Kasse

Kasse/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
+	<classpathentry combineaccessrules="false" exported="true" kind="src" path="/SQLHelper"/>
+	<classpathentry kind="lib" path="mysql-connector-java-5.1.37-bin.jar"/>
+	<classpathentry kind="lib" path="miglayout15-swing.jar" sourcepath="miglayout-src.zip"/>
+	<classpathentry combineaccessrules="false" kind="src" path="/jBCrypt"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

Kasse/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Sven Kasse Aktuell</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

Kasse/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,11 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.8

Kasse/src/BorderInformation.java

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+public class BorderInformation {
+	// Randstärke in Pixeln
+	public float BorderWidth;
+	// Erstes schwarzes Pixel in der linken oberen Ecke
+	public Pair firstBlackPixel;
+	
+	public BorderInformation(float width, Pair firstBlack) {
+		BorderWidth = width;
+		firstBlackPixel = firstBlack;
+	}
+}

Kasse/src/Helper.java

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+import java.sql.*;
+import java.util.concurrent.SynchronousQueue;
+
+import javax.swing.table.DefaultTableModel;
+
+public class Helper {
+
+	Connection con;
+	Statement stmt;
+	ResultSet rs;
+	ResultSetMetaData rsmd;
+
+	//baut verbindung auf
+	public void connect() {
+		try {
+			con = DriverManager.getConnection("jdbc:mysql://102-012/", "intabi19", "hallo");
+			System.out.println("connected");
+		} catch (SQLException e) {
+			System.out.println(e);
+		}
+	}
+	
+	//baut verbindung auf zur Auswahl 
+	public void connect(String databaseName) {
+		try {
+			con = DriverManager.getConnection("jdbc:mysql://102-012/"+ databaseName, "intabi19", "hallo");
+			System.out.println("connected");
+		} catch (SQLException e) {
+			System.out.println(e);
+		}
+	}
+
+	public void listTables()
+	{
+		try {
+			rs = con.getMetaData().getTables(null, null, null, null);
+			while (rs.next())
+			{
+				System.out.println(rs.getString(3));
+			}
+		} catch (SQLException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+	}
+	public void passSQL(String sql)
+	{
+		try {
+			stmt = con.createStatement();
+			stmt.execute(sql);
+		} catch (SQLException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+	}
+	
+	public DefaultTableModel getTableModel(String sqlString) {
+		DefaultTableModel model = new DefaultTableModel();
+
+		try {
+			// wichtig nicht vergessen ohne diese Aussage gibts nen Fehler(Nullpointer)
+			stmt = con.createStatement();
+			// schickt SQL Abfrage ab und speichert im Objekt rs
+			rs = stmt.executeQuery(sqlString);
+			// liest MetaDaten aus und speichert im Objekt rsmd
+			rsmd = rs.getMetaData();
+			// Breite der Tabelle
+			int colCount = rsmd.getColumnCount();
+
+			// Ein String Array hat die Länge der Breite der Tabelle
+			String colData[] = new String[colCount];
+			// Läuft einmal die Breite ab und fügt die Spaltennamen zum Array hinzu
+			for (int i = 1; i <= colCount; i++) {
+				colData[i - 1] = rsmd.getColumnLabel(i);
+			}
+			// setzt die Spaltennamen im DefaultTableModel
+			model.setColumnIdentifiers(colData);
+			
+			// Ein String Array hat die Länge der Breite der Tabelle 
+			String rowData[] = new String[colCount];
+			//Läuft solange es noch weitere Zeilen im rs gibt
+			while (rs.next()) {
+				// Läuft jede Spalte ab
+				for (int i = 0; i < colCount; i++) {
+					//trägt Werte der spalte in den Array ein überschreibt vorherige Werte
+					rowData[i] = rs.getString(i+1);
+				}
+				// fügt komplette Zeile dem DefaultTableModel hinzu
+				model.addRow(rowData);
+			}
+		} catch (SQLException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+		//gibt fertiges DefaultTableModel zurück
+		return model;
+	}
+}

