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

公开(公告)号：US6128799A

公开(公告)日：2000-10-10

申请号：US707665

申请日：1996-09-04

申请人： Yukiaki Nagata ,  Masanori Kanemitu ,  Tadashi Kanayama ,  Kouichi Itoh

发明人： Yukiaki Nagata ,  Masanori Kanemitu ,  Tadashi Kanayama ,  Kouichi Itoh

IPC分类号： B08B9/04 ,  B08B9/045 ,  E03F9/00

CPC分类号： E03F9/002 ,  B08B9/0436 ,  B08B9/045 ,  B08B9/047

摘要： A smoothing device, according to the present invention, is used to perform smoothing in a conduit line, or the like. The smoothing device has a fluid pressure motor with a cutter attached to its output shaft and guide rollers for guiding the smoothing device in the longitudinal direction of the conduit line. Prescribed ones among the guide rollers are relatively movable in the radial direction of the conduit line by fluid pressure cylinders, springs, or the like, and pressed against the inner wall of the conduit line. The remaining guide rollers are fixed to the smoothing device with respect to the radial direction of the conduit line so as to have an automatic aligning mechanism, thereby keeping the rotatable cutter along the center of the conduit line. In the fluid pressure motor, turbine and water nozzles, for injecting water to the turbine, are detachable, facilitating the replacement of worn parts. To easily advance the smoothing device, a propelling device, using a plurality of propelling shafts connected by universal joints with rollers disposed near the connected portions of the shafts and using screws, is provided. To facilitate the discharge of the removed debris and drainage, a high-pressure water jet pump is provided. The coupler absorbing the rotation is attached to the front face of the cutter thus enabling the smoothing device to be towed in the direction of the cutter with a rope.

摘要翻译： 根据本发明的平滑装置用于在导管管线等中执行平滑化。 平滑装置具有流体压力马达，其具有附接到其输出轴的切割器和用于沿着导管线的纵向方向引导平滑装置的导向辊。 导辊之间规定的导辊可以通过流体压力缸，弹簧等在管道的径向方向上相对移动，并且压靠导管线的内壁。 剩下的导辊相对于导管的径向方向固定在平滑装置上，从而具有自动对准机构，从而沿着导管线的中心保持可旋转切割器。 在流体压力马达中，用于将水喷射到涡轮机的涡轮机和水喷嘴是可拆卸的，便于更换磨损部件。 为了容易地推进平滑装置，提供了一种推进装置，其使用通过万向接头连接的多个推进轴，其中设置在轴的连接部分附近并使用螺钉的辊。 为了便于排出的碎屑和排出物，提供了高压水喷射泵。 吸收旋转的联接器附接到切割器的前表面，从而使得平滑装置能够用绳索沿切割器的方向拖曳。

公开(公告)号：US5887110A

公开(公告)日：1999-03-23

申请号：US623172

申请日：1996-03-28

申请人： Hideki Sakamoto ,  Tomoaki Kawaguchi ,  Hideharu Suzuki ,  Tatsuo Mori ,  Hiroyuki Kimiyama ,  Kazutoshi Nishimura ,  Kouichi Itoh ,  Mitsuru Maruyama ,  Hiroshi Sugiyama ,  Akira Uemori ,  Kazuo Okada

发明人： Hideki Sakamoto ,  Tomoaki Kawaguchi ,  Hideharu Suzuki ,  Tatsuo Mori ,  Hiroyuki Kimiyama ,  Kazutoshi Nishimura ,  Kouichi Itoh ,  Mitsuru Maruyama ,  Hiroshi Sugiyama ,  Akira Uemori ,  Kazuo Okada

IPC分类号： H04N5/783 ,  H04N7/26 ,  H04N9/804 ,  H04N21/2387

CPC分类号： H04N21/2387 ,  H04N19/40 ,  H04N5/783 ,  H04N9/8042

摘要： A video data playback system for reproducing requested video data by switching coded video data to be reproduced between normal playback coded video data and fast playback coded video data according to a requested playback mode, where the normal playback coded video data are encoded by a first video coding scheme using both intra-frame coding and inter-frame coding, while the fast playback coded video data are encoded by a second video coding scheme using only intra-frame coding and having a playback bit rate and a frame rate identical to those of the normal playback coded video data. The normal playback coded video data can be obtained by encoding the original video data first, then the fast playback coded video data can be obtained by encoding selectively decoded normal playback coded video data. Alternatively, the normal and fast playback coded video data can be obtained by synchronizing start and end of encoding by the first video coding scheme and encoding by the second video coding scheme.

摘要翻译： 一种视频数据播放系统，用于根据请求的播放模式切换要在正常重放编码视频数据和快速重放编码视频数据之间再现的编码视频数据，再现所请求的视频数据，其中正常重放编码视频数据由第一视频 使用帧内编码和帧间编码的编码方案，而快速重放编码的视频数据由仅使用帧内编码的第二视频编码方案编码，并且具有与帧内编码相同的重放比特率 正常重放编码的视频数据。 可以通过首先对原始视频数据进行编码来获得正常重放编码视频数据，然后通过对选择性地解码的普通重放编码视频数据进行编码来获得快速重放编码视频数据。 或者，正常和快速重放编码的视频数据可以通过使第一视频编码方案的编码开始和结束同步并通过第二视频编码方案的编码来获得。

公开(公告)号：US4860715A

公开(公告)日：1989-08-29

申请号：US199650

申请日：1988-05-27

申请人： Akira Hiraku ,  Morio Minezawa ,  Isao Katoh ,  Kouichi Itoh

发明人： Akira Hiraku ,  Morio Minezawa ,  Isao Katoh ,  Kouichi Itoh

IPC分类号： B60K15/035 ,  B60K15/04 ,  F02M25/08

CPC分类号： F02M25/0836 ,  B60K15/03504 ,  B60K15/04

摘要： A device for purifying fuel vapors generated in vehicle fuel tank including a valve which normally closes a through hole provided in an upper wall of the tank and communicating with a canister through a conduit, a flap provided for normally closing a filler pipe mounted for refuelling the tank and adapted to be opened by a fuel dispensing nozzle inserted in the filler pipe, and a member for connecting the flap with the valve so as to transmit the opening movement of the flap to the valve to open the latter for allowing the fuel vapors in the tank to pass through the hole and the conduit into the canister.

摘要翻译： 一种用于净化在车辆燃料箱中产生的燃料蒸汽的装置，包括通常关闭设置在罐的上壁中的通孔并通过导管与罐连通的阀，用于正常关闭用于加油的加油管 并且适于通过插入在加注管中的燃料分配喷嘴打开，以及用于将翼片与阀连接的构件，以将翼片的打开运动传递到阀门，以打开后者，用于允许燃料蒸气 罐通过孔和导管进入罐。

公开(公告)号：US08817973B2

公开(公告)日：2014-08-26

申请号：US12890212

申请日：2010-09-24

申请人： Kouichi Itoh

发明人： Kouichi Itoh

IPC分类号： H04L9/00 ,  H04L9/30 ,  G06F7/72

CPC分类号： G06F7/723 ,  G06F2207/7219 ,  H04L9/003 ,  H04L9/302

摘要： Based on an encrypting method for performing an exponential remainder calculation y=ad (mod n) from an u-bit exponent d=(du-1, . . . , d0)2, input data a, and a modulo n, calculating a′=a2(mod n) is performed first. Next, calculating y=(a′)f(mod n) is performed on f=(du-1, du-2, . . . , d1)2. Then, when d0=1, calculating y=y×a (mod n) is performed. Then, outputting y=ad (mod n) is performed. In the first step, although an attacker inputs data including a minus value such as a=−1 and a=s, −s, etc., only plus values can be constantly generated in multiplication and squaring. Therefore, the method makes it hard to estimate a secret key using power analyzing attacks such as the SPA and the DPA, thereby realizing an encryption processor having high tamper-resistance.

