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SslCreateEphemeralKey

関数

SSL用の一時鍵を生成する。

DLLncrypt.dll呼出規約winapi

シグネチャ

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

HRESULT SslCreateEphemeralKey(
    NCRYPT_PROV_HANDLE hSslProvider,
    NCRYPT_KEY_HANDLE* phEphemeralKey,
    DWORD dwProtocol,
    DWORD dwCipherSuite,
    DWORD dwKeyType,
    DWORD dwKeyBitLen,
    BYTE* pbParams,   // optional
    DWORD cbParams,
    DWORD dwFlags
);

パラメーター

名前	型	方向	説明
hSslProvider	NCRYPT_PROV_HANDLE	in	Schannel SSLプロバイダのハンドル。
phEphemeralKey	NCRYPT_KEY_HANDLE*	out	生成された一時鍵のハンドルを受け取る出力先。
dwProtocol	DWORD	in	対象のSSL/TLSプロトコルバージョンを示す値。
dwCipherSuite	DWORD	in	対象の暗号スイートを示す値。
dwKeyType	DWORD	in	生成する鍵の種類を示す値。
dwKeyBitLen	DWORD	in	生成する鍵のビット長。
pbParams	BYTE*	inoptional	鍵生成パラメータデータへのポインタ。NULL可。
cbParams	DWORD	in	pbParamsのバイト数。
dwFlags	DWORD	in	動作を制御するフラグ。

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT SslCreateEphemeralKey(
    NCRYPT_PROV_HANDLE hSslProvider,
    NCRYPT_KEY_HANDLE* phEphemeralKey,
    DWORD dwProtocol,
    DWORD dwCipherSuite,
    DWORD dwKeyType,
    DWORD dwKeyBitLen,
    BYTE* pbParams,   // optional
    DWORD cbParams,
    DWORD dwFlags
);

[DllImport("ncrypt.dll", ExactSpelling = true)]
static extern int SslCreateEphemeralKey(
    UIntPtr hSslProvider,   // NCRYPT_PROV_HANDLE
    out UIntPtr phEphemeralKey,   // NCRYPT_KEY_HANDLE* out
    uint dwProtocol,   // DWORD
    uint dwCipherSuite,   // DWORD
    uint dwKeyType,   // DWORD
    uint dwKeyBitLen,   // DWORD
    IntPtr pbParams,   // BYTE* optional
    uint cbParams,   // DWORD
    uint dwFlags   // DWORD
);

<DllImport("ncrypt.dll", ExactSpelling:=True)>
Public Shared Function SslCreateEphemeralKey(
    hSslProvider As UIntPtr,   ' NCRYPT_PROV_HANDLE
    <Out> ByRef phEphemeralKey As UIntPtr,   ' NCRYPT_KEY_HANDLE* out
    dwProtocol As UInteger,   ' DWORD
    dwCipherSuite As UInteger,   ' DWORD
    dwKeyType As UInteger,   ' DWORD
    dwKeyBitLen As UInteger,   ' DWORD
    pbParams As IntPtr,   ' BYTE* optional
    cbParams As UInteger,   ' DWORD
    dwFlags As UInteger   ' DWORD
) As Integer
End Function

' hSslProvider : NCRYPT_PROV_HANDLE
' phEphemeralKey : NCRYPT_KEY_HANDLE* out
' dwProtocol : DWORD
' dwCipherSuite : DWORD
' dwKeyType : DWORD
' dwKeyBitLen : DWORD
' pbParams : BYTE* optional
' cbParams : DWORD
' dwFlags : DWORD
Declare PtrSafe Function SslCreateEphemeralKey Lib "ncrypt" ( _
    ByVal hSslProvider As LongPtr, _
    ByRef phEphemeralKey As LongPtr, _
    ByVal dwProtocol As Long, _
    ByVal dwCipherSuite As Long, _
    ByVal dwKeyType As Long, _
    ByVal dwKeyBitLen As Long, _
    ByVal pbParams As LongPtr, _
    ByVal cbParams 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

