pitrou commented on code in PR #48336:
URL: https://github.com/apache/arrow/pull/48336#discussion_r2589729909
##########
cpp/src/parquet/arrow/generate_fuzz_corpus.cc:
##########
@@ -146,8 +145,77 @@ std::vector<WriteConfig> GetWriteConfigurations() {
return configs;
}
-Result<std::vector<Column>> ExampleColumns(int32_t length,
- double null_probability = 0.2) {
+std::vector<WriteConfig> GetEncryptedWriteConfigurations(const
::arrow::Schema& schema) {
+ using ::parquet::ColumnEncryptionProperties;
+ using ::parquet::ColumnPathToEncryptionPropertiesMap;
+ using ::parquet::FileEncryptionProperties;
+ using ::parquet::fuzzing::internal::MakeEncryptionKey;
+
+ auto file_encryption_builder = [&]() {
+ auto footer_key = MakeEncryptionKey();
+ ::parquet::FileEncryptionProperties::Builder builder(footer_key.key);
+ builder.footer_key_metadata(footer_key.key_metadata);
+ return builder;
+ };
+
+ std::vector<std::shared_ptr<FileEncryptionProperties>> file_encryptions;
+
+ // Uniform encryption
+ file_encryptions.push_back(file_encryption_builder().build());
+ // Uniform encryption with plaintext footer
+
file_encryptions.push_back(file_encryption_builder().set_plaintext_footer()->build());
+ // Columns encrypted with individual keys
+ {
+ ColumnPathToEncryptionPropertiesMap column_map;
+ for (const auto& field : schema.fields()) {
+ // Skip nested columns (they will not be encrypted) until GH-41246 makes
+ // their configuration easier.
Review Comment:
FTR @EnricoMi :-)
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