	LPCSTR	in
pPara	CRYPT_TIMESTAMP_PARA*	inoptional
pbData	BYTE*	in
cbData	DWORD	in
ppTsContext	CRYPT_TIMESTAMP_CONTEXT**	out
ppTsSigner	CERT_CONTEXT**	out
phStore	HCERTSTORE*	outoptional

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL CryptRetrieveTimeStamp(
    LPCWSTR wszUrl,
    DWORD dwRetrievalFlags,
    DWORD dwTimeout,
    LPCSTR pszHashId,
    const CRYPT_TIMESTAMP_PARA* pPara,   // optional
    const BYTE* pbData,
    DWORD cbData,
    CRYPT_TIMESTAMP_CONTEXT** ppTsContext,
    CERT_CONTEXT** ppTsSigner,
    HCERTSTORE* phStore   // optional
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("CRYPT32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool CryptRetrieveTimeStamp(
    [MarshalAs(UnmanagedType.LPWStr)] string wszUrl,   // LPCWSTR
    uint dwRetrievalFlags,   // DWORD
    uint dwTimeout,   // DWORD
    [MarshalAs(UnmanagedType.LPStr)] string pszHashId,   // LPCSTR
    IntPtr pPara,   // CRYPT_TIMESTAMP_PARA* optional
    IntPtr pbData,   // BYTE*
    uint cbData,   // DWORD
    IntPtr ppTsContext,   // CRYPT_TIMESTAMP_CONTEXT** out
    IntPtr ppTsSigner,   // CERT_CONTEXT** out
    IntPtr phStore   // HCERTSTORE* optional, out
);

<DllImport("CRYPT32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CryptRetrieveTimeStamp(
    <MarshalAs(UnmanagedType.LPWStr)> wszUrl As String,   ' LPCWSTR
    dwRetrievalFlags As UInteger,   ' DWORD
    dwTimeout As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPStr)> pszHashId As String,   ' LPCSTR
    pPara As IntPtr,   ' CRYPT_TIMESTAMP_PARA* optional
    pbData As IntPtr,   ' BYTE*
    cbData As UInteger,   ' DWORD
    ppTsContext As IntPtr,   ' CRYPT_TIMESTAMP_CONTEXT** out
    ppTsSigner As IntPtr,   ' CERT_CONTEXT** out
    phStore As IntPtr   ' HCERTSTORE* optional, out
) As Boolean
End Function

' wszUrl : LPCWSTR
' dwRetrievalFlags : DWORD
' dwTimeout : DWORD
' pszHashId : LPCSTR
' pPara : CRYPT_TIMESTAMP_PARA* optional
' pbData : BYTE*
' cbData : DWORD
' ppTsContext : CRYPT_TIMESTAMP_CONTEXT** out
' ppTsSigner : CERT_CONTEXT** out
' phStore : HCERTSTORE* optional, out
Declare PtrSafe Function CryptRetrieveTimeStamp Lib "crypt32" ( _
    ByVal wszUrl As LongPtr, _
    ByVal dwRetrievalFlags As Long, _
    ByVal dwTimeout As Long, _
    ByVal pszHashId As String, _
    ByVal pPara As LongPtr, _
    ByVal pbData As LongPtr, _
    ByVal cbData As Long, _
    ByVal ppTsContext As LongPtr, _
    ByVal ppTsSigner As LongPtr, _
    ByVal phStore 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

