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    • 86. 发明授权
    • CRYPTOGRAPHIC PROCESSING APPARATUS, CRYPTOGRAPHIC PROCESSING METHOD, AND STORAGE MEDIUM STORING CRYPTOGRAPHIC PROCESSING PROGRAM FOR REALIZING HIGH-SPEED CRYPTOGRAPHIC PROCESSING WITHOUT IMPAIRING SECURITY
    • 图形处理设备,结构处理方法和存储中央存储加工程序,用于实现高速图形处理而不会影响安全性
    • US06570989B1
    • 2003-05-27
    • US09296072
    • 1999-04-21
    • Motoji OhmoriKaoru Yokota
    • Motoji OhmoriKaoru Yokota
    • H04L900
    • H04L9/002H04L9/0625H04L2209/12H04L2209/24
    • To provide a cryptographic processing apparatus that cryptographically processes input data using substitution table data to generate output data. A storing unit stores (2{circumflex over ( )}N) sets of substitution data that each have a predetermined number of bits, where N is an integer no less than 2. A dividing unit divides the input data which is (N×M) bits long into M sets of N-bit subdata, where M is an integer no less than 2. A substituting unit receives an input that is any of: the M sets of N-bit subdata; and at least one set of N-bit input merged data generated by performing a merge process on the M sets of N-bit subdata, specifies one of the (2{circumflex over ( )}N) sets of substitution data in the storing unit for each N bits of the input, and outputs the set of substitution data specified for each N bits of the input. A fixed conversion performing unit performs a plurality of different fixed conversions on at least one set of substitution data outputted from the substituting unit, to generate M sets of converted data that each have the predetermined number of bits. An output data generating unit generates the output data that is (N×M) bits long, based on the M sets of converted data generated by the fixed conversion performing means.
    • 提供一种加密处理装置,其使用替换表数据密码地处理输入数据以产生输出数据。 存储单元存储每个具有预定位数的(2N)个替换数据组,其中N是不小于2的整数。分割单元将(N×M)比特长的输入数据划分为M组N 位数子数据,其中M是不小于2的整数。一个替换单元接收一个输入,它是M组的N位子数据中的任意一个; 并且通过对M组N位子数据执行合并处理而生成的至少一组N位输入合并数据指定存储单元中的(N)个替换数据集合中的每一个的N位 输入并输出为输入的每个N位指定的替换数据集。 固定转换执行单元对从替换单元输出的至少一组替换数据执行多个不同的固定转换,以产生每组具有预定位数的M组转换数据。 输出数据生成单元基于由固定转换执行装置生成的M组转换数据,生成(N×M)位长的输出数据。
    • 88. 发明授权
    • Terminal device, content recording system, title key recording method, and computer program
    • 终端设备,内容记录系统,标题密钥记录方法和计算机程序
    • US09106882B2
    • 2015-08-11
    • US13879909
    • 2012-04-26
    • Takahiro YamaguchiToshihisa NakanoMotoji OhmoriKaoru Murase
    • Takahiro YamaguchiToshihisa NakanoMotoji OhmoriKaoru Murase
    • H04N9/80H04N9/79H04L9/08H04L9/32H04N21/6334H04N21/4147
    • H04N9/79H04L9/0825H04L9/3263H04N21/4147H04N21/6334
    • A terminal device 500 that is connected to a key distribution device 400 via a network, and in which a recording medium device 600 is mounted, the key distribution device 400 being for distributing a title key necessary for use of content, the recording medium device 600 being for storing therein the content and the title key. The recording medium device 600 and the key distribution device 400 perform mutual authentication and share shared keys that are identical to each other. The terminal device 500 comprises: a reception unit that receives an encrypted title key from the key distribution device 400, the encrypted title key being the title key encrypted with the shared key of the key distribution device 400; and a transfer unit 513 that transmits the encrypted title key to the recording medium device 600. Upon completion of the mutual authentication between the recording medium device 600 and the key distribution device 400, the reception unit and the transfer unit 513 refrain from any involvement with communication data except reception and transmission thereof, the communication data being exchanged between the recording medium device 600 and the key distribution device 400 with use of the shared keys.
    • 一种终端设备500,其经由网络连接到密钥分发设备400,并且其中安装有记录介质设备600,密钥分配设备400用于分发使用内容所需的标题密钥,记录介质设备600 用于存储内容和标题密钥。 记录介质装置600和密钥分发装置400执行相互认证并共享彼此相同的共享密钥。 终端设备500包括:接收单元,其从密钥分发设备400接收加密的标题密钥,加密的标题密钥是使用密钥分发设备400的共享密钥加密的标题密钥; 以及将加密的标题密钥发送到记录介质装置600的传送单元513.在完成记录介质装置600和密钥分发装置400之间的相互认证之后,接收单元和传送单元513不参与 除了接收和发送之外的通信数据,通过使用共享密钥在记录介质设备600和密钥分发设备400之间交换通信数据。