Github user vanzin commented on a diff in the pull request: https://github.com/apache/spark/pull/15172#discussion_r87295803 --- Diff: common/network-common/src/main/java/org/apache/spark/network/sasl/SaslClientBootstrap.java --- @@ -88,9 +90,20 @@ public void doBootstrap(TransportClient client, Channel channel) { throw new RuntimeException( new SaslException("Encryption requests by negotiated non-encrypted connection.")); } - SaslEncryption.addToChannel(channel, saslClient, conf.maxSaslEncryptedBlockSize()); + + if (conf.aesEncryptionEnabled()) { + // Generate a request config message to send to server. + AesConfigMessage configMessage = AesCipher.createConfigMessage(conf); + ByteBuffer buf = configMessage.encodeMessage(); + client.sendRpcSync(buf, conf.saslRTTimeoutMs()); --- End diff -- Wait. Isn't this now sending the keys in plain text over the wire? I commented before that using 3des to encrypt the keys is sub-optimal, but I didn't mean for you to remove the encryption altogether.
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