Code Snippet
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Security;
using System.Security.Cryptography;
using System.Drawing.Imaging;
namespace testAppli4
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public Bitmap bmp;
public Bitmap tBmp;
private byte[] DesKey;
private byte[] DesIV;
private void Form1_Load(object sender, EventArgs e)
{
FileStream fs;
bmp = new Bitmap("Map2.png");
fs = new FileStream("Map3.png", FileMode.Open, FileAccess.Write);
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
DesKey = des.Key;
DesIV = des.IV;
CryptoStream cs = new CryptoStream(fs, des.CreateEncryptor(DesKey, DesIV),CryptoStreamMode.Write);
bmp.Save(cs, ImageFormat.Png);
fs.Close();
cs.Close();
FileStream fs2;
fs2 = new FileStream("Map3.png", FileMode.Open, FileAccess.Read);
CryptoStream cs2 = new CryptoStream(fs2, des.CreateDecryptor(DesKey, DesIV), CryptoStreamMode.Read);
tBmp = new Bitmap(fs2);
fs2.Close();
cs2.Close();
//確認のため
tBmp.Save("x.png");
}
private void Form1_MouseClick(object sender, MouseEventArgs e)
{
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
}
}
}
