Recording medium, method of reproducing data from a recording medium and apparatus for reproducing data from a recording medium

摘要

A recording medium including recorded data, comprising: a control data area including pits formed along tracks, with data recorded therein, wherein pits formed in some portions of the tracks are shifted from a track center to left and/or right to thereby form intermittent or alternate wobbled pits and wherein pits formed in other portions of the tracks of the control data area are substantially along the track center to thereby form straight pits, wherein the wobbled pits contain a key value for encrypting main data; and a data area adapted for storing main data encrypted by using the key value in straight pits.