cpython/Doc/lib/libcrypt.tex

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\section{\module{crypt} ---
The \cfunction{crypt()} function used to check \UNIX{} passwords.}
\declaremodule{builtin}{crypt}
\modulesynopsis{The \cfunction{crypt()} function used to check \UNIX{} passwords.}
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This module implements an interface to the \manpage{crypt}{3} routine,
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which is a one-way hash function based upon a modified DES algorithm;
see the \UNIX{} man page for further details. Possible uses include
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allowing Python scripts to accept typed passwords from the user, or
attempting to crack \UNIX{} passwords with a dictionary.
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\index{crypt(3)}
\begin{funcdesc}{crypt}{word, salt}
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\var{word} will usually be a user's password. \var{salt} is a
2-character string which will be used to select one of 4096 variations
of DES\indexii{cipher}{DES}. The characters in \var{salt} must be
either \code{.}, \code{/}, or an alphanumeric character. Returns the
hashed password as a string, which will be composed of characters from
the same alphabet as the salt.
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\end{funcdesc}
The module and documentation were written by Steve Majewski.
\index{Majewski, Steve}