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    • 7. 发明申请
    • REGION MANAGEMENT APPARATUS, REGION MANAGEMENT METHOD, AND PROGRAM
    • 区域管理设备,区域管理方法和程序
    • US20120089806A1
    • 2012-04-12
    • US13323407
    • 2011-12-12
    • Makoto YoshiokaMitsuhiro KokubunToshio Shinjo
    • Makoto YoshiokaMitsuhiro KokubunToshio Shinjo
    • G06F12/02
    • G06F3/0608G06F3/0643G06F3/0644G06F3/0683G06F12/0292
    • To provide a technology that, regardless of the capacity of a storage device, enables its areas to be flexibly partitioned and managed, and, when a file is allocated to a region also, can also use its areas effectively by means of an efficient method. When a region size of a storage device is expressed as the sum of mutually differing power-of-2 values, and areas whose size is one of the power-of-2 sizes configuring that sum are taken to be master partitions, to partition the areas into partitions each of whose size is the size made by successively dividing each master partition in half and to generate an allocation table holding allocation information expressing the allocation status of each of the files that have partitions with each of the sizes included in the master partitions. To manage a region based on the allocation information stored in the allocation table.
    • 为了提供一种技术,无论存储设备的容量如何,使其区域能够被灵活地分割和管理,并且当文件也被分配到区域时也可以通过有效的方法有效地使用其区域。 当存储设备的区域大小被表示为相互不同的功率2值的和时,并且其尺寸是构成该和的2个大小之一的区域被认为是主分区,以将 区域分割成分区,每个分区的大小是通过将每个主分区连续划分成一半而形成的大小,并且生成一个分配表,该分配表保持分配信息,该分配表保持表示具有包含在主分区中的每个大小的分区的每个文件的分配状态 。 基于存储在分配表中的分配信息来管理区域。
    • 9. 发明授权
    • Encryption processing system
    • 加密处理系统
    • US06460137B1
    • 2002-10-01
    • US08617596
    • 1996-03-19
    • Ryota AkiyamaAkio MunakataYuzuru KogaMasayuki IshizakiMakoto Yoshioka
    • Ryota AkiyamaAkio MunakataYuzuru KogaMasayuki IshizakiMakoto Yoshioka
    • H04L912
    • H04L9/0869H04L9/0625H04L9/12
    • A random-number generator generates first and second title keys on the basis of random numbers. A first DES encryption circuit for the title encrypts input data with the first title key. Initial values of this item of input data are a data identifier (ID) and program clock reference (PCR) that are extracted from a packet header. After completing the encryption of the initial values, a result of an encryption by a second DES encryption circuit for title serves as the input data for the first DES encryption circuit for title. The second DES encryption circuit for title encrypts a value of result of the encryption by the first DES encryption circuit for title with the second title key. An exclusive OR circuit outputs an exclusive OR of the data stored in the packet and a value of result of the encryption by the second DES encryption circuit for title. This exclusive OR turns out encrypted data.
    • 随机数发生器基于随机数产生第一和第二标题密钥。 用于标题的第一DES加密电路用第一标题密钥加密输入数据。 该项输入数据的初始值是从分组报头提取的数据标识符(ID)和程序时钟参考(PCR)。 在完成初始值的加密之后,用于标题的第二DES加密电路的加密结果用作用于标题的第一DES加密电路的输入数据。 用于标题的第二DES加密电路通过第一DES加密电路加密具有第二标题密钥的标题的加密结果的值。 异或电路输出存储在数据包中的数据的异或和用于标题的第二DES加密电路的加密结果的值。 这种排他OR产生加密数据。
    • 10. 发明授权
    • Security system for protecting information stored in portable storage
media
    • 用于保护存储在便携式存储介质中的信息的安全系统
    • US5857021A
    • 1999-01-05
    • US728856
    • 1996-10-10
    • Satoshi KataokaMakoto YoshiokaKenichi UtsumiKeiichi Murakami
    • Satoshi KataokaMakoto YoshiokaKenichi UtsumiKeiichi Murakami
    • G06F1/00G06F21/10G06F21/80H04L9/00
    • G06F21/10G06F21/80G06F2211/007G06F2221/2129
    • A security system for protecting information stored in portable storage media by checking identifiers assigned to each medium, system, and terminal. Medium IDs are identifiers written by manufacturers of the storage media. System IDs, or corporate IDs, are assigned to enterprise-wide computer systems each consisting of a host computer and terminals. Terminal IDs are affixed to the respective terminals. Data is stored in the media in encrypted form. The security system checks the validity of the medium ID, system ID, and terminal ID, manages before allowing the user to perform any data access, thus protecting the contents from unauthorized access. The security system also writes permission data into each storage medium to manage the decryption of encrypted data stored therein. The permission data contains an encrypted key which is necessary for decrypting the data, and the key can be decoded only with a valid medium ID and unit ID, thus protecting the data in the medium against any attempt to decrypt it with unqualified equipment.
    • 一种用于通过检查分配给每个介质,系统和终端的标识来保护存储在便携式存储介质中的信息的安全系统。 介质ID是由存储介质的制造商编写的标识符。 系统ID或公司ID分配给企业级计算机系统,每个计算机系统由主机和终端组成。 终端ID贴在各终端上。 数据以加密形式存储在媒体中。 安全系统检查介质ID,系统ID和终端ID的有效性,在允许用户执行任何数据访问之前进行管理,从而保护内容免遭未经授权的访问。 安全系统还将许可数据写入每个存储介质以管理其中存储的加密数据的解密。 许可数据包含解密数据所必需的加密密钥,并且密钥只能用有效的介质ID和单元ID进行解码,从而保护介质中的数据免受用不合格的设备的任何解密的尝试。