Data::Session::ID::SHA1 - A persistent session manager


See Data::Session for details.


Data::Session::ID::SHA1 allows Data::Session to generate session ids using Digest::SHA.

To use this module do this:

o Specify an id generator of type SHA1, as Data::Session -> new(type => '... id:SHA1 ...')

Case-sensitive Options

See "Case-sensitive Options" in Data::Session for important information.

Method: new()

Creates a new object of type Data::Session::ID::SHA1.

new() takes a hash of key/value pairs, some of which might mandatory. Further, some combinations might be mandatory.

The keys are listed here in alphabetical order.

They are lower-case because they are (also) method names, meaning they can be called to set or get the value at any time.

o verbose => $integer

Print to STDERR more or less information.

Typical values are 0, 1 and 2.

This key is normally passed in as Data::Session -> new(verbose => $integer).

This key is optional.

Method: generate()

Generates the next session id, or dies if it can't.

The algorithm is Digest::SHA -> new(1) -> add($$, time, rand(time) ) -> hexdigest.

Returns the new id.

Method: id_length()

Returns 40 because that's the number of hex digits in an SHA1 digest.


Log a bug on RT:


Data::Session was written by Ron Savage <> in 2010.

Home page:


Australian copyright (c) 2010, Ron Savage.

        All Programs of mine are 'OSI Certified Open Source Software';
        you can redistribute them and/or modify them under the terms of
        The Artistic License, a copy of which is available at: