SignerTimeStampEx3

// Mssign32.dll
#include <windows.h>

HRESULT SignerTimeStampEx3(
    SIGNER_TIMESTAMP_FLAGS dwFlags,
    DWORD dwIndex,
    SIGNER_SUBJECT_INFO* pSubjectInfo,
    LPCWSTR pwszHttpTimeStamp,
    LPCWSTR pszAlgorithmOid,
    CRYPT_ATTRIBUTES* psRequest,   // optional
    void* pSipData,   // optional
    SIGNER_CONTEXT** ppSignerContext,
    CERT_STRONG_SIGN_PARA* pCryptoPolicy,   // optional
    void* pReserved   // optional
);

<DllImport("Mssign32.dll", ExactSpelling:=True)>
Public Shared Function SignerTimeStampEx3(
    dwFlags As UInteger,   ' SIGNER_TIMESTAMP_FLAGS
    dwIndex As UInteger,   ' DWORD
    pSubjectInfo As IntPtr,   ' SIGNER_SUBJECT_INFO*
    <MarshalAs(UnmanagedType.LPWStr)> pwszHttpTimeStamp As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> pszAlgorithmOid As String,   ' LPCWSTR
    psRequest As IntPtr,   ' CRYPT_ATTRIBUTES* optional
    pSipData As IntPtr,   ' void* optional
    ppSignerContext As IntPtr,   ' SIGNER_CONTEXT** out
    pCryptoPolicy As IntPtr,   ' CERT_STRONG_SIGN_PARA* optional
    pReserved As IntPtr   ' void* optional
) As Integer
End Function

' dwFlags : SIGNER_TIMESTAMP_FLAGS
' dwIndex : DWORD
' pSubjectInfo : SIGNER_SUBJECT_INFO*
' pwszHttpTimeStamp : LPCWSTR
' pszAlgorithmOid : LPCWSTR
' psRequest : CRYPT_ATTRIBUTES* optional
' pSipData : void* optional
' ppSignerContext : SIGNER_CONTEXT** out
' pCryptoPolicy : CERT_STRONG_SIGN_PARA* optional
' pReserved : void* optional
Declare PtrSafe Function SignerTimeStampEx3 Lib "mssign32" ( _
    ByVal dwFlags As Long, _
    ByVal dwIndex As Long, _
    ByVal pSubjectInfo As LongPtr, _
    ByVal pwszHttpTimeStamp As LongPtr, _
    ByVal pszAlgorithmOid As LongPtr, _
    ByVal psRequest As LongPtr, _
    ByVal pSipData As LongPtr, _
    ByVal ppSignerContext As LongPtr, _
    ByVal pCryptoPolicy As LongPtr, _
    ByVal pReserved 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

