…eration.

Added BC dependency to nifi-persistent-provenance-repository module.

…der w/ 2 impls, Encryptor skeleton, and exceptions/utilities).

Reorganized tests to proper path.

… Pausing to re-evaluate because work may need to be done at lower level (EventWriter/EventReader -- byte/Object serialization).

…t intercepting SchemaRecordReader/Writer serialization (no updates to schema necessary).

…ity-utils to include in nifi-data-provenance-utils.

Resolved RAT and checkstyle issues.
All tests pass.

…nhanced error checking and guard controls).

…ap optimization.

…ption metadata serialization.

…ved cached ciphers to allow non-repeating IVs).

Added unit tests.

Added validity checks for algorithm and version in AESProvenanceEventEncryptor.
Added unit tests.

Refactored encryptor composition.
Added unit tests.

…nce repository.

Added utility methods for validation.
Added unit tests.

…cryption.

Added nifi.provenance.repository.encryption.key to default sensitive keys and updated unit tests and test resources.
Added method to correctly calculate protected percentage of sensitive keys (unpopulated keys are no longer counted against protection %).

Moved getBestEventIdentifier() from StandardProvenanceEventRecord to ProvenanceEventRecord interface and added delegate in all implementations to avoid ClassCastException from multiple classloaders.
Initialized IV before cipher to suppress unnecessary warnings.
Added utility method to read encrypted provenance keys from key provider file.
Suppressed logging of event record details in LuceneEventIndex.
Added logic to create EncryptedSchemaRecordReader (if supported) in RecordReaders.
Cleaned up EncryptedSchemaRecordReader and EncryptedSchemaRecordWriter.
Added keyProvider, recordReaderFactory, and recordWriterFactory initialization to EncryptedWriteAheadProvenanceRepository to provide complete interceptor implementation.
Added logic to RepositoryConfiguration to load encryption-related properties if necessary.
Refactored WriteAheadProvenanceRepository to allow subclass implementation.
Registered EncryptedWAPR in ProvenanceRepository implementations.
Added unit tests for EWAPR.
Added new nifi.properties keys for encrypted provenance repository.

…ation of arrays.

Added unit test demonstrating performance improvement.

…ency with Mark Payne's feedback.

Cleaned up commented code.

Refactored StaticKeyProvider and FileBasedKeyProvider to reduce duplicate code.
Added helper methods in NiFiProperties to read multiple key definitions for StaticKeyProvider.
Fixed undetected NPE in tests (storing null value into properties).
Added unit tests.

…rayCopy comparison.

…to trigger Maven running Groovy unit tests.