ENCRYPTION DEVICE
    1.
    发明申请
    ENCRYPTION DEVICE 有权
    加密设备

    公开(公告)号:US20120307997A1

    公开(公告)日:2012-12-06

    申请号:US13585391

    申请日:2012-08-14

    IPC分类号: H04L9/28

    CPC分类号: H04L9/0631 H04L9/003

    摘要: According to an embodiment, an encryption device performs encryption processing using an encryption key and calculates encrypted data from plain data. The encryption device includes: a register; an input unit configured to receive plain data; a first partial encryption unit configured to calculate first intermediate data from the plain data; a second partial encryption unit configured to calculate (i+1)-th intermediate data based on i-th intermediate data and the encryption key; a first transform unit configured to: transform j-th intermediate data into j-th transformed data; and store the j-th transformed data in the register; and a second transform unit configured to transform the j-th transformed data into the j-th intermediate data; a third partial encryption unit configured to calculate encrypted data from the N-th intermediate data. The second partial encryption unit is configured to repeat processing to calculate (j+1)-th intermediate data while j is equal to from 1 to N−1.

    摘要翻译: 根据实施例,加密装置使用加密密钥进行加密处理,并从普通数据计算加密数据。 加密装置包括:寄存器; 输入单元,被配置为接收普通数据; 第一部分加密单元,被配置为从所述普通数据计算第一中间数据; 第二部分加密单元,被配置为基于第i个中间数据和加密密钥计算第(i + 1)个中间数据; 第一变换单元,被配置为:将第j个中间数据变换为第j变换数据; 并将第j个变换数据存储在寄存器中; 以及第二变换单元,被配置为将第j个变换后的数据变换为第j个中间数据; 第三部分加密单元,被配置为从第N个中间数据计算加密数据。 第二部分加密单元被配置为重复处理以计算(j + 1)中间数据,而j等于从1到N-1。

    Encryption device
    2.
    发明授权
    Encryption device 有权
    加密设备

    公开(公告)号:US08538017B2

    公开(公告)日:2013-09-17

    申请号:US13192122

    申请日:2011-07-27

    IPC分类号: H04L9/00

    摘要: According to one embodiment, in an encryption device, a segmentation unit segments masked plain data into pieces of first segmented data. A first processing unit generates pieces of second segmented data from the pieces of first segmented data. A nonlinear transform unit generates pieces of third segmented data transformed from the pieces of second segmented data. A data integration unit integrates fourth segmented data to generate masked encrypted data. An unmask processing unit generates encrypted data from the masked encrypted data. The exclusive OR of the pieces of second segmented data matches the exclusive OR of input data, subjected to nonlinear transform processing and calculated from the plain data, and the first mask. The exclusive OR of the pieces of third segmented data matches the exclusive OR of transform data, obtained when the nonlinear transform processing is performed on the input data, and the second mask.

    摘要翻译: 根据一个实施例,在加密设备中,分割单元将屏蔽的普通数据分割成多个第一分段数据。 第一处理单元从第一分段数据生成第二分段数据。 非线性变换单元生成从第二分割数据变换的第三分段数据。 数据集成单元集成第四分段数据以生成被掩蔽的加密数据。 解密处理单元从掩蔽的加密数据生成加密数据。 第二分段数据的异或与进行非线性变换处理并从普通数据计算的输入数据的异或与第一掩码相匹配。 第三分段数据的异或与对输入数据执行非线性变换处理时获得的变换数据的异或与第二掩码相匹配。

    ENCRYPTION DEVICE
    3.
    发明申请
    ENCRYPTION DEVICE 有权
    加密设备

    公开(公告)号:US20120069998A1

    公开(公告)日:2012-03-22

    申请号:US13192122

    申请日:2011-07-27

    IPC分类号: H04L9/00

    摘要: According to one embodiment, in an encryption device, a segmentation unit segments masked plain data into pieces of first segmented data. A first processing unit generates pieces of second segmented data from the pieces of first segmented data. A nonlinear transform unit generates pieces of third segmented data transformed from the pieces of second segmented data. A data integration unit integrates fourth segmented data to generate masked encrypted data. An unmask processing unit generates encrypted data from the masked encrypted data. The exclusive OR of the pieces of second segmented data matches the exclusive OR of input data, subjected to nonlinear transform processing and calculated from the plain data, and the first mask. The exclusive OR of the pieces of third segmented data matches the exclusive OR of transform data, obtained when the nonlinear transform processing is performed on the input data, and the second mask.