CryptRetrieveTimeStamp = ctypes.windll.crypt32.CryptRetrieveTimeStamp
CryptRetrieveTimeStamp.restype = wintypes.BOOL
CryptRetrieveTimeStamp.argtypes = [
    wintypes.LPCWSTR,  # wszUrl : LPCWSTR
    wintypes.DWORD,  # dwRetrievalFlags : DWORD
    wintypes.DWORD,  # dwTimeout : DWORD
    wintypes.LPCSTR,  # pszHashId : LPCSTR
    ctypes.c_void_p,  # pPara : CRYPT_TIMESTAMP_PARA* optional
    ctypes.POINTER(ctypes.c_ubyte),  # pbData : BYTE*
    wintypes.DWORD,  # cbData : DWORD
    ctypes.c_void_p,  # ppTsContext : CRYPT_TIMESTAMP_CONTEXT** out
    ctypes.c_void_p,  # ppTsSigner : CERT_CONTEXT** out
    ctypes.c_void_p,  # phStore : HCERTSTORE* optional, out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CRYPT32.dll')
CryptRetrieveTimeStamp = Fiddle::Function.new(
  lib['CryptRetrieveTimeStamp'],
  [
    Fiddle::TYPE_VOIDP,  # wszUrl : LPCWSTR
    -Fiddle::TYPE_INT,  # dwRetrievalFlags : DWORD
    -Fiddle::TYPE_INT,  # dwTimeout : DWORD
    Fiddle::TYPE_VOIDP,  # pszHashId : LPCSTR
    Fiddle::TYPE_VOIDP,  # pPara : CRYPT_TIMESTAMP_PARA* optional
    Fiddle::TYPE_VOIDP,  # pbData : BYTE*
    -Fiddle::TYPE_INT,  # cbData : DWORD
    Fiddle::TYPE_VOIDP,  # ppTsContext : CRYPT_TIMESTAMP_CONTEXT** out
    Fiddle::TYPE_VOIDP,  # ppTsSigner : CERT_CONTEXT** out
    Fiddle::TYPE_VOIDP,  # phStore : HCERTSTORE* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "crypt32")]
extern "system" {
    fn CryptRetrieveTimeStamp(
        wszUrl: *const u16,  // LPCWSTR
        dwRetrievalFlags: u32,  // DWORD
        dwTimeout: u32,  // DWORD
        pszHashId: *const u8,  // LPCSTR
        pPara: *const CRYPT_TIMESTAMP_PARA,  // CRYPT_TIMESTAMP_PARA* optional
        pbData: *const u8,  // BYTE*
        cbData: u32,  // DWORD
        ppTsContext: *mut *mut CRYPT_TIMESTAMP_CONTEXT,  // CRYPT_TIMESTAMP_CONTEXT** out
        ppTsSigner: *mut *mut CERT_CONTEXT,  // CERT_CONTEXT** out
        phStore: *mut *mut core::ffi::c_void  // HCERTSTORE* 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 CryptRetrieveTimeStamp([MarshalAs(UnmanagedType.LPWStr)] string wszUrl, uint dwRetrievalFlags, uint dwTimeout, [MarshalAs(UnmanagedType.LPStr)] string pszHashId, IntPtr pPara, IntPtr pbData, uint cbData, IntPtr ppTsContext, IntPtr ppTsSigner, IntPtr phStore);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CRYPT32_CryptRetrieveTimeStamp' -Namespace Win32 -PassThru
# $api::CryptRetrieveTimeStamp(wszUrl, dwRetrievalFlags, dwTimeout, pszHashId, pPara, pbData, cbData, ppTsContext, ppTsSigner, phStore)