SslCreateEphemeralKey = ctypes.windll.ncrypt.SslCreateEphemeralKey
SslCreateEphemeralKey.restype = ctypes.c_int
SslCreateEphemeralKey.argtypes = [
    ctypes.c_size_t,  # hSslProvider : NCRYPT_PROV_HANDLE
    ctypes.c_void_p,  # phEphemeralKey : NCRYPT_KEY_HANDLE* out
    wintypes.DWORD,  # dwProtocol : DWORD
    wintypes.DWORD,  # dwCipherSuite : DWORD
    wintypes.DWORD,  # dwKeyType : DWORD
    wintypes.DWORD,  # dwKeyBitLen : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # pbParams : BYTE* optional
    wintypes.DWORD,  # cbParams : DWORD
    wintypes.DWORD,  # dwFlags : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ncrypt.dll')
SslCreateEphemeralKey = Fiddle::Function.new(
  lib['SslCreateEphemeralKey'],
  [
    Fiddle::TYPE_UINTPTR_T,  # hSslProvider : NCRYPT_PROV_HANDLE
    Fiddle::TYPE_VOIDP,  # phEphemeralKey : NCRYPT_KEY_HANDLE* out
    -Fiddle::TYPE_INT,  # dwProtocol : DWORD
    -Fiddle::TYPE_INT,  # dwCipherSuite : DWORD
    -Fiddle::TYPE_INT,  # dwKeyType : DWORD
    -Fiddle::TYPE_INT,  # dwKeyBitLen : DWORD
    Fiddle::TYPE_VOIDP,  # pbParams : BYTE* optional
    -Fiddle::TYPE_INT,  # cbParams : DWORD
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "ncrypt")]
extern "system" {
    fn SslCreateEphemeralKey(
        hSslProvider: usize,  // NCRYPT_PROV_HANDLE
        phEphemeralKey: *mut usize,  // NCRYPT_KEY_HANDLE* out
        dwProtocol: u32,  // DWORD
        dwCipherSuite: u32,  // DWORD
        dwKeyType: u32,  // DWORD
        dwKeyBitLen: u32,  // DWORD
        pbParams: *mut u8,  // BYTE* optional
        cbParams: u32,  // DWORD
        dwFlags: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ncrypt.dll")]
public static extern int SslCreateEphemeralKey(UIntPtr hSslProvider, out UIntPtr phEphemeralKey, uint dwProtocol, uint dwCipherSuite, uint dwKeyType, uint dwKeyBitLen, IntPtr pbParams, uint cbParams, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ncrypt_SslCreateEphemeralKey' -Namespace Win32 -PassThru
# $api::SslCreateEphemeralKey(hSslProvider, phEphemeralKey, dwProtocol, dwCipherSuite, dwKeyType, dwKeyBitLen, pbParams, cbParams, dwFlags)

#uselib "ncrypt.dll"
#func global SslCreateEphemeralKey "SslCreateEphemeralKey" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; SslCreateEphemeralKey hSslProvider, varptr(phEphemeralKey), dwProtocol, dwCipherSuite, dwKeyType, dwKeyBitLen, varptr(pbParams), cbParams, dwFlags   ; 戻り値は stat
; hSslProvider : NCRYPT_PROV_HANDLE -> "sptr"
; phEphemeralKey : NCRYPT_KEY_HANDLE* out -> "sptr"
; dwProtocol : DWORD -> "sptr"
; dwCipherSuite : DWORD -> "sptr"
; dwKeyType : DWORD -> "sptr"
; dwKeyBitLen : DWORD -> "sptr"
; pbParams : BYTE* optional -> "sptr"
; cbParams : DWORD -> "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 "ncrypt.dll"
#cfunc global SslCreateEphemeralKey "SslCreateEphemeralKey" sptr, var, int, int, int, int, var, int, int
; res = SslCreateEphemeralKey(hSslProvider, phEphemeralKey, dwProtocol, dwCipherSuite, dwKeyType, dwKeyBitLen, pbParams, cbParams, dwFlags)
; hSslProvider : NCRYPT_PROV_HANDLE -> "sptr"
; phEphemeralKey : NCRYPT_KEY_HANDLE* out -> "var"
; dwProtocol : DWORD -> "int"
; dwCipherSuite : DWORD -> "int"
; dwKeyType : DWORD -> "int"
; dwKeyBitLen : DWORD -> "int"
; pbParams : BYTE* optional -> "var"
; cbParams : DWORD -> "int"
; 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 "ncrypt.dll"
#cfunc global SslCreateEphemeralKey "SslCreateEphemeralKey" sptr, sptr, int, int, int, int, sptr, int, int
; res = SslCreateEphemeralKey(hSslProvider, varptr(phEphemeralKey), dwProtocol, dwCipherSuite, dwKeyType, dwKeyBitLen, varptr(pbParams), cbParams, dwFlags)
; hSslProvider : NCRYPT_PROV_HANDLE -> "sptr"
; phEphemeralKey : NCRYPT_KEY_HANDLE* out -> "sptr"
; dwProtocol : DWORD -> "int"
; dwCipherSuite : DWORD -> "int"
; dwKeyType : DWORD -> "int"
; dwKeyBitLen : DWORD -> "int"
; pbParams : BYTE* optional -> "sptr"
; cbParams : DWORD -> "int"
; 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:

