Port details on branch 2022Q3 |
- pkcrack Utility for breaking pkzip encryption
- 1.2.2 security =3 1.2.2Version of this port present on the latest quarterly branch.
- Maintainer: ehaupt@FreeBSD.org
- Port Added: 2005-07-28 10:32:49
- Last Update: 2022-09-07 21:58:51
- Commit Hash: fb16dfe
- People watching this port, also watch:: openntpd, foremost, freesbie, portmaster
- License: not specified in port
- WWW:
- https://www.unix-ag.uni-kl.de/~conrad/krypto/pkcrack.html
- Description:
- This package implements an algorithm for breaking the PkZip cipher that was
devised by Eli Biham and Paul Kocher.
This program applies a known plaintext attack to an encrypted file.
A known-plaintext-attack recovers a password using the encrypted file and
(part of) the unencrypted file.
Please note that cryptographers use the word 'plaintext' for any kind of
unencrypted data - not necessarily readable ASCII text.
Before you ask why somebody may want to know the password when he already knows
the plaintext think of the following situations:
- Usually there's a large number of files in a ZIP-archive. Usually all these
files are encrypted using the same password. So if you know one of the files,
you can recover the password and decrypt the other files.
- You need to know only a part of the plaintext (at least 13 bytes). Many files
have commonly known headers, like DOS .EXE-files. Knowing a reasonably long
header you can recover the password and decrypt the entire file.
- ¦ ¦ ¦ ¦
- Manual pages:
- FreshPorts has no man page information for this port.
- pkg-plist: as obtained via:
make generate-plist - Dependency lines:
-
- pkcrack>0:security/pkcrack
- To install the port:
- cd /usr/ports/security/pkcrack/ && make install clean
- To add the package, run one of these commands:
- pkg install security/pkcrack
- pkg install pkcrack
NOTE: If this package has multiple flavors (see below), then use one of them instead of the name specified above.- PKGNAME: pkcrack
- Flavors: there is no flavor information for this port.
- distinfo:
- SHA256 (pkcrack-1.2.2.tar.gz) = 4d2dc193ffa4342ac2ed3a6311fdf770ae6a0771226b3ef453dca8d03e43895a
SIZE (pkcrack-1.2.2.tar.gz) = 174208
Packages (timestamps in pop-ups are UTC):
- Dependencies
- NOTE: FreshPorts displays only information on required and default dependencies. Optional dependencies are not covered.
- Build dependencies:
-
- gmake>=4.3 : devel/gmake
- There are no ports dependent upon this port
Configuration Options:
- ===> The following configuration options are available for pkcrack-1.2.2:
DOCS=on: Build and/or install documentation
===> Use 'make config' to modify these settings
- Options name:
- security_pkcrack
- USES:
- gmake
- FreshPorts was unable to extract/find any pkg message
- Master Sites:
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