updated license header, merged shared-security

util/src/main/java/de/muehlencord/shared/util/Luhn.java

@@ -0,0 +1,66 @@
+/* 
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package de.muehlencord.shared.util;
+
+import static java.lang.Integer.parseInt;
+import static java.lang.String.valueOf;
+
+/**
+ *
+ * @author Joern Muehlencord (joern@muehlencord.de)
+ */
+public class Luhn {
+
+    public static boolean validateNumber(final String numberStr) {
+        return (computeCheckDigit(numberStr, true) == 0);
+    }
+
+    public static int computeCheckDigit(final String numberStr, final boolean isCheckDigitAttached) {
+        boolean doubleNextDigit = !isCheckDigitAttached;
+        int sum = 0;
+
+        // iterate from right digit to left
+        for (int currentDigitPos = numberStr.length() - 1; currentDigitPos >= 0; currentDigitPos--) {
+            int currentDigit = parseInt(valueOf(numberStr.charAt(currentDigitPos)));
+            if (doubleNextDigit) {
+                currentDigit = currentDigit * 2;
+            }
+            sum += singleDigitSum(currentDigit);
+            doubleNextDigit = !doubleNextDigit;
+        }
+
+        if ((sum % 10) > 0) {
+            return (10 - (sum % 10));
+        } else {
+            return 0;
+        }
+    }
+
+    private static int singleDigitSum(final int value) {
+        if (value < 10) {
+            return value;
+        } else {
+            return singleDigitSum((value / 10) + (value % 10));
+        }
+    }
+}
+
+/**
+ * History:
+ *
+ * $$Log$$
+ *
+ */

util/src/main/java/de/muehlencord/shared/util/PasswordUtil.java

@@ -0,0 +1,83 @@
+/* 
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package de.muehlencord.shared.util;
+
+import java.security.SecureRandom;
+import org.bouncycastle.crypto.generators.SCrypt;
+import org.bouncycastle.util.encoders.Base64;
+
+/**
+ *
+ * @author Joern Muehlencord (joern@muehlencord.de)
+ */
+public class PasswordUtil {
+
+    private final static SecureRandom SECURERANDOM = new SecureRandom();
+
+    private final static int CPU_MEMORY_COST_PARAMETER = 16384;
+    private final static int BLOCK_SIZE = 8;
+    private final static int PARALLELIZATION = 1;
+    private final static int KEY_LENGTH = 32;
+
+    private final String systemsalt;
+
+    public PasswordUtil(String systemSaltBase64Coded) {
+        // TODO make some tests like lengths etc
+        this.systemsalt = systemSaltBase64Coded;
+    }
+
+    public String getHash(String clearPassword) {
+
+        // generate user salt
+        byte[] userSaltBytes = new byte[32];
+        SECURERANDOM.nextBytes(userSaltBytes);
+        String userSalt = new String(Base64.encode(userSaltBytes));
+
+        // create passwordhash with salt
+        String passwordHash = getPasswordHash(systemsalt, userSalt, clearPassword);
+
+        StringBuilder sb = new StringBuilder();
+        sb.append(userSalt);
+        sb.append(":");
+        sb.append(passwordHash);
+
+        return sb.toString();
+    }
+
+    public boolean matches(String clearPassword, String passwordHashWithSalt) {
+        if (!passwordHashWithSalt.contains(":")) {
+            // TODO add exception handling
+            return false;
+        }
+
+        String userSalt = passwordHashWithSalt.substring(0, passwordHashWithSalt.indexOf(":"));
+        String passwordHash = passwordHashWithSalt.substring(passwordHashWithSalt.indexOf(":")+1);
+        
+        String validationHash = getPasswordHash(systemsalt, userSalt, clearPassword);
+        return validationHash.equals(passwordHash);
+    }
+
+    private String getPasswordHash(String systemSaltBase64, String userSaltBase64, String clearPassword) {
+        byte[] systemSalt = systemSaltBase64.getBytes();
+        byte[] userSalt = userSaltBase64.getBytes();
+        byte[] salt = new byte[systemSalt.length + userSalt.length];
+
+        System.arraycopy(systemSalt, 0, salt, 0, systemSalt.length);
+        System.arraycopy(userSalt, 0, salt, systemSalt.length, userSalt.length);
+
+        return new String(Base64.encode(SCrypt.generate(clearPassword.getBytes(), salt, CPU_MEMORY_COST_PARAMETER, BLOCK_SIZE, PARALLELIZATION, KEY_LENGTH)));
+    }
+}

util/src/main/java/de/muehlencord/shared/util/SecurityException.java

@@ -0,0 +1,41 @@
+/* 
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package de.muehlencord.shared.util;
+
+/**
+ *
+ * @author joern@muehlencord.de
+ */
+public class SecurityException extends Exception {
+  
+  public SecurityException() {
+    super ("An error occured during a security action");
+  }
+  
+  public SecurityException(String msg) {
+    super (msg);
+  }
+  
+  public SecurityException(String msg, Throwable cause) {
+    super(msg, cause);
+  }
+  
+  public SecurityException(Throwable cause) {
+    super (cause);
+  }
+  
+
+}

