1 files changed, 82 insertions, 0 deletions
diff --git a/deployment/heat/onap-rke/scripts/Crypto.java b/deployment/heat/onap-rke/scripts/Crypto.java
new file mode 100644
index 000000000..a9bad509a
--- /dev/null
+++ b/deployment/heat/onap-rke/scripts/Crypto.java
@@ -0,0 +1,82 @@
+import javax.crypto.Cipher;
+import javax.crypto.spec.GCMParameterSpec;
+import javax.crypto.spec.SecretKeySpec;
+import java.security.GeneralSecurityException;
+import java.security.SecureRandom;
+import java.util.Arrays;
+
+public class Crypto {
+
+    private static final String AES = "AES";
+    private static final int GCM_TAG_LENGTH = 16;
+    private static final int GCM_IV_LENGTH = 12;
+    private static final String AES_GCM_NO_PADDING = "AES/GCM/NoPadding";
+
+    public static void main(String[] args) {
+    	if(args.length != 2) {
+    		System.out.println("Usage: java Crypto value_to_encrypt key");
+    		System.out.println("exit(1)");
+    		System.exit(1);
+    	}
+
+    	String value = args[0];
+    	String key = args[1];
+    	String encrypted = encryptCloudConfigPassword(value, key);
+    	System.out.println(encrypted);
+    }
+
+    /**
+     * 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(AES_GCM_NO_PADDING);
+        byte[] initVector = new byte[GCM_IV_LENGTH];
+        (new SecureRandom()).nextBytes(initVector);
+        GCMParameterSpec spec = new GCMParameterSpec(GCM_TAG_LENGTH * java.lang.Byte.SIZE, initVector);
+        cipher.init(Cipher.ENCRYPT_MODE, sks, spec);
+        byte[] encoded = value.getBytes(java.nio.charset.StandardCharsets.UTF_8);
+        byte[] cipherText = new byte[initVector.length + cipher.getOutputSize(encoded.length)];
+        System.arraycopy(initVector, 0, cipherText, 0, initVector.length);
+        cipher.doFinal(encoded, 0, encoded.length, cipherText, initVector.length);
+        return byteArrayToHexString(cipherText);
+    }
+
+    public static String encryptCloudConfigPassword(String message, String key) {
+    	try {
+	    	return Crypto.encrypt(message, key);
+	    } catch (GeneralSecurityException e) {
+          return null;
+      }
+    }
+
+    private static SecretKeySpec getSecretKeySpec (String keyString) {
+        byte[] key = hexStringToByteArray (keyString);
+        return new SecretKeySpec (key, AES);
+    }
+
+    public static String byteArrayToHexString (byte[] b) {
+        StringBuilder sb = new StringBuilder(b.length * 2);
+        for (byte aB : b) {
+            int v = aB & 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;
+    }
+}
+\ No newline at end of file