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| using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace TatouageImg
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void buttonOuvrir_Click(object sender, EventArgs e)
{
openFileDialog1.Filter = "Image Files (*.bmp) | *.bmp";
// afficher dans la liste Box le chemin
openFileDialog1.InitialDirectory = @"C:\ ";
if (openFileDialog1.ShowDialog() == DialogResult.OK) //Si le browser de fichier est ouvert en mode lecture (open)
{
textBoxFilePath.Text = openFileDialog1.FileName.ToString();
// afficher l'image dans la pictureBox
pictureBox1.ImageLocation = textBoxFilePath.Text;
}
}
private void buttonCrypte_Click(object sender, EventArgs e)
{
// création d'un bimap à partir de l'image
Bitmap bitmap = (Bitmap)pictureBox1.Image;
for (int i=0; i < bitmap.Width; i++)
{
for(int j=0; j < bitmap.Height; j++)
{
Color pixel = bitmap.GetPixel(i, j);
if(i<1 && j < textBoxMessage.TextLength)
{
char letter = Convert.ToChar(textBoxMessage.Text.Substring(j, 1));
int value = Convert.ToInt32(letter);
bitmap.SetPixel(i, j, Color.FromArgb(pixel.R, pixel.G, pixel.B));
}
if(i==bitmap.Width-1 && j == bitmap.Height - 1)
{
bitmap.SetPixel(i, j, Color.FromArgb(pixel.R, pixel.G, textBoxMessage.TextLength));
}
}
}
saveFileDialog1.Filter = "Image Files (*.bmp) | *.bmp";
saveFileDialog1.InitialDirectory = @"C:\ ";
if (saveFileDialog1.ShowDialog() == DialogResult.OK) //Si le browser de fichier est ouvert en mode ecriture
{
textBoxFilePath.Text = saveFileDialog1.FileName.ToString();
// afficher l'image dans la pictureBox
pictureBox1.ImageLocation = textBoxFilePath.Text;
bitmap.Save(textBoxFilePath.Text);
}
}
private void buttonDecrypter_Click(object sender, EventArgs e)
{
// création d'un bimap à partir de l'image
Bitmap bitmap = (Bitmap)pictureBox1.Image;
string message = "";
Color lastpixel = bitmap.GetPixel(bitmap.Width - 1, bitmap.Height - 1);
int msgLength = lastpixel.B;
for (int i = 0; i < bitmap.Width; i++)
{
for (int j = 0; j < bitmap.Height; j++)
{
Color pixel = bitmap.GetPixel(i, j);
if (i < 1 && j < msgLength)
{
int value = pixel.B;
char c = Convert.ToChar(value);
string letter = Encoding.UTF32.GetString(new byte[] { Convert.ToByte(c) });
//string letter = Encoding.ASCII.GetString(new byte[] { Convert.ToByte(c) });
message += letter;
}
}
}
textBoxMessage.Text = message;
}
}
} |
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