公开(公告)号：US06272225B1

公开(公告)日：2001-08-07

申请号：US09110392

申请日：1998-07-07

申请人： Hiroshi Miyauchi ,  Kazue Sako ,  Masashi Yamazaki ,  Seiichi Domyo ,  Hiroyoshi Tsuchiya ,  Seiko Kanno ,  Ichirou Morita ,  Naoya Torii ,  Hiroyuki Ando ,  Yasutsugu Kuroda

发明人： Hiroshi Miyauchi ,  Kazue Sako ,  Masashi Yamazaki ,  Seiichi Domyo ,  Hiroyoshi Tsuchiya ,  Seiko Kanno ,  Ichirou Morita ,  Naoya Torii ,  Hiroyuki Ando ,  Yasutsugu Kuroda

IPC分类号： H04L932

CPC分类号： H04L9/0643 ,  H04L9/0894

摘要： A key recovery condition encryption apparatus includes a hashing unit, a first concatenating unit, and a condition information encryption unit. The hashing unit calculates a hash value on the basis of a hash function using a key recovery information text serving as information necessary for performing key recovery. The first concatenating unit concatenates the hash value from the hashing unit to the key recovery condition. The condition information encryption unit encrypts a concatenating result from the first concatenating unit by using a first encryption key. Also is disclosed a key recovery condition decryption apparatus for decrypting the encrypted data from the above encryption apparatus.

摘要翻译： 密钥恢复条件加密装置包括散列单元，第一连接单元和条件信息加密单元。 哈希单元使用密钥恢复信息文本作为散列函数来计算散列值，作为执行密钥恢复所必需的信息。 第一级联单元将散列单元的哈希值连接到密钥恢复条件。 条件信息加密单元通过使用第一加密密钥来加密来自第一连接单元的连接结果。 还公开了一种用于从上述加密装置解密加密数据的密钥恢复条件解密装置。

公开(公告)号：US06266421B1

公开(公告)日：2001-07-24

申请号：US09111281

申请日：1998-07-07

申请人： Seiichi Domyo ,  Hiroyoshi Tsuchiya ,  Seiko Kanno ,  Hiroyuki Ando ,  Ichirou Morita ,  Yasutsugu Kuroda ,  Naoya Torii ,  Hiroshi Miyauchi ,  Kazue Sako ,  Masashi Yamazaki

发明人： Seiichi Domyo ,  Hiroyoshi Tsuchiya ,  Seiko Kanno ,  Hiroyuki Ando ,  Ichirou Morita ,  Yasutsugu Kuroda ,  Naoya Torii ,  Hiroshi Miyauchi ,  Kazue Sako ,  Masashi Yamazaki

IPC分类号： H04L900

CPC分类号： H04L9/0894

摘要： The present invention has an object to overcome problems of a key recovery system using a conventional KRF system and to achieve efficient operation of the overall key recovery system. A key recovery system of the present invention includes check units 12a, 12b for checking whether a user has a recovery authorization for a common key KS, on the basis of a recovery condition RC specified by a recovery condition index RCI which is added to an encrypted message (encrypted message obtained by encrypting the common key KS with a public key KRCpub) supplied from a terminal (10a to 10d) of the user concerned, and a key recovery control unit 14 which is provided separately from the check units 12a, 12b and decrypts the encrypted message with a private key KRCpri paired with the public key KRCpub to recover the common key. The check unit 12a, 12b supplies the common key KS recovered in the key recovery control unit 14 to the user concerned only when the user has the recovery authorization.

摘要翻译： 本发明的目的是克服使用常规KRF系统的密钥恢复系统的问题并实现整体密钥恢复系统的有效操作。 本发明的密钥恢复系统包括基于由恢复条件索引RCI指定的恢复条件RC来检查用户是否具有用于公共密钥KS的恢复授权的检查单元12a，12b，其被添加到加密的 从相关用户的终端（10a〜10d）提供的消息（通过用公钥KRCpub加密公共密钥KS而获得的加密消息）以及与检查单元12a，12b分开设置的密钥恢复控制单元14以及 使用与公钥KRCpub配对的私钥KRCpri解密加密消息，以恢复公用密钥。 检查单元12a，12b仅在用户具有恢复授权时将恢复在密钥恢复控制单元14中的公用密钥KS提供给用户。

