Win32 API 日本語リファレンス
ホーム › Security.Cryptography › CMSG_KEY_AGREE_RECIPIENT_INFO

CMSG_KEY_AGREE_RECIPIENT_INFO

構造体
📘 Microsoft Learn (日本語) · English
サイズx64: 112 バイト / x86: 60 バイト

サイズ=各フィールドのバイト数(x64/x86 で異なる場合は x64/x86 と併記)。x64/x86 列=フィールドのバイトオフセット(HSPで dupptr / lpoke / wpoke 等に使用)。

フィールド

フィールド型サイズx64x86説明
dwVersionDWORD4+0+0鍵共有受信者情報のバージョン番号。
dwOriginatorChoiceCMSG_KEY_AGREE_ORIGINATOR4+4+4送信者鍵の指定方法(証明書/公開鍵)を示す列挙値。
Anonymous_Anonymous_e__Union48/24+8+8送信者の証明書IDまたは公開鍵情報を保持する共用体。
UserKeyingMaterialCRYPT_INTEGER_BLOB16/8+56+32鍵導出に使うユーザ鍵素材を格納するBLOB。
KeyEncryptionAlgorithmCRYPT_ALGORITHM_IDENTIFIER24/12+72+40鍵共有による鍵暗号化アルゴリズム識別子。
cRecipientEncryptedKeysDWORD4+96+52rgpRecipientEncryptedKeys配列の要素数。
rgpRecipientEncryptedKeysCMSG_RECIPIENT_ENCRYPTED_KEY_INFO**8/4+104+56受信者ごとの暗号化鍵情報ポインタの配列へのポインタ。

共用体: _Anonymous_e__Union x64 48B / x86 24B

フィールド型サイズx64x86
OriginatorCertIdCERT_ID40/20+0+0
OriginatorPublicKeyInfoCERT_PUBLIC_KEY_INFO48/24+0+0

各言語での定義

#include <windows.h>

// CRYPT_INTEGER_BLOB  (x64 16 / x86 8 バイト)
typedef struct CRYPT_INTEGER_BLOB {
    DWORD cbData;
    BYTE* pbData;
} CRYPT_INTEGER_BLOB;

// CRYPT_ALGORITHM_IDENTIFIER  (x64 24 / x86 12 バイト)
typedef struct CRYPT_ALGORITHM_IDENTIFIER {
    LPSTR pszObjId;
    CRYPT_INTEGER_BLOB Parameters;
} CRYPT_ALGORITHM_IDENTIFIER;

// CMSG_KEY_AGREE_RECIPIENT_INFO  (x64 112 / x86 60 バイト)
typedef struct CMSG_KEY_AGREE_RECIPIENT_INFO {
    DWORD dwVersion;
    CMSG_KEY_AGREE_ORIGINATOR dwOriginatorChoice;
    _Anonymous_e__Union Anonymous;
    CRYPT_INTEGER_BLOB UserKeyingMaterial;
    CRYPT_ALGORITHM_IDENTIFIER KeyEncryptionAlgorithm;
    DWORD cRecipientEncryptedKeys;
    CMSG_RECIPIENT_ENCRYPTED_KEY_INFO** rgpRecipientEncryptedKeys;
} CMSG_KEY_AGREE_RECIPIENT_INFO;
using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct CRYPT_INTEGER_BLOB
{
    public uint cbData;
    public IntPtr pbData;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct CRYPT_ALGORITHM_IDENTIFIER
{
    public IntPtr pszObjId;
    public CRYPT_INTEGER_BLOB Parameters;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct CMSG_KEY_AGREE_RECIPIENT_INFO
{
    public uint dwVersion;
    public uint dwOriginatorChoice;
    public _Anonymous_e__Union Anonymous;
    public CRYPT_INTEGER_BLOB UserKeyingMaterial;
    public CRYPT_ALGORITHM_IDENTIFIER KeyEncryptionAlgorithm;
    public uint cRecipientEncryptedKeys;
    public IntPtr rgpRecipientEncryptedKeys;
}
Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure CRYPT_INTEGER_BLOB
    Public cbData As UInteger
    Public pbData As IntPtr
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure CRYPT_ALGORITHM_IDENTIFIER
    Public pszObjId As IntPtr
    Public Parameters As CRYPT_INTEGER_BLOB
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure CMSG_KEY_AGREE_RECIPIENT_INFO
    Public dwVersion As UInteger
    Public dwOriginatorChoice As UInteger
    Public Anonymous As _Anonymous_e__Union
    Public UserKeyingMaterial As CRYPT_INTEGER_BLOB
    Public KeyEncryptionAlgorithm As CRYPT_ALGORITHM_IDENTIFIER
    Public cRecipientEncryptedKeys As UInteger
    Public rgpRecipientEncryptedKeys As IntPtr
End Structure
import ctypes
from ctypes import wintypes

