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    • 8. 发明申请
    • KEY INFORMATION MANAGEMENT SYSTEM, RECORD REPRODUCTION APPARATUS, AND KEY INFORMATION MANAGEMENT APPARATUS
    • 主要信息管理系统,记录再现装置和关键信息管理装置
    • US20120219152A1
    • 2012-08-30
    • US13358005
    • 2012-01-25
    • Suguru YorifujiKazumasa MiyazakiTakafumi MasudaNorihiko SatoToshihiko Suzuki
    • Suguru YorifujiKazumasa MiyazakiTakafumi MasudaNorihiko SatoToshihiko Suzuki
    • G06F21/00
    • H04L9/083H04L9/0869H04L9/0894H04L2209/60
    • A key information management system includes one or more record reproduction apparatuses and a key information management server. Each record reproduction apparatus has a substrate which can be replaced, and a nonvolatile storage unit which is mounted on the substrate and stores substrate identification information and key information of an encryption key. The key information management server includes a storage unit for storing the substrate identification information and the key information of the substrate in association with product identification information of the record reproduction apparatus, and the key information management server permits access to the storage unit through authentication. The record reproduction apparatus accesses the key information management server through the authentication after the substrate is replaced, and then rewrites substrate identification information and key information of the substrate after the replacement using the substrate identification information and key information of the substrate before replacement.
    • 密钥信息管理系统包括一个或多个记录再现设备和密钥信息管理服务器。 每个记录再现装置具有可替换的基板和安装在基板上并存储基板识别信息和加密密钥的密钥信息的非易失性存储单元。 密钥信息管理服务器包括存储单元,用于与记录再现设备的产品识别信息相关联地存储基板识别信息和基板的密钥信息,并且密钥信息管理服务器允许通过认证访问存储单元。 记录重放装置在更换基板之后通过认证访问密钥信息管理服务器,然后在更换之后使用基板识别信息和更换前的基板的密钥信息重写基板识别信息和更换后的基板的密钥信息。