diff --git a/pom.xml b/pom.xml
index d666d95..cc3a8ab 100644
--- a/pom.xml
+++ b/pom.xml
@@ -154,6 +154,13 @@
             <version>2.4.1</version>
         </dependency>
 
+
+        <dependency>
+            <groupId>org.mindrot</groupId>
+            <artifactId>jbcrypt</artifactId>
+            <version>0.3m</version>
+        </dependency>
+
         <!--JUnit-->
         <dependency>
             <groupId>org.junit.jupiter</groupId>
diff --git a/src/main/java/de/hsel/itech/db/Database.java b/src/main/java/de/hsel/itech/db/Database.java
index a9b89a0..10f34f1 100644
--- a/src/main/java/de/hsel/itech/db/Database.java
+++ b/src/main/java/de/hsel/itech/db/Database.java
@@ -32,11 +32,15 @@ public class Database {
     final String tableAuthorBook = "author_book";
     final String tablePublisher = "publisher";
     final String tableCategory = "category";
+    final String tableUser = "user";
+    final String tableUserAddress = "user_address";
+    final String tableAddress = "address";
 
     private AuthorDB authorDB;
     private BookDB bookDB;
     private CategoryDB categoryDB;
     private PublisherDB publisherDB;
+    private UserDB userDB;
 
     private static Database instance;
 
@@ -124,6 +128,12 @@ public class Database {
         return publisherDB;
     }
 
+    public UserDB user() {
+        if(userDB == null)
+            userDB = new UserDB(this);
+        return userDB;
+    }
+
 
 
     /**
diff --git a/src/main/java/de/hsel/itech/db/UserDB.java b/src/main/java/de/hsel/itech/db/UserDB.java
new file mode 100644
index 0000000..dd562ac
--- /dev/null
+++ b/src/main/java/de/hsel/itech/db/UserDB.java
@@ -0,0 +1,89 @@
+package de.hsel.itech.db;
+
+import de.hsel.itech.db.pojo.User;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.mindrot.jbcrypt.BCrypt;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.Map;
+
+/**
+ * @author Johannes Theiner
+ * @version 0.1
+ * @since 0.5
+ **/
+public class UserDB {
+
+    private Database database;
+
+    private final int logRounds = 11;
+
+    UserDB(Database database) {
+        this.database = database;
+    }
+
+    @Nullable
+    public User get(long id) {
+        Map.Entry<ResultSet, Connection> entry = database.getResultSetById(database.tableUser, id);
+        assert entry != null;
+
+        ResultSet rs = entry.getKey();
+        try {
+            return new User(rs.getString("email"), rs.getString("name"), rs.getString("password"), rs.getShort("type"));
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+
+        try {
+            entry.getValue().close();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public boolean verify(@NotNull User user, @NotNull String password) {
+        return verifyHash(password, user.getPassword());
+    }
+
+
+    public int insert(@NotNull User user) {
+        user.setPassword(hash(user.getPassword()));
+
+
+        Connection connection = database.getConnection();
+        int updateCount = 0;
+
+        try {
+            assert connection != null;
+            PreparedStatement statement = connection.prepareStatement("INSERT INTO user (name, email, password, type) values (?, ?, ?, ?)");
+            statement.setString(1, user.getName());
+            statement.setString(2, user.getEmail());
+            statement.setString(3, user.getEmail());
+            statement.setShort(4, user.getType());
+
+            updateCount += statement.executeUpdate();
+            connection.close();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        return updateCount;
+    }
+
+    public int delete(@NotNull User user) {
+        return database.delete(user.getId(), database.tableUser);
+    }
+
+    @NotNull
+    private String hash(@NotNull String password) {
+        return BCrypt.hashpw(password, BCrypt.gensalt(logRounds));
+    }
+
+    private boolean verifyHash(@NotNull String plaintext, @NotNull String hash) {
+        return BCrypt.checkpw(plaintext, hash);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/de/hsel/itech/db/pojo/Address.java b/src/main/java/de/hsel/itech/db/pojo/Address.java
index 030e0be..39ea954 100644
--- a/src/main/java/de/hsel/itech/db/pojo/Address.java
+++ b/src/main/java/de/hsel/itech/db/pojo/Address.java
@@ -18,7 +18,7 @@ import lombok.RequiredArgsConstructor;
 @RequiredArgsConstructor
 public class Address {
 