    摘要翻译: 根据一个实施例,在加密设备中,分割单元将屏蔽的普通数据分割成多个第一分段数据。 第一处理单元从第一分段数据生成第二分段数据。 非线性变换单元生成从第二分割数据变换的第三分段数据。 数据集成单元集成第四分段数据以生成被掩蔽的加密数据。 解密处理单元从掩蔽的加密数据生成加密数据。 第二分段数据的异或与进行非线性变换处理并从普通数据计算的输入数据的异或与第一掩码相匹配。 第三分段数据的异或与对输入数据执行非线性变换处理时获得的变换数据的异或与第二掩码相匹配。

    Encryption device
    4.
    发明授权
    Encryption device 有权
    加密设备

    公开(公告)号:US09288040B2

    公开(公告)日:2016-03-15

    申请号:US13585391

    申请日:2012-08-14

    IPC分类号: H04L9/06 H04L9/00

    CPC分类号: H04L9/0631 H04L9/003

    摘要: According to an embodiment, an encryption device performs encryption processing using an encryption key and calculates encrypted data from plain data. The encryption device includes: a register; an input unit configured to receive plain data; a first partial encryption unit configured to calculate first intermediate data from the plain data; a second partial encryption unit configured to calculate (i+1)-th intermediate data based on i-th intermediate data and the encryption key; a first transform unit configured to: transform j-th intermediate data into j-th transformed data; and store the j-th transformed data in the register; and a second transform unit configured to transform the j-th transformed data into the j-th intermediate data; a third partial encryption unit configured to calculate encrypted data from the N-th intermediate data. The second partial encryption unit is configured to repeat processing to calculate (j+1)-th intermediate data while j is equal to from 1 to N−1.

    摘要翻译: 根据实施例,加密装置使用加密密钥进行加密处理,并从普通数据计算加密数据。 加密装置包括:寄存器; 输入单元,被配置为接收普通数据; 第一部分加密单元,被配置为从所述普通数据计算第一中间数据; 第二部分加密单元,被配置为基于第i个中间数据和加密密钥计算第(i + 1)个中间数据; 第一变换单元,被配置为:将第j个中间数据变换为第j变换数据; 并将第j个变换数据存储在寄存器中; 以及第二变换单元,被配置为将第j个变换后的数据变换为第j个中间数据; 第三部分加密单元,被配置为从第N个中间数据计算加密数据。 第二部分加密单元被配置为重复处理以计算(j + 1)中间数据,而j等于从1到N-1。

    Arithmetic device
    5.
    发明授权
    Arithmetic device 失效
    算术设备

    公开(公告)号:US08782114B2

    公开(公告)日:2014-07-15

    申请号:US13355642

    申请日:2012-01-23

    IPC分类号: G06F7/00 H04L9/30

    CPC分类号: H04L9/3073

    摘要: According to one embodiment, a representation converting unit converts a set of n elements (h0, h1, . . . , hn−1) (hi: a member of a finite field Fp^m, 0≦i≦n−1) that is a projective representation of a member g of an n-th degree algebraic torus Tn(Fp^m) (n: positive integer, p: prime number, m: positive integer) into a limited projected representation expressed by a set of n elements (h′0, h′1, . . . , h′n−1) (h′i: a member of the finite field Fp^m, 0≦i≦n−1) in which at least one element out of the n elements is a zero element 0 or an identity element 1. An arithmetic unit omits part of Fp^m operation that is arithmetic operation in the finite field Fp^m based on a fact that an element in the set of n elements (h′0, h′1, . . . , h′n−1) represented by the limited projective representation is a zero element “0” or an identity element “1” when performing Fp^mn operation that is arithmetic operation of a finite field Fp^mn in combination with the Fp^m operation.

