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    • 2. 发明授权
    • Pseudorandom number generator and encryption device using the same
    • 伪随机数发生器和加密装置使用相同
    • US08122075B2
    • 2012-02-21
    • US11947911
    • 2007-11-30
    • Dai WatanabeHirotaka Yoshida
    • Dai WatanabeHirotaka Yoshida
    • G06F1/02
    • G06F7/582H04L9/0668H04L2209/12H04L2209/60
    • A pseudorandom number generator reduced in size while maintaining high security is disclosed. The generator has a state storage unit of 2 blocks (n bits per block) and a buffer of plurality of blocks, and mixes their contents to obtain a random number sequence. The mixing is done by a nonlinear transformation unit for inputting the stored content of the buffer to output data of the same size as the input data, a first linear transformation unit for inputting the content of the state storage unit and the output of the nonlinear transformation unit to store an output into the state storage unit, and a second linear transformation unit for inputting the stored content of the buffer and the stored content of the state storage unit to store an output into the buffer. The mixed content of the state storage unit is output as a random number sequence.
    • 公开了一种在保持高安全性的同时缩小尺寸的伪随机数发生器。 发生器具有2个块(每块n位)和多个块的缓冲器的状态存储单元,并且混合其内容以获得随机数序列。 通过非线性变换单元完成混合,用于输入缓冲器的存储内容以输出与输入数据相同尺寸的数据,用于输入状态存储单元的内容的第一线性变换单元和非线性变换的输出 单元,用于将输出存储到状态存储单元中;第二线性变换单元,用于输入缓存器的存储内容和状态存储单元的存储内容,以将输出存储到缓冲器中。 状态存储单元的混合内容作为随机数序列输出。
    • 5. 发明申请
    • PSEUDORANDOM NUMBER GENERATOR AND ENCRYTION DEVICE USING THE SAME
    • PSEUDORANDOM数字发生器和使用它的加密设备
    • US20080243977A1
    • 2008-10-02
    • US11947911
    • 2007-11-30
    • Dai WatanabeHirotaka Yoshida
    • Dai WatanabeHirotaka Yoshida
    • G06F7/58H04L9/06G06F17/14
    • G06F7/582H04L9/0668H04L2209/12H04L2209/60
    • A pseudorandom number generator reduced in size while maintaining high security is disclosed. The generator has a state storage unit of 2 blocks (n bits per block) and a buffer of plurality of blocks, and mixes their contents to obtain a random number sequence. The mixing is done by a nonlinear transformation unit for inputting the stored content of the buffer to output data of the same size as the input data, a first linear transformation unit for inputting the content of the state storage unit and the output of the nonlinear transformation unit to store an output into the state storage unit, and a second linear transformation unit for inputting the stored content of the buffer and the stored content of the state storage unit to store an output into the buffer. The mixed content of the state storage unit is output as a random number sequence.
    • 公开了一种在保持高安全性的同时缩小尺寸的伪随机数发生器。 发生器具有2个块(每块n位)和多个块的缓冲器的状态存储单元,并且混合其内容以获得随机数序列。 通过非线性变换单元完成混合,用于输入缓冲器的存储内容以输出与输入数据相同尺寸的数据,用于输入状态存储单元的内容的第一线性变换单元和非线性变换的输出 单元,用于将输出存储到状态存储单元中;第二线性变换单元,用于输入缓存器的存储内容和状态存储单元的存储内容,以将输出存储到缓冲器中。 状态存储单元的混合内容作为随机数序列输出。
    • 6. 发明授权
    • Lamp reflector and reflector
    • 灯反射器和反射器
    • US06906863B2
    • 2005-06-14
    • US10128419
    • 2002-04-24
    • Hirotaka YoshidaShin FukudaHiroshi Ishikawa
    • Hirotaka YoshidaShin FukudaHiroshi Ishikawa
    • B32B15/08F21V7/22G02B1/10F21V9/00
    • F21V7/22F21S41/37
    • An object of the invention is to provide a reflective sheet that uses silver which exhibits a high reflectance as a reflective layer and is excellent in light resistance and wet heat durability, as well as a lamp reflector that uses the sheet and does not generate a luminescent line. The reflective sheet constituted by sequentially arranging at least three layers, that is, an underlying layer, a metal layer made primarily of silver and a protective layer on a polymer film is laminated with a molded body by using an adhesive, allowing a polymer film side of the reflective sheet to be a surface to be adhered, to prepare a reflector. The resultant reflector is processed to prepare a lamp reflector.
    • 本发明的目的是提供一种反射片,其使用具有高反射率的银作为反射层,并且具有优异的耐光性和耐热热耐久性,以及使用该片材并且不产生发光的灯反射器 线。 通过使用粘合剂将通过依次布置至少三层构成的反射片与主要由银和保护层形成的金属层在基板上层叠,使聚合物膜侧 的反射片作为要粘附的表面,以制备反射器。 处理所得到的反射体以制备灯反射器。
    • 10. 发明申请
    • DEVICE, PROGRAM AND METHOD FOR GENERATING HASH VALUES
    • 用于生成哈希值的设备,程序和方法
    • US20100040226A1
    • 2010-02-18
    • US12393227
    • 2009-02-26
    • Kota IDEGUCHIHirotaka YOSHIDAToru OWADA
    • Kota IDEGUCHIHirotaka YOSHIDAToru OWADA
    • H04L9/00H04K1/00
    • H04L9/0643H04L2209/12H04L2209/20H04L2209/24
    • The invention aims to provide a hash function whose safety can be evaluated. To achieve this, a message that is input to a message blocking unit 122 is split into multiple message blocks, and shuffled at a shuffling unit 126 using block ciphers per message block from a round key generated at a first round-key generation unit 124 or a second round-key generation unit 125 using a round constant generated at a round-constant generation unit 123. In calculation of the block cipher, particular split data among multiple split data obtained by splitting the blocks are transformed with an F function, and an exclusive disjunction of the transformed data with other particular data is calculated. Using the F function, a transformation including at least a nonlinear transformation is performed more than once.
    • 本发明旨在提供可以评估其安全性的散列函数。 为了实现这一点,输入到消息阻塞单元122的消息被分割成多个消息块,并且在混洗单元126中使用来自在第一循环密钥生成单元124处生成的循环密钥的每个消息块的块密码进行混洗,或者 第二轮密钥生成部125,使用在常数生成部123生成的圆常数。在块密码的计算中,通过F分割对通过分割块获得的多个分割数据中的特定分割数据进行变换, 计算转换数据与其他特定数据的独占分离。 使用F函数,进行至少非线性变换的变换不止一次。