Kasse/src/MainFrame.java

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+import java.awt.BorderLayout;
+import java.awt.EventQueue;
+
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+import javax.swing.border.EmptyBorder;
+import javax.swing.JMenuBar;
+import javax.swing.JOptionPane;
+import javax.swing.JMenu;
+import javax.swing.DefaultListSelectionModel;
+import javax.swing.JButton;
+import javax.swing.JComboBox;
+import javax.swing.JFileChooser;
+import javax.swing.JScrollPane;
+import javax.swing.JTextField;
+import javax.swing.ListSelectionModel;
+import javax.swing.JLabel;
+import java.awt.Font;
+import java.awt.Label;
+
+import javax.swing.JTextArea;
+import java.awt.Color;
+import java.awt.Component;
+
+import javax.swing.JProgressBar;
+import javax.swing.JList;
+import javax.swing.JTabbedPane;
+import javax.swing.JTable;
+import javax.swing.border.LineBorder;
+import javax.swing.event.ListSelectionEvent;
+import javax.swing.event.ListSelectionListener;
+import javax.swing.table.DefaultTableModel;
+import javax.swing.table.TableModel;
+
+import lib.SQLConnection;
+
+import javax.swing.JPasswordField;
+import java.awt.event.ActionListener;
+import java.awt.event.ComponentEvent;
+import java.awt.event.ComponentListener;
+import java.awt.event.ActionEvent;
+import javax.swing.SwingConstants;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.io.File;
+import java.io.IOException;
+import java.sql.SQLException;
+import java.time.LocalDate;
+import java.time.temporal.IsoFields;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.HashMap;
+
+import javax.swing.event.CaretListener;
+import javax.swing.event.CaretEvent;
+import java.awt.GridBagLayout;
+import java.awt.GridBagConstraints;
+import net.miginfocom.swing.MigLayout;
+import javax.swing.JTextPane;
+
+public class MainFrame extends JFrame {
+
+	private JPanel contentPane;
+	private JTextField textField;
+	private JTextField textField_1;
+	private JTable table;
+	private JTextField textField_2;
+	private JTextField textField_3;
+	private JPasswordField textField_4;
+	private JTable table_2;
+	private float Preis = 0.0F;
+	DefaultTableModel model;
+	JScrollPane scrollPane_1 = new JScrollPane();
+	private JTextField txtProduktID;
+	private JTextField txtProduktName;
+	private JTextField txtPreis;
+	JScrollPane scrollPane = new JScrollPane();
+
+	JTextArea textArea_AX = new JTextArea();
+	JTextArea textArea_BX = new JTextArea();
+	JTextArea textArea_CX = new JTextArea();
+	JTextArea textArea_AY = new JTextArea();
+	JTextArea textArea_BY = new JTextArea();
+	JTextArea textArea_CY = new JTextArea();
+	JTextArea textArea_AZ = new JTextArea();
+	JTextArea textArea_BZ = new JTextArea();
+	JTextArea textArea_CZ = new JTextArea();
+	
+	JFrame _this = this;
+
+	/**
+	 * Launch the application.
+	 */
+	public static void main(String[] args) {
+		EventQueue.invokeLater(new Runnable() {
+			public void run() {
+				try {
+					MainFrame frame = new MainFrame();
+					frame.setVisible(true);
+				} catch (Exception e) {
+					e.printStackTrace();
+				}
+			}
+		});
+	}
+
+	/**
+	 * Create the frame.
+	 */
+	public MainFrame() {
+		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		setBounds(100, 100, 882, 623);
+		contentPane = new JPanel();
+		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
+		setContentPane(contentPane);
+		contentPane.setLayout(null);
+		
+		SQLConnection db = new SQLConnection();
+
+		JTabbedPane tabbedPane = new JTabbedPane(JTabbedPane.TOP);
+		tabbedPane.addMouseListener(new MouseAdapter() {
+			@Override
+			public void mouseClicked(MouseEvent arg0) {
+				textArea_AX.setText("");
+				textArea_BX.setText("");
+				textArea_CX.setText("");
+				textArea_AY.setText("");
+				textArea_BY.setText("");
+				textArea_CY.setText("");
+				textArea_AZ.setText("");
+				textArea_BZ.setText("");
+				textArea_CZ.setText("");
+				
+				if (tabbedPane.getSelectedIndex() != 2)
+					return;
+
+				// ABC-Analyse ausführen
+				SQLConnection db = new SQLConnection("102-012/sven");
+				
+				
+				HashMap<Integer, Float> abcxyz = new HashMap<>();
+
+				ArrayList<HashMap<String, String>> produkte = db.queryToMap("SELECT ID FROM t_artikel");
+				for (HashMap<String, String> produkt : produkte) {
+					int produktID = Integer.parseInt(produkt.get("ID"));
+
+					Float verkauf = 0f;
+
+					ArrayList<HashMap<String, String>> verkaufswerte = db.queryToMap(
+							"SELECT Menge, Verkaufspreis, Woche FROM t_statistik WHERE f_Artikel_ID = " + produktID);
+
+					for (HashMap<String, String> wert : verkaufswerte) {
+						float summe = Integer.parseInt(wert.get("Menge")) * Float.parseFloat(wert.get("Verkaufspreis"));
+						verkauf += summe;
+					}
+
+					abcxyz.put(produktID, verkauf);
+				}
+
+				//
+				// Funtkion implementieren ids durch namern ersetzen
+				//
+
+				ArrayList<Integer> sortiert = new ArrayList<>(abcxyz.keySet());
+				sortiert.sort((a, b) -> Float.compare(abcxyz.get(b), abcxyz.get(a)));
+
+				// Gesamtumsatz errechnen
+				float gesamtUmsatz = 0;
+
+				for (int i = 0; i < abcxyz.keySet().size(); i++) {
+					gesamtUmsatz += abcxyz.get(abcxyz.keySet().toArray()[i]);
+				}
+
+				System.out.println(gesamtUmsatz);
+				
+				// Prozentualen Anteil für jedes Produkt ausrechnen
+				HashMap<Integer, Float> prozentualerAnteil = new HashMap<>();
+
+				for (int i = 0; i < abcxyz.keySet().size(); i++) {
+					Float ant = abcxyz.get(abcxyz.keySet().toArray()[i]).floatValue() / gesamtUmsatz;
+					prozentualerAnteil.put((Integer) abcxyz.keySet().toArray()[i], ant);
+				}
+				
+				/*int AlleProdukte = 50;
+				int[] VerkaufteMenge = new int[AlleProdukte];
+				ArrayList<HashMap<String, String>> Verkaufte_Artikel;
+				
+				/*for(int i = 0; i < Verkaufte_Artikel.size(); i++)
+				{
+					//VerkaufteMenge += Integer.parseInt(Verkaufte_Artikel.get(i).get("Menge"));
+				}//
+				
+				
+				int ProduktMenge = 0;
+				float[] Verkauft_Durchschnitt = new float[AlleProdukte];
+				
+				for(int i = 1; i < AlleProdukte; i++)
+				{
+					ArrayList<HashMap<String, String>> Artikel_sortiert = db.queryToMap("SELECT * FROM `t_statistik` WHERE `f_Artikel_ID` =  " + i);
+					if(Artikel_sortiert.size() > 0)
+					{
+						ProduktMenge++;
+					}
+				}
+				
+				VerkaufteMenge / ProduktMenge;
+				
+				*/
+
+				int wochen = 48;
+				
+				HashMap<Integer, Double> Varianzkoeffizienten = new HashMap<>();
+				
+				for (HashMap<String, String> produkt : produkte) {
+					int produktID = Integer.parseInt(produkt.get("ID"));
+					
+					ArrayList<HashMap<String, String>> verkauf = db.queryToMap("SELECT * FROM t_statistik WHERE f_Artikel_ID = " + produktID + " AND Woche <= 48");
+					
+					double summeVerkaufteMenge = 0;
+					
+					for (HashMap<String, String> elem : verkauf) {
+						summeVerkaufteMenge += Double.parseDouble(elem.get("Menge"));
+					}
+					
+					double Erwartungswert = summeVerkaufteMenge / wochen;
+					
+					double summeStichproben = 0;
+					
+					for (HashMap<String, String> elem : verkauf) {
+						double menge = Double.parseDouble(elem.get("Menge"));
+						summeStichproben += Math.pow(menge - Erwartungswert, 2);
+					}
+					
+					double Standardabweichung = Math.sqrt(summeStichproben / wochen);
+					
+					Varianzkoeffizienten.put(produktID, Standardabweichung / Erwartungswert);
+				}
+
+				// Auswerten
+				double valABC = 0;
+				double valXYZ = 0;
+				for (Integer produktID : prozentualerAnteil.keySet()) {
+					
+					valABC += prozentualerAnteil.get(produktID);
+					valXYZ = Varianzkoeffizienten.get(produktID);
+					
+					String name = db.queryToMap("SELECT Name FROM t_artikel WHERE ID = " + produktID).get(0).get("Name");
+					
+					if (valABC <= 0.8f) {
+						if (valXYZ <= 0.5) {
+							textArea_AX.append(name + "\n");
+						} else if (valXYZ <= 1.1) {
+							textArea_AY.append(name + "\n");
+						} else {
+							textArea_AZ.append(name + "\n");
+						}
+					} else if (valABC > 0.8f && valABC <= 0.9) {
+						if (valXYZ <= 0.5) {
+							textArea_BX.append(name + "\n");
+						} else if (valXYZ <= 1.1) {
+							textArea_BY.append(name + "\n");
+						} else {
+							textArea_BZ.append(name + "\n");
+						}
+					} else {
+						if (valXYZ <= 0.5) {
+							textArea_CX.append(name + "\n");
+						} else if (valXYZ <= 1.1) {
+							textArea_CY.append(name + "\n");
+						} else {
+							textArea_CZ.append(name + "\n");
+						}
+					}
+				}
+				
+			}
+		});
+		tabbedPane.setBounds(10, 11, 846, 563);
+		contentPane.add(tabbedPane);
+
+		String comboBoxWoche[] = { "Woche", "1", "2", "3", "4", };
+
+		String a = "Januar";
+		String b = "Februar";
+		String c = "März";
+		String d = "April";
+		String e = "Mai";
+		String f = "Juni";
+		String g = "Juli";
+		String o = "August";
+		String i = "September";
+		String j = "Oktober";
+		String k = "November";
+		String l = "Dezember";
+
+		String comboBoxMonate[] = { "Monat", a, b, c, d, e, f, g, o, i, j, k, l, };
+		Helper h = new Helper();
+		h.connect("sven");
+
+		JPanel panel_1 = new JPanel();
+		tabbedPane.addTab("   Anmelden / Abmelden   ", null, panel_1, null);
