公开(公告)号：EP0891054A2

公开(公告)日：1999-01-13

申请号：EP98112482.9

申请日：1998-07-06

申请人： Hitachi, Ltd. ,  NEC CORPORATION ,  FUJITSU LIMITED

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

IPC分类号： H04L9/08

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 消息（通过用公共密钥KRCpub通过加密公共密钥KS获得的加密消息）和与检查单元12a，12b分开设置的密钥恢复控制单元14和 使用与公钥KRCpub配对的专用密钥KRCpri解密加密的消息，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：EP0891053B1

公开(公告)日：2004-10-06

申请号：EP98112477.9

申请日：1998-07-06

申请人： NEC CORPORATION ,  Hitachi, Ltd. ,  FUJITSU LIMITED

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

IPC分类号： H04L9/08 ,  G06F1/00

CPC分类号： H04L9/0643 ,  H04L9/0894

公开(公告)号：EP0891053A2

公开(公告)日：1999-01-13

申请号：EP98112477.9

申请日：1998-07-06

申请人： NEC CORPORATION ,  HITACHI, LTD. ,  FUJITSU LIMITED

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

IPC分类号： H04L9/08

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 encrytion 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。 哈希单元使用作为执行密钥恢复所必需的信息的密钥恢复信息文本，基于散列函数来计算哈希值。 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：EP0891053A3

公开(公告)日：2003-03-19

申请号：EP98112477.9

申请日：1998-07-06

申请人： NEC CORPORATION ,  Hitachi, Ltd. ,  FUJITSU LIMITED

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

IPC分类号： H04L9/08 ,  G06F1/00

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 encrytion 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.

公开(公告)号：EP0891054A3

公开(公告)日：2003-01-15

申请号：EP98112482.9

申请日：1998-07-06

申请人： Hitachi, Ltd. ,  NEC CORPORATION ,  FUJITSU LIMITED

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

IPC分类号： H04L9/08

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.

公开(公告)号：EP1011222A2

公开(公告)日：2000-06-21

申请号：EP99304647.3

申请日：1999-06-15

申请人： FUJITSU LIMITED

发明人： Kamada, Jun ,  Noda, Bintatsu ,  Ono, Etsuo ,  Kuroda, Yasutsugu ,  Iwase, Shoko

IPC分类号： H04L9/08

CPC分类号： H04L9/0833 ,  H04L9/0841 ,  H04L2209/60

摘要： A storage apparatus includes a key management unit (12) for managing an individual key unique to the apparatus and a common key shared with other storage apparatuses, and an encryption unit (13) for performing an encrypting process or verifying data for performing the encrypting process on electronic data stored in the apparatus to which the unit belongs using the individual key, and performing the encrypting process or verifying the data on the electronic data transmitted to or received from another apparatus using the common key. Thus, the apparatus communicates data using an applicable common key in a local environment and a global environment, appropriately manages a key in each environment, and guarantees the security of the electronic data.

摘要翻译： 一种存储装置，包括：用于执行在加密处理或用于执行加密处理验证数据从个人键特有的装置，并与其他存储设备共享的公共密钥，以及加密单元（13）的管理的密钥管理单元（12） 存储在该装置的电子数据以哪个单元属于利用专用密钥，并执行加密处理或验证对所述电子数据反式mitted或从使用共用密钥的另一装置接收到的数据。 因此，该装置使用在本地环境适用的公共密钥和一个全球性的环境进行数据通信，适当地管理在每个环境的关键，并保证电子数据的安全性。

公开(公告)号：EP1772987A2

公开(公告)日：2007-04-11

申请号：EP06024026.4

申请日：2000-08-18

申请人： FUJITSU LIMITED

发明人： Kuroda, Yasutsugu ,  Yoshioka, Takashi ,  Ono, Etsuo

IPC分类号： H04L9/32 ,  G06F1/00

CPC分类号： G06Q10/10 ,  H04L9/3247 ,  Y10S707/99931 ,  Y10S707/99932 ,  Y10S707/99939

摘要： A management device for ensuring the authenticity of electronic documents. The management device generates a series of instances of corresponding original data information depending on a change in a time series of the electronic information, and manages the series of the instances as one original data sequence. The assignment device assigns original data sequence identification information to the original data sequence. The issue device issues registration certificate information which contains the original data sequence identification information, and is used for access to an instance in a series of instances.