SignerTimeStampEx3 = ctypes.windll.mssign32.SignerTimeStampEx3
SignerTimeStampEx3.restype = ctypes.c_int
SignerTimeStampEx3.argtypes = [
    wintypes.DWORD,  # dwFlags : SIGNER_TIMESTAMP_FLAGS
    wintypes.DWORD,  # dwIndex : DWORD
    ctypes.c_void_p,  # pSubjectInfo : SIGNER_SUBJECT_INFO*
    wintypes.LPCWSTR,  # pwszHttpTimeStamp : LPCWSTR
    wintypes.LPCWSTR,  # pszAlgorithmOid : LPCWSTR
    ctypes.c_void_p,  # psRequest : CRYPT_ATTRIBUTES* optional
    ctypes.POINTER(None),  # pSipData : void* optional
    ctypes.c_void_p,  # ppSignerContext : SIGNER_CONTEXT** out
    ctypes.c_void_p,  # pCryptoPolicy : CERT_STRONG_SIGN_PARA* optional
    ctypes.POINTER(None),  # pReserved : void* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('Mssign32.dll')
SignerTimeStampEx3 = Fiddle::Function.new(
  lib['SignerTimeStampEx3'],
  [
    -Fiddle::TYPE_INT,  # dwFlags : SIGNER_TIMESTAMP_FLAGS
    -Fiddle::TYPE_INT,  # dwIndex : DWORD
    Fiddle::TYPE_VOIDP,  # pSubjectInfo : SIGNER_SUBJECT_INFO*
    Fiddle::TYPE_VOIDP,  # pwszHttpTimeStamp : LPCWSTR
    Fiddle::TYPE_VOIDP,  # pszAlgorithmOid : LPCWSTR
    Fiddle::TYPE_VOIDP,  # psRequest : CRYPT_ATTRIBUTES* optional
    Fiddle::TYPE_VOIDP,  # pSipData : void* optional
    Fiddle::TYPE_VOIDP,  # ppSignerContext : SIGNER_CONTEXT** out
    Fiddle::TYPE_VOIDP,  # pCryptoPolicy : CERT_STRONG_SIGN_PARA* optional
    Fiddle::TYPE_VOIDP,  # pReserved : void* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "mssign32")]
extern "system" {
    fn SignerTimeStampEx3(
        dwFlags: u32,  // SIGNER_TIMESTAMP_FLAGS
        dwIndex: u32,  // DWORD
        pSubjectInfo: *mut SIGNER_SUBJECT_INFO,  // SIGNER_SUBJECT_INFO*
        pwszHttpTimeStamp: *const u16,  // LPCWSTR
        pszAlgorithmOid: *const u16,  // LPCWSTR
        psRequest: *mut CRYPT_ATTRIBUTES,  // CRYPT_ATTRIBUTES* optional
        pSipData: *mut (),  // void* optional
        ppSignerContext: *mut *mut SIGNER_CONTEXT,  // SIGNER_CONTEXT** out
        pCryptoPolicy: *mut CERT_STRONG_SIGN_PARA,  // CERT_STRONG_SIGN_PARA* optional
        pReserved: *mut ()  // void* optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("Mssign32.dll")]
public static extern int SignerTimeStampEx3(uint dwFlags, uint dwIndex, IntPtr pSubjectInfo, [MarshalAs(UnmanagedType.LPWStr)] string pwszHttpTimeStamp, [MarshalAs(UnmanagedType.LPWStr)] string pszAlgorithmOid, IntPtr psRequest, IntPtr pSipData, IntPtr ppSignerContext, IntPtr pCryptoPolicy, IntPtr pReserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'Mssign32_SignerTimeStampEx3' -Namespace Win32 -PassThru
# $api::SignerTimeStampEx3(dwFlags, dwIndex, pSubjectInfo, pwszHttpTimeStamp, pszAlgorithmOid, psRequest, pSipData, ppSignerContext, pCryptoPolicy, pReserved)

#uselib "Mssign32.dll"
#func global SignerTimeStampEx3 "SignerTimeStampEx3" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; SignerTimeStampEx3 dwFlags, dwIndex, varptr(pSubjectInfo), pwszHttpTimeStamp, pszAlgorithmOid, varptr(psRequest), pSipData, varptr(ppSignerContext), varptr(pCryptoPolicy), pReserved   ; 戻り値は stat
; dwFlags : SIGNER_TIMESTAMP_FLAGS -> "sptr"
; dwIndex : DWORD -> "sptr"
; pSubjectInfo : SIGNER_SUBJECT_INFO* -> "sptr"
; pwszHttpTimeStamp : LPCWSTR -> "sptr"
; pszAlgorithmOid : LPCWSTR -> "sptr"
; psRequest : CRYPT_ATTRIBUTES* optional -> "sptr"
; pSipData : void* optional -> "sptr"
; ppSignerContext : SIGNER_CONTEXT** out -> "sptr"
; pCryptoPolicy : CERT_STRONG_SIGN_PARA* optional -> "sptr"
; pReserved : void* optional -> "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。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	mssign32 = windows.NewLazySystemDLL("Mssign32.dll")
	procSignerTimeStampEx3 = mssign32.NewProc("SignerTimeStampEx3")
)

