Github user winningsix commented on a diff in the pull request:
https://github.com/apache/spark/pull/8880#discussion_r44355437
--- Diff:
core/src/main/scala/org/apache/spark/crypto/CommonConfigurationKeys.scala ---
@@ -0,0 +1,48 @@
+/*
+ * 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.crypto
+
+import org.apache.hadoop.io.Text
+
+/**
+ * Constant variables
+ */
+private[spark] object CommonConfigurationKeys {
+ val SPARK_SHUFFLE_TOKEN = new Text("SPARK_SHUFFLE_TOKEN")
+ val SPARK_SECURITY_CRYPTO_BUFFER_SIZE_DEFAULT = 8192
+ val SPARK_SECURITY_CRYPTO_CIPHER_SUITE_DEFAULT = "AES/CTR/NoPadding"
+ val SPARK_SECURITY_CRYPTO_CIPHER_SUITE_KEY =
"spark.security.crypto.cipher.suite"
+ val SPARK_SECURITY_CRYPTO_CODEC_CLASSES_KEY_PREFIX =
"spark.security.crypto.codec.classes"
+ val SPARK_SECURITY_CRYPTO_CODEC_CLASSES_AES_CTR_NOPADDING_KEY =
--- End diff --
There are many algorithms for crypto which is
configurable(SPARK_SHUFFLE_CRYPTO_CIPHER_SUITE_DEFAULT). So when we provide a
class served as the crypto codec provider, this class doesn't need to implement
all the algorithms. You can refer the test cases newly added in
CryptoCodecSuite to see how we use these configurations.
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