# Third-party notices

- **bsdiff/bspatch** — Copyright 2003–2005 Colin Percival. The redistribution conditions
  and disclaimer are retained in `ApkPatchLibraryServer/jni/com_cundong_utils_DiffUtils.c`
  and `ApkPatchLibrary/src/main/cpp/bspatch.c`.
- **bzip2** — Copyright Julian Seward and contributors. Original notices are retained
  in `ApkPatchLibrary/src/main/cpp/bzip2/` and the complete license in `licenses/bzip2-1.0.6.txt`; both host and Android builds use this one copy.
- **Gradle Wrapper** — Apache-2.0; generated wrapper scripts retain their notices.

The locally supplied Taobao APKs are external test inputs, excluded from version control
and CI artifacts. The project's Apache-2.0 license does not relicense those APKs.