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CryptGetDefaultProviderA

関数

指定タイプの既定暗号プロバイダー名を取得する(ANSI版)。

DLLADVAPI32.dll文字セットANSI (-A)呼出規約winapiSetLastErrorあり対応OSWindows XP 以降

シグネチャ

// ADVAPI32.dll  (ANSI / -A)
#include <windows.h>

BOOL CryptGetDefaultProviderA(
    DWORD dwProvType,
    DWORD* pdwReserved,   // optional
    DWORD dwFlags,
    LPSTR pszProvName,   // optional
    DWORD* pcbProvName
);

パラメーター

名前	型	方向
dwProvType	DWORD	in
pdwReserved	DWORD*	optional
dwFlags	DWORD	in
pszProvName	LPSTR	outoptional
pcbProvName	DWORD*	inout

戻り値の型: BOOL

各言語での呼び出し定義

// ADVAPI32.dll  (ANSI / -A)
#include <windows.h>

BOOL CryptGetDefaultProviderA(
    DWORD dwProvType,
    DWORD* pdwReserved,   // optional
    DWORD dwFlags,
    LPSTR pszProvName,   // optional
    DWORD* pcbProvName
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
static extern bool CryptGetDefaultProviderA(
    uint dwProvType,   // DWORD
    IntPtr pdwReserved,   // DWORD* optional
    uint dwFlags,   // DWORD
    [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pszProvName,   // LPSTR optional, out
    ref uint pcbProvName   // DWORD* in/out
);

<DllImport("ADVAPI32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CryptGetDefaultProviderA(
    dwProvType As UInteger,   ' DWORD
    pdwReserved As IntPtr,   ' DWORD* optional
    dwFlags As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPStr)> pszProvName As System.Text.StringBuilder,   ' LPSTR optional, out
    ByRef pcbProvName As UInteger   ' DWORD* in/out
) As Boolean
End Function

' dwProvType : DWORD
' pdwReserved : DWORD* optional
' dwFlags : DWORD
' pszProvName : LPSTR optional, out
' pcbProvName : DWORD* in/out
Declare PtrSafe Function CryptGetDefaultProviderA Lib "advapi32" ( _
    ByVal dwProvType As Long, _
    ByVal pdwReserved As LongPtr, _
    ByVal dwFlags As Long, _
    ByVal pszProvName As String, _
    ByRef pcbProvName 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

CryptGetDefaultProviderA = ctypes.windll.advapi32.CryptGetDefaultProviderA
CryptGetDefaultProviderA.restype = wintypes.BOOL
CryptGetDefaultProviderA.argtypes = [
    wintypes.DWORD,  # dwProvType : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pdwReserved : DWORD* optional
    wintypes.DWORD,  # dwFlags : DWORD
    wintypes.LPSTR,  # pszProvName : LPSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcbProvName : DWORD* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
CryptGetDefaultProviderA = Fiddle::Function.new(
  lib['CryptGetDefaultProviderA'],
  [
    -Fiddle::TYPE_INT,  # dwProvType : DWORD
    Fiddle::TYPE_VOIDP,  # pdwReserved : DWORD* optional
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # pszProvName : LPSTR optional, out
    Fiddle::TYPE_VOIDP,  # pcbProvName : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "advapi32")]
extern "system" {
    fn CryptGetDefaultProviderA(
        dwProvType: u32,  // DWORD
        pdwReserved: *mut u32,  // DWORD* optional
        dwFlags: u32,  // DWORD
        pszProvName: *mut u8,  // LPSTR optional, out
        pcbProvName: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern bool CryptGetDefaultProviderA(uint dwProvType, IntPtr pdwReserved, uint dwFlags, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pszProvName, ref uint pcbProvName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_CryptGetDefaultProviderA' -Namespace Win32 -PassThru
# $api::CryptGetDefaultProviderA(dwProvType, pdwReserved, dwFlags, pszProvName, pcbProvName)