; HRESULT SslCreateEphemeralKey(NCRYPT_PROV_HANDLE hSslProvider, NCRYPT_KEY_HANDLE* phEphemeralKey, DWORD dwProtocol, DWORD dwCipherSuite, DWORD dwKeyType, DWORD dwKeyBitLen, BYTE* pbParams, DWORD cbParams, DWORD dwFlags)
#uselib "ncrypt.dll"
#cfunc global SslCreateEphemeralKey "SslCreateEphemeralKey" intptr, var, int, int, int, int, var, int, int
; res = SslCreateEphemeralKey(hSslProvider, phEphemeralKey, dwProtocol, dwCipherSuite, dwKeyType, dwKeyBitLen, pbParams, cbParams, dwFlags)
; hSslProvider : NCRYPT_PROV_HANDLE -> "intptr"
; phEphemeralKey : NCRYPT_KEY_HANDLE* out -> "var"
; dwProtocol : DWORD -> "int"
; dwCipherSuite : DWORD -> "int"
; dwKeyType : DWORD -> "int"
; dwKeyBitLen : DWORD -> "int"
; pbParams : BYTE* optional -> "var"
; cbParams : DWORD -> "int"
; 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。; HRESULT SslCreateEphemeralKey(NCRYPT_PROV_HANDLE hSslProvider, NCRYPT_KEY_HANDLE* phEphemeralKey, DWORD dwProtocol, DWORD dwCipherSuite, DWORD dwKeyType, DWORD dwKeyBitLen, BYTE* pbParams, DWORD cbParams, DWORD dwFlags)
#uselib "ncrypt.dll"
#cfunc global SslCreateEphemeralKey "SslCreateEphemeralKey" intptr, intptr, int, int, int, int, intptr, int, int
; res = SslCreateEphemeralKey(hSslProvider, varptr(phEphemeralKey), dwProtocol, dwCipherSuite, dwKeyType, dwKeyBitLen, varptr(pbParams), cbParams, dwFlags)
; hSslProvider : NCRYPT_PROV_HANDLE -> "intptr"
; phEphemeralKey : NCRYPT_KEY_HANDLE* out -> "intptr"
; dwProtocol : DWORD -> "int"
; dwCipherSuite : DWORD -> "int"
; dwKeyType : DWORD -> "int"
; dwKeyBitLen : DWORD -> "int"
; pbParams : BYTE* optional -> "intptr"
; cbParams : DWORD -> "int"
; 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 (
	ncrypt = windows.NewLazySystemDLL("ncrypt.dll")
	procSslCreateEphemeralKey = ncrypt.NewProc("SslCreateEphemeralKey")
)