摘要翻译： 基于用于从u位指数d =（du-1，...，d0）2执行指数余数计算y = ad（mod n）的加密方法，输入数据a和模n， '= a2（mod n）被首先执行。 接下来，对f =（du-1，du-2，...，d1）2进行y =（a'）f（mod n）的计算。 然后，当d0 = 1时，执​​行y = y×a（mod n）的计算。 然后，输出y = ad（mod n）。 在第一步中，尽管攻击者输入包括诸如a = -1和a = s，-s等的负值的数据，但是只能在乘法和平方中产生加值。 因此，该方法难以使用诸如SPA和DPA的功率分析攻击来估计秘密密钥，从而实现具有高抗篡改性的加密处理器。

公开(公告)号：US08638927B2

公开(公告)日：2014-01-28

申请号：US12886051

申请日：2010-09-20

申请人： Masahiko Takenaka ,  Kouichi Itoh

发明人： Masahiko Takenaka ,  Kouichi Itoh

IPC分类号： H04K1/00

CPC分类号： G06F7/723 ,  G06F2207/7242 ,  H04L9/003 ,  H04L9/302 ,  H04L2209/127

摘要： 401 stores, in 302, key d′ obtained by subtracting random number 2r held in 201 from key d held in 105. When an operation starts, the values “−C” and “−C2” are calculated respectively, and the resultant values are stored in a multiplication table memory 205 together with value “C”. In a first operation cycle, 107 selects and outputs an intermediate value 108 held in an in-operation data register 103, and thereby makes a modular-multiplication operation circuit 104 perform squaring. In the second operation cycle, 107 selects and outputs one of three values held in 205 in accordance with the combination of key bit value d′i and random number bit value ri, and thereby makes the modular-multiplication operation circuit 104 perform multiplication. Thereby, a cryptographic processing device that requires a short operation time period, small circuit scale, and has sufficient security can be realized.

摘要翻译： 401在302中存储通过从保持在105中的密钥d减去在201中保留的随机数2r获得的密钥d'。当操作开始时，分别计算值“-C”和“-C2”，并且得到的值为 与值“C”一起存储在乘法表存储器205中。 在第一操作周期中，107选择并输出保持在工作数据寄存器103中的中间值108，从而使得乘法运算电路104进行平方。 在第二操作周期中，107根据密钥位值d i和随机数位值ri的组合来选择并输出保持在205中的三个值之一，从而使乘法运算电路104进行乘法运算。 因此，可以实现需要短操作时间段，小电路规模并且具有足够安全性的密码处理装置。

公开(公告)号：US08369516B2

公开(公告)日：2013-02-05

申请号：US12889096

申请日：2010-09-23

申请人： Kouichi Itoh ,  Souichi Okada ,  Masahiko Takenaka

发明人： Kouichi Itoh ,  Souichi Okada ,  Masahiko Takenaka

IPC分类号： G06F21/00

CPC分类号： H04L9/0631 ,  H04L9/003 ,  H04L2209/046 ,  H04L2209/08 ,  H04L2209/122

摘要： A common key block encryption apparatus for performing a nonlinear transformation with a multiplication executed in a binary field or a composite field includes a computing unit to execute a computation other than the nonlinear transformation with fixed value masked input data obtained by XORing input data with a fixed mask value, an XOR operation circuit to transform all input data into fixed value masked input data by XORing the input data with a fixed mask value and to transform the data into random value masked input data by XORing the input data with a random mask value in the multiplication, a multiplier to execute a multiplication based on the random value masked input data output from the XOR operation circuit, and a random value mask-to-fixed mask value transformation circuit to again transform the random value masked output data into fixed value masked output data and to output the data.

摘要翻译： 用于通过在二进制字段或复合字段中执行的乘法执行非线性变换的公共密钥块加密装置包括：计算单元，用于执行非线性变换以外的计算，该固定值掩码输入数据通过将具有固定值的输入数据进行异或 掩模值，XOR运算电路，通过用固定的掩码值对输入数据进行异或，将所有输入数据变换为固定值掩码输入数据，并通过将输入数据以随机掩码值进行异或来将数据变换为随机值屏蔽输入数据 乘法，乘法器，用于根据从异或运算电路输出的随机值屏蔽输入数据执行乘法，以及随机值掩码到固定掩码值变换电路，以将随机值屏蔽输出数据再次转换为固定值掩码 输出数据并输出数据。

公开(公告)号：US08295479B2

公开(公告)日：2012-10-23

申请号：US12834247

申请日：2010-07-12

申请人： Dai Yamamoto ,  Jun Yajima ,  Kouichi Itoh

发明人： Dai Yamamoto ,  Jun Yajima ,  Kouichi Itoh

IPC分类号： H04L9/06

CPC分类号： H04L9/0625 ,  H04L2209/122 ,  H04L2209/125 ,  H04L2209/20 ,  H04L2209/24

摘要： In a MISTY1 FI function, an exclusive OR to which a round key KIij2 is inputted is arranged between an exclusive OR arranged on a 9-bit critical path in a first MISTY structure and a zero-extend conversion connected to the branching point of a 7-bit right system data path. Then, a 9-bit round key KIij1 is truncate-converted to seven bits, the exclusive OR of the seven bits and the round key KIij1 is calculated by an exclusive OR and the calculation result is inputted to an exclusive OR arranged on the right system data path in the second stage MISTY structure.

