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1. 发明授权

US06606385B1 Data encrypting/decrypting conversion methods and apparatuses and data communication system adopting the same 有权
标题翻译：数据加密/解密转换方法和装置以及数据通信系统采用
公开(公告)号：US06606385B1
公开(公告)日：2003-08-12
申请号：US09130529
申请日：1998-08-04
申请人： Makoto Aikawa , Kazuo Takaragi , Hiroyuki Koreeda , Manabu Sasamoto , Hiroo Okamoto , Takaharu Noguchi , Soichi Furuya , Shigeru Hirahata
发明人： Makoto Aikawa , Kazuo Takaragi , Hiroyuki Koreeda , Manabu Sasamoto , Hiroo Okamoto , Takaharu Noguchi , Soichi Furuya , Shigeru Hirahata
IPC分类号： H04K100
CPC分类号： H04L9/0625 , G10H2230/015 , H04L2209/08 , H04L2209/12 , H04L2209/601
摘要： Encrypting/decrypting conversion method and apparatus capable of controlling dynamically cyclic shift independent of data to undergo encrypting/decrypting conversion includes two or more different fixed circulating shift processing means for shifting cyclically the data by a fixed bit number leftward or rightward, a cyclic shift processing selecting means for selecting fixed cyclic shift processing means. The selecting sequence determined by the cyclic shift processing means is determined on the basis of data for determining the shift number selecting sequence.
摘要翻译：能够独立于数据进行加密/解密转换的动态循环移位的加密/解密转换方法和装置包括两个或多个不同的固定循环移位处理装置，用于将数据循环移位固定位数向左或向右循环移位处理选择装置，用于选择固定循环移位处理装置。由循环移位处理装置确定的选择序列是基于用于确定移动号码选择序列的数据来确定的。

2. 发明授权

US07359515B2 Method and apparatus for symmetric-key decryption 有权
标题翻译：用于对称密钥解密的方法和装置
公开(公告)号：US07359515B2
公开(公告)日：2008-04-15
申请号：US11602263
申请日：2006-11-21
申请人： Soichi Furuya , Kazuo Takaragi , Hiroyuki Kurumatani , Masashi Takahashi , Kunihiko Miyazaki , Hisayoshi Sato , Dai Watanabe
发明人： Soichi Furuya , Kazuo Takaragi , Hiroyuki Kurumatani , Masashi Takahashi , Kunihiko Miyazaki , Hisayoshi Sato , Dai Watanabe
IPC分类号： H04L9/00
CPC分类号： H04L9/0822 , H04L9/0625 , H04L9/0637 , H04L9/0662 , H04L9/3236 , H04L2209/125 , H04L2209/20 , H04L2209/38
摘要： A symmetric-key cryptographic technique capable of realizing both high-speed cryptographic processing having a high degree of parallelism, and alteration detection. The invention includes dividing plaintext composed of redundancy data and a message to generate plaintext blocks each having a predetermined length; generating a random number sequence based on a secret key, generating a random number block corresponding to one of the plaintext blocks from the random number sequence, outputting a feedback value obtained as a result of operation on the one plaintext block and the random number block, the feedback value being fed back for using the operation on another plaintext block, and performing an encryption operation using the one plaintext block, random number block, and feedback value.
摘要翻译：一种对称密钥加密技术，能够实现具有高度并行性和改变检测的高速密码处理。本发明包括划分由冗余数据组成的明文和消息，以产生每个具有预定长度的明文块; 基于秘密密钥生成随机数序列，从随机数序列生成与一个明文块相对应的随机数块，将作为操作结果获得的反馈值输出到一个明文块和随机数块上，对反馈值进行反馈以对另一明文块进行操作，并使用一个明文块，随机数块和反馈值进行加密操作。

3. 发明授权

US07280659B2 Pseudorandom number generating apparatus or encryption or decryption apparatus using the same 有权
标题翻译：伪随机数生成装置或使用其的加密或解密装置
公开(公告)号：US07280659B2
公开(公告)日：2007-10-09
申请号：US10124577
申请日：2002-04-18
申请人： Dai Watanabe , Soichi Furuya , Kazuo Takaragi
发明人： Dai Watanabe , Soichi Furuya , Kazuo Takaragi
IPC分类号： H04L9/00
CPC分类号： G06F7/582
摘要： In a buffer and a state included in a pseudorandom number generating apparatus, the state has the configuration of assuming that the unit length of data processing is n, the state has a size of 3×n bits, and the buffer has a capacity of 32×n bits, and according to clock control, a state transformation section (state transformation function) for conducting a state alteration from time t to time t+1 uses a nonlinear function F (having an n-bit input and an n-bit output) twice, or two different nonlinear functions F and G respectively once. The state transformation section has such a configuration that a nonlinear function such as a round function of a block cipher sufficiently evaluated as to the cryptographic security and implementation.
摘要翻译：在包括在伪随机数生成装置中的缓冲器和状态中，状态具有假设数据处理的单位长度为n，状态具有3×n位的大小，并且缓冲器具有32×n位的容量的配置，并且根据时钟控制，用于从时间t到时间t + 1进行状态改变的状态变换部分（状态变换函数）使用两次非线性函数F（具有n位输入和n位输出），或分别有两种不同的非线性函数F和G。状态变换部具有对加密安全性和实现充分评估的块密码的循环函数等非线性函数。