#uselib "CRYPT32.dll"
#func global CryptRetrieveTimeStamp "CryptRetrieveTimeStamp" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; CryptRetrieveTimeStamp wszUrl, dwRetrievalFlags, dwTimeout, pszHashId, varptr(pPara), varptr(pbData), cbData, varptr(ppTsContext), varptr(ppTsSigner), phStore   ; 戻り値は stat
; wszUrl : LPCWSTR -> "sptr"
; dwRetrievalFlags : DWORD -> "sptr"
; dwTimeout : DWORD -> "sptr"
; pszHashId : LPCSTR -> "sptr"
; pPara : CRYPT_TIMESTAMP_PARA* optional -> "sptr"
; pbData : BYTE* -> "sptr"
; cbData : DWORD -> "sptr"
; ppTsContext : CRYPT_TIMESTAMP_CONTEXT** out -> "sptr"
; ppTsSigner : CERT_CONTEXT** out -> "sptr"
; phStore : HCERTSTORE* 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 CryptRetrieveTimeStamp "CryptRetrieveTimeStamp" wstr, int, int, str, var, var, int, var, var, sptr
; res = CryptRetrieveTimeStamp(wszUrl, dwRetrievalFlags, dwTimeout, pszHashId, pPara, pbData, cbData, ppTsContext, ppTsSigner, phStore)
; wszUrl : LPCWSTR -> "wstr"
; dwRetrievalFlags : DWORD -> "int"
; dwTimeout : DWORD -> "int"
; pszHashId : LPCSTR -> "str"
; pPara : CRYPT_TIMESTAMP_PARA* optional -> "var"
; pbData : BYTE* -> "var"
; cbData : DWORD -> "int"
; ppTsContext : CRYPT_TIMESTAMP_CONTEXT** out -> "var"
; ppTsSigner : CERT_CONTEXT** out -> "var"
; phStore : HCERTSTORE* optional, out -> "sptr"
; ※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 CryptRetrieveTimeStamp "CryptRetrieveTimeStamp" wstr, int, int, str, sptr, sptr, int, sptr, sptr, sptr
; res = CryptRetrieveTimeStamp(wszUrl, dwRetrievalFlags, dwTimeout, pszHashId, varptr(pPara), varptr(pbData), cbData, varptr(ppTsContext), varptr(ppTsSigner), phStore)
; wszUrl : LPCWSTR -> "wstr"
; dwRetrievalFlags : DWORD -> "int"
; dwTimeout : DWORD -> "int"
; pszHashId : LPCSTR -> "str"
; pPara : CRYPT_TIMESTAMP_PARA* optional -> "sptr"
; pbData : BYTE* -> "sptr"
; cbData : DWORD -> "int"
; ppTsContext : CRYPT_TIMESTAMP_CONTEXT** out -> "sptr"
; ppTsSigner : CERT_CONTEXT** out -> "sptr"
; phStore : HCERTSTORE* 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 CryptRetrieveTimeStamp(LPCWSTR wszUrl, DWORD dwRetrievalFlags, DWORD dwTimeout, LPCSTR pszHashId, CRYPT_TIMESTAMP_PARA* pPara, BYTE* pbData, DWORD cbData, CRYPT_TIMESTAMP_CONTEXT** ppTsContext, CERT_CONTEXT** ppTsSigner, HCERTSTORE* phStore)
#uselib "CRYPT32.dll"
#cfunc global CryptRetrieveTimeStamp "CryptRetrieveTimeStamp" wstr, int, int, str, var, var, int, var, var, intptr
; res = CryptRetrieveTimeStamp(wszUrl, dwRetrievalFlags, dwTimeout, pszHashId, pPara, pbData, cbData, ppTsContext, ppTsSigner, phStore)
; wszUrl : LPCWSTR -> "wstr"
; dwRetrievalFlags : DWORD -> "int"
; dwTimeout : DWORD -> "int"
; pszHashId : LPCSTR -> "str"
; pPara : CRYPT_TIMESTAMP_PARA* optional -> "var"
; pbData : BYTE* -> "var"
; cbData : DWORD -> "int"
; ppTsContext : CRYPT_TIMESTAMP_CONTEXT** out -> "var"
; ppTsSigner : CERT_CONTEXT** out -> "var"
; phStore : HCERTSTORE* optional, out -> "intptr"
; ※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 CryptRetrieveTimeStamp(LPCWSTR wszUrl, DWORD dwRetrievalFlags, DWORD dwTimeout, LPCSTR pszHashId, CRYPT_TIMESTAMP_PARA* pPara, BYTE* pbData, DWORD cbData, CRYPT_TIMESTAMP_CONTEXT** ppTsContext, CERT_CONTEXT** ppTsSigner, HCERTSTORE* phStore)
#uselib "CRYPT32.dll"
#cfunc global CryptRetrieveTimeStamp "CryptRetrieveTimeStamp" wstr, int, int, str, intptr, intptr, int, intptr, intptr, intptr
; res = CryptRetrieveTimeStamp(wszUrl, dwRetrievalFlags, dwTimeout, pszHashId, varptr(pPara), varptr(pbData), cbData, varptr(ppTsContext), varptr(ppTsSigner), phStore)
; wszUrl : LPCWSTR -> "wstr"
; dwRetrievalFlags : DWORD -> "int"
; dwTimeout : DWORD -> "int"
; pszHashId : LPCSTR -> "str"
; pPara : CRYPT_TIMESTAMP_PARA* optional -> "intptr"
; pbData : BYTE* -> "intptr"
; cbData : DWORD -> "int"
; ppTsContext : CRYPT_TIMESTAMP_CONTEXT** out -> "intptr"
; ppTsSigner : CERT_CONTEXT** out -> "intptr"
; phStore : HCERTSTORE* 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")
	procCryptRetrieveTimeStamp = crypt32.NewProc("CryptRetrieveTimeStamp")
)