// hSslProvider (NCRYPT_PROV_HANDLE), phEphemeralKey (NCRYPT_KEY_HANDLE* out), dwProtocol (DWORD), dwCipherSuite (DWORD), dwKeyType (DWORD), dwKeyBitLen (DWORD), pbParams (BYTE* optional), cbParams (DWORD), dwFlags (DWORD)
r1, _, err := procSslCreateEphemeralKey.Call(
	uintptr(hSslProvider),
	uintptr(phEphemeralKey),
	uintptr(dwProtocol),
	uintptr(dwCipherSuite),
	uintptr(dwKeyType),
	uintptr(dwKeyBitLen),
	uintptr(pbParams),
	uintptr(cbParams),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SslCreateEphemeralKey(
  hSslProvider: NativeUInt;   // NCRYPT_PROV_HANDLE
  phEphemeralKey: Pointer;   // NCRYPT_KEY_HANDLE* out
  dwProtocol: DWORD;   // DWORD
  dwCipherSuite: DWORD;   // DWORD
  dwKeyType: DWORD;   // DWORD
  dwKeyBitLen: DWORD;   // DWORD
  pbParams: Pointer;   // BYTE* optional
  cbParams: DWORD;   // DWORD
  dwFlags: DWORD   // DWORD
): Integer; stdcall;
  external 'ncrypt.dll' name 'SslCreateEphemeralKey';

result := DllCall("ncrypt\SslCreateEphemeralKey"
    , "UPtr", hSslProvider   ; NCRYPT_PROV_HANDLE
    , "Ptr", phEphemeralKey   ; NCRYPT_KEY_HANDLE* out
    , "UInt", dwProtocol   ; DWORD
    , "UInt", dwCipherSuite   ; DWORD
    , "UInt", dwKeyType   ; DWORD
    , "UInt", dwKeyBitLen   ; DWORD
    , "Ptr", pbParams   ; BYTE* optional
    , "UInt", cbParams   ; DWORD
    , "UInt", dwFlags   ; DWORD
    , "Int")   ; return: HRESULT

●SslCreateEphemeralKey(hSslProvider, phEphemeralKey, dwProtocol, dwCipherSuite, dwKeyType, dwKeyBitLen, pbParams, cbParams, dwFlags) = DLL("ncrypt.dll", "int SslCreateEphemeralKey(int, void*, dword, dword, dword, dword, void*, dword, dword)")
# 呼び出し: SslCreateEphemeralKey(hSslProvider, phEphemeralKey, dwProtocol, dwCipherSuite, dwKeyType, dwKeyBitLen, pbParams, cbParams, dwFlags)
# hSslProvider : NCRYPT_PROV_HANDLE -> "int"
# phEphemeralKey : NCRYPT_KEY_HANDLE* out -> "void*"
# dwProtocol : DWORD -> "dword"
# dwCipherSuite : DWORD -> "dword"
# dwKeyType : DWORD -> "dword"
# dwKeyBitLen : DWORD -> "dword"
# pbParams : BYTE* optional -> "void*"
# cbParams : DWORD -> "dword"
# 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)。

const std = @import("std");

extern "ncrypt" fn SslCreateEphemeralKey(
    hSslProvider: usize, // NCRYPT_PROV_HANDLE
    phEphemeralKey: [*c]usize, // NCRYPT_KEY_HANDLE* out
    dwProtocol: u32, // DWORD
    dwCipherSuite: u32, // DWORD
    dwKeyType: u32, // DWORD
    dwKeyBitLen: u32, // DWORD
    pbParams: [*c]u8, // BYTE* optional
    cbParams: u32, // DWORD
    dwFlags: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;

proc SslCreateEphemeralKey(
    hSslProvider: uint,  # NCRYPT_PROV_HANDLE
    phEphemeralKey: ptr uint,  # NCRYPT_KEY_HANDLE* out
    dwProtocol: uint32,  # DWORD
    dwCipherSuite: uint32,  # DWORD
    dwKeyType: uint32,  # DWORD
    dwKeyBitLen: uint32,  # DWORD
    pbParams: ptr uint8,  # BYTE* optional
    cbParams: uint32,  # DWORD
    dwFlags: uint32  # DWORD
): int32 {.importc: "SslCreateEphemeralKey", stdcall, dynlib: "ncrypt.dll".}

