'Plugin::Authentication' =>
    {
        default_realm => 'members',
            members => {
                credential => {
                    class => 'Password',
                    password_field => 'password',
                    password_type => 'self_check'
                },
                store => {
                    class => 'DBIx::Class',
                    user_model => 'DB::User',
                }
            }
    },

##</code><code>##

__PACKAGE__->add_columns(
    'password' => {
        data_type           => 'varchar',
        encode_column       => 1,
        encode_class        => 'Crypt::PBKDF2',
        encode_args         => {
            hash_class => 'HMACSHA2',
            hash_args => {
                    sha_size => 512,
                },
            iterations => 10000,
            salt_len   => 10,
        },
        encode_check_method => 'check_password',
    }
);

##</code><code>##

#!/usr/bin/perl
use strict;
use warnings;
use MyApp::Schema;

my $schema = MyApp::Schema->connect('dbi:mysql:database', 'root', '');
my @users = $schema->resultset('User')->all;

# Just traversing the User
foreach my $user (@users) {
    if ($user->email eq 'xyz') {
        $user->password('password');
        $user->update;
    }
}