+		panel_1.setLayout(null);
+
+		JLabel lblBenutzername = new JLabel("Benutzername:");
+		lblBenutzername.setBounds(123, 134, 93, 14);
+		panel_1.add(lblBenutzername);
+
+		textField_1 = new JTextField();
+		textField_1.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent arg0) {
+
+				Helper g = new Helper();
+				g.connect("sven");
+
+				String SQL = "SELECT Name FROM `t_benutzer` WHERE Name = '" + textField_1.getText() + "'";
+
+				DefaultTableModel model = g.getTableModel(SQL);
+				if (model.getRowCount() == 1) {
+					textField_4.setEnabled(true);
+				}
+			}
+		});
+		textField_1.setBounds(226, 131, 110, 20);
+		panel_1.add(textField_1);
+		textField_1.setColumns(10);
+
+		JLabel lblPasswort = new JLabel("Passwort:");
+		lblPasswort.setBounds(149, 159, 67, 14);
+		panel_1.add(lblPasswort);
+
+		JButton btnBesttigen = new JButton("Best\u00E4tigen");
+		btnBesttigen.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				
+				
+				Helper g = new Helper();
+				g.connect("sven");
+				String SQL = "SELECT Passwort FROM `t_benutzer` WHERE Name = '" + textField_1.getText() + "'";
+				
+				DefaultTableModel model = g.getTableModel(SQL);
+				if(model.getRowCount() == 1) {
+				String hash = model.getValueAt(0, 0).toString();
+				  
+				// BCrypt Format Backport. Versionen Prefix Änderung
+				if(hash.toCharArray()[2] == 'y') {
+					char[] hashArray = hash.toCharArray();
+					hashArray[2] = 'a';
+					hash = String.valueOf(hashArray);
+				}
+				
+				// wenn der gehashte Wert in der Datenbank mit dem textArea_BX.append(prozentualerAnteil.get(prozentualerAnteil.keySet().toArray()[i]).toString() + "\n");
+				  
+				if(org.mindrot.BCrypt.checkpw(String.valueOf(textField_4.getPassword()), hash)) {
+					tabbedPane.setVisible(true);
+					  
+					tabbedPane.setEnabledAt(1, true);
+					tabbedPane.setEnabledAt(2, true);
+					tabbedPane.setSelectedIndex(1);
+					}
+				}
+						 
+			}
+		});
+		btnBesttigen.setBounds(123, 193, 213, 47);
+		panel_1.add(btnBesttigen);
+
+		textField_4 = new JPasswordField();
+		textField_4.setEnabled(false);
+		textField_4.setColumns(10);
+		textField_4.setBounds(226, 162, 110, 20);
+		panel_1.add(textField_4);
+		model = new DefaultTableModel();
+		model.setColumnIdentifiers(new String[] { "ID", "Menge", "Preis", "SVEN Bon" });
+
+		JPanel panel = new JPanel();
+		tabbedPane.addTab("   Kasse   ", null, panel, null);
+		tabbedPane.setEnabledAt(1, false);
+
+		JLabel label = new JLabel("0,00\u20AC");
+		label.setBounds(571, 38, 142, 14);
+		panel.add(label);
+
+		JButton btnTotal = new JButton("Bezahlen");
+		btnTotal.setBounds(525, 424, 188, 82);
+		btnTotal.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				int rowCount = model.getRowCount();
+
+				String Woche = textField_3.getText();
+				
+				if (Woche.isEmpty() == false) {
+
+					for (int r = 0; r < rowCount; r++) {
+						String ProduktID = (String) model.getValueAt(r, 0);
+						String Menge = (String) model.getValueAt(r, 1);
+						String Einzelpreis = (String) model.getValueAt(r, 2);
+						
+						db.execute("INSERT INTO t_statistik (`ID`, `f_Artikel_ID`, `Woche`, `Menge`, `Verkaufspreis`) VALUES (NULL, '" + ProduktID + "', '" + Woche + "', '" + Menge + "', '" + Einzelpreis + "')");
+					}
+					
+					textField_2.setText("");
+					txtPreis.setText("");
+					txtProduktID.setText("");
+					txtProduktName.setText("");
+
+					model = new DefaultTableModel();
+					model.setColumnIdentifiers(new String[] { "ID", "Menge", "Preis", "SVEN Bon" });
+					table_2.setModel(model);
+					label.setText("0,00 €");
+					Preis = 0;
+				}
+			}
+		});
+		panel.setLayout(null);
+		btnTotal.setFont(new Font("Tahoma", Font.PLAIN, 12));
+		panel.add(btnTotal);
+
+		JButton button_1 = new JButton("3");
+		button_1.setBounds(607, 372, 41, 41);
+		button_1.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textField_2.setText(textField_2.getText() + "3");
+			}
+		});
+
+		JButton button_2 = new JButton("6");
+		button_2.setBounds(607, 332, 41, 41);
+		button_2.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textField_2.setText(textField_2.getText() + "6");
+			}
+		});
+		panel.add(button_2);
+
+		JButton btnDel = new JButton("DEL");
+		btnDel.setBounds(648, 291, 65, 41);
+		btnDel.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				String text = textField_2.getText();
+				textField_2.setText(text.substring(0, text.length() - 1));
+			}
+		});
+		btnDel.setFont(new Font("Tahoma", Font.PLAIN, 12));
+		btnDel.setForeground(Color.RED);
+		panel.add(btnDel);
+
+		JButton button_3 = new JButton("9");
+		button_3.setBounds(607, 292, 41, 41);
+		button_3.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textField_2.setText(textField_2.getText() + "9");
+			}
+		});
+		panel.add(button_3);
+
+		JButton button_5 = new JButton("2");
+		button_5.setBounds(566, 372, 41, 41);
+		button_5.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textField_2.setText(textField_2.getText() + "2");
+			}
+		});
+		panel.add(button_5);
+
+		JButton button_6 = new JButton("5");
+		button_6.setBounds(566, 332, 41, 41);
+		button_6.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textField_2.setText(textField_2.getText() + "5");
+			}
+		});
+		panel.add(button_6);
+
+		JButton button_7 = new JButton("8");
+		button_7.setBounds(566, 292, 41, 41);
+		button_7.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textField_2.setText(textField_2.getText() + "8");
+			}
+		});
+		panel.add(button_7);
+
+		JButton button_8 = new JButton("0");
+		button_8.setBounds(648, 372, 65, 41);
+		button_8.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent arg0) {
+				textField_2.setText(textField_2.getText() + "0");
+			}
+		});
+		panel.add(button_8);
+
+		JButton button_9 = new JButton("1");
+		button_9.setBounds(525, 372, 41, 41);
+		button_9.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textField_2.setText(textField_2.getText() + "1");
+			}
+		});
+		panel.add(button_9);
+
+		JButton button_10 = new JButton("4");
+		button_10.setBounds(525, 332, 41, 41);
+		button_10.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textField_2.setText(textField_2.getText() + "4");
+			}
+		});
+		panel.add(button_10);
+
+		JButton button_11 = new JButton("7");
+		button_11.setBounds(525, 292, 41, 41);
+		button_11.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textField_2.setText(textField_2.getText() + "7");
+			}
+		});
+		panel.add(button_11);
+
+		JButton btnAbbruch = new JButton("Abbruch");
+		btnAbbruch.setBounds(443, 291, 82, 41);
+		btnAbbruch.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textField_2.setText("");
+				txtPreis.setText("");
+				txtProduktID.setText("");
+				txtProduktName.setText("");
+
+				model = new DefaultTableModel();
+				model.setColumnIdentifiers(new String[] { "ID", "Menge", "Preis", "SVEN Bon" });
+				table_2.setModel(model);
+				label.setText("0,00 €");
+				Preis = 0;
+			}
+		});
+		btnAbbruch.setFont(new Font("Tahoma", Font.PLAIN, 12));
+		panel.add(btnAbbruch);
+
+		textField = new JTextField();
+		textField.addCaretListener(new CaretListener() {
+			public void caretUpdate(CaretEvent arg0) {
+				String Suchen = textField.getText();
+
+				if (Suchen.equals("")) {
+					table = new JTable();
+					Helper h = new Helper();
+					h.connect("sven");
+					table.setModel(h.getTableModel("SELECT ID, Name, Marke, Verkaufspreis FROM t_artikel"));
+					scrollPane.setViewportView(table);
+
+				} else {
+					table = new JTable();
+					Helper g = new Helper();
+					g.connect("sven");
+
+					String SQL = "SELECT ID, Name, Marke, Verkaufspreis FROM `t_artikel` WHERE Name LIKE '" + Suchen
+							+ "%' ";
+
+					table.setModel(g.getTableModel(SQL));
+					scrollPane.setViewportView(table);
+				}
+
+				table.getColumnModel().getColumn(0).setPreferredWidth(25);
+
+				table.getSelectionModel().addListSelectionListener(new ListSelectionListener() {
+					@Override
+					public void valueChanged(ListSelectionEvent e) {
+
+						if (e.getValueIsAdjusting() == false) {
+
+							txtProduktID.setText((String) table.getModel().getValueAt(table.getSelectedRow(), 0));
+
+							txtProduktName.setText((String) table.getModel().getValueAt(table.getSelectedRow(), 1));
+
+							float preis = Float.parseFloat((String) table.getModel().getValueAt(table.getSelectedRow(), 3));
+							
+							txtPreis.setText(String.format("%.2f €", preis));
+						}
+					}
+				});
+			}
+		});
+		textField.setBounds(10, 11, 423, 20);
+		panel.add(textField);
+		textField.setColumns(10);
+
+		JLabel lblBetrag = new JLabel("Betrag:");
+		lblBetrag.setBounds(525, 38, 60, 14);
+		panel.add(lblBetrag);
+
+		JComboBox Woche = new JComboBox(comboBoxWoche);
+		Woche.setBounds(505, 11, 80, 20);
+		panel.add(Woche);
+
+		JComboBox Monate = new JComboBox(comboBoxMonate);
+		Monate.setBounds(583, 11, 133, 20);
+		panel.add(Monate);
+
+		JButton btnKw = new JButton("KW");
+		btnKw.setBounds(716, 11, 55, 20);
+		btnKw.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent arg0) {
+				int p;
+				String w = (String) Woche.getSelectedItem();