公开(公告)号：US06185308B2

公开(公告)日：2001-02-06

申请号：US09048096

申请日：1998-03-26

申请人： Hiroyuki Ando ,  Ichir{overscore (o)}u M{overscore (o)}rita ,  Yasutsugu Kuroda ,  Naoya Torii ,  Masashi Yamazaki ,  Hiroshi Miyauchi ,  Kazue Sako ,  Seiichi Domyo ,  Hiroyoshi Tsuchiya ,  Seiko Kanno

发明人： Hiroyuki Ando ,  Ichir{overscore (o)}u M{overscore (o)}rita ,  Yasutsugu Kuroda ,  Naoya Torii ,  Masashi Yamazaki ,  Hiroshi Miyauchi ,  Kazue Sako ,  Seiichi Domyo ,  Hiroyoshi Tsuchiya ,  Seiko Kanno

IPC分类号： H04L900

CPC分类号： H04L9/3226 ,  H04L9/0897

摘要： A key recovery information distribution device is provided between a recoverer device and a key recovery device, recovers a data key for the recoverer device, and reduces the load of the recoverer device. Data is encrypted using the data key and stored with key recovery information. The recoverer device which decrypts the encrypted data distributes the key recovery information to key recovery devices through the key recovery information distribution device to recover key information. A recoverer is authenticated directly between the key recovery device and the recoverer device, and then the key information is transmitted to the recoverer device, and the recoverer device recovers the data key.

摘要翻译： 在恢复装置和密钥恢复装置之间提供密钥恢复信息分配装置，恢复用于恢复装置的数据密钥，并减少重新装置装置的负载。 使用数据密钥对数据进行加密，并与密钥恢复信息一起存储。 解密加密数据的恢复装置通过密钥恢复信息分配装置将密钥恢复信息分配给密钥恢复装置，以恢复密钥信息。 恢复器在密钥恢复装置和恢复装置之间直接认证，然后将密钥信息发送给恢复装置，恢复装置恢复数据密钥。

公开(公告)号：US6118874A

公开(公告)日：2000-09-12

申请号：US50066

申请日：1998-03-30

申请人： Eiji Okamoto ,  Masahiro Mambo ,  Seiichi Domyo ,  Hiroyoshi Tsuchiya ,  Tooru Kawai ,  Kazuo Takaragi ,  Naoya Torii ,  Takeshi Tanida

发明人： Eiji Okamoto ,  Masahiro Mambo ,  Seiichi Domyo ,  Hiroyoshi Tsuchiya ,  Tooru Kawai ,  Kazuo Takaragi ,  Naoya Torii ,  Takeshi Tanida

IPC分类号： G09C1/00 ,  H04L9/08 ,  H04L9/10 ,  H04L9/32

CPC分类号： H04L9/0894

摘要： When a secret is encrypted and stored, it is necessary to provide a countermeasure for the situation where a key is lost (key recovery system). In the present invention, a key recovery system for an enveloped data format in which a common key is used to encrypt a plaintext (secret) and a user's public key is used to encrypt the common key and attached to an encrypted text is provided. In the present invention, only the common key is decrypted to recover the secret without reconstruction of split secret keys kept in a plurality of key storage apparatuses.

摘要翻译： 当秘密被加密和存储时，有必要为密钥丢失的情况（密钥恢复系统）提供对策。 在本发明中，提供了一种使用公用密钥加密明文（秘密）和用户公钥的包络数据格式的密钥恢复系统，用于加密公用密钥并附加到加密文本。 在本发明中，只有公用密钥被解密才能恢复密码，而不需要重新保存在多个密钥存储设备中的分离密钥。

公开(公告)号：US5559984A

公开(公告)日：1996-09-24

申请号：US313844

申请日：1994-09-28

申请人： Hirohiko Nakano ,  Seiichi Domyo ,  Takaki Kuroda ,  Naofumi Shouji ,  Atsushi Kobayashi

发明人： Hirohiko Nakano ,  Seiichi Domyo ,  Takaki Kuroda ,  Naofumi Shouji ,  Atsushi Kobayashi

IPC分类号： G06F12/00 ,  G06F12/08 ,  G06F12/12 ,  G06F13/00 ,  G06F12/02 ,  G06F15/177

CPC分类号： G06F12/122 ,  G06F12/0866 ,  Y10S707/99932

摘要： A distributed file system in which the cache hit ratio of a client is enhanced to speed up a file access for each of users logging into the client. A file server includes an access frequency database in which the names of users are listed in association with the names of files that are frequently accessed by the individual users. Each client includes a log-in user table for entering the name of a user who is logging in, and a cache priority control module. The cache priority control module sets priority levels for the copies of the files stored in a cache area, on the basis of the contents of the access frequency database and the log-in user table. The set priority levels function as criteria when any of the file copies is to be expelled from the cache area. Owing to this construction, the copies of the files of high usage frequencies are preferentially kept in the cache area of the client for each user logging into this client, whereby the cache hit ratio can be enhanced to speed up the file access.