// dwFlags (SIGNER_TIMESTAMP_FLAGS), dwIndex (DWORD), pSubjectInfo (SIGNER_SUBJECT_INFO*), pwszHttpTimeStamp (LPCWSTR), pszAlgorithmOid (LPCWSTR), psRequest (CRYPT_ATTRIBUTES* optional), pSipData (void* optional), ppSignerContext (SIGNER_CONTEXT** out), pCryptoPolicy (CERT_STRONG_SIGN_PARA* optional), pReserved (void* optional)
r1, _, err := procSignerTimeStampEx3.Call(
	uintptr(dwFlags),
	uintptr(dwIndex),
	uintptr(pSubjectInfo),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwszHttpTimeStamp))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszAlgorithmOid))),
	uintptr(psRequest),
	uintptr(pSipData),
	uintptr(ppSignerContext),
	uintptr(pCryptoPolicy),
	uintptr(pReserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SignerTimeStampEx3(
  dwFlags: DWORD;   // SIGNER_TIMESTAMP_FLAGS
  dwIndex: DWORD;   // DWORD
  pSubjectInfo: Pointer;   // SIGNER_SUBJECT_INFO*
  pwszHttpTimeStamp: PWideChar;   // LPCWSTR
  pszAlgorithmOid: PWideChar;   // LPCWSTR
  psRequest: Pointer;   // CRYPT_ATTRIBUTES* optional
  pSipData: Pointer;   // void* optional
  ppSignerContext: Pointer;   // SIGNER_CONTEXT** out
  pCryptoPolicy: Pointer;   // CERT_STRONG_SIGN_PARA* optional
  pReserved: Pointer   // void* optional
): Integer; stdcall;
  external 'Mssign32.dll' name 'SignerTimeStampEx3';

result := DllCall("Mssign32\SignerTimeStampEx3"
    , "UInt", dwFlags   ; SIGNER_TIMESTAMP_FLAGS
    , "UInt", dwIndex   ; DWORD
    , "Ptr", pSubjectInfo   ; SIGNER_SUBJECT_INFO*
    , "WStr", pwszHttpTimeStamp   ; LPCWSTR
    , "WStr", pszAlgorithmOid   ; LPCWSTR
    , "Ptr", psRequest   ; CRYPT_ATTRIBUTES* optional
    , "Ptr", pSipData   ; void* optional
    , "Ptr", ppSignerContext   ; SIGNER_CONTEXT** out
    , "Ptr", pCryptoPolicy   ; CERT_STRONG_SIGN_PARA* optional
    , "Ptr", pReserved   ; void* optional
    , "Int")   ; return: HRESULT

●SignerTimeStampEx3(dwFlags, dwIndex, pSubjectInfo, pwszHttpTimeStamp, pszAlgorithmOid, psRequest, pSipData, ppSignerContext, pCryptoPolicy, pReserved) = DLL("Mssign32.dll", "int SignerTimeStampEx3(dword, dword, void*, char*, char*, void*, void*, void*, void*, void*)")
# 呼び出し: SignerTimeStampEx3(dwFlags, dwIndex, pSubjectInfo, pwszHttpTimeStamp, pszAlgorithmOid, psRequest, pSipData, ppSignerContext, pCryptoPolicy, pReserved)
# dwFlags : SIGNER_TIMESTAMP_FLAGS -> "dword"
# dwIndex : DWORD -> "dword"
# pSubjectInfo : SIGNER_SUBJECT_INFO* -> "void*"
# pwszHttpTimeStamp : LPCWSTR -> "char*"
# pszAlgorithmOid : LPCWSTR -> "char*"
# psRequest : CRYPT_ATTRIBUTES* optional -> "void*"
# pSipData : void* optional -> "void*"
# ppSignerContext : SIGNER_CONTEXT** out -> "void*"
# pCryptoPolicy : CERT_STRONG_SIGN_PARA* optional -> "void*"
# pReserved : void* optional -> "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)。

const std = @import("std");

extern "mssign32" fn SignerTimeStampEx3(
    dwFlags: u32, // SIGNER_TIMESTAMP_FLAGS
    dwIndex: u32, // DWORD
    pSubjectInfo: [*c]SIGNER_SUBJECT_INFO, // SIGNER_SUBJECT_INFO*
    pwszHttpTimeStamp: [*c]const u16, // LPCWSTR
    pszAlgorithmOid: [*c]const u16, // LPCWSTR
    psRequest: [*c]CRYPT_ATTRIBUTES, // CRYPT_ATTRIBUTES* optional
    pSipData: ?*anyopaque, // void* optional
    ppSignerContext: [*c][*c]SIGNER_CONTEXT, // SIGNER_CONTEXT** out
    pCryptoPolicy: [*c]CERT_STRONG_SIGN_PARA, // CERT_STRONG_SIGN_PARA* optional
    pReserved: ?*anyopaque // void* optional
) callconv(std.os.windows.WINAPI) i32;

