Github user alopresto commented on a diff in the pull request:
https://github.com/apache/nifi/pull/834#discussion_r75751891
--- Diff:
nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-properties-loader/src/main/java/org/apache/nifi/properties/AESSensitivePropertyProvider.java
---
@@ -0,0 +1,252 @@
+/*
+ * 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.nifi.properties;
+
+import java.nio.charset.StandardCharsets;
+import java.security.InvalidAlgorithmParameterException;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+import java.security.NoSuchProviderException;
+import java.security.SecureRandom;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+import javax.crypto.BadPaddingException;
+import javax.crypto.Cipher;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.SecretKey;
+import javax.crypto.spec.IvParameterSpec;
+import javax.crypto.spec.SecretKeySpec;
+import org.apache.commons.lang3.StringUtils;
+import org.bouncycastle.util.encoders.Base64;
+import org.bouncycastle.util.encoders.DecoderException;
+import org.bouncycastle.util.encoders.EncoderException;
+import org.bouncycastle.util.encoders.Hex;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class AESSensitivePropertyProvider implements
SensitivePropertyProvider {
+
+ private static final Logger logger =
LoggerFactory.getLogger(AESSensitivePropertyProvider.class);
+
+ private static final String IMPLEMENTATION_NAME = "AES Sensitive
Property Provider";
+ private static final String IMPLEMENTATION_KEY = "aes/gcm/";
+ private static final String ALGORITHM = "AES/GCM/NoPadding";
+ private static final String PROVIDER = "BC";
+ private static final String DELIMITER = "||"; // "|" is not a valid
Base64 character, so ensured not to be present in cipher text
+ private static final int IV_LENGTH = 12;
+ private static final int MIN_CIPHER_TEXT_LENGTH = IV_LENGTH * 4 / 3 +
DELIMITER.length() + 1;
+
+ private Cipher cipher;
+ private SecretKey key;
+
+ public AESSensitivePropertyProvider() {
+
+ }
+
+ public AESSensitivePropertyProvider(String key) throws
NoSuchPaddingException, NoSuchAlgorithmException, NoSuchProviderException {
+ setKey(key);
+ }
+
+ public AESSensitivePropertyProvider(byte[] key) throws
NoSuchPaddingException, NoSuchAlgorithmException, NoSuchProviderException {
+ this(key == null ? "" : Hex.toHexString(key));
+ }
+
+ public void setKey(String keyHex) throws
SensitivePropertyProtectionException {
+ if (!isKeySet()) {
+ if (keyHex == null || keyHex.length() == 0) {
--- End diff --
Will do.
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