private void hideInImage(byte[,] red1, byte[,] green1, byte[,] blue1)
{
byte[,] red = red1;
int randh = 0, randw = 0;
byte[,] green = green1;
byte[,] blue = blue1;
#region hide data in image
int height = red.GetLength(0), width = red.GetLength(1);
/*Since data will be added from 5th pixel. 1st three pixels used to store
* the position of lastpixel in which data is stored
* and 4th pixel storing whether the last pixel has used all it's capacity or not
*/
long encryption = 0, hidetime;
int j = 4;
try
{
string filinter = "C:\\temp\\example\\Data\\hello.txt";
timer.Start();
f(textfile, filinter);
timer.Stop();
encryption = timer.ElapsedMilliseconds;
label7.Text = (encryption.ToString());
byte[] fileData = StreamFile(filinter);
textfile = filinter;
int len = fileData.Length;
int i;
int requiredBitsRed, requiredBitsGreen, requiredBitsBlue;
var encryptbmp = new Bitmap(width, height);
if ((len * 8 > capacity) || (width < 5))
{
throw new ImageToSmall("Image is too small to use");
}
else
{
timer.Start();
int currentByte = 0;
bool isDone = false;
int less;
byte byte_to_replace, a, b;
int offset = 0;
int pixel_row = 0, pixel_column = 0, pixel_color = 0, num_of_bits_stored = 5;
for (i = 0; i < height; i++)
{
for (; j < width; j++)
{
a = 0; b = 0;
requiredBitsRed = requiredBit(red[i, j]);
requiredBitsGreen = requiredBit(green[i, j]);
requiredBitsBlue = requiredBit(blue[i, j]);
#region replace red pixel
byte_to_replace = 0;
if (requiredBitsRed <= 8 - offset)
{
byte_to_replace = get_byte(offset, fileData[currentByte], requiredBitsRed);
offset += requiredBitsRed;
if (offset == 8)
{
offset = 0;
++currentByte;
}
if (currentByte == len)
{
pixel_row = i;
pixel_column = j;
pixel_color = 1;
num_of_bits_stored = requiredBitsRed;
isDone = true;
}
}
else if (requiredBitsRed > 8 - offset)
{
less = 8 - offset;
a = get_byte(offset, fileData[currentByte], less);
currentByte += 1;
if (currentByte == len)
{
pixel_row = i;
pixel_column = j;
pixel_color = 1;
num_of_bits_stored = less;
b = 0;
isDone = true;
}
else
{
offset = 0;
b = get_byte(offset, fileData[currentByte], requiredBitsRed - less);
offset += requiredBitsRed - less;
}
byte_to_replace = (byte)((a << requiredBitsRed - less) | b);
}
red[i, j] = (byte)(maskByte(red[i, j], requiredBitsRed) | byte_to_replace);
if (isDone)
{
break;
}
#endregion
#region replace blue pixel
byte_to_replace = 0;
if (requiredBitsBlue <= 8 - offset)
{
byte_to_replace = get_byte(offset, fileData[currentByte], requiredBitsBlue);
offset += requiredBitsBlue;
if (offset == 8)
{
offset = 0;
++currentByte;
}
if (currentByte == len)
{
pixel_row = i;
pixel_column = j;
pixel_color = 2;
num_of_bits_stored = requiredBitsBlue;
isDone = true;
}
}
else if (requiredBitsBlue > 8 - offset)
{
less = 8 - offset;
a = get_byte(offset, fileData[currentByte], less);
currentByte += 1;
if (currentByte == len)
{
pixel_row = i;
pixel_column = j;
pixel_color = 2;
num_of_bits_stored = less;
b = 0;
isDone = true;
}
else
{
offset = 0;
b = get_byte(offset, fileData[currentByte], requiredBitsBlue - less);
offset += requiredBitsBlue - less;
}
byte_to_replace = (byte)((a << requiredBitsBlue - less) | b);
}
blue[i, j] = (byte)(maskByte(blue[i, j], requiredBitsBlue) | byte_to_replace);