摘要翻译： 分发文件系统，其中客户端的高速缓存命中率被增强以加速登录到客户端的每个用户的文件访问。 文件服务器包括访问频率数据库，其中列出与用户个体经常访问的文件的名称相关联的用户名。 每个客户端包括用于输入正在登录的用户的名称的登录用户表和缓存优先级控制模块。 高速缓存优先级控制模块基于访问频率数据库和登录用户表的内容来设置存储在高速缓存区域中的文件的副本的优先级。 当任何文件副本将从高速缓存区域中排出时，设置的优先级级别将用作标准。 由于这种结构，对于登录到该客户端的每个用户，优先将高使用频率的文件的副本保存在客户端的高速缓存区域中，由此可以增强高速缓存命中率以加速文件访问。

公开(公告)号：US07149930B2

公开(公告)日：2006-12-12

申请号：US10284238

申请日：2002-10-31

申请人： Hitoshi Ogawa ,  Seiichi Domyo ,  Yukie Hiratsuka

发明人： Hitoshi Ogawa ,  Seiichi Domyo ,  Yukie Hiratsuka

IPC分类号： G06F11/00

CPC分类号： G11B20/1883 ,  G11B27/105 ,  G11B27/329 ,  G11B2020/1896 ,  G11B2220/20 ,  G11B2220/216

摘要： The present invention provides a disk unit suitable for recording and reproducing time-series continuous data such as AV data.When data received as data to be written into recording medium is audio and/or video data, (this data is called AV data hereinafter), address information 403c identifying a beginning sector of the recording medium in which the data has been written is registered in file control information 402. Also, it is determined whether or not the AV data is contiguous with AV data just before written. If it is contiguous, the beginning sector is not registered in control information storage means. Thus continuous data can be handled as one piece of data.

摘要翻译： 本发明提供了适用于记录和再现诸如AV数据的时间序列连续数据的盘单元。 当作为要写入记录介质的数据接收的数据是音频和/或视频数据时（该数据在下文中称为AV数据），登记了已经写入数据的记录介质的起始扇区的地址信息403c 在文件控制信息402中。 此外，在写入之前确定AV数据是否与AV数据相邻。 如果它是连续的，则开始扇区没有被登记在控制信息存储装置中。 因此，连续数据可以作为一个数据处理。

公开(公告)号：US07711714B2

公开(公告)日：2010-05-04

申请号：US11514161

申请日：2006-09-01

申请人： Kazuo Takaragi ,  Seiichi Domyo ,  Hiroshi Yoshiura

发明人： Kazuo Takaragi ,  Seiichi Domyo ,  Hiroshi Yoshiura

IPC分类号： G06F17/30

CPC分类号： G06F21/554 ,  G06F21/54 ,  H04L67/34 ,  Y10S707/952

摘要： A method and a device for managing a computer network, especially a technique for ensuring the security of a network. A computer network system in which computers are connected to each other through transmission lines, each computer stores the data which constitutes a moving type software exclusively used for security and transmitted together with a message when the computer transmits the message to another computer of the system, and executes the moving type software by using the stored data upon receiving a message from another computer.

