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1. 发明授权

US06272225B1 Key recovery condition encryption and decryption apparatuses 失效
标题翻译：密钥恢复条件加解密装置
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。

2. 发明授权

US06266421B1 Key recovery system and key recovery method 失效
标题翻译：密钥恢复系统和密钥恢复方法
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。

3. 发明授权

US06185308B2 Key recovery system 失效
标题翻译：钥匙恢复系统
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。

4. 发明授权

US06169803A Encryption key processing system to be incorporated into data recovery system or key setting system for generating encryption key 失效
标题翻译：加密密钥处理系统将被并入数据恢复系统或密钥设置系统中，用于生成加密密钥
公开(公告)号：US06169803A
公开(公告)日：2001-01-02
申请号：US09013223
申请日：1998-01-26
申请人： Kazue Sako , Hiroshi Miyauchi
发明人： Kazue Sako , Hiroshi Miyauchi
IPC分类号： H04L902
CPC分类号： G06Q20/20 , H04L9/0869 , H04L9/0894
摘要： An encryption key processing system includes a user terminal system which uses a key and a sub-system for holding information regarding the user terminal system, the sub-system generating predetermined public information, secret information corresponding to the public information and a secret key dependent on an identifier of said user terminal system, sending a secret key to the user terminal system in secret and the user terminal system generating and using a key and necessary information based on a secret key and public information received from the sub-system.
摘要翻译：加密密钥处理系统包括使用密钥和子系统的用户终端系统，用于保存关于用户终端系统的信息，生成预定公开信息的子系统，对应于公共信息的秘密信息和依赖于所述用户终端系统的标识符，秘密地向用户终端系统发送密钥，以及基于秘密密钥生成和使用密钥的必要信息以及从子系统接收的公共信息的用户终端系统。

5. 发明授权

US07694880B2 Anonymous electronic voting system and anonymous electronic voting method 失效
标题翻译：匿名电子投票系统和匿名电子投票法
公开(公告)号：US07694880B2
公开(公告)日：2010-04-13
申请号：US10587665
申请日：2005-01-18
申请人： Kengo Mori , Kazue Sako
发明人： Kengo Mori , Kazue Sako
IPC分类号： G06F17/60
CPC分类号： G07C13/00
摘要： A voting server transmits a list of plaintext and encrypted voting data obtained by encrypting the plaintext to a voter terminal, and the voter terminal a selected encrypted candidate name corresponding to the plaintext elected by the voter to an encryption server. The encryption server returns encrypted voting data obtained by re-encrypting the encrypted candidate name to the voter terminal, and the voter terminal transmits the encrypted voting data received from the encryption server for voting. Decryption of the encrypted voting data is performed by an anonymous decryption system. The voter terminal certifies the voter to an authentication server, and affixes a digital signature to the encrypted voting data based on a common-key authentication base, transmitting the same to the voting server.
摘要翻译：投票服务器将通过将明文加密获得的明文和加密投票数据的列表发送给选举人终端，并且选民终端将与选民所选择的明文相对应的选择的加密候选名称发送给加密服务器。加密服务器返回通过将加密的候选名称重新加密到选民终端获得的加密投票数据，并且选举终端发送从加密服务器接收的加密投票数据进行投票。加密的投票数据的解密由匿名解密系统执行。选民终端向认证服务器证明投票人，并根据共同密钥认证基础将数字签名附加到加密的投票数据，并将其发送给投票服务器。

6. 发明申请

US20090089575A1 Service Providing System, Outsourcer Apparatus, Service Providing Method, and Program 审中-公开
标题翻译：服务提供系统，外包设备，服务提供方法和程序
公开(公告)号：US20090089575A1
公开(公告)日：2009-04-02
申请号：US11922431
申请日：2006-05-31
申请人： Shoko Yonezawa , Kazue Sako
发明人： Shoko Yonezawa , Kazue Sako
IPC分类号： H04L9/32 , H04L9/06
CPC分类号： G06Q10/06 , H04L9/3255
摘要： When an entrustor entrusts an outsourcer with the supply of a service for members, member information managed by the entrustor is kept secret from the outsourcer, and users can receive the service without communicating with the entrustor. For using the service, user apparatus 3 sends group signature data to outsourcer apparatus 2. Outsourcer apparatus 2 authenticates the group signature data using public information of entrustor apparatus 1. When the group signature data passes the authentication, confirming that user apparatus 3 is a member of entrustor apparatus 1, outsourcer apparatus 2 provides the service to user apparatus 3.
摘要翻译：委托人委托外包人为会员提供服务时，由委托人管理的会员信息不受外包商秘密的影响，用户可以在不与委托人沟通的情况下接收服务。为了使用该服务，用户装置3向外包装置2发送群签名数据。外包装置2使用委托装置1的公开信息对组签名数据进行认证。当签名数据通过认证时，确认用户装置3为成员委托设备1，外包设备2向用户设备3提供服务。