if (isDone)
{
break;
}
#endregion
#region replace green pixel
byte_to_replace = 0;
if (requiredBitsGreen <= 8 - offset)
{
byte_to_replace = get_byte(offset, fileData[currentByte], requiredBitsGreen);
offset += requiredBitsGreen;
if (offset == 8)
{
offset = 0;
++currentByte;
}
if (currentByte == len)
{
pixel_row = i;
pixel_column = j;
pixel_color = 3;
num_of_bits_stored = requiredBitsGreen;
isDone = true;
}
}
else if (requiredBitsGreen > 8 - offset)
{
less = 8 - offset;
a = get_byte(offset, fileData[currentByte], less);
currentByte += 1;
if (currentByte == len)
{
pixel_row = i;
pixel_column = j;
pixel_color = 3;
num_of_bits_stored = less;
b = 0;
isDone = true;
}
else
{
offset = 0;
b = get_byte(offset, fileData[currentByte], requiredBitsGreen - less);
offset += requiredBitsGreen - less;
}
byte_to_replace = (byte)((a << requiredBitsGreen - less) | b);
}
green[i, j] = (byte)(maskByte(green[i, j], requiredBitsGreen) | byte_to_replace);
if (isDone)
{
break;
}
#endregion
}
if (isDone)
{
break;
}
j = 0;
}
byte[] numb = new byte[4], Color = new byte[4], Row = new byte[4], Col = new byte[4];
if (isDone)
{
Row = BitConverter.GetBytes(pixel_row);
Col = BitConverter.GetBytes(pixel_column);
Color = BitConverter.GetBytes(pixel_color);
numb = BitConverter.GetBytes(num_of_bits_stored);
}
for (i = 0; i < 4; i++)
{
red[0, i] = Row[i];
blue[0, i] = Col[i];
}
green[0, 0] = Color[0];
green[0, 1] = Color[1];
green[0, 2] = numb[0];
green[0, 3] = numb[1];
randw = (pixel_column + 1) % (width - 1);
randh = (j == 0) ? pixel_row + 1 : pixel_row;
}
}
catch (Exception ex)
{
label4.Text = ex.Message;
}
if (randh != height)
{
j = randw;
byte randRed, randGreen, randBlue;
Random rnd = new Random();
for (i = randh; i < height; i++)
{
for (; j < width; j++)
{
int requiredBitsRed, requiredBitsGreen, requiredBitsBlue;
requiredBitsRed = requiredBit(red[i, j]);
requiredBitsGreen = requiredBit(green[i, j]);
requiredBitsBlue = requiredBit(blue[i, j]);
randRed = (byte)rnd.Next((int)Math.Pow(2, requiredBitsRed));
randBlue = (byte)rnd.Next((int)Math.Pow(2, requiredBitsBlue));
randGreen = (byte)rnd.Next((int)Math.Pow(2, requiredBitsGreen));
red[i, j] = (byte)(maskByte(red[i, j], requiredBitsRed) | maskByte(randRed, requiredBitsRed));
blue[i, j] = (byte)(maskByte(blue[i, j], requiredBitsBlue) | maskByte(randBlue, requiredBitsBlue));
green[i, j] = (byte)(maskByte(green[i, j], requiredBitsGreen) | maskByte(randGreen, requiredBitsGreen));
}
j = 0;
}
}
#endregion
timer.Stop();
hidetime = timer.ElapsedMilliseconds;
label8.Text = hidetime.ToString();
label6.Text = (encryption + hidetime).ToString();
MLApp.MLApp matlab = new MLApp.MLApp();
matlab.PutWorkspaceData("red", "base", red);
matlab.PutWorkspaceData("green", "base", green);
matlab.PutWorkspaceData("blue", "base", blue);
matlab.Execute("im = cat(3,red,blue,green)");
Console.WriteLine(matlab.Execute("imwrite(im,'C:\\temp\\example\\Data\\after2222.png')"));
label3.Text = label3.Text + "completed";
var form = new Form2("C:\\temp\\example\\Data\\after2222.png");
form.Show();
}
private void admin_Click(object sender, EventArgs e)
{
Form2 f = new Form2();
f.Show();
}