+				p = Integer.valueOf(w);
+				String m = (String) Monate.getSelectedItem();
+				int n = 0;
+				if (m.equals(a)) {
+					n = 1;
+				}
+				if (m.equals(b)) {
+					n = 2;
+				}
+				if (m.equals(c)) {
+					n = 3;
+				}
+				if (m.equals(d)) {
+					n = 4;
+				}
+				if (m.equals(e)) {
+					n = 5;
+				}
+				if (m.equals(f)) {
+					n = 6;
+				}
+				if (m.equals(g)) {
+					n = 7;
+				}
+				if (m.equals(o)) {
+					n = 8;
+				}
+				if (m.equals(i)) {
+					n = 9;
+				}
+				if (m.equals(j)) {
+					n = 10;
+				}
+				if (m.equals(k)) {
+					n = 11;
+				}
+				if (m.equals(l)) {
+					n = 12;
+				}
+				int k;
+				k = (p + ((n - 1) * 4));
+				String q;
+				q = String.valueOf(k);
+				textField_3.setText(q);
+			}
+		});
+		panel.add(btnKw);
+
+		scrollPane.setBounds(10, 36, 423, 375);
+		panel.add(scrollPane);
+
+		panel.add(button_1);
+
+		JButton btnEnter = new JButton("Enter");
+		btnEnter.setBounds(648, 331, 65, 41);
+		btnEnter.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+
+				int Menge = Integer.parseInt(textField_2.getText());
+				
+				float Einzelpreis = Float.valueOf(txtPreis.getText().replace("€", "").replace(",", "."));
+
+				float Summe = Menge * Einzelpreis;
+
+				Preis += Summe;
+				label.setText(String.format("%.2f €", Preis));
+
+				model.addRow(new String[] { txtProduktID.getText(), Menge + "", Einzelpreis + "", Summe + " €" });
+
+				textField_2.setText("");
+				txtPreis.setText("");
+				txtProduktID.setText("");
+				txtProduktName.setText("");
+
+				
+				
+			}
+		});
+		btnEnter.setFont(new Font("Tahoma", Font.PLAIN, 12));
+		btnEnter.setForeground(Color.GREEN);
+		panel.add(btnEnter);
+
+		scrollPane_1.setBounds(505, 51, 208, 193);
+		panel.add(scrollPane_1);
+
+		table_2 = new JTable();
+		table_2.setModel(model);
+		table_2.getColumnModel().getColumn(0).setPreferredWidth(20);
+		scrollPane_1.setViewportView(table_2);
+
+		JButton btnQrcodeScannen = new JButton("QR-Code");
+		btnQrcodeScannen.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent arg0) {
+				// JFileChooser erstellen
+				JFileChooser fc = new JFileChooser();
+				fc.setCurrentDirectory(new File("T:/INTABI19/Projekt/ELMO Interactive Toolbox/rec"));
+				
+				// Wenn im Dialog nicht OK gedrückt wurde, Methode verlassen
+				if (fc.showOpenDialog(_this) != JFileChooser.APPROVE_OPTION)
+					return;
+				
+				// Ausgewählte Datei auslesen
+				File f = fc.getSelectedFile();
+					
+				// Ausgelesener Wert
+				int value = -1;
+				
+				// Versuche, den QR-Code einzulesen
+				// Wenn das nicht geht, wird eine Fehlermeldung ausgegeben
+				try {
+					value = SvenQR.ReadQR(f.getAbsolutePath());
+				} catch (IOException e1) {
+					JOptionPane.showMessageDialog(_this, "QR-Code konnte nicht eingelesen werden: " + e1.getMessage());
+					return;
+				}
+				
+				int Menge = 1;
+
+				Helper g = new Helper();
+				g.connect("sven");
+				String SQL = "SELECT Verkaufspreis FROM `t_artikel` WHERE QR = " + value;	
+				
+				DefaultTableModel _model = g.getTableModel(SQL);
+				
+				if (_model.getRowCount() != 1) {
+					JOptionPane.showMessageDialog(_this, "QR-Code konnte nicht zugeordnet werden.");
+					return;
+				}
+				
+				float Einzelpreis = Float.valueOf(_model.getValueAt(0, 0).toString());
+				float Summe = Menge * Einzelpreis;
+				
+				Preis += Summe;
+				label.setText(String.format("%.2f €", Preis));
+
+				model.addRow(new String[] { GetProductIDFromQRCode(value), Menge + "", Einzelpreis + "", Summe + " €" });
+			}
+		});
+		btnQrcodeScannen.setBounds(443, 331, 82, 82);
+		btnQrcodeScannen.setFont(new Font("Trebuchet MS", Font.PLAIN, 12));
+		panel.add(btnQrcodeScannen);
+
+		textField_2 = new JTextField();
+		textField_2.setBounds(505, 271, 103, 20);
+		textField_2.setColumns(10);
+		panel.add(textField_2);
+
+		textField_3 = new JTextField();
+		textField_3.setBounds(771, 11, 60, 20);
+		panel.add(textField_3);
+		textField_3.setColumns(10);
+
+		txtProduktID = new JTextField();
+		txtProduktID.setEditable(false);
+		txtProduktID.setBounds(505, 248, 61, 20);
+		panel.add(txtProduktID);
+		txtProduktID.setColumns(10);
+
+		txtProduktName = new JTextField();
+		txtProduktName.setEditable(false);
+		txtProduktName.setBounds(566, 248, 147, 20);
+		panel.add(txtProduktName);
+		txtProduktName.setColumns(10);
+
+		txtPreis = new JTextField();
+		txtPreis.setEditable(false);
+		txtPreis.setBounds(607, 271, 106, 20);
+		panel.add(txtPreis);
+		txtPreis.setColumns(10);
+
+		textField.setText("4");
+		textField.setText("");
+
+		JPanel panel_2 = new JPanel();
+		tabbedPane.addTab("   ABC- / XYZ-Analyse   ", null, panel_2, null);
+		tabbedPane.setEnabledAt(2, false);
+		panel_2.setLayout(new MigLayout("", "[][grow][grow][grow]", "[][grow][grow][grow]"));
+
+		JPanel panel_3 = new JPanel();
+		panel_2.add(panel_3, "cell 1 0,grow");
+		panel_3.setLayout(new BorderLayout(0, 0));
+
+		JLabel lblA = new JLabel("A");
+		lblA.setFont(new Font("Tahoma", Font.BOLD, 18));
+		lblA.setHorizontalAlignment(SwingConstants.CENTER);
+		panel_3.add(lblA, BorderLayout.CENTER);
+
+		JPanel panel_4 = new JPanel();
+		panel_2.add(panel_4, "cell 2 0,grow");
+		panel_4.setLayout(new BorderLayout(0, 0));
+
+		JLabel lblB = new JLabel("B");
+		lblB.setHorizontalAlignment(SwingConstants.CENTER);
+		lblB.setFont(new Font("Tahoma", Font.BOLD, 18));
+		panel_4.add(lblB, BorderLayout.CENTER);
+
+		JPanel panel_5 = new JPanel();
+		panel_2.add(panel_5, "cell 3 0,grow");
+		panel_5.setLayout(new BorderLayout(0, 0));
+
+		JLabel lblNewLabel = new JLabel("C");
+		lblNewLabel.setHorizontalAlignment(SwingConstants.CENTER);
+		lblNewLabel.setFont(new Font("Tahoma", Font.BOLD, 18));
+		panel_5.add(lblNewLabel, BorderLayout.CENTER);
+
+		JPanel panel_6 = new JPanel();
+		panel_2.add(panel_6, "cell 0 1,grow");
+		panel_6.setLayout(new BorderLayout(0, 0));
+
+		JLabel lblX = new JLabel("X");
+		lblX.setHorizontalAlignment(SwingConstants.CENTER);
+		lblX.setFont(new Font("Tahoma", Font.BOLD, 18));
+		panel_6.add(lblX, BorderLayout.CENTER);
+
+		JScrollPane scrollPane_2 = new JScrollPane();
+		panel_2.add(scrollPane_2, "cell 1 1,grow");
+		textArea_AX.setEditable(false);
+		textArea_AX.setWrapStyleWord(true);
+		scrollPane_2.setViewportView(textArea_AX);
+
+		JScrollPane scrollPane_3 = new JScrollPane();
+		panel_2.add(scrollPane_3, "cell 2 1,grow");
+
+		
+		textArea_BX.setWrapStyleWord(true);
+		textArea_BX.setEditable(false);
+		scrollPane_3.setViewportView(textArea_BX);
+
+		JScrollPane scrollPane_4 = new JScrollPane();
+		panel_2.add(scrollPane_4, "cell 3 1,grow");
+
+		
+		textArea_CX.setWrapStyleWord(true);
+		textArea_CX.setEditable(false);
+		scrollPane_4.setViewportView(textArea_CX);
+
+		JPanel panel_7 = new JPanel();
+		panel_2.add(panel_7, "cell 0 2,grow");
+		panel_7.setLayout(new BorderLayout(0, 0));
+
+		JLabel lblY = new JLabel("Y");
+		lblY.setHorizontalAlignment(SwingConstants.CENTER);
+		lblY.setFont(new Font("Tahoma", Font.BOLD, 18));
+		panel_7.add(lblY, BorderLayout.CENTER);
+
+		JScrollPane scrollPane_5 = new JScrollPane();
+		panel_2.add(scrollPane_5, "cell 1 2,grow");
+
+		textArea_AY.setWrapStyleWord(true);
+		textArea_AY.setEditable(false);
+		scrollPane_5.setViewportView(textArea_AY);
+
+		JScrollPane scrollPane_6 = new JScrollPane();
+		panel_2.add(scrollPane_6, "cell 2 2,grow");
+
+		textArea_BY.setWrapStyleWord(true);
+		textArea_BY.setEditable(false);
+		scrollPane_6.setViewportView(textArea_BY);
+
+		JScrollPane scrollPane_7 = new JScrollPane();
+		panel_2.add(scrollPane_7, "cell 3 2,grow");
+
+		textArea_CY.setWrapStyleWord(true);
+		textArea_CY.setEditable(false);
+		scrollPane_7.setViewportView(textArea_CY);
+
+		JPanel panel_8 = new JPanel();
+		panel_2.add(panel_8, "cell 0 3,grow");
+		panel_8.setLayout(new BorderLayout(0, 0));
+
+		JLabel lblZ = new JLabel("Z");
+		lblZ.setHorizontalAlignment(SwingConstants.CENTER);
+		lblZ.setFont(new Font("Tahoma", Font.BOLD, 18));
+		panel_8.add(lblZ, BorderLayout.CENTER);
+
+		JScrollPane scrollPane_8 = new JScrollPane();
+		panel_2.add(scrollPane_8, "cell 1 3,grow");
+
+		textArea_AZ.setWrapStyleWord(true);
+		textArea_AZ.setEditable(false);
+		scrollPane_8.setViewportView(textArea_AZ);
+
+		JScrollPane scrollPane_9 = new JScrollPane();
+		panel_2.add(scrollPane_9, "cell 2 3,grow");
+
+		textArea_BZ.setWrapStyleWord(true);
+		textArea_BZ.setEditable(false);
+		scrollPane_9.setViewportView(textArea_BZ);
+
+		JScrollPane scrollPane_10 = new JScrollPane();
+		panel_2.add(scrollPane_10, "cell 3 3,grow");
+
+		textArea_CZ.setWrapStyleWord(true);
+		textArea_CZ.setEditable(false);
+		scrollPane_10.setViewportView(textArea_CZ);
+
+	}
+
+	private String GetProductIDFromQRCode(int value) {
+		Helper g = new Helper();
+		g.connect("sven");
+		String SQL = "SELECT ID FROM `t_artikel` WHERE QR = " + value;	
+		
+		DefaultTableModel model = g.getTableModel(SQL);
+		
+		if (model.getRowCount() != 1) {
+			JOptionPane.showMessageDialog(_this, "QR-Code konnte nicht zugeordnet werden.");
+			return "";
+		}
+
+		return String.valueOf(model.getValueAt(0, 0));
+	}
+}