4. 发明授权

US07110545B2 Method and apparatus for symmetric-key encryption 有权
标题翻译：用于对称密钥加密的方法和装置
公开(公告)号：US07110545B2
公开(公告)日：2006-09-19
申请号：US09784254
申请日：2001-02-16
申请人： Soichi Furuya , Kazuo Takaragi , Hiroyuki Kurumatani , Masashi Takahashi , Kunihiko Miyazaki , Hisayoshi Sato , Dai Watanabe
发明人： Soichi Furuya , Kazuo Takaragi , Hiroyuki Kurumatani , Masashi Takahashi , Kunihiko Miyazaki , Hisayoshi Sato , Dai Watanabe
IPC分类号： H04L9/28
CPC分类号： H04L9/0822 , H04L9/0625 , H04L9/0637 , H04L9/0662 , H04L9/3236 , H04L2209/125 , H04L2209/20 , H04L2209/38
摘要： A symmetric-key cryptographic technique capable of realizing both high-speed cryptographic processing having a high degree of parallelism, and alteration detection. The invention includes dividing plaintext composed of redundancy data and a message to generate plaintext blocks each having a predetermined length, generating a random number sequence based on a secret key, generating a random number block corresponding to one of the plaintext blocks from the random number sequence, outputting a feedback value obtained as a result of operation on the one plaintext blocks and the random number block, the feedback value being fed back for using in the operation on another plaintext blocks, and performing an encryption operation using the one plaintext blocks, random number block, and feedback value.
摘要翻译：一种对称密钥加密技术，能够实现具有高度并行性和改变检测的高速密码处理。本发明包括划分由冗余数据组成的明文和消息，以产生每个具有预定长度的明文块，根据秘密密钥产生一个随机数序列，从随机数序列中产生一个对应于明文块的随机数块输出作为对一个明文块和随机数块的操作结果获得的反馈值，反馈值被反馈以在对另一个明文块的操作中使用，并且使用一个明文块进行加密操作，随机数字块和反馈值。

5. 发明授权

US07224796B2 Pseudorandom number generating apparatus or encryption or decryption apparatus using the same 有权
公开(公告)号：US07224796B2
公开(公告)日：2007-05-29
申请号：US10046167
申请日：2002-01-16
申请人： Dai Watanabe , Soichi Furuya , Kazuo Takaragi
发明人： Dai Watanabe , Soichi Furuya , Kazuo Takaragi
IPC分类号： H04L9/00
CPC分类号： G06F7/582
摘要： In a buffer and a state included in a pseudorandom number generating apparatus, the state has the configuration of assuming that the unit length of data processing is n, the state has a size of 3×n bits, and the buffer has a capacity of 32×n bits, and according to clock control, a state transformation section (state transformation function) for conducting a state alteration from time t to time t+1 uses a nonlinear function F (having an n-bit input and an n-bit output) twice, or two different nonlinear functions F and G respectively once. The state transformation section has such a configuration that a nonlinear function such as a round function of a block cipher sufficiently evaluated as to the cryptographic security and implementation.

6. 发明授权

US07200232B2 Method and apparatus for symmetric-key decryption 失效
标题翻译：用于对称密钥解密的方法和装置
公开(公告)号：US07200232B2
公开(公告)日：2007-04-03
申请号：US09818567
申请日：2001-03-28
申请人： Soichi Furuya , Kazuo Takaragi , Hiroyuki Kurumatani , Masashi Takahashi , Kunihiko Miyazaki , Hisayoshi Sato , Dai Watanabe
发明人： Soichi Furuya , Kazuo Takaragi , Hiroyuki Kurumatani , Masashi Takahashi , Kunihiko Miyazaki , Hisayoshi Sato , Dai Watanabe
IPC分类号： H04L9/28 , H04L9/06
CPC分类号： H04L9/0822 , H04L9/0625 , H04L9/0637 , H04L9/0662 , H04L9/3236 , H04L2209/125 , H04L2209/20 , H04L2209/38
摘要： A symmetric-key cryptographic technique capable of realizing both high-speed cryptographic processing having a high degree of parallelism, and alteration detection. The invention includes dividing plaintext composed of redundancy data and a message to generate plaintext blocks each having a predetermined length, generating a random number sequence based on a secret key, generating a random number block corresponding to one of the plaintext blocks from the random number sequence, outputting a feedback value obtained as a result of operation on the one plaintext block and the random number block, the feedback value being fed back for using in the operation on another plaintext block, and performing an encryption operation using the one plaintext block, random number block, and feedback value.
摘要翻译：一种对称密钥加密技术，能够实现具有高度并行性和改变检测的高速密码处理。本发明包括划分由冗余数据组成的明文和消息，以产生每个具有预定长度的明文块，根据秘密密钥产生一个随机数序列，从随机数序列中产生一个对应于明文块的随机数块输出作为对一个明文块和随机数块的操作结果获得的反馈值，反馈值被反馈以用于对另一个明文块的操作，并且使用一个明文块执行加密操作，随机数字块和反馈值。

7. 发明申请

US20070064944A1 Method and apparatus for symmetric-key decryption 有权
标题翻译：用于对称密钥解密的方法和装置
公开(公告)号：US20070064944A1
公开(公告)日：2007-03-22
申请号：US11602263
申请日：2006-11-21
申请人： Soichi Furuya , Kazuo Takaragi , Hiroyuki Kurumatani , Masashi Takahashi , Kunihiko Miyazaki , Hisayoshi Sato , Dai Watanabe
发明人： Soichi Furuya , Kazuo Takaragi , Hiroyuki Kurumatani , Masashi Takahashi , Kunihiko Miyazaki , Hisayoshi Sato , Dai Watanabe
IPC分类号： H04L9/00
CPC分类号： H04L9/0822 , H04L9/0625 , H04L9/0637 , H04L9/0662 , H04L9/3236 , H04L2209/125 , H04L2209/20 , H04L2209/38
摘要： A symmetric-key cryptographic technique capable of realizing both high-speed cryptographic processing having a high degree of parallelism, and alteration detection. The invention includes dividing plaintext composed of redundancy data and a message to generate plaintext blocks each having a predetermined length; generating a random number sequence based on a secret key, generating a random number block corresponding to one of the plaintext blocks from the random number sequence, outputting a feedback value obtained as a result of operation on the one plaintext block and the random number block, the feedback value being fed back for using the operation on another plaintext block, and performing an encryption operation using the one plaintext block, random number block, and feedback value.
摘要翻译：一种对称密钥加密技术，能够实现具有高度并行性和改变检测的高速密码处理。本发明包括划分由冗余数据组成的明文和消息，以产生每个具有预定长度的明文块; 基于秘密密钥生成随机数序列，从随机数序列生成与一个明文块相对应的随机数块，将作为操作结果获得的反馈值输出到一个明文块和随机数块上，对反馈值进行反馈以对另一明文块进行操作，并使用一个明文块，随机数块和反馈值进行加密操作。

8. 发明授权

US07177424B1 Cryptographic apparatus and method 失效
标题翻译：加密设备和方法
公开(公告)号：US07177424B1
公开(公告)日：2007-02-13
申请号：US09572790
申请日：2000-05-17
申请人： Soichi Furuya , Michael Roe
发明人： Soichi Furuya , Michael Roe
IPC分类号： H04L9/00
CPC分类号： H04L9/0618 , H04L9/0662 , H04L2209/601
摘要： An encryption system comprises a pseudo-random number generator (KS) for generating a long pseudo-random sequence (S) from a shorter encryption key (K) and, if necessary, a nonce value (N), and a mixing function (MX) for combining the sequence with a plaintext message (P) on a block-by-block basis, where successive blocks (S(i)) of 128 bits of the sequence are combined with successive 64-bit blocks of plaintext (P(i)) to produce successive 64-bit blocks of ciphertext. The blockwise use of a long pseudo-random sequence preserves the advantages of a block cipher in terms of data confidentiality and data integrity, as well as benefiting from the speed advantages of a stream cipher.
摘要翻译：加密系统包括伪随机数发生器（KS），用于从较短的加密密钥（K）生成长的伪随机序列（S），如果需要的话，产生随机数值（N）和混合函数（MX ），用于在逐块的基础上将序列与明文消息（P）组合，其中该序列的128位的连续块（S（i））与连续的64位明文块（P（i ））以产生连续的64位密文块。长时间伪随机序列的阻塞使用在数据机密性和数据完整性方面保留了分组密码的优点，并且从流密码的速度优势中受益。

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