Do not expose length of compressed chunks in output file. Add fuzz testing.#5
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JoergDF
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May 22, 2026
JoergDF
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- Re-segment compressed, variable sized chunks to fixed sized chunks which are then encrypted. Then the output file does not contain a length indicator, so it cannot reveal indirect information about the compressed data.
- For that refactor thread usage to a pipeline architecture, which also makes better use of cpu cores and can improve performance.
- Adapt and add unit tests.
- Fix add overflow in file splitting of write_file(). Revealed by fuzz test.
- Canonicalize input paths from command line.
- Increment file format version to v4.
- Re-segment compressed, variable sized chunks to fixed sized chunks which are then encrypted. Then the output file does not contain a length indicator, so it cannot reveal indirect information about the compressed data. - For that refactor thread usage to a pipeline architecture, which also makes better use of cpu cores and can improve performance. - Adapt and add unit tests.
- Fix memory leak in both resegment methods: Replace split_off()/replace() with drain(). - Optimize channel sizes and remove unnecessary channel drops (missing channel error seen once). - Replace unnecessary BTreeMap usage with HashMap. - Add fuzz testing. - Fix add overflow in file splitting of write_file(). Revealed by fuzz test.
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