# File lib/merb-core/dispatch/session.rb, line 82
    def rand_uuid
      if defined?(SecureRandom)
        SecureRandom.hex(16)
      else
        values = [
          rand(0x0010000),
          rand(0x0010000),
          rand(0x0010000),
          rand(0x0010000),
          rand(0x0010000),
          rand(0x1000000),
          rand(0x1000000),
        ]
        "%04x%04x%04x%04x%04x%06x%06x" % values
      end
    end