tbz 0.1.3

TBZ (TIBET-zip) — Block-level authenticated compression for the Zero-Trust era

tbz — TIBET-zip for Python

Block-level authenticated compression for the Zero-Trust era.

Every block carries its own TIBET provenance envelope and Ed25519 signature. Tampered blocks are rejected before decompression touches memory. Built as a response to CVE-2026-0866 (Zombie ZIP) — where a single header flip fools 50 out of 51 antivirus engines.

Install

pip install tbz

What you get

Feature	Pure Python	With Rust CLI
Read block headers	yes	yes
Inspect archive structure	yes	yes
SHA-256 hash verification	yes	yes
Ed25519 signature verification	—	yes
Pack files into .tza	—	yes
Unpack via TIBET Airlock	—	yes
Transparency Mirror client	yes	yes

Pure Python works standalone — no binary needed. Add the Rust CLI for full cryptographic verification and pack/unpack.

Quick Start

Inspect and verify

from tbz import TBZArchive

archive = TBZArchive("release.tza")

# Inspect: read block headers (pure Python)
info = archive.inspect()
print(f"Blocks: {info['block_count']}")
print(f"Hash:   {info['content_hash']}")
for block in info["blocks"]:
    sig = "signed" if block["signed"] else "unsigned"
    print(f"  [{block['index']}] {block['type']} — {block['compressed_size']} bytes, {sig}")

# Verify: SHA-256 + Ed25519 (uses Rust CLI if available)
result = archive.verify()
print(result)  # TBZ VERIFIED: 3 blocks (hash + Ed25519), 0 errors

Transparency Mirror — supply chain lookup

from tbz import Mirror

mirror = Mirror()  # connects to bootstrap node

# Look up any TBZ archive by its hash (public, no auth)
entry = mirror.lookup("sha256:abc123...")
if entry:
    print(f"Source: {entry['source_repo']}")
    print(f"Attestations: {len(entry['attestations'])}")

# Search by publisher
results = mirror.search(jis_id="jis:ed25519:77214ce9c262843e")

# Search by verdict
safe_packages = mirror.search(verdict="safe")

# Mirror node stats
stats = mirror.stats()
print(f"Node: {stats['node']}, entries: {stats['total_entries']}")

Pack and unpack (requires Rust CLI)

# Pack
archive = TBZArchive.pack("./src", output="release.tza")

# Unpack through TIBET Airlock (quarantine buffer, 0x00 wipe on failure)
archive.unpack("./extracted")

Rust CLI

For full features, install the Rust CLI:

cargo install tbz-cli

Then you get short aliases and smart mode:

tbz p ./src -o release.tza    # pack
tbz x release.tza             # extract
tbz v release.tza             # verify
tbz i release.tza             # inspect

tbz release.tza               # smart: verify + unpack
tbz ./src                     # smart: pack

Transparency Mirror

The Mirror is a distributed trust database for verifying TBZ package provenance. The bootstrap node runs at brein.jaspervandemeent.nl.

from tbz import Mirror

# Default: bootstrap node
mirror = Mirror()

# Custom node
mirror = Mirror(node_url="https://your-mirror.example.com")

# Public endpoints (no auth required)
mirror.lookup("sha256:...")       # look up by content hash
mirror.search(verdict="safe")     # search attestations
mirror.search(signing_key="77")   # search by key prefix
mirror.stats()                    # node statistics

Why TBZ?

ZIP, tar.gz, and 7z have no cryptographic binding between headers and data. CVE-2026-0866 proves this: flip one byte in a ZIP header, and 50 out of 51 antivirus engines see noise instead of malware.

TBZ fixes this by design:

• Ed25519 signature covers header + envelope + payload together
• SHA-256 hash in TIBET envelope is the source of truth
• Quarantine buffer wipes to 0x00 on verification failure

No header trust. Verify first, decompress second.

Links

• GitHub
• crates.io
• Architecture
• Mirror API
• Mirror Analytics

License

MIT / Apache-2.0