init code

[vfc/nfvo/wfengine.git] / wso2 / common-util / src / main / java / org / openo / baseservice / encrypt / cbb / CipherCreator.java

diff --git a/wso2/common-util/src/main/java/org/openo/baseservice/encrypt/cbb/CipherCreator.java b/wso2/common-util/src/main/java/org/openo/baseservice/encrypt/cbb/CipherCreator.java
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+++ b/wso2/common-util/src/main/java/org/openo/baseservice/encrypt/cbb/CipherCreator.java
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+/*
+ * Copyright 2016 Huawei Technologies Co., Ltd.
+ *
+ * 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 org.openo.baseservice.encrypt.cbb;
+
+import org.openo.baseservice.encrypt.cbb.impl.AesCipherFactory;
+import org.openo.baseservice.encrypt.cbb.inf.AbstractCipher;
+import org.openo.baseservice.encrypt.cbb.inf.AbstractCipherFactory;
+
+/**
+ * Helps create cipher instances from factory.<br/>
+ * <p>
+ * Creates the cipher instances using cipher factory. By default it uses AesCipherFactory.
+ * Can be changed through spring.
+ * </p>
+ * 
+ * @author
+ * @version   08-Jun-2016
+ */
+public final class CipherCreator {
+
+    private static CipherCreator instance = new CipherCreator();
+
+    private AbstractCipherFactory factory = new AesCipherFactory();
+
+    /**
+     * Constructor<br/>
+     * <p>
+     * private
+     * </p>
+     * 
+     * @since  
+     */
+    private CipherCreator() {
+
+    }
+
+    /**
+     * Singleton instance.
+     * <br/>
+     * 
+     * @return
+     * @since  
+     */
+    public static CipherCreator instance() {
+        return instance;
+    }
+
+    /**
+     * Creates cipher with default key.
+     * <br/>
+     * 
+     * @return cipher instance with default key.
+     * @since  
+     */
+    public AbstractCipher create() {
+        return factory.createCipherManager();
+    }
+
+    /**
+     * Creates cipher instance with a key.
+     * <br/>
+     * 
+     * @param key the key to be used for encryption and decryption.
+     * @return cipher instance with specified key.
+     * @since  
+     */
+    public AbstractCipher create(final String key) {
+        return factory.createCipherManager(key);
+    }
+
+    /**
+     * Sets the cipher factory instance.
+     * <br/>
+     * 
+     * @param factory cipher factory.
+     * @since  
+     */
+    public void setFactory(final AbstractCipherFactory factory) {
+        this.factory = factory;
+    }
+
+}