Пример #1
0
        private void addMessageButton_Click(object sender, EventArgs e)
        {
            if (AddingMessageBox.Text.Length == 0)
                return;
            var bytes = BitmapHelper.BitmapToByteRgbMarshal(picture);

            var lsb = new LsbMethod(bytes, usingBits);
            lsb.WriteLongInt(prefix);
            lsb.WriteInt(AddingMessageBox.Text.Length * 2);
            lsb.WriteString(AddingMessageBox.Text);

            BitmapHelper.ByteToBitmapRgbMarshal(picture, lsb.Data);
            pictureBox.Image = picture;

            lsb = new LsbMethod(BitmapHelper.BitmapToByteRgbMarshal(picture), usingBits);
            var readPrefix = lsb.ReadLongInt();
            if (readPrefix != prefix)
            {
                MessageBox.Show("Error occured while adding message.", "Error", MessageBoxButtons.OK,
                    MessageBoxIcon.Error);
                return;
            } 
            var readLengthMessage = lsb.ReadInt();
            var readMessage = lsb.ReadMessage(readLengthMessage);
            AddedMessageBox.Text = readMessage;
        }
Пример #2
0
        private void openButton_Click(object sender, EventArgs e)
        {
            if (openFileDialog.ShowDialog() == DialogResult.Cancel)
                return;

            AddedMessageBox.Text = String.Empty;
            AddingMessageBox.Text = String.Empty;

            picture = BitmapHelper.LoadBitmap(openFileDialog.FileName);
            pictureBox.Image = picture;

            var lsb = new LsbMethod(BitmapHelper.BitmapToByteRgbMarshal(picture), usingBits);
            var readPrefix = lsb.ReadLongInt();
            BitmapHelper.ByteToBitmapRgbMarshal(picture, lsb.Data);
            if (readPrefix != prefix)
            {
                MessageBox.Show("Added message not found.", "Information", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return;
            }
            var readLengthMessage = lsb.ReadInt();
            var readMessage = lsb.ReadMessage(readLengthMessage);
            AddedMessageBox.Text = readMessage;
        }