NikitolProject
f2f3ed42da
feat(04-01): implement Kotlin archive decoder with full decode pipeline
- 40-byte header parsing with magic byte, version, and flags validation
- Variable-length TOC entry parsing with little-endian ByteBuffer helpers
- HMAC-SHA-256 verification BEFORE decryption (Encrypt-then-MAC)
- AES-256-CBC decryption via javax.crypto with PKCS5Padding
- Gzip decompression via java.util.zip when compression_flag == 1
- SHA-256 checksum verification after decompression
- Hardcoded 32-byte key matching src/key.rs exactly
- CLI main() for standalone JAR usage
- Zero third-party dependencies (only Android SDK / JVM stdlib)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>