svn commit: r1443325 - /camel/trunk/camel-core/src/main/java/org/apache/camel/converter/stream/CipherPair.java

[ni...@apache.org]

Author: ningjiang
Date: Thu Feb  7 07:12:52 2013
New Revision: 1443325

URL: http://svn.apache.org/viewvc?rev=1443325&view=rev
Log:
CAMEL-6040 Added the missed file

Added:
    camel/trunk/camel-core/src/main/java/org/apache/camel/converter/stream/CipherPair.java

Added: camel/trunk/camel-core/src/main/java/org/apache/camel/converter/stream/CipherPair.java
URL: http://svn.apache.org/viewvc/camel/trunk/camel-core/src/main/java/org/apache/camel/converter/stream/CipherPair.java?rev=1443325&view=auto
==============================================================================
--- camel/trunk/camel-core/src/main/java/org/apache/camel/converter/stream/CipherPair.java (added)
+++ camel/trunk/camel-core/src/main/java/org/apache/camel/converter/stream/CipherPair.java Thu Feb  7 07:12:52 2013
@@ -0,0 +1,73 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.camel.converter.stream;
+
+import java.security.GeneralSecurityException;
+import java.security.Key;
+import java.security.SecureRandom;
+
+import javax.crypto.Cipher;
+import javax.crypto.KeyGenerator;
+import javax.crypto.spec.IvParameterSpec;
+
+/**
+ * A class to hold a pair of encryption and decryption ciphers.
+ */
+public class CipherPair {
+    private String transformation;
+    private Cipher enccipher;
+    private Cipher deccipher;
+    
+    public CipherPair(String transformation) throws GeneralSecurityException {
+        this.transformation = transformation;
+        
+        int d = transformation.indexOf('/');
+        String a;
+        if (d > 0) {
+            a = transformation.substring(0, d);
+        } else {
+            a = transformation;
+        }
+        try {
+            KeyGenerator keygen = KeyGenerator.getInstance(a);
+            keygen.init(new SecureRandom());
+            Key key = keygen.generateKey();
+            enccipher = Cipher.getInstance(transformation);
+            deccipher = Cipher.getInstance(transformation);
+            enccipher.init(Cipher.ENCRYPT_MODE, key);
+            final byte[] ivp = enccipher.getIV();
+            deccipher.init(Cipher.DECRYPT_MODE, key, ivp == null ? null : new IvParameterSpec(ivp));
+        } catch (GeneralSecurityException e) {
+            enccipher = null;
+            deccipher = null;
+            throw e;
+        }
+    }
+    
+    public String getTransformation() {
+        return transformation;
+    }
+    
+    public Cipher getEncryptor() {
+        return enccipher;
+    }
+    
+    public Cipher getDecryptor() {
+        return deccipher;
+    }
+}