// wszUrl (LPCWSTR), dwRetrievalFlags (DWORD), dwTimeout (DWORD), pszHashId (LPCSTR), pPara (CRYPT_TIMESTAMP_PARA* optional), pbData (BYTE*), cbData (DWORD), ppTsContext (CRYPT_TIMESTAMP_CONTEXT** out), ppTsSigner (CERT_CONTEXT** out), phStore (HCERTSTORE* optional, out)
r1, _, err := procCryptRetrieveTimeStamp.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(wszUrl))),
	uintptr(dwRetrievalFlags),
	uintptr(dwTimeout),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pszHashId))),
	uintptr(pPara),
	uintptr(pbData),
	uintptr(cbData),
	uintptr(ppTsContext),
	uintptr(ppTsSigner),
	uintptr(phStore),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CryptRetrieveTimeStamp(
  wszUrl: PWideChar;   // LPCWSTR
  dwRetrievalFlags: DWORD;   // DWORD
  dwTimeout: DWORD;   // DWORD
  pszHashId: PAnsiChar;   // LPCSTR
  pPara: Pointer;   // CRYPT_TIMESTAMP_PARA* optional
  pbData: Pointer;   // BYTE*
  cbData: DWORD;   // DWORD
  ppTsContext: Pointer;   // CRYPT_TIMESTAMP_CONTEXT** out
  ppTsSigner: Pointer;   // CERT_CONTEXT** out
  phStore: Pointer   // HCERTSTORE* optional, out
): BOOL; stdcall;
  external 'CRYPT32.dll' name 'CryptRetrieveTimeStamp';

result := DllCall("CRYPT32\CryptRetrieveTimeStamp"
    , "WStr", wszUrl   ; LPCWSTR
    , "UInt", dwRetrievalFlags   ; DWORD
    , "UInt", dwTimeout   ; DWORD
    , "AStr", pszHashId   ; LPCSTR
    , "Ptr", pPara   ; CRYPT_TIMESTAMP_PARA* optional
    , "Ptr", pbData   ; BYTE*
    , "UInt", cbData   ; DWORD
    , "Ptr", ppTsContext   ; CRYPT_TIMESTAMP_CONTEXT** out
    , "Ptr", ppTsSigner   ; CERT_CONTEXT** out
    , "Ptr", phStore   ; HCERTSTORE* optional, out
    , "Int")   ; return: BOOL

●CryptRetrieveTimeStamp(wszUrl, dwRetrievalFlags, dwTimeout, pszHashId, pPara, pbData, cbData, ppTsContext, ppTsSigner, phStore) = DLL("CRYPT32.dll", "bool CryptRetrieveTimeStamp(char*, dword, dword, char*, void*, void*, dword, void*, void*, void*)")
# 呼び出し: CryptRetrieveTimeStamp(wszUrl, dwRetrievalFlags, dwTimeout, pszHashId, pPara, pbData, cbData, ppTsContext, ppTsSigner, phStore)
# wszUrl : LPCWSTR -> "char*"
# dwRetrievalFlags : DWORD -> "dword"
# dwTimeout : DWORD -> "dword"
# pszHashId : LPCSTR -> "char*"
# pPara : CRYPT_TIMESTAMP_PARA* optional -> "void*"
# pbData : BYTE* -> "void*"
# cbData : DWORD -> "dword"
# ppTsContext : CRYPT_TIMESTAMP_CONTEXT** out -> "void*"
# ppTsSigner : CERT_CONTEXT** out -> "void*"
# phStore : HCERTSTORE* 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)。