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1. 发明授权

US06956951B2 Extended key preparing apparatus, extended key preparing method, recording medium and computer program 失效
标题翻译：扩展密钥准备装置，扩展密钥准备方法，记录介质和计算机程序
公开(公告)号：US06956951B2
公开(公告)日：2005-10-18
申请号：US09811551
申请日：2001-03-20
申请人： Takeshi Shimoyama , Koichi Ito , Masahiko Takenaka , Naoya Torii , Jun Yajima , Hitoshi Yanami , Kazuhiro Yokoyama
发明人： Takeshi Shimoyama , Koichi Ito , Masahiko Takenaka , Naoya Torii , Jun Yajima , Hitoshi Yanami , Kazuhiro Yokoyama
IPC分类号： H04L9/06 , H04L9/00
CPC分类号： H04L9/0625 , H04L2209/12
摘要： Intermediate data ai, bi, ci, and di are prepared by an intermediate data preparing equipment 4 from a cryptographic key through a nonlinear type function operation and the like, an extended key preparing equipment 5 selects a [Xr], b [Yr], c [Zr], and d [Wr] corresponding to the number of stages r from the intermediate data, and rearranges the data as well as conducts that of bit operation to prepare extended keys, whereby an extended key preparing apparatus by which an extended key required in the case where common key cryptosystem is applied can be safely prepared at a high speed, a process for preparing such an extended key, and a recording medium used therefor are provided.
摘要翻译：中间数据准备设备（中间数据准备设备）通过中间数据准备设备来制备中间数据，中间数据和/ 通过非线性类型函数操作等从加密密钥4输出的数据，扩展密钥准备设备5选择[X，R]，b [Y] Z＆lt; r＆gt;]和对应于来自中间数据的级数r的d [W SUB]，并且重新排列数据，并且进行位操作以进行准备扩展密钥，从而可以高速安全地准备应用公共密钥密码系统所需的扩展密钥的扩展密钥准备装置，用于制备这样的扩展密钥的处理及其使用的记录介质。

2. 发明授权

US07065788B2 Encryption operating apparatus and method having side-channel attack resistance 有权
标题翻译：具有侧信道攻击阻力的加密操作装置和方法
公开(公告)号：US07065788B2
公开(公告)日：2006-06-20
申请号：US10278838
申请日：2002-10-24
申请人： Jun Yajima , Kouichi Itoh , Masahiko Takenaka , Naoya Torii
发明人： Jun Yajima , Kouichi Itoh , Masahiko Takenaka , Naoya Torii
IPC分类号： G06F1/24
CPC分类号： G06F7/723 , G06F7/728 , G06F2207/7238
摘要： Ciphertext X and a constant C having relationships C>p and C>q with respect to secret keys p and q are input, and correction values C−dp and C−dq (dp=d mod (p−1), dq=d mod (q−1)) are obtained. Then, the ciphertext X is multiplied by the constant C. A remainder operation using the secret key p or q as a remainder value is conducted with respect to the multiplication result. A modular exponentiation operation based on a Chinese remainder theorem is conducted with respect to the remainder operation result, and a correction operation using a correction value C−dp or C−dq is conducted. Thereafter, plaintext Y before being encrypted is calculated.
摘要翻译：输入密文X和关于秘密密钥p和q具有关系C> p和C> q的常数C，并且校正值C SUP和D D < （dp = d mod（p-1），dq = d mod（q-1））。然后，将密文X乘以常数C.使用秘密密钥p或q作为余数值的余数运算相对于相乘结果进行。对余数运算结果进行基于中文余数定理的模幂运算，使用校正值C -dp或C-Dq 的修正运算是进行。此后，计算加密前的明文Y。