proc SignerTimeStampEx3(
    dwFlags: uint32,  # SIGNER_TIMESTAMP_FLAGS
    dwIndex: uint32,  # DWORD
    pSubjectInfo: ptr SIGNER_SUBJECT_INFO,  # SIGNER_SUBJECT_INFO*
    pwszHttpTimeStamp: WideCString,  # LPCWSTR
    pszAlgorithmOid: WideCString,  # LPCWSTR
    psRequest: ptr CRYPT_ATTRIBUTES,  # CRYPT_ATTRIBUTES* optional
    pSipData: pointer,  # void* optional
    ppSignerContext: ptr SIGNER_CONTEXT,  # SIGNER_CONTEXT** out
    pCryptoPolicy: ptr CERT_STRONG_SIGN_PARA,  # CERT_STRONG_SIGN_PARA* optional
    pReserved: pointer  # void* optional
): int32 {.importc: "SignerTimeStampEx3", stdcall, dynlib: "Mssign32.dll".}

pragma(lib, "mssign32");
extern(Windows)
int SignerTimeStampEx3(
    uint dwFlags,   // SIGNER_TIMESTAMP_FLAGS
    uint dwIndex,   // DWORD
    SIGNER_SUBJECT_INFO* pSubjectInfo,   // SIGNER_SUBJECT_INFO*
    const(wchar)* pwszHttpTimeStamp,   // LPCWSTR
    const(wchar)* pszAlgorithmOid,   // LPCWSTR
    CRYPT_ATTRIBUTES* psRequest,   // CRYPT_ATTRIBUTES* optional
    void* pSipData,   // void* optional
    SIGNER_CONTEXT** ppSignerContext,   // SIGNER_CONTEXT** out
    CERT_STRONG_SIGN_PARA* pCryptoPolicy,   // CERT_STRONG_SIGN_PARA* optional
    void* pReserved   // void* optional
);

