Master Sites: Expand this list (56 items) Collapse this list. This port is required by: for RunĬonfiguration Options: No options to configure Options name: sysutils_pwgen USES: cpe FreshPorts was unable to extract/find any pkg message Packages (timestamps in pop-ups are UTC): PKGNAME: pwgen Flavors: there is no flavor information for this port. NOTE: If this package has multiple flavors (see below), then use one of them instead of the name specified above.
#PWGEN MAN INSTALL#
To install the port: cd /usr/ports/sysutils/pwgen/ & make install clean To add the package, run one of these commands: /usr/local/share/licenses/pwgen-2.08,2/LICENSE./usr/local/share/licenses/pwgen-2.08,2/catalog.mk.
¦ ¦ ¦ ¦ pkg-plist: as obtained via: make generate-plist Expand this list (5 items) Collapse this list. Maintain, and because the licensing status of the program was unclear. It was rewritten from scratch by Theodore Ts'oīecause the original program was somewhat of a hack, and thus hard to Allbery, and then later extensively modified by Olaf Titz, It is modelled after a program originally writtenīy Brandon S. This version of pwgen was written by Theodore Ts'o
#PWGEN MAN PASSWORD#
Maintainer: Port Added: 13:37:40 Last Update: 21:58:51 Commit Hash: fb16dfe People watching this port, also watch:: png, unzip, tiff, libiconv, gmake License: GPLv2 Description: Pwgen is a small, powerful, GPL'ed password generator. Pwgen Small, powerful, GPL'ed password generatorĢ.08,2 sysutils =27 2.08,2 Version of this port present on the latest quarterly branch. Want a good read? Try FreeBSD Mastery: Jails (IT Mastery Book 15) All times are UTC
But for most practical purposes, if you just be sure to generate things that are a few characters longer than you otherwise might, then your gain in strength from generating a longer password will surely overwhelm the loss of strength from their non-uniform behavior.FreshPorts - sysutils/pwgen: Small, powerful, GPL'ed password generatorĪs an Amazon Associate I earn from qualifying purchases. It is frustrating that popular password generators are hard to actually analyze in terms of strength. So between the relatively small modulo bias and the much larger deliberate bias toward more likely sounding syllables, it would require a level of analysis beyond what I am willing to do to actually calculate the min-entropy.
#PWGEN MAN GENERATOR#
It is a relatively small bias that comes up through a common design error when trying to pick a number between 1 and N even when the underlying random number generator is good. I have argued that we should be using min-entropy in such cases.Īdditionally, some versions of pwgen are subject to the modulo bias. There is no clear answer to what notion of entropy is most appropriate when password creation schemes when the schemes do not produce uniform output. A link to the video of the talk and the slides are here: Note I discuss this in my PasswordConLV15 talk. This is true of most "pronounceable" password generators. This is because it tries to mimic some of the frequencies we have in English. Some passwords are more likely than others. Pwgen does not produce passwords uniformly.
The actual answer to your question is too hard for me to reasonably calculate, but I can say a few useful things about this. But it is far more than enough against automatized login scripts particularly if something (like a fail2ban) causes a hard, low limit to the possible tries. It means, that pwgen is probably quite sophistically tuned also for the high entropy, and not only to produce easily pronouncable passwords.ģ6 bit is not enough defense against gpu-accelerated, clustered brute force attacks. Typically, text data can be compressed to around 10% of its original size, while xz could reach only a 60% ratio. Note: although the output was a text file, xz could compress it only with a surprisingly bad ratio. Replayed measurements didn't show a significant dispersion.īased on this, the entropy of a single, 8 byte-long pwgen password is 8*8*593412/1048576 = 36.2 bits of entropy.
Generates an 1MB long password, compresses it with the best known flags of the best known compressor, and measures the size of the output. The command pwgen 1048576|xz -9ve -|wc -c But I think we can use a strong compressor to approximate the entropy. An exact answer would require a deeper analyzis of the pwgen source code, or a more exact measurement.
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