pragma(lib, "ncrypt");
extern(Windows)
int SslCreateEphemeralKey(
    size_t hSslProvider,   // NCRYPT_PROV_HANDLE
    size_t* phEphemeralKey,   // NCRYPT_KEY_HANDLE* out
    uint dwProtocol,   // DWORD
    uint dwCipherSuite,   // DWORD
    uint dwKeyType,   // DWORD
    uint dwKeyBitLen,   // DWORD
    ubyte* pbParams,   // BYTE* optional
    uint cbParams,   // DWORD
    uint dwFlags   // DWORD
);

ccall((:SslCreateEphemeralKey, "ncrypt.dll"), stdcall, Int32,
      (Csize_t, Ptr{Csize_t}, UInt32, UInt32, UInt32, UInt32, Ptr{UInt8}, UInt32, UInt32),
      hSslProvider, phEphemeralKey, dwProtocol, dwCipherSuite, dwKeyType, dwKeyBitLen, pbParams, cbParams, dwFlags)
# hSslProvider : NCRYPT_PROV_HANDLE -> Csize_t
# phEphemeralKey : NCRYPT_KEY_HANDLE* out -> Ptr{Csize_t}
# dwProtocol : DWORD -> UInt32
# dwCipherSuite : DWORD -> UInt32
# dwKeyType : DWORD -> UInt32
# dwKeyBitLen : DWORD -> UInt32
# pbParams : BYTE* optional -> Ptr{UInt8}
# cbParams : DWORD -> UInt32
# dwFlags : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t SslCreateEphemeralKey(
    uintptr_t hSslProvider,
    uintptr_t* phEphemeralKey,
    uint32_t dwProtocol,
    uint32_t dwCipherSuite,
    uint32_t dwKeyType,
    uint32_t dwKeyBitLen,
    uint8_t* pbParams,
    uint32_t cbParams,
    uint32_t dwFlags);
]]
local ncrypt = ffi.load("ncrypt")
-- ncrypt.SslCreateEphemeralKey(hSslProvider, phEphemeralKey, dwProtocol, dwCipherSuite, dwKeyType, dwKeyBitLen, pbParams, cbParams, dwFlags)
-- hSslProvider : NCRYPT_PROV_HANDLE
-- phEphemeralKey : NCRYPT_KEY_HANDLE* out
-- dwProtocol : DWORD
-- dwCipherSuite : DWORD
-- dwKeyType : DWORD
-- dwKeyBitLen : DWORD
-- pbParams : BYTE* optional
-- cbParams : DWORD
-- dwFlags : DWORD
-- 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('ncrypt.dll');
const SslCreateEphemeralKey = lib.func('__stdcall', 'SslCreateEphemeralKey', 'int32_t', ['uintptr_t', 'uintptr_t *', 'uint32_t', 'uint32_t', 'uint32_t', 'uint32_t', 'uint8_t *', 'uint32_t', 'uint32_t']);
// SslCreateEphemeralKey(hSslProvider, phEphemeralKey, dwProtocol, dwCipherSuite, dwKeyType, dwKeyBitLen, pbParams, cbParams, dwFlags)
// hSslProvider : NCRYPT_PROV_HANDLE -> 'uintptr_t'
// phEphemeralKey : NCRYPT_KEY_HANDLE* out -> 'uintptr_t *'
// dwProtocol : DWORD -> 'uint32_t'
// dwCipherSuite : DWORD -> 'uint32_t'
// dwKeyType : DWORD -> 'uint32_t'
// dwKeyBitLen : DWORD -> 'uint32_t'
// pbParams : BYTE* optional -> 'uint8_t *'
// cbParams : DWORD -> 'uint32_t'
// dwFlags : DWORD -> 'uint32_t'
// 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("ncrypt.dll", {
  SslCreateEphemeralKey: { parameters: ["usize", "pointer", "u32", "u32", "u32", "u32", "pointer", "u32", "u32"], result: "i32" },
});
// lib.symbols.SslCreateEphemeralKey(hSslProvider, phEphemeralKey, dwProtocol, dwCipherSuite, dwKeyType, dwKeyBitLen, pbParams, cbParams, dwFlags)
// hSslProvider : NCRYPT_PROV_HANDLE -> "usize"
// phEphemeralKey : NCRYPT_KEY_HANDLE* out -> "pointer"
// dwProtocol : DWORD -> "u32"
// dwCipherSuite : DWORD -> "u32"
// dwKeyType : DWORD -> "u32"
// dwKeyBitLen : DWORD -> "u32"
// pbParams : BYTE* optional -> "pointer"
// cbParams : DWORD -> "u32"
// dwFlags : DWORD -> "u32"
// 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 SslCreateEphemeralKey(
    size_t hSslProvider,
    size_t* phEphemeralKey,
    uint32_t dwProtocol,
    uint32_t dwCipherSuite,
    uint32_t dwKeyType,
    uint32_t dwKeyBitLen,
    uint8_t* pbParams,
    uint32_t cbParams,
    uint32_t dwFlags);
C, "ncrypt.dll");
// $ffi->SslCreateEphemeralKey(hSslProvider, phEphemeralKey, dwProtocol, dwCipherSuite, dwKeyType, dwKeyBitLen, pbParams, cbParams, dwFlags);
// hSslProvider : NCRYPT_PROV_HANDLE
// phEphemeralKey : NCRYPT_KEY_HANDLE* out
// dwProtocol : DWORD
// dwCipherSuite : DWORD
// dwKeyType : DWORD
// dwKeyBitLen : DWORD
// pbParams : BYTE* optional
// cbParams : DWORD
// dwFlags : DWORD
// 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 Ncrypt extends StdCallLibrary {
    Ncrypt INSTANCE = Native.load("ncrypt", Ncrypt.class);
    int SslCreateEphemeralKey(
        long hSslProvider,   // NCRYPT_PROV_HANDLE
        LongByReference phEphemeralKey,   // NCRYPT_KEY_HANDLE* out
        int dwProtocol,   // DWORD
        int dwCipherSuite,   // DWORD
        int dwKeyType,   // DWORD
        int dwKeyBitLen,   // DWORD
        byte[] pbParams,   // BYTE* optional
        int cbParams,   // DWORD
        int dwFlags   // DWORD
    );
}