    摘要翻译: 根据一个实施例,表示转换单元将n个元素(h0,h1,...,hn-1)(hi:有限域Fp ^ m,0≦̸ i≦̸ n-1的成员)的集合转换为 是由一组n个元素表示的有限投影表示的n阶代数环面Tn(Fp ^ m)(n:正整数,p:素数,m:正整数)的成员g的投影表示 (h'0,h'1,...,h'n-1)(h'i:有限域Fp ^ m,0≦̸ i≦̸ n-1的成员),其中至少一个元素 n个元素是零元素0或身份元素1.算术单元省略了Fp ^ m操作的一部分,这是基于n个元素集合中的元素(h)的事实的有限域Fp ^ m中的算术运算 由有限的投影表示表示的'0,h'1,...,h'n-1'是执行Fp ^ mn操作时的零元素“0”或身份元素“1”,这是运算有限的 场Fp ^ mn结合 Fp ^ m操作。

    Arithmetic device, method, and program product
    6.
    发明授权
    Arithmetic device, method, and program product 有权
    算术设备,方法和程序产品

    公开(公告)号:US08924448B2

    公开(公告)日:2014-12-30

    申请号:US13422018

    申请日:2012-03-16

    摘要: An arithmetic device includes an input unit inputting data that are elements of a group; a converting unit is configured, when the input data are in a second representation, to convert the input data into a first representation and to perform arithmetic operation on the converted first representation using an operand in the first representation in which at least one subcomponent is a zero element to convert the converted first representation into first converted data expressed in the first representation, and when the input data are in the first representation, to perform arithmetic operation on the input data using the operand in the first representation in which at least one subcomponent is a zero element to convert the input data into second converted data expressed in the first representation; and an operating unit that performs arithmetic processing on the first or the second converted data using secret information.

    摘要翻译: 运算装置包括输入单元,输入作为组的要素的数据; 配置转换单元,当输入数据处于第二表示时,将输入数据转换为第一表示,并且使用第一表示中的操作数对转换的第一表示执行算术运算,其中至少一个子组件是 零元素以将转换后的第一表示转换为以第一表示表示的第一转换数据,以及当输入数据处于第一表示时,使用第一表示中的操作数对输入数据执行算术运算,其中至少一个子组件 是将输入数据转换成以第一表示表示的第二转换数据的零元素; 以及操作单元,其使用秘密信息对所述第一或第二转换数据执行算术处理。

    ARITHMETIC DEVICE, METHOD, AND PROGRAM PRODUCT
    8.
    发明申请
    ARITHMETIC DEVICE, METHOD, AND PROGRAM PRODUCT 有权
    算术设备,方法和程序产品

    公开(公告)号:US20120239721A1

    公开(公告)日:2012-09-20

    申请号:US13422018

    申请日:2012-03-16

    IPC分类号: G06F7/52

    摘要: An arithmetic device includes an input unit inputting data that are elements of a group; a converting unit is configured, when the input data are in a second representation, to convert the input data into a first representation and to perform arithmetic operation on the converted first representation using an operand in the first representation in which at least one subcomponent is a zero element to convert the converted first representation into first converted data expressed in the first representation, and when the input data are in the first representation, to perform arithmetic operation on the input data using the operand in the first representation in which at least one subcomponent is a zero element to convert the input data into second converted data expressed in the first representation; and an operating unit that performs arithmetic processing on the first or the second converted data using secret information.

    摘要翻译: 运算装置包括输入单元,输入作为组的要素的数据; 配置转换单元,当输入数据处于第二表示时,将输入数据转换为第一表示,并且使用第一表示中的操作数对转换的第一表示执行算术运算,其中至少一个子组件是 零元素以将转换后的第一表示转换为以第一表示表示的第一转换数据,以及当输入数据处于第一表示时,使用第一表示中的操作数对输入数据执行算术运算,其中至少一个子组件 是将输入数据转换成以第一表示表示的第二转换数据的零元素; 以及操作单元,其使用秘密信息对所述第一或第二转换数据执行算术处理。

    Method and apparatus for encrypting data
    10.
    发明授权
    Method and apparatus for encrypting data 有权
    用于加密数据的方法和装置

    公开(公告)号:US07159115B2

    公开(公告)日:2007-01-02

    申请号:US10658340

    申请日:2003-09-10

    IPC分类号: G06F1/24

    CPC分类号: H04L9/003

    摘要: An encryption apparatus provided with a Feistel type encryption algorithm includes a function operation unit that operates a non-linear function, and changing unit configured to supply the function operation unit with random data unrelated to an encryption operation result. In this way, a countermeasure can be taken against a DPA attack following the end of an operation by the encryption operation apparatus provided with the Feistel type encryption algorithm.

    摘要翻译: 具有Feistel型加密算法的加密装置包括操作非线性功能的功能操作单元,以及改变单元,被配置为向功能操作单元提供与加密操作结果无关的随机数据。 以这种方式,可以针对具有Feistel类型加密算法的加密操作装置的操作结束后的DPA攻击采取对策。