Kasse/src/Pair.java

@@ -0,0 +1,15 @@
+public class Pair {
+	public int x, y;
+
+	public Pair(int _x, int _y) {
+		x = _x;
+		y = _y;
+	}
+	
+	// Kopierkonstruktor, da eine Zuweisung nicht die Werte kopiert,
+	// sondern beide Variablen auf den gleichen Speicher zeigen lässt.
+	public Pair(Pair copy) {
+		x = copy.x;
+		y = copy.y;
+	}
+}

Kasse/src/PrintActionListener.java

@@ -0,0 +1,71 @@
+import java.awt.Graphics;
+import java.awt.image.BufferedImage;
+import java.awt.print.PageFormat;
+import java.awt.print.Printable;
+import java.awt.print.PrinterException;
+import java.awt.print.PrinterJob;
+
+// Quelle: https://stackoverflow.com/questions/18404553/proper-way-of-printing-a-bufferedimage-in-java
+
+public class PrintActionListener implements Runnable {
+
+	    private BufferedImage       image;
+
+	    public PrintActionListener(BufferedImage image) {
+	        this.image = image;
+	    }
+
+	    @Override
+	    public void run() {
+	        PrinterJob printJob = PrinterJob.getPrinterJob();
+	        printJob.setPrintable(new ImagePrintable(printJob, image));
+
+	        if (printJob.printDialog()) {
+	            try {
+	                printJob.print();
+	            } catch (PrinterException prt) {
+	                prt.printStackTrace();
+	            }
+	        }
+	    }
+
+	    public class ImagePrintable implements Printable {
+
+	        private double          x, y, width;
+
+	        private int             orientation;
+
+	        private BufferedImage   image;
+
+	        public ImagePrintable(PrinterJob printJob, BufferedImage image) {
+	            PageFormat pageFormat = printJob.defaultPage();
+	            this.x = pageFormat.getImageableX();
+	            this.y = pageFormat.getImageableY();
+	            this.width = pageFormat.getImageableWidth();
+	            this.orientation = pageFormat.getOrientation();
+	            this.image = image;
+	        }
+
+	        @Override
+	        public int print(Graphics g, PageFormat pageFormat, int pageIndex)
+	                throws PrinterException {
+	            if (pageIndex == 0) {
+	                int pWidth = 0;
+	                int pHeight = 0;
+	                if (orientation == PageFormat.PORTRAIT) {
+	                    pWidth = (int) Math.min(width, (double) image.getWidth());
+	                    pHeight = pWidth * image.getHeight() / image.getWidth();
+	                } else {
+	                    pHeight = (int) Math.min(width, (double) image.getHeight());
+	                    pWidth = pHeight * image.getWidth() / image.getHeight();
+	                }
+	                g.drawImage(image, (int) x, (int) y, pWidth, pHeight, null);
+	                return PAGE_EXISTS;
+	            } else {
+	                return NO_SUCH_PAGE;
+	            }
+	        }
+
+	    }
+
+	}

