Github user olegz commented on a diff in the pull request:
https://github.com/apache/nifi/pull/163#discussion_r49476661
--- Diff:
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/util/PGPUtil.java
---
@@ -0,0 +1,89 @@
+/*
+ * 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.processors.standard.util;
+
+import org.apache.nifi.processors.standard.EncryptContent;
+import org.bouncycastle.bcpg.ArmoredOutputStream;
+import org.bouncycastle.openpgp.PGPCompressedData;
+import org.bouncycastle.openpgp.PGPCompressedDataGenerator;
+import org.bouncycastle.openpgp.PGPEncryptedData;
+import org.bouncycastle.openpgp.PGPEncryptedDataGenerator;
+import org.bouncycastle.openpgp.PGPException;
+import org.bouncycastle.openpgp.PGPLiteralData;
+import org.bouncycastle.openpgp.PGPLiteralDataGenerator;
+import org.bouncycastle.openpgp.operator.PGPKeyEncryptionMethodGenerator;
+import org.bouncycastle.openpgp.operator.jcajce.JcePGPDataEncryptorBuilder;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.security.SecureRandom;
+import java.util.Date;
+import java.util.zip.Deflater;
+
+/**
+ * This class contains static utility methods to assist with common PGP
operations.
+ */
+public class PGPUtil {
+ private static final Logger logger =
LoggerFactory.getLogger(PGPUtil.class);
+
+ public static final int BUFFER_SIZE = 65536;
+ public static final int BLOCK_SIZE = 4096;
+
+ public static void encrypt(InputStream in, OutputStream out, String
algorithm, String provider, int cipher, String filename,
PGPKeyEncryptionMethodGenerator encryptionMethodGenerator) throws IOException,
PGPException {
+ final boolean isArmored =
EncryptContent.isPGPArmoredAlgorithm(algorithm);
--- End diff --
Given that this is a public method I'd suggest to do a null check for
"algorithm" to avoid NPE in EncryptContent. . .
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