Documentation can be found at
http://tcllib.sourceforge.net/doc/md5crypt.htmlThis package provides an implementation of the MD5-crypt password encryption algorithm as pioneered by FreeBSD and currently in use as a replacement for the unix crypt(3) function in many modern systems. An implementation of the closely related Apache MD5-crypt is also available.
The output of these commands are compatible with the BSD and OpenSSL implementation of md5crypt and the Apache 2 htpasswd program.
Example
% md5crypt::md5crypt password 01234567
$1$01234567$b5lh2mHyD2PdJjFfALlEz1
% md5crypt::aprcrypt password 01234567
$apr1$01234567$IXBaQywhAhc0d75ZbaSDp/
See also
md5,
crypt