January 2003
Intermediate to advanced
832 pages
32h 40m
English
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Name
makekey
Synopsis
makekey
Produces crypt password hashes. This could be used to automatically populate a password database from known passwords, or to make hashes of prospective passwords that could be subjected to cracking attempts before being put into use.
makekey takes no command-line arguments. It
accepts a character string on standard input, consisting of an
eight-character password combined with a two-character
salt, which is used to permute the DES password
encryption algorithm. (Use man crypt for more
information.) It prints a thirteen-character string to standard
output, with the first two characters being the salt, and the other
eleven characters being the password hash. The entire string is
suitable for use as the password field in a standard Unix
/etc/passwd-format file, or as the value of the
passwd property in an Open Directory entry for a
user employing Basic authentication.
Example
% echo password12 | /usr/libexec/makekey
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