3. 发明授权

US06330332B1 Prime number generation apparatus B-smoothness judgement apparatus and computer memory product 失效
标题翻译：主号生成装置B平滑判断装置和计算机存储器产品
公开(公告)号：US06330332B1
公开(公告)日：2001-12-11
申请号：US09037853
申请日：1998-03-10
申请人： Koichi Itoh , Kazuhiro Yokoyama , Naoya Torii , Masahiko Takenaka
发明人： Koichi Itoh , Kazuhiro Yokoyama , Naoya Torii , Masahiko Takenaka
IPC分类号： H04L900
CPC分类号： G06F7/72 , G06F17/10 , G06F2207/7204 , H04L9/002 , H04L9/3033 , H04L2209/08
摘要： One or a plurality of prime numbers pi which are generated and a generated random number are used to calculate a larger prime number candidate, and a judgment is made as to whether or not the prime number candidate is a prime number by using a provable prime number judging method, and when the judgment is made that the candidate is a prime number, the prime number p is outputted. As for at least three polynomials F(p) which are factors of ps−1 (s: arbitrary natural number) by a prime number p, a measure against prime factorization is taken. Moreover, when the prime number p is used for a secret key of RSA cryptosystem, a strong prime number p against the iterated-encryption attack on RSA cryptosystem is generated.
摘要翻译：使用生成的一个或多个素数pi和生成的随机数来计算较大的素数候选，并且通过使用可证明的素数来确定素数候选是否是素数判断方法，当判断候选者是质数时，输出质数p。对于素数p为ps-1（s：任意自然数）的因子的至少三个多项式F（p），采用针对素因子分解的度量。此外，当素数p用于RSA密码系统的秘密密钥时，产生对RSA密码系统的迭代加密攻击的强素数p。

4. 发明授权

US07386130B2 Encryption secured against DPA 有权
标题翻译：针对DPA的加密
公开(公告)号：US07386130B2
公开(公告)日：2008-06-10
申请号：US10028265
申请日：2001-12-28
申请人： Koichi Ito , Masahiko Takenaka , Naoya Torii
发明人： Koichi Ito , Masahiko Takenaka , Naoya Torii
IPC分类号： H04L9/00 , H04K1/00
CPC分类号： H04L9/003 , H04L2209/04 , H04L2209/12
摘要： The encryption device includes a random number generator for generating a random number; and a first selector for selecting one of q fixed values in response to the random number, a second selector for selecting one set of q sets of fixed S-box tables in response to the random number. An XOR XORs an input with an XOR of a key with the fixed value. A nonlinear transform transforms an input nonlinearly in accordance with the selected set of fixed S-box tables. Another encryption device includes a plurality of encrypting units coupled in parallel, and a selector for selecting one of the plurality of encrypting units in response to the random number. The masking with the fixed values improves the processing speed and reduces the required RAM area.
摘要翻译：加密装置包括用于产生随机数的随机数发生器; 以及第一选择器，用于响应于所述随机数来选择q个固定值之一;第二选择器，用于响应于所述随机数来选择一组q个固定S盒表。异或运算具有固定值的键的XOR的输入。非线性变换根据所选择的固定S盒表组非线性地变换输入。另一个加密装置包括并行耦合的多个加密单元和用于响应于该随机数来选择多个加密单元之一的选择器。具有固定值的屏蔽可提高处理速度，并减少所需的RAM区域。

5. 发明授权

US5953416A Data processing apparatus 失效
标题翻译：数据处理装置
公开(公告)号：US5953416A
公开(公告)日：1999-09-14
申请号：US825696
申请日：1997-03-20
申请人： Takayuki Hasebe , Naoya Torii , Masahiko Takenaka
发明人： Takayuki Hasebe , Naoya Torii , Masahiko Takenaka
IPC分类号： G06F12/14 , G06F21/24 , G09C1/00 , H04L9/00
CPC分类号： G06F12/1408
摘要： A data processing apparatus serves as I/O units coupled to information processes apparatuses such as computers. The data processing apparatus decodes encrypted data and performs processing according to message data. The data processing apparatus includes a data processing circuit performing decoding processing and message processing according to message data, a data buffer accessible from both the data processing circuit and the information processing apparatus, a data buffer monitor circuit monitoring states of read/write of the data to the data buffer, and an access control circuit controlling an access from the information processing apparatus to the data buffer.
摘要翻译：数据处理装置用作耦合到诸如计算机的信息处理装置的I / O单元。数据处理装置对加密数据进行解码，并根据消息数据进行处理。数据处理装置包括：数据处理电路，根据消息数据执行解码处理和消息处理，数据缓冲器，可从数据处理电路和信息处理装置接收;数据缓冲器监视电路监视数据的读/写的状态以及控制从信息处理设备到数据缓冲器的访问的访问控制电路。