摘要翻译： 一种用于管理计算机网络的方法和装置，特别是用于确保网络安全性的技术。 一种计算机网络系统，其中计算机通过传输线相互连接，每台计算机存储组成专门用于安全的移动型软件的数据，并在计算机将该消息发送到系统的另一计算机时与消息一起发送， 并且在从另一计算机接收到消息时通过使用所存储的数据来执行移动型软件。

公开(公告)号：US07139759B2

公开(公告)日：2006-11-21

申请号：US09897400

申请日：2001-07-03

申请人： Kazuo Takaragi ,  Seiichi Domyo ,  Hiroshi Yoshiura

发明人： Kazuo Takaragi ,  Seiichi Domyo ,  Hiroshi Yoshiura

IPC分类号： G06F17/30 ,  H04L9/00

CPC分类号： H04L63/123 ,  H04L63/1416 ,  H04L63/145 ,  H04L67/06

摘要： A method and a device for managing a computer network, especially a technique for ensuring the security of a network. A computer network system in which computers are connected to each other through transmission lines, each computer stores the data which constitutes a moving type software exclusively used for security and transmitted together with a message when the computer transmits the message to another computer of the system, and executes the moving type software by using the stored data upon receiving a message from another computer.

公开(公告)号：US5872530A

公开(公告)日：1999-02-16

申请号：US790063

申请日：1997-01-28

申请人： Seiichi Domyo ,  Hiroshi Yoshiura ,  Yoshiaki Hattori ,  Yutaka Otsu ,  Hiromasa Murakami

发明人： Seiichi Domyo ,  Hiroshi Yoshiura ,  Yoshiaki Hattori ,  Yutaka Otsu ,  Hiromasa Murakami

IPC分类号： H03M7/40 ,  G06F5/00 ,  H03M7/30 ,  H03M7/00

CPC分类号： H03M7/3088

摘要： In a data compression method using dictionaries, there are adopted a dynamic dictionary and a static dictionary to prevent the deterioration in the data compression ratio in the leading portion of the input data which cannot be efficiently compressed using the dynamic dictionary. Moreover, the configuration removes the disadvantage of the deterioration in the data compression ratio because character strings having a low appearance frequency occupy a large portion of the dictionary. Data to be compressed is inputted via an input unit to be decomposed into input bit strings 202. Using the input bit string as a retrieval key, a bit string retrieval is conducted through the static dictionary by a decision unit and a reference unit. According to a result from comparison between the input bit string and a bit string of the static dictionary and a result from the retrieval by a retrieving unit through the dynamic dictionary, whether or not the input bit string is to be registered to the dynamic dictionary is determined. For registration of the input bit string, an index is added thereto by a register unit before the registration. The input bit string or an index matching the string is outputted as compressed data.

摘要翻译： 在使用字典的数据压缩方法中，采用动态字典和静态字典，以防止使用动态字典无法有效压缩的输入数据的前导部分中的数据压缩比的恶化。 此外，由于具有低出现频率的字符串占据了字典的大部分，因此该配置消除了数据压缩率恶化的缺点。 要被压缩的数据经由输入单元输入以被分解为输入位串202.使用输入位串作为检索关键字，通过决定单元和参考单元通过静态字典进行位串检索。 根据输入比特串与静态词典的比特串之间的比较结果，以及通过动态词典由检索单元检索的结果，输入比特串是否要注册到动态词典是 决心。 为了注册输入位串，在注册之前，通过寄存器单元向其添加索引。 输入位串或匹配字符串的索引作为压缩数据输出。

公开(公告)号：US20130046944A1

公开(公告)日：2013-02-21

申请号：US13257677

申请日：2011-08-19

申请人： Seiichi Domyo ,  Taketoshi Sakuraba ,  Hidehisa Arikawa

发明人： Seiichi Domyo ,  Taketoshi Sakuraba ,  Hidehisa Arikawa

IPC分类号： G06F12/16

CPC分类号： G06F11/1453

摘要： Deduplicated backup data of a plurality of generations are aggregated and stored.A storage apparatus is connected via a network to a host system making a content write request and includes a storage unit providing one or more containers composed of a specified storage area, and a back up unit storing the content in the container in accordance with a backup request from the host system; and wherein the backup unit cuts out the content into one or more chunks, detects a duplicate chunk, which is a duplicate of a chunk stored in the container, from the cutout chunks, and additionally writes the chunk, other than the duplicate chunk, to the container where the duplicate chunk is stored.

摘要翻译： 聚合并存储多代的重复数据删除的备份数据。 存储装置经由网络连接到进行内容写入请求的主机系统，并且包括提供由指定存储区域组成的一个或多个容器的存储单元和根据备份存储该容器中的内容的备份单元 主机系统请求; 并且其中所述备份单元将所述内容切割成一个或多个块，从所述切出块检测重叠的与所述容器中存储的块的重复块，并且将所述块除了所述重复块之外还将所述块 存储重复块的容器。