METHOD FOR VERIFYING SYSTEM DATA, STORAGE MEDIUM, RECORDING DEVICE AND REPRODUCTION DEVICE,申请号JP20120222496-传众专利搜索

METHOD FOR VERIFYING SYSTEM DATA, STORAGE MEDIUM, RECORDING DEVICE AND REPRODUCTION DEVICE

申请公布号：JP2013048009(A)

申请号：JP20120222496

申请日期：2012.10.04

申请公布日期：2013.03.07

申请人：

KONINKL PHILIPS ELECTRONICS NV

发明人：LINNARTZ JOHAN P M G;KALKER ANTONIUS A C M;JOHAN C TALSTRA

分类号：G11B20/10;H04N5/91;G06F21/64;G06F21/80;G11B20/00;G11B20/12;H04L9/32;H04N5/85

主分类号：G11B20/10

摘要：<P>PROBLEM TO BE SOLVED: To provide the storage of large quantities of data which shall not be modifiable or erasable in copy protection. <P>SOLUTION: In a method, system data is stored in a recordable data area, identification data is stored in a read-only fixed data area, a cryptographic summary of the system data and the identification data is created and stored in the recordable data area, and the cryptographic summary is supplied to verify the system data before reading and/or recording user data. A message authentication code algorithm is used to generate the cryptographic summary and verify the system data, and the system data is represented by a key encrypted by one or more different keys inherent to a manufacturer or inherent to a device, or a decryption key. <P>COPYRIGHT: (C)2013,JPO&INPIT