Kasse/src/SvenQR.java

@@ -0,0 +1,484 @@
+import java.awt.*;
+import java.awt.image.*;
+import java.awt.print.PageFormat;
+import java.awt.print.Printable;
+import java.awt.print.PrinterException;
+import java.awt.print.PrinterJob;
+import java.io.*;
+import javax.imageio.ImageIO;
+
+public class SvenQR {
+	// Anzahl der Rechtecke horizontal
+	public static final int AMNT_RECT_X = 4;
+	// Anzahl der Rechtecke vertikal
+	public static final int AMNT_RECT_Y = 3;
+	// Rahmendicke in Pixeln
+	public static final int BORDER_WIDTH = 8;
+	// Rechteckgröße in Pixeln
+	public static final int RECT_WIDTH = 40;
+
+	// Liest das angegebene Bild ein und wertet den QR-Code aus.
+	public static int ReadQR(String fileName) throws IOException {
+		// Quellbild
+		BufferedImage img = ImageIO.read(new File(fileName));
+		// Informationen über den Rand und die Ausmaße
+		BorderInformation info;
+		// Gemessene Größe des QR-Codes
+		Pair measuredSize;
+		// Wert des QR-Codes
+		int value;
+
+		img = _IN_PrepareImage(img);
+		
+		info = _IN_GetBorderWidth(img);
+
+		Pair imageSize = new Pair((int) img.getWidth(), (int) img.getHeight());
+		measuredSize = _IN_GetMeasuredSize(img, info, imageSize);
+
+		// Durchschnittsgröße der Rechtecke
+		int avgSquareWidth = (int) ((measuredSize.x - 4f * info.BorderWidth) / AMNT_RECT_X);
+		int avgSquareHeight = (int) ((measuredSize.y - 4f * info.BorderWidth) / AMNT_RECT_Y);
+		Pair avgSquareSize = new Pair(avgSquareWidth, avgSquareHeight);
+
+		value = _IN_HeuristicDetermination(img, info, avgSquareSize);
+
+		return value;
+	}
+
+	public static BufferedImage GenerateQR(int value) {
+		boolean[][] bits;
+		BufferedImage img;
+		
+		// Konvertiere die Zahl in eine Bit-Tabelle, die der QR-Code-Darstellung
+		// entspricht
+		bits = _OUT_GetBits(value);
+		
+		// Generiere Bild
+		img = _OUT_DrawImage(bits);
+	
+		return img;
+	}
+	
+	public static BufferedImage _IN_PrepareImage(BufferedImage img) {
+		// Bildgröße auslesen
+		int width = img.getWidth();
+		int height = img.getHeight();
+		
+		//
+		// = BILD ENTSÄTTIGEN UND KONTRAST SPREIZEN =
+		//
+		// Jedes Pixel durchgehen und in Graustufen umwandeln,
+		// danach den Kontrast spreizen, sodass nur noch schwarze
+		// und weiße Pixel im Bild sind, anders kann der Algorithmus
+		// nicht arbeiten.
+		//
+		
+		for (int y = 0; y < height; y++) {
+			for (int x = 0; x < width; x++) {
+
+				// Aktuelles Pixel auslesen
+				int value = img.getRGB(x, y);
+				Color c1 = new Color(value);
+				
+				// Graustufe berechnen
+				int grau = (c1.getBlue() + c1.getRed() + c1.getGreen()) / 3;
+				
+				// Kontrast spreizen
+				if (grau >= 127) {
+					grau = 255;
+				} else {
+					grau = 0;
+				}
+
+				// Pixel ersetzen
+				Color c = new Color(grau, grau, grau);
+				img.setRGB(x, y, c.getRGB());
+			}
+		}
+		
+		try {
+			File fx = new File("X:/ents.png"); // Speicherort
+			ImageIO.write(img, "png", fx); // Bildformat
+		} catch (IOException e) {
+			System.out.println("Error: " + e);
+		}
+		
+		//
+		// = ALLEINSTEHENDE PIXEL IM BILD ENTFERNEN =
+		//
+		// Wenn das Bild fleckig ist, entstehen einzelne Pixel, die
+		// den Algorithmus zum auslesen stören können, also werden
+		// diese entfernt.
+		//
+		
+		for (int x = 0; x < width; x++) {
+			for (int y = 0; y < height; y++) {
+				boolean weissAussendrum = true;
+
+				// Rechts
+				if (!(x < width - 1 && img.getRGB(x + 1, y) == -1))
+					weissAussendrum = false;
+				// Links
+				if (!(x > 0 && img.getRGB(x - 1, y) == -1))
+					weissAussendrum = false;
+				// Drunter
+				if (!(y < height - 1 && img.getRGB(x, y + 1) == -1))
+					weissAussendrum = false;
+				// Drüber
+				if (!(y > 0 && img.getRGB(x, y - 1) == -1))
+					weissAussendrum = false;
+
+				// Links oben
+				if (!(x > 0 && y > 0 && img.getRGB(x - 1, y - 1) == - 1))
+					weissAussendrum = false;
+				// Links unten
+				if (!(x > 0 && y < height - 1 && img.getRGB(x - 1, y + 1) == -1))
+					weissAussendrum = false;
+				// Rechts oben
+				if (!(x < width - 1 && y > 0 && img.getRGB(x + 1, y - 1) == -1))
+					weissAussendrum = false;
+				// Rechts unten
+				if (!(x < width - 1 && y < height - 1 && img.getRGB(x + 1, y + 1) == -1))
+					weissAussendrum = false;
+
+				if (weissAussendrum)
+					img.setRGB(x, y, -1 );
+
+			}
+		}
+		
+		try {
+			File fx = new File("X:/prep2.png"); // Speicherort
+			ImageIO.write(img, "png", fx); // Bildformat
+		} catch (IOException e) {
+			System.out.println("Error: " + e);
+		}
+		
+		return img;
+	}
+	
+	private static BorderInformation _IN_GetBorderWidth(BufferedImage img) {
+		Color pixel;
+
+		// Informationen über den Rahmen des QR-Codes
+		BorderInformation info = null;
+
+		// Breite des schwarzen Rahmens und Orientierungspunkte
+		float borderWidth = -1f;
+		Pair firstBlackPixel = new Pair(-1, -1);
+		Pair firstWhitePixel;
+		
+		//
+		// = SUCHE DAS ERSTE SCHWARZE PIXEL IN DER LINKEN OBEREN ECKE =
+		//
+
+		// Gehe diagonal durch das Bild auf der Suche nach schwarzen Pixeln
+		while (!_IN_CompareColors(img.getRGB(firstBlackPixel.x + 1, firstBlackPixel.y + 1), Color.BLACK)) {
+			firstBlackPixel.x++;
+			firstBlackPixel.y++;
+		}
+
+		firstBlackPixel.x++;
+		firstBlackPixel.y++;
+		
+		// Aufgrund von Ungenauigkeiten beim Drucken, gehen wir drei Pixel in den Rand rein
+		firstBlackPixel.x += 2;
+		
+		System.out.println("Suche schwarzes Pixel.");
+		System.out.println("X: " + firstBlackPixel.x + " Y: " + firstBlackPixel.y + "\n");
+
+		
+		// Gehe so weit wie möglich nach oben
+		while (firstBlackPixel.y > 0
+				&& _IN_CompareColors(img.getRGB(firstBlackPixel.x, firstBlackPixel.y - 1), Color.BLACK))
+			firstBlackPixel.y--;
+		
+		System.out.println("Gehe so weit wie möglich nach oben");
+		System.out.println("X: " + firstBlackPixel.x + " Y: " + firstBlackPixel.y + "\n");
+
+		// Gehe so weit wie möglich nach links
+		while (firstBlackPixel.x > 0
+				&& _IN_CompareColors(img.getRGB(firstBlackPixel.x - 1, firstBlackPixel.y), Color.BLACK))
+			firstBlackPixel.x--;
+		
+		System.out.println("Gehe so weit wie möglich nach links");
+		System.out.println("X: " + firstBlackPixel.x + " Y: " + firstBlackPixel.y + "\n");
+
+		//
+		// = SUCHE DAS ERSTE WEISSE PIXEL VOM INNEREN RAHMEN =
+		//
+
+		firstWhitePixel = new Pair(firstBlackPixel);
+
+		// Gehe diagonal vom ersten schwarzen Pixel durch das Bild
+		while (!_IN_CompareColors(img.getRGB(firstWhitePixel.x + 1, firstWhitePixel.y + 1), Color.WHITE)) {
+			firstWhitePixel.x++;
+			firstWhitePixel.y++;
+		}
+
+		firstWhitePixel.x++;
+		firstWhitePixel.y++;
+		
+		System.out.println("Suche weißes Pixel");
+		System.out.println("X: " + firstWhitePixel.x + " Y: " + firstWhitePixel.y + "\n");
+
+		// Gehe so weit wie möglich nach oben
+		while (_IN_CompareColors(img.getRGB(firstWhitePixel.x, firstWhitePixel.y - 1), Color.WHITE))
+			firstWhitePixel.y--;
+		
+		System.out.println("Gehe soweit wie möglich nach oben");
+		System.out.println("X: " + firstWhitePixel.x + " Y: " + firstWhitePixel.y + "\n");
+
+		// Gehe so weit wie möglich nach links
+		while (_IN_CompareColors(img.getRGB(firstWhitePixel.x - 1, firstWhitePixel.y), Color.WHITE))
+			firstWhitePixel.x--;
+		
+		System.out.println("Gehe soweit wie möglich nach links");
+		System.out.println("X: " + firstWhitePixel.x + " Y: " + firstWhitePixel.y + "\n");
+
+		// Differenzen, also Rahmenstärke ausrechnen
+		int deltaX = firstWhitePixel.x - firstBlackPixel.x;
+		int deltaY = firstWhitePixel.y - firstBlackPixel.y;
+
+		// Durchschnitt ermitteln
+		borderWidth = (deltaX + deltaY) / 2f;
+		
+		System.out.println("Border width: " + borderWidth);
+
+		info = new BorderInformation(borderWidth, firstBlackPixel);
+		return info;
+	}
+
+	private static Pair _IN_GetMeasuredSize(BufferedImage img, BorderInformation borderInfo, Pair imageSize) {
+		Pair measuredSize;
+		Pair upperRightBlackPixel, lowerLeftBlackPixel;
+		Color pixel;
+
+		//
+		// = MESSE DIE BREITE DES QR-CODES =
+		//
+
+		upperRightBlackPixel = new Pair(borderInfo.firstBlackPixel);
+		// Weil das Bild nicht immer gerade ist, messen wir in der Mitte des
+		// schwarzen Rahmens
+		upperRightBlackPixel.y += borderInfo.BorderWidth / 2f;
+
+		while (upperRightBlackPixel.x < imageSize.x - 1
+				&& !_IN_CompareColors(img.getRGB(upperRightBlackPixel.x + 1, upperRightBlackPixel.y), Color.WHITE))
+			upperRightBlackPixel.x++;
+
+		//
+		// = MESSE DIE HÖHE DES QR-CODES =
+		//
+
+		lowerLeftBlackPixel = new Pair(borderInfo.firstBlackPixel);
+		// Immer mittig messen, kann bei arg schiefen Bildern jedoch auch wieder
+		// zu fehlerhaften Ergebnissen führen
+		// In solch einem Fall können wir nichts tun :/
+		lowerLeftBlackPixel.x += borderInfo.BorderWidth / 2f;
+
+		while (lowerLeftBlackPixel.y < imageSize.y - 1
+				&& !_IN_CompareColors(img.getRGB(upperRightBlackPixel.x, upperRightBlackPixel.y + 1), Color.WHITE))
+			lowerLeftBlackPixel.y++;
+
+		// Errechne die Größe des QR-Codes aus den Differenzen der Punkte
+		measuredSize = new Pair(upperRightBlackPixel.x - borderInfo.firstBlackPixel.x,
+				lowerLeftBlackPixel.y - borderInfo.firstBlackPixel.y);
+		measuredSize.x++;
+		measuredSize.y++;
+		
+		System.out.println("Gemessene Größe: " + measuredSize.x + " x " + measuredSize.y);
+
+		return measuredSize;
+	}
+
+	private static int _IN_HeuristicDetermination(BufferedImage img, BorderInformation borderInfo, Pair avgSquareSize) {
+		boolean[][] bits = new boolean[AMNT_RECT_X][AMNT_RECT_Y];
+		float halfWidth = avgSquareSize.x / 2f, halfHeight = avgSquareSize.y / 2f;
+		int c_value;
+
+		for (int x = 0; x < AMNT_RECT_X; x++) {
+			for (int y = 0; y < AMNT_RECT_Y; y++) {
+
+				int _x = (int) (2 * borderInfo.BorderWidth);
+				_x += (int) (x * avgSquareSize.x);
+				_x += (int) halfWidth;
+				_x += borderInfo.firstBlackPixel.x;
+
+				int _y = (int) (2 * borderInfo.BorderWidth);
+				_y += (int) (y * avgSquareSize.y);
+				_y += (int) halfHeight;
+				_y += borderInfo.firstBlackPixel.y;
+
+				c_value = img.getRGB(_x, _y);
+				System.out.println("X: " + _x + " Y: " + _y + " V: " + (_IN_CompareColors(c_value, Color.WHITE) ? false : true));
+
+				if (_IN_CompareColors(c_value, Color.WHITE))
+					bits[x][y] = false;
+				else if (_IN_CompareColors(c_value, Color.BLACK))
+					bits[x][y] = true;
+			}
+		}
+
+		int value = 0;
+
+		if (bits[0][0])
+			value += 1;
+		if (bits[1][0])
+			value += 2;
+		if (bits[2][0])
+			value += 4;
+		if (bits[3][0])
+			value += 8;
+
+		if (bits[0][1])
+			value += 16;
+		if (bits[1][1])
+			value += 32;
+		if (bits[2][1])
+			value += 64;
+		if (bits[3][1])
+			value += 128;
+
+		if (bits[0][2])
+			value += 256;
+		if (bits[1][2])
+			value += 512;
+		if (bits[2][2])
+			value += 1024;
+		if (bits[3][2])
+			value += 2048;
+
+		return value;
+	}
+
+	private static boolean _IN_CompareColors(int rgb, Color template) {
+		Color c = new Color(rgb);
+		if (c.getRed() != template.getRed())
+			return false;
+		if (c.getGreen() != template.getGreen())
+			return false;
+		if (c.getBlue() != template.getBlue())
+			return false;
+		return true;
+	}
+
+	private static boolean[][] _OUT_GetBits(int value) {
+		// Die Bits in QR-Code-Darstellung
+		boolean[][] bits = new boolean[AMNT_RECT_X][AMNT_RECT_Y];
+		// Die Bits als Binärstring
+		String bitsAsString = Integer.toBinaryString(value);
+		// Anzahl an führenden Nullen für 12-Bit:
+		int amntLeadingZeros = 12 - bitsAsString.length();
+
+		// Stelle führende Nullen voran
+		for (int i = 0; i < amntLeadingZeros; i++)
+			bitsAsString = "0" + bitsAsString;
+
+		bits[0][0] = bitsAsString.charAt(11) == '0' ? false : true;
+		bits[1][0] = bitsAsString.charAt(10) == '0' ? false : true;
+		bits[2][0] = bitsAsString.charAt(9) == '0' ? false : true;
+		bits[3][0] = bitsAsString.charAt(8) == '0' ? false : true;
+		bits[0][1] = bitsAsString.charAt(7) == '0' ? false : true;
+		bits[1][1] = bitsAsString.charAt(6) == '0' ? false : true;
+		bits[2][1] = bitsAsString.charAt(5) == '0' ? false : true;
+		bits[3][1] = bitsAsString.charAt(4) == '0' ? false : true;
+		bits[0][2] = bitsAsString.charAt(3) == '0' ? false : true;
+		bits[1][2] = bitsAsString.charAt(2) == '0' ? false : true;
+		bits[2][2] = bitsAsString.charAt(1) == '0' ? false : true;
+		bits[3][2] = bitsAsString.charAt(0) == '0' ? false : true;
+
+		return bits;
+	}
+
+	private static BufferedImage _OUT_DrawImage(boolean[][] bits) {
+		// Bildgröße
+		Pair imageSize;
+		// Bild
+		BufferedImage img;
+		// Grafikobjekt zum zeichnen
+		Graphics2D g;
+		
+		// Bildbreite und -höhe berechnen
+		// Bei 72 dpi entspricht 1mm 3px, wir nehmen 2px
+		imageSize = new Pair(BORDER_WIDTH * 4 + AMNT_RECT_X * RECT_WIDTH, BORDER_WIDTH * 4 + AMNT_RECT_Y * RECT_WIDTH);
+
+		// Bild erstellen und Grafikobjekt erstellen
+		img = new BufferedImage(imageSize.x, imageSize.y, BufferedImage.TYPE_INT_ARGB);
+		g = img.createGraphics();
+		
+		//
+		// = QR-CODE-ZEICHEN =
+		//
+		
+		// Äußeren Rahmen zeichnen
+		g.setColor(Color.BLACK);
+		g.fillRect(0, 0, imageSize.x, imageSize.y);
+		
+		// Inneren Rahmen zeichnen
+		g.setColor(Color.WHITE);
+		g.fillRect(BORDER_WIDTH, BORDER_WIDTH, imageSize.x - 2 * BORDER_WIDTH, imageSize.y - 2 * BORDER_WIDTH);
+		
+		g.setColor(Color.BLACK);
+		
+		// Rechtecke zeichnen
+		for (int x = 0; x < AMNT_RECT_X; x++) {
+			for (int y = 0; y < AMNT_RECT_Y; y++) {
+				int _x = BORDER_WIDTH * 2 + x * RECT_WIDTH;
+				int _y = BORDER_WIDTH * 2 + y * RECT_WIDTH;
+				
+				if (!bits[x][y])
+					continue;
+				
+				g.fillRect(_x, _y, RECT_WIDTH, RECT_WIDTH);
+			}
+		}
+		
+		// Rechte untere Ecke als Orientierungspunkt entfernen
+		g.setColor(Color.WHITE);
+		g.fillRect(imageSize.x - BORDER_WIDTH, imageSize.y - BORDER_WIDTH, BORDER_WIDTH, BORDER_WIDTH);
+		
+		return img;
+	}
+
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
+
+
+
+