class CRYPT_INTEGER_BLOB(ctypes.Structure):
    _fields_ = [
        ("cbData", wintypes.DWORD),
        ("pbData", ctypes.c_void_p),
    ]

class CRYPT_ALGORITHM_IDENTIFIER(ctypes.Structure):
    _fields_ = [
        ("pszObjId", ctypes.c_void_p),
        ("Parameters", CRYPT_INTEGER_BLOB),
    ]

class CMSG_KEY_AGREE_RECIPIENT_INFO(ctypes.Structure):
    _fields_ = [
        ("dwVersion", wintypes.DWORD),
        ("dwOriginatorChoice", wintypes.DWORD),
        ("Anonymous", _Anonymous_e__Union),
        ("UserKeyingMaterial", CRYPT_INTEGER_BLOB),
        ("KeyEncryptionAlgorithm", CRYPT_ALGORITHM_IDENTIFIER),
        ("cRecipientEncryptedKeys", wintypes.DWORD),
        ("rgpRecipientEncryptedKeys", ctypes.c_void_p),
    ]
#[repr(C)]
pub struct CRYPT_INTEGER_BLOB {
    pub cbData: u32,
    pub pbData: *mut core::ffi::c_void,
}

#[repr(C)]
pub struct CRYPT_ALGORITHM_IDENTIFIER {
    pub pszObjId: *mut core::ffi::c_void,
    pub Parameters: CRYPT_INTEGER_BLOB,
}

#[repr(C)]
pub struct CMSG_KEY_AGREE_RECIPIENT_INFO {
    pub dwVersion: u32,
    pub dwOriginatorChoice: u32,
    pub Anonymous: _Anonymous_e__Union,
    pub UserKeyingMaterial: CRYPT_INTEGER_BLOB,
    pub KeyEncryptionAlgorithm: CRYPT_ALGORITHM_IDENTIFIER,
    pub cRecipientEncryptedKeys: u32,
    pub rgpRecipientEncryptedKeys: *mut core::ffi::c_void,
}
import "golang.org/x/sys/windows"

type CRYPT_INTEGER_BLOB struct {
	cbData uint32
	pbData uintptr
}

type CRYPT_ALGORITHM_IDENTIFIER struct {
	pszObjId uintptr
	Parameters CRYPT_INTEGER_BLOB
}

type CMSG_KEY_AGREE_RECIPIENT_INFO struct {
	dwVersion uint32
	dwOriginatorChoice uint32
	Anonymous _Anonymous_e__Union
	UserKeyingMaterial CRYPT_INTEGER_BLOB
	KeyEncryptionAlgorithm CRYPT_ALGORITHM_IDENTIFIER
	cRecipientEncryptedKeys uint32
	rgpRecipientEncryptedKeys uintptr
}
type
  CRYPT_INTEGER_BLOB = record
    cbData: DWORD;
    pbData: Pointer;
  end;