ccall((:SignerTimeStampEx3, "Mssign32.dll"), stdcall, Int32,
      (UInt32, UInt32, Ptr{SIGNER_SUBJECT_INFO}, Cwstring, Cwstring, Ptr{CRYPT_ATTRIBUTES}, Ptr{Cvoid}, Ptr{SIGNER_CONTEXT}, Ptr{CERT_STRONG_SIGN_PARA}, Ptr{Cvoid}),
      dwFlags, dwIndex, pSubjectInfo, pwszHttpTimeStamp, pszAlgorithmOid, psRequest, pSipData, ppSignerContext, pCryptoPolicy, pReserved)
# dwFlags : SIGNER_TIMESTAMP_FLAGS -> UInt32
# dwIndex : DWORD -> UInt32
# pSubjectInfo : SIGNER_SUBJECT_INFO* -> Ptr{SIGNER_SUBJECT_INFO}
# pwszHttpTimeStamp : LPCWSTR -> Cwstring
# pszAlgorithmOid : LPCWSTR -> Cwstring
# psRequest : CRYPT_ATTRIBUTES* optional -> Ptr{CRYPT_ATTRIBUTES}
# pSipData : void* optional -> Ptr{Cvoid}
# ppSignerContext : SIGNER_CONTEXT** out -> Ptr{SIGNER_CONTEXT}
# pCryptoPolicy : CERT_STRONG_SIGN_PARA* optional -> Ptr{CERT_STRONG_SIGN_PARA}
# pReserved : void* optional -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t SignerTimeStampEx3(
    uint32_t dwFlags,
    uint32_t dwIndex,
    void* pSubjectInfo,
    const uint16_t* pwszHttpTimeStamp,
    const uint16_t* pszAlgorithmOid,
    void* psRequest,
    void* pSipData,
    void* ppSignerContext,
    void* pCryptoPolicy,
    void* pReserved);
]]
local mssign32 = ffi.load("mssign32")
-- mssign32.SignerTimeStampEx3(dwFlags, dwIndex, pSubjectInfo, pwszHttpTimeStamp, pszAlgorithmOid, psRequest, pSipData, ppSignerContext, pCryptoPolicy, pReserved)
-- dwFlags : SIGNER_TIMESTAMP_FLAGS
-- dwIndex : DWORD
-- pSubjectInfo : SIGNER_SUBJECT_INFO*
-- pwszHttpTimeStamp : LPCWSTR
-- pszAlgorithmOid : LPCWSTR
-- psRequest : CRYPT_ATTRIBUTES* optional
-- pSipData : void* optional
-- ppSignerContext : SIGNER_CONTEXT** out
-- pCryptoPolicy : CERT_STRONG_SIGN_PARA* optional
-- pReserved : void* optional
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('Mssign32.dll');
const SignerTimeStampEx3 = lib.func('__stdcall', 'SignerTimeStampEx3', 'int32_t', ['uint32_t', 'uint32_t', 'void *', 'str16', 'str16', 'void *', 'void *', 'void *', 'void *', 'void *']);
// SignerTimeStampEx3(dwFlags, dwIndex, pSubjectInfo, pwszHttpTimeStamp, pszAlgorithmOid, psRequest, pSipData, ppSignerContext, pCryptoPolicy, pReserved)
// dwFlags : SIGNER_TIMESTAMP_FLAGS -> 'uint32_t'
// dwIndex : DWORD -> 'uint32_t'
// pSubjectInfo : SIGNER_SUBJECT_INFO* -> 'void *'
// pwszHttpTimeStamp : LPCWSTR -> 'str16'
// pszAlgorithmOid : LPCWSTR -> 'str16'
// psRequest : CRYPT_ATTRIBUTES* optional -> 'void *'
// pSipData : void* optional -> 'void *'
// ppSignerContext : SIGNER_CONTEXT** out -> 'void *'
// pCryptoPolicy : CERT_STRONG_SIGN_PARA* optional -> 'void *'
// pReserved : void* optional -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("Mssign32.dll", {
  SignerTimeStampEx3: { parameters: ["u32", "u32", "pointer", "buffer", "buffer", "pointer", "pointer", "pointer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.SignerTimeStampEx3(dwFlags, dwIndex, pSubjectInfo, pwszHttpTimeStamp, pszAlgorithmOid, psRequest, pSipData, ppSignerContext, pCryptoPolicy, pReserved)
// dwFlags : SIGNER_TIMESTAMP_FLAGS -> "u32"
// dwIndex : DWORD -> "u32"
// pSubjectInfo : SIGNER_SUBJECT_INFO* -> "pointer"
// pwszHttpTimeStamp : LPCWSTR -> "buffer"
// pszAlgorithmOid : LPCWSTR -> "buffer"
// psRequest : CRYPT_ATTRIBUTES* optional -> "pointer"
// pSipData : void* optional -> "pointer"
// ppSignerContext : SIGNER_CONTEXT** out -> "pointer"
// pCryptoPolicy : CERT_STRONG_SIGN_PARA* optional -> "pointer"
// pReserved : void* optional -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t SignerTimeStampEx3(
    uint32_t dwFlags,
    uint32_t dwIndex,
    void* pSubjectInfo,
    const uint16_t* pwszHttpTimeStamp,
    const uint16_t* pszAlgorithmOid,
    void* psRequest,
    void* pSipData,
    void* ppSignerContext,
    void* pCryptoPolicy,
    void* pReserved);
C, "Mssign32.dll");
// $ffi->SignerTimeStampEx3(dwFlags, dwIndex, pSubjectInfo, pwszHttpTimeStamp, pszAlgorithmOid, psRequest, pSipData, ppSignerContext, pCryptoPolicy, pReserved);
// dwFlags : SIGNER_TIMESTAMP_FLAGS
// dwIndex : DWORD
// pSubjectInfo : SIGNER_SUBJECT_INFO*
// pwszHttpTimeStamp : LPCWSTR
// pszAlgorithmOid : LPCWSTR
// psRequest : CRYPT_ATTRIBUTES* optional
// pSipData : void* optional
// ppSignerContext : SIGNER_CONTEXT** out
// pCryptoPolicy : CERT_STRONG_SIGN_PARA* optional
// pReserved : void* optional
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Mssign32 extends StdCallLibrary {
    Mssign32 INSTANCE = Native.load("mssign32", Mssign32.class);
    int SignerTimeStampEx3(
        int dwFlags,   // SIGNER_TIMESTAMP_FLAGS
        int dwIndex,   // DWORD
        Pointer pSubjectInfo,   // SIGNER_SUBJECT_INFO*
        WString pwszHttpTimeStamp,   // LPCWSTR
        WString pszAlgorithmOid,   // LPCWSTR
        Pointer psRequest,   // CRYPT_ATTRIBUTES* optional
        Pointer pSipData,   // void* optional
        Pointer ppSignerContext,   // SIGNER_CONTEXT** out
        Pointer pCryptoPolicy,   // CERT_STRONG_SIGN_PARA* optional
        Pointer pReserved   // void* optional
    );
}

