CONTENT DISTRIBUTION SYSTEM, CONTENT RECORDING DEVICE AND RECORDING METHOD, CONTENT REPRODUCTION DEVICE AND REPRODUCTION METHOD, AND COMPUTER PROGRAM

摘要

A content supply device supplies a sub content associated with a main content. A DVD-ROM contains a bind key unique to the DVD-ROM and the main content as the digital production. A main player reads out the bind key from the DVD-ROM and acquires the sub content associated with the main content recorded in the DVD-ROM. According to the bind key read out, the main player encrypts the sub content acquired, generates an encrypted sub content, and writes the generated encrypted sub content in an SD memory card. A sub player reads out the bind key from the DVD-ROM and reads out the encrypted sub content from the SD memory card. According to the bind key read out, the sub player decrypts the encrypted sub content, generates a reproduction sub content, and reproduces the reproduction sub content generated.