private void metroButton5_Click(object sender, EventArgs e)
{
Form2 buscar = new Form2();
buscar.Show();
}
private void dataGridView1_CellContentClick_1(object sender, DataGridViewCellEventArgs e)
{
MySql.Data.MySqlClient.MySqlConnection conn = new MySqlConnection();
string myConnectionString;
myConnectionString = "server=127.0.0.1;"
+ "uid=root;"
+ "pwd=root;"
+ "SslMode=none;"
+ "database=db";
var senderGrid = (DataGridView)sender;
if (senderGrid.Columns[e.ColumnIndex] is DataGridViewButtonColumn && e.RowIndex >= 0)
{
if (e.ColumnIndex == 0)
{
var a = new Form2();
forEdit = dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString();
forEditID = dataGridView1.Rows[e.RowIndex].Cells[4].Value.ToString();
a.Show();
}
if (e.ColumnIndex == 1)
{
DialogResult dialogResult = MessageBox.Show("Are you sure?", "Processing...;", MessageBoxButtons.YesNo);
if (dialogResult == DialogResult.No)
{
//do something else
}
if (dialogResult == DialogResult.Yes)
{
//do something
conn.ConnectionString = myConnectionString;
conn.Open();
using (MySqlConnection con = new MySqlConnection(myConnectionString))
{
using (MySqlCommand cmd = new MySqlCommand("DELETE FROM itemcontent WHERE id ='" + dataGridView1.Rows[e.RowIndex].Cells[4].Value.ToString() + "' and itemID =" + EquipmentUI.sendtext, conn))
{
cmd.CommandType = CommandType.Text;
if (cmd.ExecuteNonQuery() > 0)
{
using (MySqlConnection con1 = new MySqlConnection(myConnectionString))
{
using (MySql.Data.MySqlClient.MySqlCommand cmd1 = new MySql.Data.MySqlClient.MySqlCommand("SELECT items.id,itemcontent.modelNumber,itemcontent.id from items left join itemcontent on items.id = itemcontent.itemID where items.id =" + EquipmentUI.sendtext + " and itemcontent.tagID = 1", conn))
{
cmd1.CommandType = CommandType.Text;
using (MySqlDataAdapter sda = new MySqlDataAdapter(cmd1))
{
using (DataTable dt = new DataTable())
{
sda.Fill(dt);
dataGridView1.DefaultCellStyle.SelectionBackColor = Color.Transparent;
dataGridView1.DefaultCellStyle.SelectionForeColor = Color.Transparent;
dataGridView1.DataSource = dt;
dataGridView1.ClearSelection();
dataGridView1.Columns[2].Visible = false;
dataGridView1.Columns[4].Visible = false;
dataGridView1.Columns[3].HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter;
dataGridView1.Columns[3].HeaderCell.Value = "Name / Model Number";
dataGridView1.Columns[3].DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
dataGridView1.Columns[3].DefaultCellStyle.ForeColor = Color.Black;
dataGridView1.Columns[1].DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
dataGridView1.Columns[1].HeaderCell.Value = "";
dataGridView1.Columns[1].Width = 50;
dataGridView1.Columns[0].DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
dataGridView1.Columns[0].HeaderCell.Value = "";
dataGridView1.Columns[0].Width = 50;
dataGridView1.Columns[3].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
MessageBox.Show("Successful!", "Successful ",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
}
}
}
}
}
}
conn.Close();
}
}
}
private void button3_Click(object sender, EventArgs e)
{
var alph = new Form2();
alph.Show();
}
private void button2_Click(object sender, EventArgs e)
{
Form2 F = new Form2(arr, i);
F.Show();
}
