smaheshwar-pltr commented on code in PR #13225:
URL: https://github.com/apache/iceberg/pull/13225#discussion_r2486952515
##########
core/src/main/java/org/apache/iceberg/rest/RESTTableOperations.java:
##########
@@ -166,7 +208,67 @@ public void commit(TableMetadata base, TableMetadata
metadata) {
@Override
public FileIO io() {
- return io;
+ if (encryptionKeyId == null) {
+ return io;
+ }
+
+ if (encryptingFileIO == null) {
+ encryptingFileIO = EncryptingFileIO.combine(io, encryption());
+ }
+
+ return encryptingFileIO;
+ }
+
+ @Override
+ public EncryptionManager encryption() {
+ if (encryptionManager != null) {
+ return encryptionManager;
+ }
+
+ if (encryptionKeyId != null) {
+ if (kmsClient == null) {
+ throw new RuntimeException(
+ "Cant create encryption manager, because key management client is
not set");
+ }
+
+ Map<String, String> tableProperties = Maps.newHashMap();
+ tableProperties.put(TableProperties.ENCRYPTION_TABLE_KEY,
encryptionKeyId);
+ tableProperties.put(
+ TableProperties.ENCRYPTION_DEK_LENGTH,
String.valueOf(encryptionDekLength));
+ encryptionManager =
+ EncryptionUtil.createEncryptionManager(
+ encryptedKeysFromMetadata, tableProperties, kmsClient);
+ } else {
+ return PlaintextEncryptionManager.instance();
+ }
+
+ return encryptionManager;
+ }
+
+ private void encryptionPropsFromMetadata(TableMetadata metadata) {
Review Comment:
Thanks all. I agree with @singhpk234 on metadata JSONs residing in object
storage, though perhaps there are larger discussions to be had here about
whether it's necessary, and I suppose the suggestion of encrypting metadata
JSONs might limit the portability it would bring.
> Encryption properties is a part of problem. It is the biggest part (can be
exploited for data leaks), but another part are all other fields in the
metadata - since they can be manipulated for replay attacks and other stuff
that breaks the table integrity.
@ggershinsky, to aid my understanding here: for the Hive case it's _only_
the table properties that are stored in HMS, right? Is there a follow-up there
or is this sufficient for the threat model? If so, I think we're back to the
REST catalog checking those table properties are correct before returning them
(I feel that `config` is generally good for things like this, but @singhpk234
raises a good point about it being a table property).
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