@[Link("ncrypt")]
lib Libncrypt
  fun SslCreateEphemeralKey = SslCreateEphemeralKey(
    hSslProvider : LibC::SizeT,   # NCRYPT_PROV_HANDLE
    phEphemeralKey : LibC::SizeT*,   # NCRYPT_KEY_HANDLE* out
    dwProtocol : UInt32,   # DWORD
    dwCipherSuite : UInt32,   # DWORD
    dwKeyType : UInt32,   # DWORD
    dwKeyBitLen : UInt32,   # DWORD
    pbParams : UInt8*,   # BYTE* optional
    cbParams : UInt32,   # DWORD
    dwFlags : UInt32   # DWORD
  ) : 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 SslCreateEphemeralKeyNative = Int32 Function(UintPtr, Pointer<UintPtr>, Uint32, Uint32, Uint32, Uint32, Pointer<Uint8>, Uint32, Uint32);
typedef SslCreateEphemeralKeyDart = int Function(int, Pointer<UintPtr>, int, int, int, int, Pointer<Uint8>, int, int);
final SslCreateEphemeralKey = DynamicLibrary.open('ncrypt.dll')
    .lookupFunction<SslCreateEphemeralKeyNative, SslCreateEphemeralKeyDart>('SslCreateEphemeralKey');
// hSslProvider : NCRYPT_PROV_HANDLE -> UintPtr
// phEphemeralKey : NCRYPT_KEY_HANDLE* out -> Pointer<UintPtr>
// dwProtocol : DWORD -> Uint32
// dwCipherSuite : DWORD -> Uint32
// dwKeyType : DWORD -> Uint32
// dwKeyBitLen : DWORD -> Uint32
// pbParams : BYTE* optional -> Pointer<Uint8>
// cbParams : DWORD -> Uint32
// dwFlags : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SslCreateEphemeralKey(
  hSslProvider: NativeUInt;   // NCRYPT_PROV_HANDLE
  phEphemeralKey: Pointer;   // NCRYPT_KEY_HANDLE* out
  dwProtocol: DWORD;   // DWORD
  dwCipherSuite: DWORD;   // DWORD
  dwKeyType: DWORD;   // DWORD
  dwKeyBitLen: DWORD;   // DWORD
  pbParams: Pointer;   // BYTE* optional
  cbParams: DWORD;   // DWORD
  dwFlags: DWORD   // DWORD
): Integer; stdcall;
  external 'ncrypt.dll' name 'SslCreateEphemeralKey';