  CRYPT_ALGORITHM_IDENTIFIER = record
    pszObjId: Pointer;
    Parameters: CRYPT_INTEGER_BLOB;
  end;

  CMSG_KEY_AGREE_RECIPIENT_INFO = record
    dwVersion: DWORD;
    dwOriginatorChoice: DWORD;
    Anonymous: _Anonymous_e__Union;
    UserKeyingMaterial: CRYPT_INTEGER_BLOB;
    KeyEncryptionAlgorithm: CRYPT_ALGORITHM_IDENTIFIER;
    cRecipientEncryptedKeys: DWORD;
    rgpRecipientEncryptedKeys: Pointer;
  end;
const CRYPT_INTEGER_BLOB = extern struct {
    cbData: u32,
    pbData: ?*anyopaque,
};

const CRYPT_ALGORITHM_IDENTIFIER = extern struct {
    pszObjId: ?*anyopaque,
    Parameters: CRYPT_INTEGER_BLOB,
};

const CMSG_KEY_AGREE_RECIPIENT_INFO = extern struct {
    dwVersion: u32,
    dwOriginatorChoice: u32,
    Anonymous: _Anonymous_e__Union,
    UserKeyingMaterial: CRYPT_INTEGER_BLOB,
    KeyEncryptionAlgorithm: CRYPT_ALGORITHM_IDENTIFIER,
    cRecipientEncryptedKeys: u32,
    rgpRecipientEncryptedKeys: ?*anyopaque,
};
type
  CRYPT_INTEGER_BLOB {.bycopy.} = object
    cbData: uint32
    pbData: pointer

  CRYPT_ALGORITHM_IDENTIFIER {.bycopy.} = object
    pszObjId: pointer
    Parameters: CRYPT_INTEGER_BLOB

  CMSG_KEY_AGREE_RECIPIENT_INFO {.bycopy.} = object
    dwVersion: uint32
    dwOriginatorChoice: uint32
    Anonymous: _Anonymous_e__Union
    UserKeyingMaterial: CRYPT_INTEGER_BLOB
    KeyEncryptionAlgorithm: CRYPT_ALGORITHM_IDENTIFIER
    cRecipientEncryptedKeys: uint32
    rgpRecipientEncryptedKeys: pointer
struct CRYPT_INTEGER_BLOB
{
    uint cbData;
    void* pbData;
}

struct CRYPT_ALGORITHM_IDENTIFIER
{
    void* pszObjId;
    CRYPT_INTEGER_BLOB Parameters;
}

struct CMSG_KEY_AGREE_RECIPIENT_INFO
{
    uint dwVersion;
    uint dwOriginatorChoice;
    _Anonymous_e__Union Anonymous;
    CRYPT_INTEGER_BLOB UserKeyingMaterial;
    CRYPT_ALGORITHM_IDENTIFIER KeyEncryptionAlgorithm;
    uint cRecipientEncryptedKeys;
    void* rgpRecipientEncryptedKeys;
}

HSP用 定義

HSP3.7/3.8 は構造体機能が無いため4byte整数配列(dim)+peek/poke で操作(32/64bitでサイズ・位置が異なる場合はタブで分割)。IronHSP は NSTRUCT(#defstruct/stdim/->)で32/64bit共通。