-    @NonNull private Customer customer;
+    @NonNull private User user;
     private long id;
     @NonNull private String name;
     @NonNull private String street;
diff --git a/src/main/java/de/hsel/itech/db/pojo/CreditCardPayment.java b/src/main/java/de/hsel/itech/db/pojo/CreditCardPayment.java
index 0145e55..0d31b17 100644
--- a/src/main/java/de/hsel/itech/db/pojo/CreditCardPayment.java
+++ b/src/main/java/de/hsel/itech/db/pojo/CreditCardPayment.java
@@ -21,7 +21,7 @@ import java.time.LocalDate;
 public class CreditCardPayment {
 
     private long id;
-    @NonNull private Customer customer;
+    @NonNull private User user;
     @NonNull private int number;
     @NonNull private String owner;
     @NonNull private LocalDate expiration;
diff --git a/src/main/java/de/hsel/itech/db/pojo/DebitCardPayment.java b/src/main/java/de/hsel/itech/db/pojo/DebitCardPayment.java
index 5e7afdd..35e3985 100644
--- a/src/main/java/de/hsel/itech/db/pojo/DebitCardPayment.java
+++ b/src/main/java/de/hsel/itech/db/pojo/DebitCardPayment.java
@@ -19,7 +19,7 @@ import lombok.RequiredArgsConstructor;
 public class DebitCardPayment {
 
     private long id;
-    @NonNull private Customer customer;
+    @NonNull private User user;
     @NonNull private String iban;
     @NonNull private String bic;
     @NonNull private String owner;
diff --git a/src/main/java/de/hsel/itech/db/pojo/InvoicePayment.java b/src/main/java/de/hsel/itech/db/pojo/InvoicePayment.java
index b250a97..6e1411b 100644
--- a/src/main/java/de/hsel/itech/db/pojo/InvoicePayment.java
+++ b/src/main/java/de/hsel/itech/db/pojo/InvoicePayment.java
@@ -19,5 +19,5 @@ import lombok.RequiredArgsConstructor;
 public class InvoicePayment {
 
     private long id;
-    @NonNull private Customer customer;
+    @NonNull private User user;
 }
\ No newline at end of file
diff --git a/src/main/java/de/hsel/itech/db/pojo/PayPalPayment.java b/src/main/java/de/hsel/itech/db/pojo/PayPalPayment.java
index be55830..0c4044b 100644
--- a/src/main/java/de/hsel/itech/db/pojo/PayPalPayment.java
+++ b/src/main/java/de/hsel/itech/db/pojo/PayPalPayment.java
@@ -19,7 +19,7 @@ import lombok.RequiredArgsConstructor;
 public class PayPalPayment {
 
     private long id;
-    @NonNull private Customer customer;
+    @NonNull private User user;
     @NonNull private String email;
     @NonNull private String authCode;
 }
\ No newline at end of file
diff --git a/src/main/java/de/hsel/itech/db/pojo/ShoppingCart.java b/src/main/java/de/hsel/itech/db/pojo/ShoppingCart.java
index 547743a..c7fd9ec 100644
--- a/src/main/java/de/hsel/itech/db/pojo/ShoppingCart.java
+++ b/src/main/java/de/hsel/itech/db/pojo/ShoppingCart.java
@@ -19,7 +19,7 @@ import lombok.RequiredArgsConstructor;
 public class ShoppingCart {
 
     private long id;
-    @NonNull private Customer customer;
+    @NonNull private User user;
     @NonNull private Book article;
     @NonNull private int count;
 }
\ No newline at end of file
diff --git a/src/main/java/de/hsel/itech/db/pojo/Customer.java b/src/main/java/de/hsel/itech/db/pojo/User.java
similarity index 82%
rename from src/main/java/de/hsel/itech/db/pojo/Customer.java
rename to src/main/java/de/hsel/itech/db/pojo/User.java
index 566afd3..e24b2e9 100644
--- a/src/main/java/de/hsel/itech/db/pojo/Customer.java
+++ b/src/main/java/de/hsel/itech/db/pojo/User.java
@@ -6,7 +6,7 @@ import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
 
 /**
- * POJO for Customer.
+ * POJO for User.
  *
  * @author Johannes Theiner
  * @version 0.1
@@ -16,11 +16,11 @@ import lombok.RequiredArgsConstructor;
 @Data
 @AllArgsConstructor
 @RequiredArgsConstructor
-public class Customer {
+public class User {
 
     private long id;
     @NonNull private String email;
     @NonNull private String name;
     @NonNull private String password;
-    @NonNull private boolean admin;
+    @NonNull private short type;
 }
\ No newline at end of file