Kasse/src/lib/SQLConnection.java

@@ -0,0 +1,135 @@
+package lib;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+import java.sql.ResultSetMetaData;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+
+/**
+ * SQL helper to interact with the database
+ * 
+ * @author Manuel
+ */
+public class SQLConnection {
+	
+	Connection con;
+
+	public SQLConnection() {
+		this("102-012/sven");
+	}
+	
+	public SQLConnection(String url) {
+		this(url, "intabi19", "hallo");
+	}
+	
+	public SQLConnection(String url, String username, String password) {
+		try {
+			this.con = DriverManager.getConnection("jdbc:mysql://" + url, username, password);
+		} catch (SQLException e) {
+			e.printStackTrace();
+		}
+	}
+	
+	/**
+	 * Executes a query without storing the return values
+	 * 
+	 * @param sqlQuery SQL command to be executed
+	 */
+	public void execute(String sqlQuery) {
+		try {
+			System.out.println("SQL: " + sqlQuery);
+			this.con.createStatement().execute(sqlQuery);
+		} catch (SQLException e) {
+			e.printStackTrace();
+		}
+	}
+	
+	/**
+	 * @returns table headers in a list from an existing meta data object
+	 */
+	private ArrayList<String> getColumnNames(ResultSetMetaData metaData) throws SQLException {
+		int columns = metaData.getColumnCount();
+		
+		ArrayList<String> columnTitles = new ArrayList<>();
+		for (int i = 0; i < columns; i++) {
+			columnTitles.add(metaData.getColumnLabel(i + 1));
+		}
+		
+		return columnTitles;
+	}
+
+	/**
+	 * Converts the database return values into a usable format
+	 * 
+	 * @param sqlQuery SQL command to be executed
+	 * @return a list of rows that are keyed by their column name
+	 */
+	public ArrayList<HashMap<String, String>> queryToMap(String sqlQuery) {
+		ArrayList<HashMap<String, String>> data = new ArrayList<>();
+		
+		//System.out.println("SQLq: " + sqlQuery);
+		
+		try {
+			ResultSet result = this.con.createStatement().executeQuery(sqlQuery);
+			ResultSetMetaData metaData = result.getMetaData();
+			
+			int columns = metaData.getColumnCount();
+			
+			ArrayList<String> columnTitles = getColumnNames(metaData);
+			
+			// iterate over all rows
+			while (result.next()) {
+				HashMap<String, String> row = new HashMap<>();
+				for (int i = 0; i < columns; i++) {
+					// copy items from table to row
+					row.put(columnTitles.get(i), result.getString(i + 1));
+				}
+				data.add(row);
+			}
+		} catch (SQLException e) {
+			e.printStackTrace();
+		}
+		
+		return data;
+	}
+	
+	@Deprecated
+	public ArrayList<ArrayList<String>> queryToArray(String sqlQuery) {
+		ArrayList<ArrayList<String>> data = new ArrayList<>();
+		
+		try {
+			ResultSet result = this.con.createStatement().executeQuery(sqlQuery);
+			ResultSetMetaData metaData = result.getMetaData();
+			
+			int columns = metaData.getColumnCount();
+			
+			// iterate over all rows
+			while (result.next()) {
+				ArrayList<String> row = new ArrayList<>();
+				for (int i = 0; i < columns; i++) {
+					// copy items from table to row
+					row.add(result.getString(i + 1));
+				}
+				data.add(row);
+			}
+		} catch (SQLException e) {
+			e.printStackTrace();
+		}
+		
+		return data;
+	}
+	
+	/**
+	 * Closes the connection with the database
+	 */
+	public void close() {
+		try {
+			this.con.close();
+		} catch (SQLException e) {
+			e.printStackTrace();
+		}
+	}
+}

