0c4fa6ee0a
Add the relevant XKCD to the passwd(1) manual page. It already explains most of the rationale behind this patch. Add also reference to makepasswd(1), which is a good way to generate strong passwords. Personally, I commonly run `makepasswd --chars 64` to create my passwords, or 32 for passwords I need to type interactively often. The strength of a password is an exponential formula, where the base is the size of the character set, and the exponent is the length of the password. That already shows why long passwords of just lowercase letters are better than short Pa$sw0rdZ3. But an even more important point is that humans, when forced to use symbols in a password, are more likely to do trivial substitutions on simple passwords, which doesn't increase strength, and can instead give a false sense of strength, which is dangerous. Closes: <https://github.com/shadow-maint/shadow/issues/688> Link: <https://xkcd.com/936/> Cc: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Alejandro Colomar <alx@kernel.org> |
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| .github | ||
| contrib | ||
| doc | ||
| docs | ||
| etc | ||
| lib | ||
| libmisc | ||
| libsubid | ||
| man | ||
| po | ||
| share | ||
| src | ||
| tests | ||
| .editorconfig | ||
| .gitignore | ||
| .travis.yml | ||
| acinclude.m4 | ||
| AUTHORS.md | ||
| autogen.sh | ||
| ChangeLog | ||
| configure.ac | ||
| COPYING | ||
| Makefile.am | ||
| NEWS | ||
| README | ||
| README.md | ||
| SECURITY.md | ||
| shadow.spec.in | ||
| TODO | ||
shadow-utils
Introduction
The shadow-utils package includes the necessary programs for converting UNIX password files to the shadow password format, plus programs for managing user and group accounts. The pwconv command converts passwords to the shadow password format. The pwunconv command unconverts shadow passwords and generates a passwd file (a standard UNIX password file). The pwck command checks the integrity of password and shadow files. The lastlog command prints out the last login times for all users. The useradd, userdel, and usermod commands are used for managing user accounts. The groupadd, groupdel, and groupmod commands are used for managing group accounts.
Sites
Contacts
There are several ways to contact us:
- the general discussion mailing list
- the #shadow IRC channel on libera.chat:
- irc://irc.libera.chat/shadow
Mailing archives
- the general discussion mailing list archive
- the commit mailing list archive, only used for historical purposes
Contributions
Contributions are welcome. Follow the guidelines before posting any patches.
Authors and maintainers
Authors and maintainers are listed in AUTHORS.md.