1 files changed, 95 insertions, 0 deletions
diff --git a/common/src/main/java/org/openecomp/mso/utils/CryptoUtils.java b/common/src/main/java/org/openecomp/mso/utils/CryptoUtils.java
new file mode 100644
index 0000000000..c926903cf3
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+++ b/common/src/main/java/org/openecomp/mso/utils/CryptoUtils.java
@@ -0,0 +1,95 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * OPENECOMP - MSO
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.mso.utils;
+
+
+
+import java.io.IOException;
+import java.security.GeneralSecurityException;
+import java.security.NoSuchAlgorithmException;
+
+import javax.crypto.Cipher;
+import javax.crypto.spec.SecretKeySpec;
+
+
+/**
+ * CryptoUtils adapted from RTTP client.
+ * 
+ */
+public final class CryptoUtils {
+
+    public static final String AES = "AES";
+
+    /**
+     * encrypt a value and generate a keyfile
+     * if the keyfile is not found then a new one is created
+     * 
+     * @throws GeneralSecurityException
+     */
+    public static String encrypt (String value, String keyString) throws GeneralSecurityException {
+        SecretKeySpec sks = getSecretKeySpec (keyString);
+        Cipher cipher = Cipher.getInstance (CryptoUtils.AES);
+        cipher.init (Cipher.ENCRYPT_MODE, sks, cipher.getParameters ());
+        byte[] encrypted = cipher.doFinal (value.getBytes ());
+        return byteArrayToHexString (encrypted);
+    }
+
+    /**
+     * decrypt a value
+     * 
+     * @throws GeneralSecurityException
+     */
+    public static String decrypt (String message, String keyString) throws GeneralSecurityException {
+        SecretKeySpec sks = getSecretKeySpec (keyString);
+        Cipher cipher = Cipher.getInstance (CryptoUtils.AES);
+        cipher.init (Cipher.DECRYPT_MODE, sks);
+        byte[] decrypted = cipher.doFinal (hexStringToByteArray (message));
+        return new String (decrypted);
+    }
+
+    private static SecretKeySpec getSecretKeySpec (String keyString) throws NoSuchAlgorithmException {
+        byte[] key = hexStringToByteArray (keyString);
+        SecretKeySpec sks = new SecretKeySpec (key, CryptoUtils.AES);
+        return sks;
+    }
+
+    public static String byteArrayToHexString (byte[] b) {
+        StringBuffer sb = new StringBuffer (b.length * 2);
+        for (int i = 0; i < b.length; i++) {
+            int v = b[i] & 0xff;
+            if (v < 16) {
+                sb.append ('0');
+            }
+            sb.append (Integer.toHexString (v));
+        }
+        return sb.toString ().toUpperCase ();
+    }
+
+    private static byte[] hexStringToByteArray (String s) {
+        byte[] b = new byte[s.length () / 2];
+        for (int i = 0; i < b.length; i++) {
+            int index = i * 2;
+            int v = Integer.parseInt (s.substring (index, index + 2), 16);
+            b[i] = (byte) v;
+        }
+        return b;
+    }
+}