Content delivery system and content delivery method
    7.
    发明授权
    Content delivery system and content delivery method 有权
    内容交付系统和内容交付方式

    公开(公告)号:US08538887B2

    公开(公告)日:2013-09-17

    申请号:US09999456

    申请日:2001-10-31

    IPC分类号: G06F21/00

    摘要: In a content delivery system, delivery of content and charging the fee of the content are performed and managed in a highly secure and effective fashion. If a content-purchasing request is transmitted from a user device to a shop server, a charging process is performed. A user device authentication server, which manages content delivery, converts an encrypted content key KpDAS(Kc) encrypted using a public key of the user device authentication server (DAS) into an encrypted content key KpDEV(Kc) encrypted using a public key KpDEV of the user device. If the charging process is successfully completed, the shop server transmits, to the user device, the encrypted content key KpDEV(Kc).

    摘要翻译: 在内容传送系统中,以高度安全和有效的方式执行和管理内容的传送和内容的收费。 如果从用户设备向店铺服务器发送内容购买请求,则执行计费处理。 管理内容传送的用户设备认证服务器将使用用户设备认证服务器(DAS)的公共密钥加密的加密内容密钥KpDAS(Kc)转换成使用公共密钥KpDEV加密的加密内容密钥KpDEV(Kc) 用户设备。 如果计费过程成功完成,则商店服务器向用户设备发送加密内容密钥KpDEV(Kc)。

    Data storage with CBC-mode encryption processing
    10.
    发明授权
    Data storage with CBC-mode encryption processing 失效
    数据存储采用CBC模式加密处理

    公开(公告)号:US07243228B2

    公开(公告)日:2007-07-10

    申请号:US09982624

    申请日:2001-10-18

    IPC分类号: H04L9/00

    摘要: Between a data recording/playback device and a data storage device, CBC-mode encryption processing is executed which encrypts a plurality of encryption keys of content which correspond to sectors. The encrypted data is stored in a header corresponding to the content. The CBC-mode encryption processing is executed by using a storage key unique to media in which the content is stored. For using the content, only by decrypting the key data in media in which mutual authentication is established, the content can be used, so that highly-secure key storage is implemented.

    摘要翻译: 在数据记录/再现装置和数据存储装置之间,执行对与扇区对应的内容的多个加密密钥进行加密的CBC模式加密处理。 加密数据存储在与内容相对应的标题中。 CBC模式加密处理通过使用其中存储内容的媒体独有的存储密钥来执行。 为了使用内容,仅通过解密建立相互认证的媒体中的密钥数据,可以使用内容,从而实现高度安全的密钥存储。