[SPARK-47172][CORE][3.5] Add support for AES-GCM for RPC encryption

### What changes were proposed in this pull request?

This change adds AES-GCM as an optional AES cipher mode for RPC encryption. The current default is using AES-CTR without any authentication. That would allow someone on the network to easily modify RPC contents on the wire and impact Spark behavior. See [SPARK-47172](https://issues.apache.org/jira/browse/SPARK-47172) for more details.

### Why are the changes needed?

The current default is using AES-CTR without any authentication. That would allow someone on the network to easily modify RPC contents on the wire and impact Spark behavior.

### Does this PR introduce _any_ user-facing change?

Yes, it adds an additional configuration flag is reflected in the documentation.

### How was this patch tested?

Existing unit tests are all ensured to pass. New unit tests are written to explicitly test GCM support and to verify that modifying ciphertext content will cause an exception and fail.

`build/sbt "network-common/test:testOnly"`
`build/sbt "network-common/test:testOnly org.apache.spark.network.crypto.AuthIntegrationSuite"` `build/sbt "network-common/test:testOnly org.apache.spark.network.crypto.AuthEngineSuite"`

### Was this patch authored or co-authored using generative AI tooling?

Nope.

Closes #47060 from sweisdb/SPARK-47172-3.5.

Authored-by: Steve Weis <steve.weis@databricks.com>
Signed-off-by: Yi Wu <yi.wu@databricks.com>

Author: sweisdb

common/network-common/src/main/java/org/apache/spark/network/crypto/AuthEngine.java

@@ -45,6 +45,8 @@ class AuthEngine implements Closeable {
   public static final byte[] INPUT_IV_INFO = "inputIv".getBytes(UTF_8);
   public static final byte[] OUTPUT_IV_INFO = "outputIv".getBytes(UTF_8);
   private static final String MAC_ALGORITHM = "HMACSHA256";
+  private static final String LEGACY_CIPHER_ALGORITHM = "AES/CTR/NoPadding";
+  private static final String CIPHER_ALGORITHM = "AES/GCM/NoPadding";
   private static final int AES_GCM_KEY_SIZE_BYTES = 16;
   private static final byte[] EMPTY_TRANSCRIPT = new byte[0];
   private static final int UNSAFE_SKIP_HKDF_VERSION = 1;
@@ -227,12 +229,19 @@ private TransportCipher generateTransportCipher(
         OUTPUT_IV_INFO,  // This is the HKDF info field used to differentiate IV values
         AES_GCM_KEY_SIZE_BYTES);
     SecretKeySpec sessionKey = new SecretKeySpec(derivedKey, "AES");
-    return new TransportCipher(
-        cryptoConf,
-        conf.cipherTransformation(),
-        sessionKey,
-        isClient ? clientIv : serverIv,  // If it's the client, use the client IV first
-        isClient ? serverIv : clientIv);
+    if (LEGACY_CIPHER_ALGORITHM.equalsIgnoreCase(conf.cipherTransformation())) {
+      return new CtrTransportCipher(
+          cryptoConf,
+          sessionKey,
+          isClient ? clientIv : serverIv,  // If it's the client, use the client IV first
+          isClient ? serverIv : clientIv);
+    } else if (CIPHER_ALGORITHM.equalsIgnoreCase(conf.cipherTransformation())) {
+      return new GcmTransportCipher(sessionKey);
+    } else {
+      throw new IllegalArgumentException(
+              String.format("Unsupported cipher mode: %s. %s and %s are supported.",
+                      conf.cipherTransformation(), CIPHER_ALGORITHM, LEGACY_CIPHER_ALGORITHM));
+    }
   }
 
   private byte[] getTranscript(AuthMessage... encryptedPublicKeys) {