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    • 5. 发明授权
    • Information processing device, card device and information processing system
    • 信息处理设备,卡设备和信息处理系统
    • US07086087B1
    • 2006-08-01
    • US09599005
    • 2000-06-22
    • Masahiro KaminagaTakashi EndoMasaru OhkiTakashi TsukamotoHiroshi WataseChiaki TerauchiKunihiko NakadaNobutaka NagasakiSatoshi TairaYuuichirou NariyoshiYasuko Fukuzawa
    • Masahiro KaminagaTakashi EndoMasaru OhkiTakashi TsukamotoHiroshi WataseChiaki TerauchiKunihiko NakadaNobutaka NagasakiSatoshi TairaYuuichirou NariyoshiYasuko Fukuzawa
    • H04L9/00H04N7/167
    • G07F7/1008G06K19/063G06Q20/341G07F7/082
    • It is a technological object of the present invention to provide an information processing device, a card and a card system that have a high level of security. In order to achieve the object described above, the present invention provides a data processing apparatus comprising at least a first information processing device and a second information processing device connected to the first information processing device by a signal line, the data processing apparatus having a means for changing power consumption on the signal line during transmission of a signal through the signal line in accordance with an actual state of the power consumption that would be observed when the means were not used. Furthermore, the present invention also provides another data processing apparatus comprising at least a first information processing device and a second information processing device connected to the first information processing device by a signal line wherein, between at least either the first information processing device or the second information processing device and the signal line, a signal from the first information processing device or the second information processing device can be encrypted and a signal received from the signal line can be decrypted. In addition, the present invention also provides a further data processing apparatus comprising at least an information processing device, an information memory device and a signal line connected at least to the information processing device wherein at least in an operation to store information into the information memory device, the information is encrypted, and information stored in the information memory device can be decrypted.
    • 本发明的技术目的在于提供具有高安全性的信息处理装置,卡片和卡片系统。 为了实现上述目的,本发明提供了一种数据处理装置,包括至少第一信息处理装置和通过信号线连接到第一信息处理装置的第二信息处理装置,该数据处理装置具有装置 用于根据当不使用装置时将观察到的功耗的实际状态,在通过信号线的信号传输期间改变信号线上的功率消耗。 此外,本发明还提供了另一种数据处理装置,其至少包括通过信号线连接到第一信息处理装置的第一信息处理装置和第二信息处理装置,其中,在至少第一信息处理装置或第二信息处理装置 信息处理装置和信号线,可以加密来自第一信息处理装置或第二信息处理装置的信号,并且可以解密从信号线接收的信号。 另外,本发明还提供了一种数据处理装置,至少包括信息处理装置,信息存储装置和至少连接到信息处理装置的信号线,其中至少在将信息存储到信息存储器中的操作中 信息被加密,并且存储在信息存储装置中的信息可被解密。
    • 6. 发明授权
    • Information processing device, information processing method and smartcard
    • 信息处理设备,信息处理方法和智能卡
    • US06666381B1
    • 2003-12-23
    • US09809214
    • 2001-03-16
    • Masahiro KaminagaTakashi EndoTakashi WatanabeMasaru Ohki
    • Masahiro KaminagaTakashi EndoTakashi WatanabeMasaru Ohki
    • G06K1906
    • G06F9/3001G06F7/722G06F7/723G06F7/725G06F2207/7252H04L9/003H04L9/3073H04L2209/08H04L2209/127
    • A tamper-resistant information device for use with IC cards, etc. having high security. The tamper-resistant information device has an input unit for inputting a signal, a storage unit for storing a program, an operation unit for performing predetermined data processing according to a program, and an output unit for outputting a signal. The program stored in the above storage unit includes one or more data processing instructions giving an execution direction to the operation unit. When the signal input from the above data inputting unit is subjected to data processing, at least one of the above data processing instructions instructs an operation on a signal A and a signal B to be performed, where the signal B is used for a given calculation in data processing, the above operation including the steps of: arbitrarily dividing the signal A or B into pieces; performing a given operation on each piece of the divided signal and on the remaining undivided signal, separately; and adding all the operation results to obtain the proper encrypted signal.
    • 用于具有高安全性的IC卡等的防篡改信息装置。 防篡改信息装置具有用于输入信号的输入单元,用于存储程序的存储单元,用于根据程序执行预定数据处理的操作单元和用于输出信号的输出单元。 存储在上述存储单元中的程序包括向操作单元给出执行方向的一个或多个数据处理指令。 当从上述数据输入单元输入的信号进行数据处理时,上述数据处理指令中的至少一个指令执行对信号A和信号B的操作,其中信号B用于给定的计算 在数据处理中,上述操作包括以下步骤:将信号A或B任意划分成片; 分别对每条划分的信号和剩余的未分割信号执行给定的操作; 并添加所有操作结果以获得正确的加密信号。
    • 7. 发明授权
    • Tamper-resistant processing method
    • 防篡改加工方法
    • US07254718B2
    • 2007-08-07
    • US09940985
    • 2001-08-29
    • Masahiro KaminagaTakashi EndoTakashi WatanabeMasaru Ohki
    • Masahiro KaminagaTakashi EndoTakashi WatanabeMasaru Ohki
    • G06F12/14H04L9/30
    • G06F7/723G06F9/3001G06F9/30181G06F2207/7252H04L9/003H04L9/302H04L2209/08H04L2209/127
    • The subject of the disclosed technology is, when a crypto-processing is performed utilizing an information processing device buried in an IC card, etc., to decrease the relationship between the waveform of the consumption current and the contents of the crypto-processing as a countermeasure against a tamper which observes the waveform of a consumption current.A solution means is shown in the following. When a decryption processing of an RSA cryptogram is performed according to CRT, in step 608, for every unit bit block of XP a modular exponentiation calculation is performed, and the partial result of CP up to the calculated bit block is stored in a memory. In step 609, for every unit bit block of XQ a modular exponentiation calculation is performed and the partial result of CQ up to the calculated bit block is stored in a memory. In step 606, a random number is generated, and in step 607, it is decided that step 608 is to be executed or step 609 is to be executed corresponding to the value of the random number.
    • 所公开的技术的主题是,当利用埋在IC卡等中的信息处理装置进行密码处理时,将消耗电流的波形与密码处理的内容之间的关系降低为 针对观察消耗电流波形的篡改的对策。 解决方案如下所示。 当根据CRT执行RSA密码的解密处理时,在步骤608中,对于XP的每个单位比特块进行模幂运算,并将CP的部分结果存储到存储器中。 在步骤609中,对于XQ的每个单位比特块,执行模幂运算,并将CQ的部分结果存储到存储器中。 在步骤606中,产生随机数,并且在步骤607中,确定要执行步骤608或者对应于随机数的值来执行步骤609。