7. 发明申请

US20080091941A1 Group Signature System, Member Status Judging Device, Group Signature Method And Member Status Judging Program 审中-公开
标题翻译：团体签名系统，会员状态判断设备，团体签名方式和会员状态判断程序
公开(公告)号：US20080091941A1
公开(公告)日：2008-04-17
申请号：US11661138
申请日：2005-08-11
申请人： Shoko Yonezawa , Kazue Sako
发明人： Shoko Yonezawa , Kazue Sako
IPC分类号： H04L9/32 , G06F17/00
CPC分类号： H04L9/3255 , H04L2209/42
摘要： For group signature data capable of keeping anonymity, it is possible to efficiently determine whether the user having created the group signature data is a valid member of the group. When a message and group signature data are received, the verification unit 3 authenticates the data and inquires, of the member status response unit 4, whether the user of the signature unit 2 having created the group signature data is a valid member of the group. In response to the inquiry, the response unit 4 determines the member status of the user having created the group signature data, according to a member revocation list notified from the group management unit 1. The response unit 4 then transmits a judge result of the member status to the verification unit 3.
摘要翻译：对于能够保持匿名性的组签名数据，可以有效地确定创建组签名数据的用户是否是该组的有效成员。当接收到消息和组签名数据时，验证单元3对成员状态响应单元4的数据进行认证并查询已经创建组签名数据的签名单元2的用户是否是该组的有效成员。响应于该查询，响应单元4根据从组管理单元1通知的成员撤销列表，确定已经创建了组签名数据的用户的成员状态。响应单元4然后将会员状态的判断结果发送给验证单元3。

8. 发明授权

US07117368B2 Anonymous participation authority management system 有权
标题翻译：匿名参与权限管理系统
公开(公告)号：US07117368B2
公开(公告)日：2006-10-03
申请号：US09765390
申请日：2001-01-22
申请人： Kazue Sako
发明人： Kazue Sako
IPC分类号： H04L9/00
CPC分类号： H04L9/3257 , G06Q20/383 , H04L9/302 , H04L9/3255 , H04L2209/42 , H04L2209/463
摘要： A system allowing a participant to participate anonymously in a plurality of sessions but to be detected that the same participant has participated more than once in the same session is disclosed. The participant authorizes individual data using secret information depending on session-related information. The reception subsystem determines whether received data is anonymous participation data authorized by the participant subsystem and further determines whether anonymous signatures of arbitrary two pieces of anonymous participation data are signed by an identical participant subsystem. The anonymous signature may include data generated by raising a session-dependent base to a power dependent on the secret information.
摘要翻译：公开了允许参与者在多个会话中匿名参与但被检测到的同一参与者在同一会话中多次参与的系统。参与者根据会话相关信息授权使用秘密信息的个人数据。接收子系统确定接收到的数据是否是参与者子系统授权的匿名参与数据，并进一步确定任意两个匿名参与数据的匿名签名是否由相同的参与子系统签名。匿名签名可以包括通过将依赖于会话的基础提升到取决于秘密信息的幂的数据。

9. 发明授权

US10797867B2 System and method for electronic bidding 有权
公开(公告)号：US10797867B2
公开(公告)日：2020-10-06
申请号：US12085923
申请日：2006-11-29
申请人： Toshiyuki Isshiki , Kazue Sako
发明人： Toshiyuki Isshiki , Kazue Sako
IPC分类号： H04L9/08 , G06Q30/08 , H04L9/30 , G06Q20/38
摘要： In an electronic bidding system and method, it is unnecessary to disclose to bidders a list of public keys matched to bid prices, and in which price secrecy may be proved. In a function of encryption of a bidding device 300, a public key is generated using a bid price and an IBE public key, based on an ID-Based Encryption (IBE) system having a bid value as an ID. IBE public key is obtained on combining a plurality of partial public keys matched to partial secret keys generated by a plural number of partial bid opening devices based on a combination condition enabling group decryption. A preset message for bidding is then encrypted. In a function of decryption of a bid opening device 400, a number of partial bid opening devices, which is in keeping with a satisfying number of the group decryption, perform calculations for decryption for winning bid value candidates, beginning from such candidate, the allowable bid value closest to the bid closing condition. Decrypted data obtained on combining the resulting output partial bid opening data are collated to the message for bidding to decide on winning bid value.

10. 发明授权

US08223973B2 Mix-net system 有权
标题翻译：混合网络系统
公开(公告)号：US08223973B2
公开(公告)日：2012-07-17
申请号：US12684192
申请日：2010-01-08
申请人： Jun Furukawa , Kazue Sako
发明人： Jun Furukawa , Kazue Sako
IPC分类号： H04L9/00
CPC分类号： H04L9/14 , H04L9/0825 , H04L9/3066 , H04L9/3218 , H04L9/3236 , H04L2209/463
摘要： Each participant apparatus (103) encrypts a plaintext by using a secret key of secret key cryptography, encrypts the encryption key by a public key, and sends the plaintext and public key to a substitution/decryption apparatus (112). With this processing, the limitation on the length of a ciphertext to be processed can be eliminated. In this invention, a verifiable proof text using a public key by each substitution/decryption apparatus is verified by a verification apparatus (109) by using the public key. If one of a plurality of organizations to decrypt and shuffle ciphertexts has not correctly executed the operation, a third party can specify it and prove that the specified organization is unauthorized.
摘要翻译：每个参与者装置（103）通过使用秘密密钥密码术的秘密密钥加密明文，通过公钥加密加密密钥，并将明文和公钥发送到替换/解密装置（112）。通过该处理，可以消除对要处理的密文的长度的限制。在本发明中，由验证装置（109）通过使用公开密钥对每个替换/解密装置使用公开密钥的可验证证明文本进行验证。如果解密和解密密文的多个组织中的一个没有正确地执行该操作，则第三方可以指定它并且证明指定的组织是未授权的。

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