6. 发明授权

US07792893B2 Device and method for calculating conversion parameter of montgomery modular multiplication and program therefor 有权
标题翻译：用于计算montgomery模数乘法的转换参数的装置和方法及其程序
公开(公告)号：US07792893B2
公开(公告)日：2010-09-07
申请号：US11230592
申请日：2005-09-21
申请人： Kouichi Itoh , Masahiko Takenaka , Naoya Torii
发明人： Kouichi Itoh , Masahiko Takenaka , Naoya Torii
IPC分类号： G06F7/38 , G06F7/00
CPC分类号： G06F7/728
摘要： A method for calculating a conversion parameter of the Montgomery modular multiplication to improve the efficiency of software installation, comprising a first step for calculating H0=2v×R (mod n) (where v is an integer, v≧1, and (m×k)/v is an integer), a second step for calculating Hp=2v×2^p×R (mod n) from H0=2v×R (mod n) by repeating Hi=REDC(Hi−1, Hi−1)n with respect to i=1, 2, . . . , p (where p represents an integer satisfying the condition 2p≧(m×k)/v>2p−1, REDC represents the Montgomery modular multiplication REDC(a, b)n=a×b×R−1 (mod n), and x^i represents exponential computation xi); and a third step for calculating Hp=R2 (mod n) by calculating Hp=REDC(Hp, g)n with respect to Hp obtained in the second step when 2p>(m×k)/v (where g=2k×E(p,m,k), E(p, m, k)=2×m−(v×2p)/k) and finally outputting Hp as R2 (mod n).
摘要翻译：一种用于计算蒙哥马利乘积的转换参数以提高软件安装效率的方法，包括计算H0 = 2v×R（mod n）的第一步骤（其中v是整数，v≥1，（m× k）/ v是整数），通过重复Hi = REDC（Hi-1，Hi-1）从H0 = 2v×R（mod n）计算Hp = 2v×2 ^ p×R（mod n））n相对于i = 1,2。。。，p（其中p表示满足条件2p≥（m×k）/ v> 2p-1的整数，REDC表示蒙哥马利模乘REDC（a，b）n = a×b×R-1（mod n），x ^ i表示指数计算xi）; 以及第三步骤，当2p>（m×k）/ v（其中g = 2k×E）时，通过计算相对于在第二步骤中获得的Hp的Hp = REDC（Hp，g）n来计算Hp = R2（mod n）（p，m，k），E（p，m，k）= 2×m-（v×2p）/ k），最后输出Hp为R2（mod n）。

7. 发明申请

US20060093137A1 Elliptic curve cryptosystem apparatus, elliptic curve cryptosystem method, elliptic curve cryptosystem program and computer readable recording medium storing the elliptic curve cryptosystem program 有权
标题翻译：椭圆曲线密码系统装置，椭圆曲线密码系统方法，椭圆曲线密码系统程序和存储椭圆曲线密码系统程序的计算机可读记录介质
公开(公告)号：US20060093137A1
公开(公告)日：2006-05-04
申请号：US11311590
申请日：2005-12-16
申请人： Tetsuya Izu , Kouichi Itoh , Masahiko Takenaka , Naoya Torii
发明人： Tetsuya Izu , Kouichi Itoh , Masahiko Takenaka , Naoya Torii
IPC分类号： H04L9/30
CPC分类号： G06F7/725 , G06F2207/7223 , G06F2207/7228 , H04L9/003 , H04L9/3066 , H04L2209/08
摘要： An elliptic curve cryptosystem apparatus performing an elliptic curve cryptosystem process has a coordinate transforming unit for transforming coordinates (X:Y:Z) on a point P on an elliptic curve over a finite field GF(pˆm) to coordinates (r1×(X−s1):r2×(Y−s2):r3×(Z−s3)) (where, p is a prime number, m is an integer not less than 1, r1, r2 and r3 are integers not less than 1 and not larger than (p−1), s1, s2 and s3 are integer not less than 0 and not larger than (p−1), and a code “ˆ” represents power), and a scalar multiplication operating unit for performing scalar multiplication on the point on the elliptic curve transformed by the coordinate transforming unit, wherein at least one of the parameters s1, s2 and s3 has a value other than 0. The apparatus can perform the scalar multiplication in the elliptic curve cryptosystem, with resistance to side channel attacks.
摘要翻译：执行椭圆曲线密码系统处理的椭圆曲线密码系统装置具有坐标变换单元，用于将有限域GF（pm）上的椭圆曲线上的点P上的坐标（X：Y：Z）变换为坐标（r1x（X-s1 ）：r2x（Y-s2）：r3x（Z-s3））（其中，p是质数，m是不小于1的整数，r1，r2和r3是不小于1且不大于 p-1），s1，s2和s3是不小于0且不大于（p-1）的整数，代码“”表示功率），以及标量乘法运算单元，用于对该点上的点进行标量乘法由坐标变换单元变换的椭圆曲线，其中，参数s1，s2和s3中的至少一个具有不同于0的值。该装置可以执行椭圆曲线密码系统中具有抗侧信道攻击的标量乘法。