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

foreign import stdcall safe "SslCreateEphemeralKey"
  c_SslCreateEphemeralKey :: CUIntPtr -> Ptr CUIntPtr -> Word32 -> Word32 -> Word32 -> Word32 -> Ptr Word8 -> Word32 -> Word32 -> IO Int32
-- hSslProvider : NCRYPT_PROV_HANDLE -> CUIntPtr
-- phEphemeralKey : NCRYPT_KEY_HANDLE* out -> Ptr CUIntPtr
-- dwProtocol : DWORD -> Word32
-- dwCipherSuite : DWORD -> Word32
-- dwKeyType : DWORD -> Word32
-- dwKeyBitLen : DWORD -> Word32
-- pbParams : BYTE* optional -> Ptr Word8
-- cbParams : DWORD -> Word32
-- dwFlags : DWORD -> Word32
-- 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 sslcreateephemeralkey =
  foreign "SslCreateEphemeralKey"
    (size_t @-> (ptr size_t) @-> uint32_t @-> uint32_t @-> uint32_t @-> uint32_t @-> (ptr uint8_t) @-> uint32_t @-> uint32_t @-> returning int32_t)
(* hSslProvider : NCRYPT_PROV_HANDLE -> size_t *)
(* phEphemeralKey : NCRYPT_KEY_HANDLE* out -> (ptr size_t) *)
(* dwProtocol : DWORD -> uint32_t *)
(* dwCipherSuite : DWORD -> uint32_t *)
(* dwKeyType : DWORD -> uint32_t *)
(* dwKeyBitLen : DWORD -> uint32_t *)
(* pbParams : BYTE* optional -> (ptr uint8_t) *)
(* cbParams : DWORD -> uint32_t *)
(* dwFlags : DWORD -> uint32_t *)
(* 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 ncrypt (t "ncrypt.dll"))
(cffi:use-foreign-library ncrypt)

(cffi:defcfun ("SslCreateEphemeralKey" ssl-create-ephemeral-key :convention :stdcall) :int32
  (h-ssl-provider :uint64)   ; NCRYPT_PROV_HANDLE
  (ph-ephemeral-key :pointer)   ; NCRYPT_KEY_HANDLE* out
  (dw-protocol :uint32)   ; DWORD
  (dw-cipher-suite :uint32)   ; DWORD
  (dw-key-type :uint32)   ; DWORD
  (dw-key-bit-len :uint32)   ; DWORD
  (pb-params :pointer)   ; BYTE* optional
  (cb-params :uint32)   ; DWORD
  (dw-flags :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SslCreateEphemeralKey = Win32::API::More->new('ncrypt',
    'int SslCreateEphemeralKey(WPARAM hSslProvider, LPVOID phEphemeralKey, DWORD dwProtocol, DWORD dwCipherSuite, DWORD dwKeyType, DWORD dwKeyBitLen, LPVOID pbParams, DWORD cbParams, DWORD dwFlags)');
# my $ret = $SslCreateEphemeralKey->Call($hSslProvider, $phEphemeralKey, $dwProtocol, $dwCipherSuite, $dwKeyType, $dwKeyBitLen, $pbParams, $cbParams, $dwFlags);
# hSslProvider : NCRYPT_PROV_HANDLE -> WPARAM
# phEphemeralKey : NCRYPT_KEY_HANDLE* out -> LPVOID
# dwProtocol : DWORD -> DWORD
# dwCipherSuite : DWORD -> DWORD
# dwKeyType : DWORD -> DWORD
# dwKeyBitLen : DWORD -> DWORD
# pbParams : BYTE* optional -> LPVOID
# cbParams : DWORD -> DWORD
# dwFlags : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。