bkcrack mit Homebrew, Nix, zypper installieren

Projektlinks

• Homepage

Befehle und Aliase

• bkcrack

Projektgeschichte

The project was published on GitHub in 2016 and describes itself as an implementation of Eli Biham and Paul C. Kocher's known-plaintext attack on the PKZIP stream cipher. Its documentation explains the ZipCrypto keystream model and frames bkcrack as a way to recover internal keys, remove or change archive passwords, and attempt password recovery.

Adoptionsgeschichte

bkcrack grew from a specialist security tool into a packaged CLI available through Homebrew, Nix, openSUSE/zypper, and upstream GitHub release artifacts for Ubuntu, macOS, and Windows. That distribution pattern reflects a tool useful enough for repeatable incident-response and recovery workflows but still niche compared with general password crackers.

Wie es verwendet wird

Typical use starts with a ciphertext entry and 12 or more bytes of known plaintext, often supplied from another ZIP entry or file. Users run bkcrack to recover the ZipCrypto internal state, then decrypt data, create an unencrypted copy of the archive, change the password, or search for the original password from recovered keys.

Warum Paket-Nerds sich dafür interessieren

Package nerds care about bkcrack because it packages a classic academic break of legacy ZIP encryption into a reproducible CLI with cross-platform binaries. It is a reminder that 'ZIP password support' in archive tools historically meant weak ZipCrypto unless AES or another modern scheme was explicitly used.

Zeitleiste

• 1994: Biham and Kocher publish the known-plaintext attack on the PKZIP stream cipher.
• 2016: bkcrack repository is created on GitHub.
• 2020: v1.0.0 appears as the first GitHub release in the current release history.
• 2020s: bkcrack becomes available through Homebrew and other Unix package sets.

Related projects

• Related tools include zip password recovery and auditing utilities, but bkcrack is specifically centered on ZipCrypto known-plaintext recovery rather than generic brute-force cracking.
• The underlying cryptanalytic reference is Biham and Kocher's PKZIP stream-cipher paper, which bkcrack cites directly from its README.

Quellen

• https://doi.org/10.1007/3-540-60590-8_12
• https://github.com/kimci86/bkcrack#readme
• https://github.com/kimci86/bkcrack/releases
• source_facts.package-manager