8. 发明申请

US20050152541A1 Tamper-proof elliptic encryption with private key 有权
标题翻译：具有私钥的防篡改椭圆加密
公开(公告)号：US20050152541A1
公开(公告)日：2005-07-14
申请号：US11045111
申请日：2005-01-31
申请人： Masahiko Takenaka , Tetsuya Izu , Kouichi Itoh , Naoya Torii
发明人： Masahiko Takenaka , Tetsuya Izu , Kouichi Itoh , Naoya Torii
IPC分类号： G06F7/72 , G09C1/00 , H04K1/00 , H04L9/30
CPC分类号： G06F7/725 , G06F2207/7223
摘要： An encryption device (FIG. 15) performs elliptic curve encryption using a secret key. The encryption device includes: operation means (ECDBL, ECADD) for performing scalar multiplication of a point on an elliptic curve; storage (T[0]-T[2]) having a plurality of data storing areas; and means (SEL) for determining, in accordance with a bit sequence of a given value (d) and with a random value (RNG), an address of one of the plurality of data storage areas that is to be coupled to the operation means for each scalar multiplication.
摘要翻译：使用秘密密钥进行加密装置（图15

9. 发明授权

US06829592B1 Data protection system, data preparation device, and data working device 失效
标题翻译：数据保护系统，数据准备装置和数据工作装置
公开(公告)号：US06829592B1
公开(公告)日：2004-12-07
申请号：US09000924
申请日：1997-12-30
申请人： Takayuki Hasebe , Naoya Torii , Masahiko Takenaka , Souichi Okada , Yuji Kijima
发明人： Takayuki Hasebe , Naoya Torii , Masahiko Takenaka , Souichi Okada , Yuji Kijima
IPC分类号： G06F1721
CPC分类号： G06F21/10 , G06F21/62 , Y10S707/99945 , Y10S707/99948
摘要： When a user works data required for allowance for the use thereof, the work processing is carried out by utilizing an exclusive work processing device. Thereafter, only the data of work information indicating what kind of working has been made to the original data (for example, differential static image data indicating a difference between the original static image required for allowance for the use and the static image after having been worked) is stored, whereby the use without permission of the data is prevented.
摘要翻译：当用户工作所需的数据用于允许使用时，通过利用排他性处理装置来执行工作处理。此后，仅仅是指示对原始数据进行什么样的工作的工作信息的数据（例如，指示在使用中允许使用的原始静态图像与被处理后的静态图像之间的差异的差分静态图像数据），从而防止数据允许的使用。

10. 发明授权

US06415310B1 Remainder calculating method, modular-multiplication method, remainder calculating apparatus, modular-multiplication apparatus and recording medium 失效
标题翻译：剩余计算方法，乘法法，余数计算装置，模数乘法装置和记录介质
公开(公告)号：US06415310B1
公开(公告)日：2002-07-02
申请号：US09412502
申请日：1999-10-05
申请人： Masahiko Takenaka , Naoya Torii
发明人： Masahiko Takenaka , Naoya Torii
IPC分类号： G06F772
CPC分类号： G06F7/728
摘要： In a remainder calculating method and a modular-multiplication method on the basis of a Montgomery method, a number expressed by N (N=c2d±1) is used as a divisor N. In order to calculate a remainder in the case of dividing a dividend Y by a divisor N on the basis of a Montgomery method, a number expressed by a condition of N=c2d−1 is used as the divisor N, and the following steps are repeatedly carried out; the steps includes: a step of adding a product of a least digit value yo of the dividend Y and c to a lower d-bit position of the dividend Y; and a step of setting a portion excluding the least digit of the additive result as a next dividend.
摘要翻译：在基于蒙哥马利方法的余数计算方法和模乘法中，使用N（N = c2d±1）表示的数作为除数N.为了计算在除数除数N由蒙哥马利方法计算，由N = c2d-1的条件表示的数字用作除数N，并重复执行以下步骤：所述步骤包括：将除数Y和c的最小数字值yo的乘积加到所述除数Y的较低d位位置的步骤; 以及将除了加法结果的最小数字之外的部分设置为下一个分红的步骤。

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