摘要翻译： 在MISTY1FF功能中，输入循环密钥KIij2的异或被布置在第一MISTY结构中的9位关键路径上的异或或连接到7的分支点的零扩展转换 右边的系统数据路径。 然后，9位循环密钥KIij1被截断转换为7位，通过异或来计算7位和循环密钥KIij1的异或，并将计算结果输入到排列在右系统上的异或 数据路径在第二阶段MISTY结构。

公开(公告)号：US20110007894A1

公开(公告)日：2011-01-13

申请号：US12886051

申请日：2010-09-20

申请人： Masahiko TAKENAKA ,  Kouichi Itoh

发明人： Masahiko TAKENAKA ,  Kouichi Itoh

IPC分类号： H04L9/28

CPC分类号： G06F7/723 ,  G06F2207/7242 ,  H04L9/003 ,  H04L9/302 ,  H04L2209/127

摘要： 401 stores, in 302, key d′ obtained by subtracting random number 2r held in 201 from key d held in 105. When an operation starts, the values “−C” and “−C2” are calculated respectively, and the resultant values are stored in a multiplication table memory 205 together with value “C”. In a first operation cycle, 107 selects and outputs an intermediate value 108 held in an in-operation data register 103, and thereby makes a modular-multiplication operation circuit 104 perform squaring. In the second operation cycle, 107 selects and outputs one of three values held in 205 in accordance with the combination of key bit value d′i and random number bit value ri, and thereby makes the modular-multiplication operation circuit 104 perform multiplication. Thereby, a cryptographic processing device that requires a short operation time period, small circuit scale, and has sufficient security can be realized.

摘要翻译： 401在302中存储通过从保持在105中的密钥d减去在201中保留的随机数2r获得的密钥d'。当操作开始时，分别计算值“-C”和“-C2”，并且得到的值为 与值“C”一起存储在乘法表存储器205中。 在第一操作周期中，107选择并输出保持在工作数据寄存器103中的中间值108，从而使得乘法运算电路104进行平方。 在第二操作周期中，107根据密钥位值d i和随机数位值ri的组合来选择并输出保持在205中的三个值之一，从而使乘法运算电路104进行乘法运算。 因此，可以实现需要短操作时间段，小电路规模并且具有足够安全性的密码处理装置。

公开(公告)号：US20100278332A1

公开(公告)日：2010-11-04

申请号：US12834247

申请日：2010-07-12

申请人： Dai YAMAMOTO ,  Jun Yajima ,  Kouichi Itoh

发明人： Dai YAMAMOTO ,  Jun Yajima ,  Kouichi Itoh

IPC分类号： H04L9/28

CPC分类号： H04L9/0625 ,  H04L2209/122 ,  H04L2209/125 ,  H04L2209/20 ,  H04L2209/24

摘要： In a MISTY1 FI function, an exclusive OR to which a round key KIij2 is inputted is arranged between an exclusive OR arranged on a 9-bit critical path in a first MISTY structure and a zero-extend conversion connected to the branching point of a 7-bit right system data path. Then, a 9-bit round key KIij1 is truncate-converted to seven bits, the exclusive OR of the seven bits and the round key KIij1 is calculated by an exclusive OR and the calculation result is inputted to an exclusive OR arranged on the right system data path in the second stage MISTY structure.

摘要翻译： 在MISTY1FF功能中，输入循环密钥KIij2的异或被布置在第一MISTY结构中的9位关键路径上的异或或连接到7的分支点的零扩展转换 右边的系统数据路径。 然后，9位循环密钥KIij1被截断转换为7位，通过异或来计算七位和循环密钥KIij1的异或，并将计算结果输入到排列在右系统上的异或 数据路径在第二阶段MISTY结构。