Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/15172#discussion_r87337029
--- Diff:
common/network-common/src/main/java/org/apache/spark/network/sasl/aes/AesConfigMessage.java
---
@@ -0,0 +1,104 @@
+/*
+ * 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.spark.network.sasl.aes;
+
+import java.nio.ByteBuffer;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+
+import org.apache.spark.network.protocol.Encodable;
+import org.apache.spark.network.protocol.Encoders;
+
+/**
+ * The AES cipher options for encryption negotiation.
+ */
+public class AesConfigMessage implements Encodable {
+ /** Serialization tag used to catch incorrect payloads. */
+ private static final byte TAG_BYTE = (byte) 0xEB;
+
+ public int keySize;
+ public byte[] inKey;
+ public byte[] outKey;
+ public byte[] inIv;
+ public byte[] outIv;
+
+ public AesConfigMessage(int keySize, byte[] inKey, byte[] inIv, byte[]
outKey, byte[] outIv) {
+ this.keySize = keySize;
+ this.inKey = inKey;
+ this.inIv = inIv;
+ this.outKey = outKey;
+ this.outIv = outIv;
+ }
+
+ @Override
+ public int encodedLength() {
+ return 1 + 4 + ((inKey != null && inIv != null && outKey != null &&
outIv != null) ?
--- End diff --
nit: since keySize is just `inKey.length`. You don't need to send it via
the network.
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