Release Archive Tools 0.2.0

README.md

@@ -6,15 +6,23 @@ Archive Tools is a standalone local-first application in the [add·ideas Toolbox
 
 ## Version 0.1 scope
 
+Binary reads use checked offset arithmetic and bounded cursors. gzip CRC-32 is
+updated incrementally during decompression; temporary previews and downloads
+use explicitly revoked shared Blob URL leases.
+
 - Inspect ZIP and ZIP64 central directories, TAR/USTAR/PAX archives, gzip streams and tar.gz archives.
+- Structurally inspect 7z start/next headers and RAR4/RAR5 plaintext headers under fixed header/count bounds. Header CRCs are checked before metadata is accepted; entry content is never decoded.
 - List normalized paths, kinds, sizes, compression, timestamps, ZIP64 state, CRC-32 values and policy diagnostics.
 - Preview bounded UTF-8 text, hexadecimal bytes and static JPEG/PNG/WebP images. HTML and SVG are shown as text, never rendered as active content.
 - Select regular safe files, verify their bytes and CRC where available, and repackage them into a newly created ZIP. Archive paths are never restored directly to a filesystem.
-- Create deterministic ZIP, TAR/PAX and tar.gz output from local files with sorted paths and normalized metadata.
+- Read and create password-protected ZIP entries with local ZipCrypto or WinZip AES support. AES-256 is the recommended creation mode; legacy ZipCrypto is clearly labelled weak.
+- Create deterministic unencrypted ZIP, TAR/PAX and tar.gz output from local files with sorted paths and normalized metadata. Encrypted ZIPs use fresh random salt and are intentionally not byte-reproducible.
 - Compare two archive inventories by collision-safe path, entry kind, expanded size and CRC-32, independent of container format and timestamps.
 - Download machine-readable inspection and comparison reports.
 
-Encryption, split/multipart ZIPs, nested archive expansion, GNU TAR extensions, symlinks, hardlinks, devices and FIFOs are intentionally unsupported. Those entry kinds are either rejected or listed as blocked; they are never restored.
+Bounded GNU TAR long-name and long-link records and concatenated gzip members are supported. For 7z, the start-header offsets/sizes and both CRC-32 fields are validated; a plain FilesInfo header can expose names and empty-file/directory markers, while encoded headers are reported without decoding. For RAR4/RAR5, block framing and header CRCs are validated and plaintext file headers expose names, sizes, compression method identifiers, encryption and split-volume flags. Encrypted headers stop inspection.
+
+Split/multipart ZIPs, nested archive expansion, GNU sparse files, symlinks, hardlinks, devices and FIFOs remain unsupported for restoration. 7z/RAR codec chains, solid dictionaries, passwords, recovery data, decompression and extraction are explicitly unsupported; their inventories are evidence, not proof that packed file data is intact.
 
 The application treats every imported file as untrusted, applies explicit count/path/expanded-byte/compression-ratio limits, and never executes imported active content. See [docs/ARCHITECTURE.md](docs/ARCHITECTURE.md) and [docs/PRIVACY-SECURITY.md](docs/PRIVACY-SECURITY.md).
 
@@ -30,6 +38,10 @@ The application treats every imported file as untrusted, applies explicit count/
 | Compression ratio          |                           200:1 |
 | Path                       | 4,096 UTF-8 bytes / 64 segments |
 | Creation                   |           5,000 files / 512 MiB |
+| Concatenated gzip members  |                             256 |
+| Password                   |               1,024 UTF-8 bytes |
+| One 7z/RAR metadata header |                          16 MiB |
+| RAR header blocks          |                          40,000 |
 | Text / hex / image preview |        2 MiB / 128 KiB / 24 MiB |
 
 These are application-level ceilings, not a promise that every device can comfortably process files near the maximum.
@@ -37,7 +49,7 @@ These are application-level ceilings, not a promise that every device can comfor
 ## Using the workspaces
 
 1. **Inspect & extract** opens one archive, displays its safety inventory and previews eligible files. Select safe regular files and choose **Verify & download safe ZIP** to create a fresh archive.
-2. **Create** accepts local files and produces reproducible ZIP, TAR or tar.gz output. Browser file selection exposes relative paths only when the browser supplies them.
+2. **Create** accepts local files and produces reproducible ZIP, TAR or tar.gz output, or a locally encrypted AES-256/ZipCrypto ZIP. Browser file selection exposes relative paths only when the browser supplies them.
 3. **Compare** opens two archives and reports same, changed, type-changed and one-sided entries.
 
 ## Development
@@ -54,7 +66,7 @@ Runtime dependencies are exactly pinned. `npm audit` should be checked with ever
 
 ## Release
 
-`npm run release:artifact` creates a deterministic `release/archive-tools-0.1.0.zip` and checksum sidecar.
+`npm run release:artifact` creates a deterministic `release/archive-tools-0.2.0.zip` and checksum sidecar.
 
 ## Licence