; HSP3.7/3.8 は構造体機能が無いため、4byte整数の配列変数で操作します。(x86 レイアウト)
; CMSG_KEY_AGREE_RECIPIENT_INFO サイズ: 60 バイト(x86)
dim st, 15    ; 4byte整数×15(構造体サイズ 60 / 4 切り上げ)
; dwVersion : DWORD (+0, 4byte)  st.0 = 値  /  値 = st.0   (lpoke/lpeek も可)
; dwOriginatorChoice : CMSG_KEY_AGREE_ORIGINATOR (+4, 4byte)  st.1 = 値  /  値 = st.1   (lpoke/lpeek も可)
; Anonymous : _Anonymous_e__Union (+8, 24byte)  varptr(st)+8 を基点に操作(24byte:入れ子/配列)
; UserKeyingMaterial : CRYPT_INTEGER_BLOB (+32, 8byte)  varptr(st)+32 を基点に操作(8byte:入れ子/配列)
; KeyEncryptionAlgorithm : CRYPT_ALGORITHM_IDENTIFIER (+40, 12byte)  varptr(st)+40 を基点に操作(12byte:入れ子/配列)
; cRecipientEncryptedKeys : DWORD (+52, 4byte)  st.13 = 値  /  値 = st.13   (lpoke/lpeek も可)
; rgpRecipientEncryptedKeys : CMSG_RECIPIENT_ENCRYPTED_KEY_INFO** (+56, 4byte)  varptr(st)+56 を基点に操作(4byte:入れ子/配列)
; ※4byte境界の整数は添字 st.N(N=オフセット/4)で読み書き可。それ以外は peek/poke 系を使用。
; HSP3.7/3.8 は構造体機能が無いため、4byte整数の配列変数で操作します。(x64 レイアウト)
; CMSG_KEY_AGREE_RECIPIENT_INFO サイズ: 112 バイト(x64)
dim st, 28    ; 4byte整数×28(構造体サイズ 112 / 4 切り上げ)
; dwVersion : DWORD (+0, 4byte)  st.0 = 値  /  値 = st.0   (lpoke/lpeek も可)
; dwOriginatorChoice : CMSG_KEY_AGREE_ORIGINATOR (+4, 4byte)  st.1 = 値  /  値 = st.1   (lpoke/lpeek も可)
; Anonymous : _Anonymous_e__Union (+8, 48byte)  varptr(st)+8 を基点に操作(48byte:入れ子/配列)
; UserKeyingMaterial : CRYPT_INTEGER_BLOB (+56, 16byte)  varptr(st)+56 を基点に操作(16byte:入れ子/配列)
; KeyEncryptionAlgorithm : CRYPT_ALGORITHM_IDENTIFIER (+72, 24byte)  varptr(st)+72 を基点に操作(24byte:入れ子/配列)
; cRecipientEncryptedKeys : DWORD (+96, 4byte)  st.24 = 値  /  値 = st.24   (lpoke/lpeek も可)
; rgpRecipientEncryptedKeys : CMSG_RECIPIENT_ENCRYPTED_KEY_INFO** (+104, 8byte)  varptr(st)+104 を基点に操作(8byte:入れ子/配列)
; ※4byte境界の整数は添字 st.N(N=オフセット/4)で読み書き可。それ以外は peek/poke 系を使用。
; IronHSP は NSTRUCT(構造体)をサポート。32bit/64bit どちらでも同じコードで動作します。
; ※GUID・入れ子構造体はデフォルト型でないため、依存する #defstruct を先に定義(下記に同梱)。
#defstruct global CRYPT_INTEGER_BLOB
    #field int cbData
    #field intptr pbData
#endstruct

#defstruct global CRYPT_ALGORITHM_IDENTIFIER
    #field intptr pszObjId
    #field CRYPT_INTEGER_BLOB Parameters
#endstruct

#defstruct global CMSG_KEY_AGREE_RECIPIENT_INFO
    #field int dwVersion
    #field int dwOriginatorChoice
    #field byte Anonymous 48
    #field CRYPT_INTEGER_BLOB UserKeyingMaterial
    #field CRYPT_ALGORITHM_IDENTIFIER KeyEncryptionAlgorithm
    #field int cRecipientEncryptedKeys
    #field intptr rgpRecipientEncryptedKeys
#endstruct

stdim st, CMSG_KEY_AGREE_RECIPIENT_INFO        ; NSTRUCT 変数を確保
st->dwVersion = 100
mes "dwVersion=" + st->dwVersion
; ※union フィールドは byte 列で確保(NSTRUCT は union 非対応)。必要に応じ手動でアクセス。