SslOpenProvider

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

HRESULT SslOpenProvider(
    NCRYPT_PROV_HANDLE* phSslProvider,
    LPCWSTR pszProviderName,
    DWORD dwFlags
);

<DllImport("ncrypt.dll", ExactSpelling:=True)>
Public Shared Function SslOpenProvider(
    <Out> ByRef phSslProvider As UIntPtr,   ' NCRYPT_PROV_HANDLE* out
    <MarshalAs(UnmanagedType.LPWStr)> pszProviderName As String,   ' LPCWSTR
    dwFlags As UInteger   ' DWORD
) As Integer
End Function

' phSslProvider : NCRYPT_PROV_HANDLE* out
' pszProviderName : LPCWSTR
' dwFlags : DWORD
Declare PtrSafe Function SslOpenProvider Lib "ncrypt" ( _
    ByRef phSslProvider As LongPtr, _
    ByVal pszProviderName As LongPtr, _
    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

SslOpenProvider = ctypes.windll.ncrypt.SslOpenProvider
SslOpenProvider.restype = ctypes.c_int
SslOpenProvider.argtypes = [
    ctypes.c_void_p,  # phSslProvider : NCRYPT_PROV_HANDLE* out
    wintypes.LPCWSTR,  # pszProviderName : LPCWSTR
    wintypes.DWORD,  # dwFlags : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ncrypt.dll')
SslOpenProvider = Fiddle::Function.new(
  lib['SslOpenProvider'],
  [
    Fiddle::TYPE_VOIDP,  # phSslProvider : NCRYPT_PROV_HANDLE* out
    Fiddle::TYPE_VOIDP,  # pszProviderName : LPCWSTR
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "ncrypt")]
extern "system" {
    fn SslOpenProvider(
        phSslProvider: *mut usize,  // NCRYPT_PROV_HANDLE* out
        pszProviderName: *const u16,  // LPCWSTR
        dwFlags: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ncrypt.dll")]
public static extern int SslOpenProvider(out UIntPtr phSslProvider, [MarshalAs(UnmanagedType.LPWStr)] string pszProviderName, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ncrypt_SslOpenProvider' -Namespace Win32 -PassThru
# $api::SslOpenProvider(phSslProvider, pszProviderName, dwFlags)

#uselib "ncrypt.dll"
#func global SslOpenProvider "SslOpenProvider" sptr, sptr, sptr
; SslOpenProvider phSslProvider, pszProviderName, dwFlags   ; 戻り値は stat
; phSslProvider : NCRYPT_PROV_HANDLE* out -> "sptr"
; pszProviderName : LPCWSTR -> "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。

#uselib "ncrypt.dll"
#cfunc global SslOpenProvider "SslOpenProvider" int, wstr, int
; res = SslOpenProvider(phSslProvider, pszProviderName, dwFlags)
; phSslProvider : NCRYPT_PROV_HANDLE* out -> "int"
; pszProviderName : LPCWSTR -> "wstr"
; dwFlags : DWORD -> "int"

; HRESULT SslOpenProvider(NCRYPT_PROV_HANDLE* phSslProvider, LPCWSTR pszProviderName, DWORD dwFlags)
#uselib "ncrypt.dll"
#cfunc global SslOpenProvider "SslOpenProvider" int, wstr, int
; res = SslOpenProvider(phSslProvider, pszProviderName, dwFlags)
; phSslProvider : NCRYPT_PROV_HANDLE* out -> "int"
; pszProviderName : LPCWSTR -> "wstr"
; dwFlags : DWORD -> "int"

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

var (
	ncrypt = windows.NewLazySystemDLL("ncrypt.dll")
	procSslOpenProvider = ncrypt.NewProc("SslOpenProvider")
)

// phSslProvider (NCRYPT_PROV_HANDLE* out), pszProviderName (LPCWSTR), dwFlags (DWORD)
r1, _, err := procSslOpenProvider.Call(
	uintptr(phSslProvider),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszProviderName))),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SslOpenProvider(
  phSslProvider: Pointer;   // NCRYPT_PROV_HANDLE* out
  pszProviderName: PWideChar;   // LPCWSTR
  dwFlags: DWORD   // DWORD
): Integer; stdcall;
  external 'ncrypt.dll' name 'SslOpenProvider';

result := DllCall("ncrypt\SslOpenProvider"
    , "Ptr", phSslProvider   ; NCRYPT_PROV_HANDLE* out
    , "WStr", pszProviderName   ; LPCWSTR
    , "UInt", dwFlags   ; DWORD
    , "Int")   ; return: HRESULT

●SslOpenProvider(phSslProvider, pszProviderName, dwFlags) = DLL("ncrypt.dll", "int SslOpenProvider(void*, char*, dword)")
# 呼び出し: SslOpenProvider(phSslProvider, pszProviderName, dwFlags)
# phSslProvider : NCRYPT_PROV_HANDLE* out -> "void*"
# pszProviderName : LPCWSTR -> "char*"
# 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)。