@[Link("mssign32")]
lib LibMssign32
  fun SignerTimeStampEx3 = SignerTimeStampEx3(
    dwFlags : UInt32,   # SIGNER_TIMESTAMP_FLAGS
    dwIndex : UInt32,   # DWORD
    pSubjectInfo : SIGNER_SUBJECT_INFO*,   # SIGNER_SUBJECT_INFO*
    pwszHttpTimeStamp : UInt16*,   # LPCWSTR
    pszAlgorithmOid : UInt16*,   # LPCWSTR
    psRequest : CRYPT_ATTRIBUTES*,   # CRYPT_ATTRIBUTES* optional
    pSipData : Void*,   # void* optional
    ppSignerContext : SIGNER_CONTEXT**,   # SIGNER_CONTEXT** out
    pCryptoPolicy : CERT_STRONG_SIGN_PARA*,   # CERT_STRONG_SIGN_PARA* optional
    pReserved : Void*   # void* optional
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef SignerTimeStampEx3Native = Int32 Function(Uint32, Uint32, Pointer<Void>, Pointer<Utf16>, Pointer<Utf16>, Pointer<Void>, Pointer<Void>, Pointer<Void>, Pointer<Void>, Pointer<Void>);
typedef SignerTimeStampEx3Dart = int Function(int, int, Pointer<Void>, Pointer<Utf16>, Pointer<Utf16>, Pointer<Void>, Pointer<Void>, Pointer<Void>, Pointer<Void>, Pointer<Void>);
final SignerTimeStampEx3 = DynamicLibrary.open('Mssign32.dll')
    .lookupFunction<SignerTimeStampEx3Native, SignerTimeStampEx3Dart>('SignerTimeStampEx3');
// dwFlags : SIGNER_TIMESTAMP_FLAGS -> Uint32
// dwIndex : DWORD -> Uint32
// pSubjectInfo : SIGNER_SUBJECT_INFO* -> Pointer<Void>
// pwszHttpTimeStamp : LPCWSTR -> Pointer<Utf16>
// pszAlgorithmOid : LPCWSTR -> Pointer<Utf16>
// psRequest : CRYPT_ATTRIBUTES* optional -> Pointer<Void>
// pSipData : void* optional -> Pointer<Void>
// ppSignerContext : SIGNER_CONTEXT** out -> Pointer<Void>
// pCryptoPolicy : CERT_STRONG_SIGN_PARA* optional -> Pointer<Void>
// pReserved : void* optional -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SignerTimeStampEx3(
  dwFlags: DWORD;   // SIGNER_TIMESTAMP_FLAGS
  dwIndex: DWORD;   // DWORD
  pSubjectInfo: Pointer;   // SIGNER_SUBJECT_INFO*
  pwszHttpTimeStamp: PWideChar;   // LPCWSTR
  pszAlgorithmOid: PWideChar;   // LPCWSTR
  psRequest: Pointer;   // CRYPT_ATTRIBUTES* optional
  pSipData: Pointer;   // void* optional
  ppSignerContext: Pointer;   // SIGNER_CONTEXT** out
  pCryptoPolicy: Pointer;   // CERT_STRONG_SIGN_PARA* optional
  pReserved: Pointer   // void* optional
): Integer; stdcall;
  external 'Mssign32.dll' name 'SignerTimeStampEx3';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "SignerTimeStampEx3"
  c_SignerTimeStampEx3 :: Word32 -> Word32 -> Ptr () -> CWString -> CWString -> Ptr () -> Ptr () -> Ptr () -> Ptr () -> Ptr () -> IO Int32
-- dwFlags : SIGNER_TIMESTAMP_FLAGS -> Word32
-- dwIndex : DWORD -> Word32
-- pSubjectInfo : SIGNER_SUBJECT_INFO* -> Ptr ()
-- pwszHttpTimeStamp : LPCWSTR -> CWString
-- pszAlgorithmOid : LPCWSTR -> CWString
-- psRequest : CRYPT_ATTRIBUTES* optional -> Ptr ()
-- pSipData : void* optional -> Ptr ()
-- ppSignerContext : SIGNER_CONTEXT** out -> Ptr ()
-- pCryptoPolicy : CERT_STRONG_SIGN_PARA* optional -> Ptr ()
-- pReserved : void* optional -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let signertimestampex3 =
  foreign "SignerTimeStampEx3"
    (uint32_t @-> uint32_t @-> (ptr void) @-> (ptr uint16_t) @-> (ptr uint16_t) @-> (ptr void) @-> (ptr void) @-> (ptr void) @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* dwFlags : SIGNER_TIMESTAMP_FLAGS -> uint32_t *)
(* dwIndex : DWORD -> uint32_t *)
(* pSubjectInfo : SIGNER_SUBJECT_INFO* -> (ptr void) *)
(* pwszHttpTimeStamp : LPCWSTR -> (ptr uint16_t) *)
(* pszAlgorithmOid : LPCWSTR -> (ptr uint16_t) *)
(* psRequest : CRYPT_ATTRIBUTES* optional -> (ptr void) *)
(* pSipData : void* optional -> (ptr void) *)
(* ppSignerContext : SIGNER_CONTEXT** out -> (ptr void) *)
(* pCryptoPolicy : CERT_STRONG_SIGN_PARA* optional -> (ptr void) *)
(* pReserved : void* optional -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library mssign32 (t "Mssign32.dll"))
(cffi:use-foreign-library mssign32)

