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.\" ========================================================================
.\"
.IX Title "Apache::Session::Generate::MD5 3pm"
.TH Apache::Session::Generate::MD5 3pm "2020-09-20" "perl v5.30.3" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
Apache::Session::Generate::MD5 \- Use MD5 to create random object IDs
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& use Apache::Session::Generate::MD5;
\&
\& $id = Apache::Session::Generate::MD5::generate();
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module fulfills the \s-1ID\s0 generation interface of Apache::Session.  The
IDs are generated using a two-round \s-1MD5\s0 of a random number, the time since the
epoch, the process \s-1ID,\s0 and the address of an anonymous hash.  The resultant \s-1ID\s0
number is highly entropic on Linux and other platforms that have good
random number generators.  You are encouraged to investigate the quality of
your system's random number generator if you are using the generated \s-1ID\s0
numbers in a secure environment.
.PP
This module can also examine session IDs to ensure that they are, indeed,
session \s-1ID\s0 numbers and not evil attacks.  The reader is encouraged to 
consider the effect of bogus session \s-1ID\s0 numbers in a system which uses
these \s-1ID\s0 numbers to access disks and databases.
.PP
This modules takes one argument in the usual Apache::Session style.  The
argument is IDLength, and the value, between 0 and 32, tells this module
where to truncate the session \s-1ID.\s0  Without this argument, the session \s-1ID\s0 will
be 32 hexadecimal characters long, equivalent to a 128\-bit key.
.SH "AUTHOR"
.IX Header "AUTHOR"
This module was written by Jeffrey William Baker <jwbaker@acm.org>.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Apache::Session