Kasse/src/org/mindrot/BCrypt.java

@@ -0,0 +1,778 @@
+package org.mindrot;
+
+// Copyright (c) 2006 Damien Miller <djm@mindrot.org>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+import java.io.UnsupportedEncodingException;
+
+import java.security.SecureRandom;
+
+/**
+ * BCrypt implements OpenBSD-style Blowfish password hashing using
+ * the scheme described in "A Future-Adaptable Password Scheme" by
+ * Niels Provos and David Mazieres.
+ * <p>
+ * This password hashing system tries to thwart off-line password
+ * cracking using a computationally-intensive hashing algorithm,
+ * based on Bruce Schneier's Blowfish cipher. The work factor of
+ * the algorithm is parameterised, so it can be increased as
+ * computers get faster.
+ * <p>
+ * Usage is really simple. To hash a password for the first time,
+ * call the hashpw method with a random salt, like this:
+ * <p>
+ * <code>
+ * String pw_hash = BCrypt.hashpw(plain_password, BCrypt.gensalt()); <br />
+ * </code>
+ * <p>
+ * To check whether a plaintext password matches one that has been
+ * hashed previously, use the checkpw method:
+ * <p>
+ * <code>
+ * if (BCrypt.checkpw(candidate_password, stored_hash))<br />
+ * &nbsp;&nbsp;&nbsp;&nbsp;System.out.println("It matches");<br />
+ * else<br />
+ * &nbsp;&nbsp;&nbsp;&nbsp;System.out.println("It does not match");<br />
+ * </code>
+ * <p>
+ * The gensalt() method takes an optional parameter (log_rounds)
+ * that determines the computational complexity of the hashing:
+ * <p>
+ * <code>
+ * String strong_salt = BCrypt.gensalt(10)<br />
+ * String stronger_salt = BCrypt.gensalt(12)<br />
+ * </code>
+ * <p>
+ * The amount of work increases exponentially (2**log_rounds), so 
+ * each increment is twice as much work. The default log_rounds is
+ * 10, and the valid range is 4 to 30.
+ *
+ * @author Damien Miller
+ * @version 0.4
+ */
+public class BCrypt {
+	// BCrypt parameters
+	private static final int GENSALT_DEFAULT_LOG2_ROUNDS = 10;
+	private static final int BCRYPT_SALT_LEN = 16;
+
+	// Blowfish parameters
+	private static final int BLOWFISH_NUM_ROUNDS = 16;
+
+	// Initial contents of key schedule
+	private static final int P_orig[] = {
+		0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
+		0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
+		0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
+		0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
+		0x9216d5d9, 0x8979fb1b
+	};
+	private static final int S_orig[] = {
+		0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
+		0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
+		0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
+		0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
+		0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee,
+		0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
+		0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef,
+		0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
+		0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
+		0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
+		0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce,
+		0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
+		0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e,
+		0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
+		0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
+		0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
+		0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88,
+		0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
+		0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e,
+		0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
+		0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
+		0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
+		0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88,
+		0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
+		0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
+		0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
+		0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
+		0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
+		0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba,
+		0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
+		0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f,
+		0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
+		0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
+		0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
+		0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279,
+		0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
+		0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab,
+		0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
+		0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
+		0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
+		0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0,
+		0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
+		0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790,
+		0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
+		0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
+		0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
+		0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7,
+		0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
+		0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad,
+		0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
+		0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
+		0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
+		0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477,
+		0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
+		0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
+		0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
+		0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
+		0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
+		0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41,
+		0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
+		0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400,
+		0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
+		0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
+		0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a,
+		0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623,
+		0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
+		0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
+		0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
+		0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6,
+		0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
+		0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e,
+		0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
+		0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
+		0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
+		0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff,
+		0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
+		0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701,
+		0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
+		0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
+		0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
+		0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf,
+		0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
+		0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e,
+		0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
+		0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
+		0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
+		0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16,
+		0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
+		0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b,
+		0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
+		0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
+		0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
+		0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f,
+		0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
+		0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4,
+		0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
+		0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
+		0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
+		0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802,
+		0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
+		0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510,
+		0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
+		0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
+		0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
+		0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50,
+		0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
+		0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8,
+		0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
+		0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
+		0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
+		0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128,
+		0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
+		0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0,
+		0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
+		0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
+		0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
+		0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3,
+		0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
+		0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00,
+		0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
+		0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
+		0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
+		0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735,
+		0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
+		0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9,
+		0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
+		0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
+		0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7,
+		0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934,
+		0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
+		0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
+		0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
+		0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45,
+		0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
+		0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a,
+		0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
+		0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
+		0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
+		0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42,
+		0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
+		0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2,
+		0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
+		0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
+		0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
+		0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33,
+		0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
+		0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3,
+		0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
+		0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
+		0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
+		0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b,
+		0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
+		0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922,
+		0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
+		0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
+		0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
+		0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37,
+		0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
+		0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804,
+		0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
+		0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
+		0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
+		0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d,
+		0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
+		0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350,
+		0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
+		0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
+		0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
+		0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d,
+		0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
+		0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f,
+		0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
+		0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
+		0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
+		0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2,
+		0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
+		0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e,
+		0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
+		0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
+		0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
+		0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52,
+		0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
+		0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5,
+		0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
+		0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
+		0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
+		0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24,
+		0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
+		0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4,
+		0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
+		0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
+		0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0,
+		0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b,
+		0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
+		0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
+		0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
+		0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8,
+		0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
+		0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304,
+		0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
+		0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
+		0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
+		0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9,
+		0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
+		0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593,
+		0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
+		0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
+		0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
+		0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b,
+		0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
+		0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c,
+		0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
+		0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
+		0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
+		0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb,
+		0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
+		0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991,
+		0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
+		0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
+		0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
+		0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae,
+		0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
+		0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5,
+		0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
+		0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
+		0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
+		0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84,
+		0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
+		0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8,
+		0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
+		0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
+		0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
+		0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38,
+		0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
+		0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c,
+		0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
+		0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
+		0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
+		0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964,
+		0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
+		0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8,
+		0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
+		0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
+		0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
+		0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02,
+		0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
+		0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614,
+		0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
+		0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
+		0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
+		0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0,
+		0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
+		0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e,
+		0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
+		0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
+		0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6
+	};
+
+	// bcrypt IV: "OrpheanBeholderScryDoubt". The C implementation calls
+	// this "ciphertext", but it is really plaintext or an IV. We keep
+	// the name to make code comparison easier.
+	static private final int bf_crypt_ciphertext[] = {
+		0x4f727068, 0x65616e42, 0x65686f6c,
+		0x64657253, 0x63727944, 0x6f756274
+	};
+
+	// Table for Base64 encoding
+	static private final char base64_code[] = {
+		'.', '/', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
+		'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V',
+		'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+		'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't',
+		'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5',
+		'6', '7', '8', '9'
+	};
+
+	// Table for Base64 decoding
+	static private final byte index_64[] = {
+		-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+		-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+		-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+		-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+		-1, -1, -1, -1, -1, -1, 0, 1, 54, 55,
+		56, 57, 58, 59, 60, 61, 62, 63, -1, -1,
+		-1, -1, -1, -1, -1, 2, 3, 4, 5, 6,
+		7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
+		17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
+		-1, -1, -1, -1, -1, -1, 28, 29, 30,
+		31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
+		41, 42, 43, 44, 45, 46, 47, 48, 49, 50,
+		51, 52, 53, -1, -1, -1, -1, -1
+	};
+
+	// Expanded Blowfish key
+	private int P[];
+	private int S[];
+
+	/**
+	 * Encode a byte array using bcrypt's slightly-modified base64
+	 * encoding scheme. Note that this is *not* compatible with
+	 * the standard MIME-base64 encoding.
+	 *
+	 * @param d	the byte array to encode
+	 * @param len	the number of bytes to encode
+	 * @return	base64-encoded string
+	 * @exception IllegalArgumentException if the length is invalid
+	 */
+	private static String encode_base64(byte d[], int len)
+		throws IllegalArgumentException {
+		int off = 0;
+		StringBuffer rs = new StringBuffer();
+		int c1, c2;
+
+		if (len <= 0 || len > d.length)
+			throw new IllegalArgumentException ("Invalid len");
+
+		while (off < len) {
+			c1 = d[off++] & 0xff;
+			rs.append(base64_code[(c1 >> 2) & 0x3f]);
+			c1 = (c1 & 0x03) << 4;
+			if (off >= len) {
+				rs.append(base64_code[c1 & 0x3f]);
+				break;
+			}
+			c2 = d[off++] & 0xff;
+			c1 |= (c2 >> 4) & 0x0f;
+			rs.append(base64_code[c1 & 0x3f]);
+			c1 = (c2 & 0x0f) << 2;
+			if (off >= len) {
+				rs.append(base64_code[c1 & 0x3f]);
+				break;
+			}
+			c2 = d[off++] & 0xff;
+			c1 |= (c2 >> 6) & 0x03;
+			rs.append(base64_code[c1 & 0x3f]);
+			rs.append(base64_code[c2 & 0x3f]);
+		}
+		return rs.toString();
+	}
+
+	/**
+	 * Look up the 3 bits base64-encoded by the specified character,
+	 * range-checking againt conversion table
+	 * @param x	the base64-encoded value
+	 * @return	the decoded value of x
+	 */
+	private static byte char64(char x) {
+		if ((int)x < 0 || (int)x > index_64.length)
+			return -1;
+		return index_64[(int)x];
+	}
+
+	/**
+	 * Decode a string encoded using bcrypt's base64 scheme to a
+	 * byte array. Note that this is *not* compatible with
+	 * the standard MIME-base64 encoding.
+	 * @param s	the string to decode
+	 * @param maxolen	the maximum number of bytes to decode
+	 * @return	an array containing the decoded bytes
+	 * @throws IllegalArgumentException if maxolen is invalid
+	 */
+	private static byte[] decode_base64(String s, int maxolen)
+		throws IllegalArgumentException {
+		StringBuffer rs = new StringBuffer();
+		int off = 0, slen = s.length(), olen = 0;
+		byte ret[];
+		byte c1, c2, c3, c4, o;
+
+		if (maxolen <= 0)
+			throw new IllegalArgumentException ("Invalid maxolen");
+
+		while (off < slen - 1 && olen < maxolen) {
+			c1 = char64(s.charAt(off++));
+			c2 = char64(s.charAt(off++));
+			if (c1 == -1 || c2 == -1)
+				break;
+			o = (byte)(c1 << 2);
+			o |= (c2 & 0x30) >> 4;
+			rs.append((char)o);
+			if (++olen >= maxolen || off >= slen)
+				break;
+			c3 = char64(s.charAt(off++));
+			if (c3 == -1)
+				break;
+			o = (byte)((c2 & 0x0f) << 4);
+			o |= (c3 & 0x3c) >> 2;
+			rs.append((char)o);
+			if (++olen >= maxolen || off >= slen)
+				break;
+			c4 = char64(s.charAt(off++));
+			o = (byte)((c3 & 0x03) << 6);
+			o |= c4;
+			rs.append((char)o);
+			++olen;
+		}
+
+		ret = new byte[olen];
+		for (off = 0; off < olen; off++)
+			ret[off] = (byte)rs.charAt(off);
+		return ret;
+	}
+
+	/**
+	 * Blowfish encipher a single 64-bit block encoded as
+	 * two 32-bit halves
+	 * @param lr	an array containing the two 32-bit half blocks
+	 * @param off	the position in the array of the blocks
+	 */
+	private final void encipher(int lr[], int off) {
+		int i, n, l = lr[off], r = lr[off + 1];
+
+		l ^= P[0];
+		for (i = 0; i <= BLOWFISH_NUM_ROUNDS - 2;) {
+			// Feistel substitution on left word
+			n = S[(l >> 24) & 0xff];
+			n += S[0x100 | ((l >> 16) & 0xff)];
+			n ^= S[0x200 | ((l >> 8) & 0xff)];
+			n += S[0x300 | (l & 0xff)];
+			r ^= n ^ P[++i];
+
+			// Feistel substitution on right word
+			n = S[(r >> 24) & 0xff];
+			n += S[0x100 | ((r >> 16) & 0xff)];
+			n ^= S[0x200 | ((r >> 8) & 0xff)];
+			n += S[0x300 | (r & 0xff)];
+			l ^= n ^ P[++i];
+		}
+		lr[off] = r ^ P[BLOWFISH_NUM_ROUNDS + 1];
+		lr[off + 1] = l;
+	}
+
+	/**
+	 * Cycically extract a word of key material
+	 * @param data	the string to extract the data from
+	 * @param offp	a "pointer" (as a one-entry array) to the
+	 * current offset into data
+	 * @return	the next word of material from data
+	 */
+	private static int streamtoword(byte data[], int offp[]) {
+		int i;
+		int word = 0;
+		int off = offp[0];
+
+		for (i = 0; i < 4; i++) {
+			word = (word << 8) | (data[off] & 0xff);
+			off = (off + 1) % data.length;
+		}
+
+		offp[0] = off;
+		return word;
+	}
+
+	/**
+	 * Initialise the Blowfish key schedule
+	 */
+	private void init_key() {
+		P = (int[])P_orig.clone();
+		S = (int[])S_orig.clone();
+	}
+
+	/**
+	 * Key the Blowfish cipher
+	 * @param key	an array containing the key
+	 */
+	private void key(byte key[]) {
+		int i;
+		int koffp[] = { 0 };
+		int lr[] = { 0, 0 };
+		int plen = P.length, slen = S.length;
+
+		for (i = 0; i < plen; i++)
+			P[i] = P[i] ^ streamtoword(key, koffp);
+
+		for (i = 0; i < plen; i += 2) {
+			encipher(lr, 0);
+			P[i] = lr[0];
+			P[i + 1] = lr[1];
+		}
+
+		for (i = 0; i < slen; i += 2) {
+			encipher(lr, 0);
+			S[i] = lr[0];
+			S[i + 1] = lr[1];
+		}
+	}
+
+	/**
+	 * Perform the "enhanced key schedule" step described by
+	 * Provos and Mazieres in "A Future-Adaptable Password Scheme"
+	 * http://www.openbsd.org/papers/bcrypt-paper.ps
+	 * @param data	salt information
+	 * @param key	password information
+	 */
+	private void ekskey(byte data[], byte key[]) {
+		int i;
+		int koffp[] = { 0 }, doffp[] = { 0 };
+		int lr[] = { 0, 0 };
+		int plen = P.length, slen = S.length;
+
+		for (i = 0; i < plen; i++)
+			P[i] = P[i] ^ streamtoword(key, koffp);
+
+		for (i = 0; i < plen; i += 2) {
+			lr[0] ^= streamtoword(data, doffp);
+			lr[1] ^= streamtoword(data, doffp);
+			encipher(lr, 0);
+			P[i] = lr[0];
+			P[i + 1] = lr[1];
+		}
+
+		for (i = 0; i < slen; i += 2) {
+			lr[0] ^= streamtoword(data, doffp);
+			lr[1] ^= streamtoword(data, doffp);
+			encipher(lr, 0);
+			S[i] = lr[0];
+			S[i + 1] = lr[1];
+		}
+	}
+
+	/**
+	 * Perform the central password hashing step in the
+	 * bcrypt scheme
+	 * @param password	the password to hash
+	 * @param salt	the binary salt to hash with the password
+	 * @param log_rounds	the binary logarithm of the number
+	 * of rounds of hashing to apply
+	 * @param cdata         the plaintext to encrypt
+	 * @return	an array containing the binary hashed password
+	 */
+	public byte[] crypt_raw(byte password[], byte salt[], int log_rounds,
+	    int cdata[]) {
+		int rounds, i, j;
+		int clen = cdata.length;
+		byte ret[];
+
+		if (log_rounds < 4 || log_rounds > 30)
+			throw new IllegalArgumentException ("Bad number of rounds");
+		rounds = 1 << log_rounds;
+		if (salt.length != BCRYPT_SALT_LEN)
+			throw new IllegalArgumentException ("Bad salt length");
+
+		init_key();
+		ekskey(salt, password);
+		for (i = 0; i != rounds; i++) {
+			key(password);
+			key(salt);
+		}
+
+		for (i = 0; i < 64; i++) {
+			for (j = 0; j < (clen >> 1); j++)
+				encipher(cdata, j << 1);
+		}
+
+		ret = new byte[clen * 4];
+		for (i = 0, j = 0; i < clen; i++) {
+			ret[j++] = (byte)((cdata[i] >> 24) & 0xff);
+			ret[j++] = (byte)((cdata[i] >> 16) & 0xff);
+			ret[j++] = (byte)((cdata[i] >> 8) & 0xff);
+			ret[j++] = (byte)(cdata[i] & 0xff);
+		}
+		return ret;
+	}
+
+	/**
+	 * Hash a password using the OpenBSD bcrypt scheme
+	 * @param password	the password to hash
+	 * @param salt	the salt to hash with (perhaps generated
+	 * using BCrypt.gensalt)
+	 * @return	the hashed password
+	 */
+	public static String hashpw(String password, String salt) {
+		BCrypt B;
+		String real_salt;
+		byte passwordb[], saltb[], hashed[];
+		char minor = (char)0;
+		int rounds, off = 0;
+		StringBuffer rs = new StringBuffer();
+
+		if (salt.charAt(0) != '$' || salt.charAt(1) != '2')
+			throw new IllegalArgumentException ("Invalid salt version");
+		if (salt.charAt(2) == '$')
+			off = 3;
+		else {
+			minor = salt.charAt(2);
+			if (minor != 'a' || salt.charAt(3) != '$')
+				throw new IllegalArgumentException ("Invalid salt revision");
+			off = 4;
+		}
+
+		// Extract number of rounds
+		if (salt.charAt(off + 2) > '$')
+			throw new IllegalArgumentException ("Missing salt rounds");
+		rounds = Integer.parseInt(salt.substring(off, off + 2));
+
+		real_salt = salt.substring(off + 3, off + 25);
+		try {
+			passwordb = (password + (minor >= 'a' ? "\000" : "")).getBytes("UTF-8");
+		} catch (UnsupportedEncodingException uee) {
+			throw new AssertionError("UTF-8 is not supported");
+		}
+
+		saltb = decode_base64(real_salt, BCRYPT_SALT_LEN);
+
+		B = new BCrypt();
+		hashed = B.crypt_raw(passwordb, saltb, rounds,
+		    (int[])bf_crypt_ciphertext.clone());
+
+		rs.append("$2");
+		if (minor >= 'a')
+			rs.append(minor);
+		rs.append("$");
+		if (rounds < 10)
+			rs.append("0");
+		if (rounds > 30) {
+			throw new IllegalArgumentException(
+			    "rounds exceeds maximum (30)");
+		}
+		rs.append(Integer.toString(rounds));
+		rs.append("$");
+		rs.append(encode_base64(saltb, saltb.length));
+		rs.append(encode_base64(hashed,
+		    bf_crypt_ciphertext.length * 4 - 1));
+		return rs.toString();
+	}
+
+	/**
+	 * Generate a salt for use with the BCrypt.hashpw() method
+	 * @param log_rounds	the log2 of the number of rounds of
+	 * hashing to apply - the work factor therefore increases as
+	 * 2**log_rounds.
+	 * @param random		an instance of SecureRandom to use
+	 * @return	an encoded salt value
+	 */
+	public static String gensalt(int log_rounds, SecureRandom random) {
+		StringBuffer rs = new StringBuffer();
+		byte rnd[] = new byte[BCRYPT_SALT_LEN];
+
+		random.nextBytes(rnd);
+
+		rs.append("$2a$");
+		if (log_rounds < 10)
+			rs.append("0");
+		if (log_rounds > 30) {
+			throw new IllegalArgumentException(
+			    "log_rounds exceeds maximum (30)");
+		}
+		rs.append(Integer.toString(log_rounds));
+		rs.append("$");
+		rs.append(encode_base64(rnd, rnd.length));
+		return rs.toString();
+	}
+
+	/**
+	 * Generate a salt for use with the BCrypt.hashpw() method
+	 * @param log_rounds	the log2 of the number of rounds of
+	 * hashing to apply - the work factor therefore increases as
+	 * 2**log_rounds.
+	 * @return	an encoded salt value
+	 */
+	public static String gensalt(int log_rounds) {
+		return gensalt(log_rounds, new SecureRandom());
+	}
+
+	/**
+	 * Generate a salt for use with the BCrypt.hashpw() method,
+	 * selecting a reasonable default for the number of hashing
+	 * rounds to apply
+	 * @return	an encoded salt value
+	 */
+	public static String gensalt() {
+		return gensalt(GENSALT_DEFAULT_LOG2_ROUNDS);
+	}
+
+	/**
+	 * Check that a plaintext password matches a previously hashed
+	 * one
+	 * @param plaintext	the plaintext password to verify
+	 * @param hashed	the previously-hashed password
+	 * @return	true if the passwords match, false otherwise
+	 */
+	public static boolean checkpw(String plaintext, String hashed) {
+		byte hashed_bytes[];
+		byte try_bytes[];
+		try {
+			String try_pw = hashpw(plaintext, hashed);
+			hashed_bytes = hashed.getBytes("UTF-8");
+			try_bytes = try_pw.getBytes("UTF-8");
+		} catch (UnsupportedEncodingException uee) {
+			return false;
+		}
+		if (hashed_bytes.length != try_bytes.length)
+			return false;
+		byte ret = 0;
+		for (int i = 0; i < try_bytes.length; i++)
+			ret |= hashed_bytes[i] ^ try_bytes[i];
+		return ret == 0;
+	}
+}