EncryptMessage

// SECUR32.dll
#include <windows.h>

HRESULT EncryptMessage(
    SecHandle* phContext,
    DWORD fQOP,
    SecBufferDesc* pMessage,
    DWORD MessageSeqNo
);

<DllImport("SECUR32.dll", ExactSpelling:=True)>
Public Shared Function EncryptMessage(
    phContext As IntPtr,   ' SecHandle*
    fQOP As UInteger,   ' DWORD
    pMessage As IntPtr,   ' SecBufferDesc*
    MessageSeqNo As UInteger   ' DWORD
) As Integer
End Function

' phContext : SecHandle*
' fQOP : DWORD
' pMessage : SecBufferDesc*
' MessageSeqNo : DWORD
Declare PtrSafe Function EncryptMessage Lib "secur32" ( _
    ByVal phContext As LongPtr, _
    ByVal fQOP As Long, _
    ByVal pMessage As LongPtr, _
    ByVal MessageSeqNo 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

EncryptMessage = ctypes.windll.secur32.EncryptMessage
EncryptMessage.restype = ctypes.c_int
EncryptMessage.argtypes = [
    ctypes.c_void_p,  # phContext : SecHandle*
    wintypes.DWORD,  # fQOP : DWORD
    ctypes.c_void_p,  # pMessage : SecBufferDesc*
    wintypes.DWORD,  # MessageSeqNo : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SECUR32.dll')
EncryptMessage = Fiddle::Function.new(
  lib['EncryptMessage'],
  [
    Fiddle::TYPE_VOIDP,  # phContext : SecHandle*
    -Fiddle::TYPE_INT,  # fQOP : DWORD
    Fiddle::TYPE_VOIDP,  # pMessage : SecBufferDesc*
    -Fiddle::TYPE_INT,  # MessageSeqNo : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "secur32")]
extern "system" {
    fn EncryptMessage(
        phContext: *mut SecHandle,  // SecHandle*
        fQOP: u32,  // DWORD
        pMessage: *mut SecBufferDesc,  // SecBufferDesc*
        MessageSeqNo: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SECUR32.dll")]
public static extern int EncryptMessage(IntPtr phContext, uint fQOP, IntPtr pMessage, uint MessageSeqNo);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SECUR32_EncryptMessage' -Namespace Win32 -PassThru
# $api::EncryptMessage(phContext, fQOP, pMessage, MessageSeqNo)

#uselib "SECUR32.dll"
#func global EncryptMessage "EncryptMessage" sptr, sptr, sptr, sptr
; EncryptMessage varptr(phContext), fQOP, varptr(pMessage), MessageSeqNo   ; 戻り値は stat
; phContext : SecHandle* -> "sptr"
; fQOP : DWORD -> "sptr"
; pMessage : SecBufferDesc* -> "sptr"
; MessageSeqNo : 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。

#uselib "SECUR32.dll"
#cfunc global EncryptMessage "EncryptMessage" var, int, var, int
; res = EncryptMessage(phContext, fQOP, pMessage, MessageSeqNo)
; phContext : SecHandle* -> "var"
; fQOP : DWORD -> "int"
; pMessage : SecBufferDesc* -> "var"
; MessageSeqNo : 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 EncryptMessage(SecHandle* phContext, DWORD fQOP, SecBufferDesc* pMessage, DWORD MessageSeqNo)
#uselib "SECUR32.dll"
#cfunc global EncryptMessage "EncryptMessage" var, int, var, int
; res = EncryptMessage(phContext, fQOP, pMessage, MessageSeqNo)
; phContext : SecHandle* -> "var"
; fQOP : DWORD -> "int"
; pMessage : SecBufferDesc* -> "var"
; MessageSeqNo : 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。

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

var (
	secur32 = windows.NewLazySystemDLL("SECUR32.dll")
	procEncryptMessage = secur32.NewProc("EncryptMessage")
)

// phContext (SecHandle*), fQOP (DWORD), pMessage (SecBufferDesc*), MessageSeqNo (DWORD)
r1, _, err := procEncryptMessage.Call(
	uintptr(phContext),
	uintptr(fQOP),
	uintptr(pMessage),
	uintptr(MessageSeqNo),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function EncryptMessage(
  phContext: Pointer;   // SecHandle*
  fQOP: DWORD;   // DWORD
  pMessage: Pointer;   // SecBufferDesc*
  MessageSeqNo: DWORD   // DWORD
): Integer; stdcall;
  external 'SECUR32.dll' name 'EncryptMessage';

result := DllCall("SECUR32\EncryptMessage"
    , "Ptr", phContext   ; SecHandle*
    , "UInt", fQOP   ; DWORD
    , "Ptr", pMessage   ; SecBufferDesc*
    , "UInt", MessageSeqNo   ; DWORD
    , "Int")   ; return: HRESULT

●EncryptMessage(phContext, fQOP, pMessage, MessageSeqNo) = DLL("SECUR32.dll", "int EncryptMessage(void*, dword, void*, dword)")
# 呼び出し: EncryptMessage(phContext, fQOP, pMessage, MessageSeqNo)
# phContext : SecHandle* -> "void*"
# fQOP : DWORD -> "dword"
# pMessage : SecBufferDesc* -> "void*"
# MessageSeqNo : 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)。