create_new_id

# File lib/cgi/session.rb, line 176
    def create_new_id
      require 'securerandom'
      begin
        session_id = SecureRandom.hex(16)
      rescue NotImplementedError
        require 'digest/md5'
        md5 = Digest::MD5::new
        now = Time::now
        md5.update(now.to_s)
        md5.update(String(now.usec))
        md5.update(String(rand(0)))
        md5.update(String($$))
        md5.update('foobar')
        session_id = md5.hexdigest
      end
      @new_session = true
      session_id
    end