#uselib "ADVAPI32.dll"
#func global CryptGetDefaultProviderA "CryptGetDefaultProviderA" sptr, sptr, sptr, sptr, sptr
; CryptGetDefaultProviderA dwProvType, varptr(pdwReserved), dwFlags, varptr(pszProvName), varptr(pcbProvName)   ; 戻り値は stat
; dwProvType : DWORD -> "sptr"
; pdwReserved : DWORD* optional -> "sptr"
; dwFlags : DWORD -> "sptr"
; pszProvName : LPSTR optional, out -> "sptr"
; pcbProvName : DWORD* in/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 "ADVAPI32.dll"
#cfunc global CryptGetDefaultProviderA "CryptGetDefaultProviderA" int, var, int, var, var
; res = CryptGetDefaultProviderA(dwProvType, pdwReserved, dwFlags, pszProvName, pcbProvName)
; dwProvType : DWORD -> "int"
; pdwReserved : DWORD* optional -> "var"
; dwFlags : DWORD -> "int"
; pszProvName : LPSTR optional, out -> "var"
; pcbProvName : DWORD* in/out -> "var"
; ※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 "ADVAPI32.dll"
#cfunc global CryptGetDefaultProviderA "CryptGetDefaultProviderA" int, sptr, int, sptr, sptr
; res = CryptGetDefaultProviderA(dwProvType, varptr(pdwReserved), dwFlags, varptr(pszProvName), varptr(pcbProvName))
; dwProvType : DWORD -> "int"
; pdwReserved : DWORD* optional -> "sptr"
; dwFlags : DWORD -> "int"
; pszProvName : LPSTR optional, out -> "sptr"
; pcbProvName : DWORD* in/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 CryptGetDefaultProviderA(DWORD dwProvType, DWORD* pdwReserved, DWORD dwFlags, LPSTR pszProvName, DWORD* pcbProvName)
#uselib "ADVAPI32.dll"
#cfunc global CryptGetDefaultProviderA "CryptGetDefaultProviderA" int, var, int, var, var
; res = CryptGetDefaultProviderA(dwProvType, pdwReserved, dwFlags, pszProvName, pcbProvName)
; dwProvType : DWORD -> "int"
; pdwReserved : DWORD* optional -> "var"
; dwFlags : DWORD -> "int"
; pszProvName : LPSTR optional, out -> "var"
; pcbProvName : DWORD* in/out -> "var"
; ※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 CryptGetDefaultProviderA(DWORD dwProvType, DWORD* pdwReserved, DWORD dwFlags, LPSTR pszProvName, DWORD* pcbProvName)
#uselib "ADVAPI32.dll"
#cfunc global CryptGetDefaultProviderA "CryptGetDefaultProviderA" int, intptr, int, intptr, intptr
; res = CryptGetDefaultProviderA(dwProvType, varptr(pdwReserved), dwFlags, varptr(pszProvName), varptr(pcbProvName))
; dwProvType : DWORD -> "int"
; pdwReserved : DWORD* optional -> "intptr"
; dwFlags : DWORD -> "int"
; pszProvName : LPSTR optional, out -> "intptr"
; pcbProvName : DWORD* in/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 (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procCryptGetDefaultProviderA = advapi32.NewProc("CryptGetDefaultProviderA")
)

// dwProvType (DWORD), pdwReserved (DWORD* optional), dwFlags (DWORD), pszProvName (LPSTR optional, out), pcbProvName (DWORD* in/out)
r1, _, err := procCryptGetDefaultProviderA.Call(
	uintptr(dwProvType),
	uintptr(pdwReserved),
	uintptr(dwFlags),
	uintptr(pszProvName),
	uintptr(pcbProvName),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CryptGetDefaultProviderA(
  dwProvType: DWORD;   // DWORD
  pdwReserved: Pointer;   // DWORD* optional
  dwFlags: DWORD;   // DWORD
  pszProvName: PAnsiChar;   // LPSTR optional, out
  pcbProvName: Pointer   // DWORD* in/out
): BOOL; stdcall;
  external 'ADVAPI32.dll' name 'CryptGetDefaultProviderA';

result := DllCall("ADVAPI32\CryptGetDefaultProviderA"
    , "UInt", dwProvType   ; DWORD
    , "Ptr", pdwReserved   ; DWORD* optional
    , "UInt", dwFlags   ; DWORD
    , "Ptr", pszProvName   ; LPSTR optional, out
    , "Ptr", pcbProvName   ; DWORD* in/out
    , "Int")   ; return: BOOL

●CryptGetDefaultProviderA(dwProvType, pdwReserved, dwFlags, pszProvName, pcbProvName) = DLL("ADVAPI32.dll", "bool CryptGetDefaultProviderA(dword, void*, dword, char*, void*)")
# 呼び出し: CryptGetDefaultProviderA(dwProvType, pdwReserved, dwFlags, pszProvName, pcbProvName)
# dwProvType : DWORD -> "dword"
# pdwReserved : DWORD* optional -> "void*"
# dwFlags : DWORD -> "dword"
# pszProvName : LPSTR optional, out -> "char*"
# pcbProvName : DWORD* in/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)。