util/src/main/java/de/muehlencord/shared/util/file/BOM.java

@@ -24,7 +24,7 @@ import java.util.Map;
  * Defines possbile file Byte Order Marks used in files.
  *
  * @see http://en.wikipedia.org/wiki/Byte-order_mark
- * @author joern.muehlencord
+ * @author Joern Muehlencord (joern@muehlencord.de)
  */
 public class BOM {
 

util/src/main/java/de/muehlencord/shared/util/file/BOMStripperInputStream.java

@@ -22,7 +22,7 @@ import java.io.PushbackInputStream;
 /**
  * Stream which removes the leading BOM from an input stream
  *
- * @author joern.muehlencord
+ * @author Joern Muehlencord (joern@muehlencord.de)
  */
 public class BOMStripperInputStream extends PushbackInputStream {
 

util/src/test/java/de/muehlencord/shared/util/DefaultTest.java

@@ -1,19 +1,17 @@
 /* 
- * Copyright (C) 2019 Joern Muehlencord (joern@muehlencord.de)
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ *      http://www.apache.org/licenses/LICENSE-2.0
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 package de.muehlencord.shared.util;
 

util/src/test/java/de/muehlencord/shared/util/LuhnTest.java

@@ -0,0 +1,61 @@
+/* 
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package de.muehlencord.shared.util;
+
+import static de.muehlencord.shared.util.Luhn.computeCheckDigit;
+import static de.muehlencord.shared.util.Luhn.validateNumber;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import org.junit.jupiter.api.Test;
+
+/**
+ *
+ * @author Joern Muehlencord (joern@muehlencord.de)
+ */
+public class LuhnTest {
+
+    public LuhnTest() {
+    }
+
+    @Test
+    public void testComputeCheckDigit() {
+        String testString = "7992739871";
+        int checkNumber = computeCheckDigit(testString, false);
+        assertTrue(checkNumber == 3);
+    }
+
+    @Test
+    public void testValidateNumber() {
+        assertFalse(validateNumber("79927398710"));
+        assertFalse(validateNumber("79927398711"));
+        assertFalse(validateNumber("79927398712"));
+        assertTrue(validateNumber("79927398713"));
+        assertFalse(validateNumber("79927398714"));
+        assertFalse(validateNumber("79927398715"));
+        assertFalse(validateNumber("79927398716"));
+        assertFalse(validateNumber("79927398717"));
+        assertFalse(validateNumber("79927398718"));
+        assertFalse(validateNumber("79927398719"));
+    }
+
+}
+
+/**
+ * History:
+ *
+ * $$Log$$
+ *
+ */

util/src/test/java/de/muehlencord/shared/util/OSUtilTest.java

@@ -1,19 +1,17 @@
 /* 
- * Copyright (C) 2019 Joern Muehlencord (joern@muehlencord.de)
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ *      http://www.apache.org/licenses/LICENSE-2.0
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 package de.muehlencord.shared.util;
 

util/src/test/java/de/muehlencord/shared/util/PasswordUtilTest.java

@@ -0,0 +1,59 @@
+/* 
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package de.muehlencord.shared.util;
+
+import java.security.SecureRandom;
+import org.bouncycastle.util.encoders.Base64;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+/**
+ *
+ * @author Joern Muehlencord (joern@muehlencord.de)
+ */
+public class PasswordUtilTest {
+    
+    private static SecureRandom secureRandom;
+    private static String systemSalt64Coded;
+    private static byte[] systemSaltBytes;
+           
+    @BeforeAll
+    public static void init() {
+        secureRandom = new SecureRandom();
+        
+        systemSaltBytes = new byte[32];
+        secureRandom.nextBytes (systemSaltBytes); 
+        systemSalt64Coded = new String(Base64.encode (systemSaltBytes));
+    }    
+    
+
+    @Test
+    public void testGetHash() {
+        PasswordUtil pwUtil = new PasswordUtil(systemSalt64Coded); 
+        
+        String password1 = pwUtil.getHash("password"); 
+        String password2 = pwUtil.getHash("password"); 
+        
+        assertFalse (password1.equals(password2));
+        assertTrue (pwUtil.matches ("password", password1)); 
+        assertFalse (pwUtil.matches ("wrongpassword", password1)); 
+        
+
+    }
+    
+}

util/src/test/java/de/muehlencord/shared/util/StringEncodingExceptionTest.java

@@ -1,19 +1,17 @@
 /* 
- * Copyright (C) 2019 Joern Muehlencord (joern@muehlencord.de)
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ *      http://www.apache.org/licenses/LICENSE-2.0
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 package de.muehlencord.shared.util;
 

util/src/test/java/de/muehlencord/shared/util/StringUtilTest.java

@@ -1,19 +1,17 @@
 /* 
- * Copyright (C) 2019 Joern Muehlencord (joern@muehlencord.de)
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ *      http://www.apache.org/licenses/LICENSE-2.0
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 package de.muehlencord.shared.util;
 

util/src/test/java/de/muehlencord/shared/util/file/FileUtilTest.java

@@ -1,19 +1,17 @@
 /* 
- * Copyright (C) 2019 Joern Muehlencord (joern@muehlencord.de)
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ *      http://www.apache.org/licenses/LICENSE-2.0
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 package de.muehlencord.shared.util.file;