摘要翻译： 一种确保电子文件真实性的管理装置。 管理装置根据电子信息的时间序列的变化生成对应的原始数据信息的一系列实例，并且将这些实例的一系列管理为一个原始数据序列。 分配装置将原始数据序列识别信息分配给原始数据序列。 问题设备发布包含原始数据序列识别信息的注册证书信息，并且用于访问一系列实例中的实例。

公开(公告)号：EP0996054A3

公开(公告)日：2004-12-08

申请号：EP99307926.8

申请日：1999-10-07

申请人： FUJITSU LIMITED

发明人： Kamada, Jun ,  Ono, Etsuo ,  Kuroda, Yasutsugu

IPC分类号： G06F3/06

CPC分类号： G06F3/061 ,  G06F3/0643 ,  G06F3/0676 ,  G06F12/08 ,  G11B27/002 ,  G11B27/105 ,  G11B27/329 ,  Y10S707/99953

摘要： An information storage device (10,30) in which a plurality of storage media (12,18a,18b,41a,41b) having different accessibility is provided with a unit (3-1,3-2,3-3) for controlling the retrieval of a portable storage medium (e.g. 18a) which can be retrieved from the information storage device (10,30) by selecting, at a request to retrieve the portable storage medium, the storage medium either storing the body of a file and the data for use in accessing the file or storing only the body of the file. The information storage device (10,30) stores in and moves to a storage medium at an appropriate level the data for use in accessing a file depending on the situation.

摘要翻译： 一种信息存储装置（10,30），其中具有不同可访问性的多个存储介质（12,18a，18b，41a，41b）设置有用于控制的单元（3-1,3-2,3-3） 通过在请求检索便携式存储介质的情况下选择存储文件的主体的存储介质，以及可以从信息存储设备（10,30）检索的便携式存储介质（例如，18a） 用于访问文件或仅存储文件正文的数据。 信息存储装置（10,30）根据情况以适当的水平存储和存储用于访问文件的数据的存储介质。

公开(公告)号：EP0996054A2

公开(公告)日：2000-04-26

申请号：EP99307926.8

申请日：1999-10-07

申请人： FUJITSU LIMITED

发明人： Kamada, Jun ,  Ono, Etsuo ,  Kuroda, Yasutsugu

IPC分类号： G06F3/06

CPC分类号： G06F3/061 ,  G06F3/0643 ,  G06F3/0676 ,  G06F12/08 ,  G11B27/002 ,  G11B27/105 ,  G11B27/329 ,  Y10S707/99953

摘要： An information storage device (10,30) in which a plurality of storage media (12,18a,18b,41a,41b) having different accessibility is provided with a unit (3-1,3-2,3-3) for controlling the retrieval of a portable storage medium (e.g. 18a) which can be retrieved from the information storage device (10,30) by selecting, at a request to retrieve the portable storage medium, the storage medium either storing the body of a file and the data for use in accessing the file or storing only the body of the file. The information storage device (10,30) stores in and moves to a storage medium at an appropriate level the data for use in accessing a file depending on the situation.

公开(公告)号：EP1772987A3

公开(公告)日：2015-01-21

申请号：EP06024026.4

申请日：2000-08-18

申请人： FUJITSU LIMITED

发明人： Kuroda, Yasutsugu ,  Yoshioka, Takashi ,  Ono, Etsuo

IPC分类号： H04L9/32 ,  G06F1/00 ,  G06Q10/10

CPC分类号： G06Q10/10 ,  H04L9/3247 ,  Y10S707/99931 ,  Y10S707/99932 ,  Y10S707/99939

摘要： A management device for ensuring the authenticity of electronic documents. The management device generates a series of instances of corresponding original data information depending on a change in a time series of the electronic information, and manages the series of the instances as one original data sequence. The assignment device assigns original data sequence identification information to the original data sequence. The issue device issues registration certificate information which contains the original data sequence identification information, and is used for access to an instance in a series of instances.