Information processing apparatus, information processing method, and program storage medium
    1.
    发明授权
    Information processing apparatus, information processing method, and program storage medium 有权
    信息处理装置,信息处理方法和程序存储介质

    公开(公告)号:US07143445B1

    公开(公告)日:2006-11-28

    申请号:US09576621

    申请日:2000-05-23

    摘要: When a content is moved from a flash memory into a content database, a usage rule management program updates a variable seq-1, stored in a 0th defective block of a media defect list stored in the flash memory, to a new value seq-2. The usage rule management program calculates an MAC value (hash value) on the basis of the content stored in the data portion of the flash memory, an encrypted encryption key, and important information including the variable seq#. The usage rule management program then compares the calculated value with an MAC value stored in the header portion of the flash memory. If these two values are not equal, the usage rule management program disables reproduction of the content thereby preventing the content from being copied in an unauthorized manner.

    摘要翻译: 当内容从闪速存储器移动到内容数据库中时,使用规则管理程序将存储在闪存中的媒体缺陷列表的第0个缺陷块中存储的变量seq-1更新为新的值seq-2 。 使用规则管理程序基于存储在闪速存储器的数据部分中的内容,加密的加密密钥以及包括变量seq#的重要信息来计算MAC值(散列值)。 使用规则管理程序然后将所计算的值与存储在闪存的标题部分中的MAC值进行比较。 如果这两个值不相等,则使用规则管理程序禁止内容的再现,从而防止以未经授权的方式复制内容。