(cffi:defcfun ("SignerTimeStampEx3" signer-time-stamp-ex3 :convention :stdcall) :int32
  (dw-flags :uint32)   ; SIGNER_TIMESTAMP_FLAGS
  (dw-index :uint32)   ; DWORD
  (p-subject-info :pointer)   ; SIGNER_SUBJECT_INFO*
  (pwsz-http-time-stamp (:string :encoding :utf-16le))   ; LPCWSTR
  (psz-algorithm-oid (:string :encoding :utf-16le))   ; LPCWSTR
  (ps-request :pointer)   ; CRYPT_ATTRIBUTES* optional
  (p-sip-data :pointer)   ; void* optional
  (pp-signer-context :pointer)   ; SIGNER_CONTEXT** out
  (p-crypto-policy :pointer)   ; CERT_STRONG_SIGN_PARA* optional
  (p-reserved :pointer))   ; void* optional
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SignerTimeStampEx3 = Win32::API::More->new('Mssign32',
    'int SignerTimeStampEx3(DWORD dwFlags, DWORD dwIndex, LPVOID pSubjectInfo, LPCWSTR pwszHttpTimeStamp, LPCWSTR pszAlgorithmOid, LPVOID psRequest, LPVOID pSipData, LPVOID ppSignerContext, LPVOID pCryptoPolicy, LPVOID pReserved)');
# my $ret = $SignerTimeStampEx3->Call($dwFlags, $dwIndex, $pSubjectInfo, $pwszHttpTimeStamp, $pszAlgorithmOid, $psRequest, $pSipData, $ppSignerContext, $pCryptoPolicy, $pReserved);
# dwFlags : SIGNER_TIMESTAMP_FLAGS -> DWORD
# dwIndex : DWORD -> DWORD
# pSubjectInfo : SIGNER_SUBJECT_INFO* -> LPVOID
# pwszHttpTimeStamp : LPCWSTR -> LPCWSTR
# pszAlgorithmOid : LPCWSTR -> LPCWSTR
# psRequest : CRYPT_ATTRIBUTES* optional -> LPVOID
# pSipData : void* optional -> LPVOID
# ppSignerContext : SIGNER_CONTEXT** out -> LPVOID
# pCryptoPolicy : CERT_STRONG_SIGN_PARA* optional -> LPVOID
# pReserved : void* optional -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。