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4254results about How to "Prevent tampering" patented technology

Data authentication system

A data processing apparatus a data processing method efficiently ascertain that data are valid, prevent encryption processing key data from leaking, eliminate illegal use of contents data, restrict contents utilization, apply a different plurality of data formats to contents and efficiently execute reproduction processing of compressed data. The verification process of partial data is executed by collating the integrity partial data as check values for a combination of partial data of a content, and the verification process of the entirety of the combination of partial data is executed by collating partial-integrity-check-value-verifying integrity check values that verify the combination of the partial integrity check values. Master keys to generate individual keys necessary for a process of such as data encryption are stored in the storage section and keys are generated as required. An illegal device list is stored in the header information of a content and referred to when data is used. Keys specific to a data processing apparatus and common keys are stored and the keys are selectively used according to the content use restriction. Plural content blocks are coupled, and at least a part of the content blocks is applied to an encryption process by an encryption key Kcon, then encryption key data that is the encryption key Kcon encrypted by an encryption key Kdis is stored in the header section. A content data is made of compression data and an expansion processing program or a combination of types of compression programs and the reproducing apparatus can determine an expansion program applicable to a compressed content.
Owner:SONY CORP

Firmware upgrading and encapsulating method and device based on digital signing

The invention discloses a firmware upgrading method based on digital signatures, and a device thereof, wherein the upgrading method comprises the following steps: encapsulation is performed according to a predefined encapsulation structure so as to generate an upgrading file based on a digital signature; a product needing firmware upgrading obtains the upgrading file; a digital signature file is extracted from the upgrading file and decrypted, so as to obtain an XML file; the XML file is analyzed so as to screen out upgrading module files needing to be upgraded; the legitimacy and integrity of every upgrading module file needing to be upgraded are verified respectively, so as to generate an upgrading script for upgrading all the upgrading module files which pass verification; and the upgrading script is executed so as to upgrade the firmware. The invention discloses a firmware encapsulating method based on digital signatures, and a device thereof. The invention verifies the integrity and legitimacy of every upgrading module file in the upgrading file through the digital signature file, and generates the upgrading script to finish upgrading firmware, thereby improving the security and convenience of firmware upgrading.
Owner:SHENZHEN SKYWORTH DIGITAL TECH CO LTD

Optical disk and method of integrating a high gain RFID antenna

An optical disk comprises a disk substrate having a hub and an annular optical metallicized data region extending radially outward from the hub. The optical disk further comprises a radio frequency identification (RFID) transponder affixed to the disk substrate, e.g., within the non-data containing hub region. The optical disk further comprises at least one linear antenna element coupled to the transponder, e.g., via pole lead(s), and extending within the data region. The antenna element(s) can be applied to the disk substrate as a patterned antenna layer over a metallicized data region, and can be electrically isolated from the data region. A method and system of identifying an optical disk is provided. A radio frequency (RF) signal can be transmitted to the optical disk at a range of at least five feet, and preferably at a range of at least ten feet. An RF signal with an identification code (e.g., a unique number) can be received from the optical disk in response to the transmitted RF signal. The activating RF signal can be transmitted by, and the identification RF signal can be received by, e.g., a handheld RF reader or an RF reader that is affixed to a building. The identification code can then be processed for many purposes, such as identifying the optical disk as a non-counterfeited optical disk, calculating a royalty, or tracking the location of the optical disk.
Owner:MICROSOFT TECH LICENSING LLC
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