公开(公告)号：US20150127948A1

公开(公告)日：2015-05-07

申请号：US14595447

申请日：2015-01-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masao NONAKA ,  Yuichi FUTA ,  Toshihisa NAKANO ,  Kaoru YOKOTA ,  Motoji OHMORI ,  Masaya MIYAZAKI ,  Masaya YAMAMOTO ,  Kaoru MURASE ,  Senichi ONODA

IPC: H04L9/32 ,  G06F21/62 ,  G06F21/64 ,  G06F21/10

CPC classification number: H04L9/3247 ,  G06F21/10 ,  G06F21/6209 ,  G06F21/64 ,  G06F2221/0773 ,  H04L9/3236 ,  H04L2209/60 ,  Y10S707/99942

Abstract: A data processing device for playing back a digital work reduces the processing load involved in verification by using only a predetermined number of encrypted units selected randomly from multiple encrypted units constituting encrypted contents recorded on a DVD. In addition, the data processing device improves the accuracy of detecting unauthorized contents by randomly selecting a predetermined number of encrypted units every time the verification is performed.

Abstract translation: 用于再现数字作品的数据处理装置通过仅使用构成加密内容的多个加密单元随机选择的预定数量的加密单元来减少验证中所涉及的处理负担。 此外，数据处理装置通过在每次执行验证时随机选择预定数量的加密单元来提高检测未授权内容的准确性。