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1. 发明专利

DE60313530T2 未知
公开(公告)号：DE60313530T2
公开(公告)日：2007-12-27
申请号：DE60313530
申请日：2003-06-10
申请人： HITACHI LTD
发明人： KAJI TADASHI , FUJISHIRO TAKAHIRO , KUMAGAI YOKO , HANE SHINGO , NAGANO HIROMI
IPC分类号： H04L9/08 , H04L9/32
摘要： If a CRL is cached for an increased speed of a certificate validation process, when a certification authority issues a CRL in an urgent situation, the accuracy of the certificate validation result cannot be secured because the cached CRL is not the latest one. This problem is solved as follows. When it issues a CRL, the certification authority sends a CRL issuance notification to certificate validation servers. The certificate validation servers that received the CRL issuance notification cache the latest CRL. Thus, the accuracy of the certificate validation result can be secured.

2. 发明专利

DE60313530D1 未知
公开(公告)号：DE60313530D1
公开(公告)日：2007-06-14
申请号：DE60313530
申请日：2003-06-10
申请人： HITACHI LTD
发明人： KAJI TADASHI , FUJISHIRO TAKAHIRO , KUMAGAI YOKO , HANE SHINGO , NAGANO HIROMI
IPC分类号： H04L9/08 , H04L9/32
摘要： If a CRL is cached for an increased speed of a certificate validation process, when a certification authority issues a CRL in an urgent situation, the accuracy of the certificate validation result cannot be secured because the cached CRL is not the latest one. This problem is solved as follows. When it issues a CRL, the certification authority sends a CRL issuance notification to certificate validation servers. The certificate validation servers that received the CRL issuance notification cache the latest CRL. Thus, the accuracy of the certificate validation result can be secured.

3. 发明专利

JP2009296676A Authentication base system having crl publishing information function 有权
标题翻译：具有CRL发布信息功能的认证基系统
公开(公告)号：JP2009296676A
公开(公告)日：2009-12-17
申请号：JP2009219905
申请日：2009-09-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KAJI TADASHI , FUJISHIRO TAKAHIRO , KUMAGAI YOKO , HANE SHINGO , NAGANO HIROMI
IPC分类号： H04L9/32 , H04L9/08
摘要： PROBLEM TO BE SOLVED: To solve the problem that the accuracy of the result of the effectiveness verification of a certificate cannot be guaranteed because a CRL, which is being cached, is not the latest when an authentication department quickly publishes the CRL when the CRL is cached for increasing the speed of the effectiveness-decision processing of the certificate. SOLUTION: When the CRL is published, a certificate verification server is informed of a CRL publication from the authentication department. Since the certificate verification server receiving a CRL-publication information caches the latest CRL, the accuracy of the result of the effectiveness verification of the certificate can be guaranteed. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了解决证书的有效性验证结果的准确性无法保证的问题，因为正在缓存的CRL不是最新的，当认证部门快速发布CRL时缓存CRL以提高证书的有效性 - 决策处理速度。
解决方案：当CRL发布时，从认证部门通知证书验证服务器的CRL出版物。由于接收到CRL发布信息的证书验证服务器缓存最新的CRL，因此可以保证证书的有效性验证的结果的准确性。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2004164147A Electronic application accepting system, its method, and program 有权
公开(公告)号：JP2004164147A
公开(公告)日：2004-06-10
申请号：JP2002327677
申请日：2002-11-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TOMITA TAMINORI , TOYOUCHI JUNICHI , NAGANO HIROMI , KISHIMOTO YOSHINORI
IPC分类号： G06F19/00 , G06Q10/00 , G06Q10/10 , G06Q50/00 , G06Q50/26 , G06F17/60
摘要： PROBLEM TO BE SOLVED: To improve the convenience of a user by further simplifying an application procedure, and to improve security and to improve convenience by saving any labor to preliminarily confirm application conditions by a user. SOLUTION: This electronic application accepting system is provided with a user DB202 for storing the information of users, an application DB 204 for storing the information of application procedures, an application menu creation processing part 205 for generating application codes by referring to the contents of the user DB 202 and the application DB 204, and for gathering them for each user, and for printing them in a list table format, an application code DB 206 for recording the application codes including relation between the information of the corresponding users and the information of applications and an application form generation processing part 207 for generating an application format in which the information of the user has been written according to the input of the application code. COPYRIGHT: (C)2004,JPO

5. 发明专利

JP2004072717A Authentication base system with notification function for issuance of crl 有权
公开(公告)号：JP2004072717A
公开(公告)日：2004-03-04
申请号：JP2003128549
申请日：2003-05-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KAJI TADASHI , FUJISHIRO TAKAHIRO , KUMAGAI YOKO , HANE SHINGO , NAGANO HIROMI
IPC分类号： H04L9/08 , H04L9/32
CPC分类号： H04L9/006 , H04L9/3268
摘要： PROBLEM TO BE SOLVED: To solve a problem that the accuracy of the certificate validation result of a certificate can not be secured because a cached CRL is not the latest one if the CRL is cached for an increased speed of a certificate validation process, when a certification authority issues the CRL in an urgent situation.
SOLUTION: When the CRL is issued, the certification authority sends a CRL issuance notification to certificate validation servers. The certificate validation servers that receives the CRL issuance notification cache the latest CRL. Thus, the accuracy of the certificate validation result can be secured.
COPYRIGHT: (C)2004,JPO

6. 发明专利

JP2002049590A ELECTRONIC AUTHENTICATION SYSTEM 失效
公开(公告)号：JP2002049590A
公开(公告)日：2002-02-15
申请号：JP2000242755
申请日：2000-08-04
申请人： HITACHI LTD
发明人： ISHII SHOICHI , NAGANO HIROMI , GOSHIMA HIROYASU , ONOZATO HIROYUKI , OSHIDA SHINSAKU
IPC分类号： G06F21/00 , G06F15/00 , G06F21/33 , G06Q50/00 , G06Q50/10 , G06Q50/26 , G09C1/00 , H04L9/32 , G06F17/60
摘要： PROBLEM TO BE SOLVED: To attain an electronic authentication service which ensures the contents of electronic data on an open network. SOLUTION: An enjoyer 110 of an authentication service transmits the authentication request electronic data 140 having a digital signature to an authentication center 100. The center 100 or an approver 120 judges the contents of the data 140 and gives the digital signature to the permitted data 140 via the center 100. Then the enjoyer 110 acquires the authenticated electronic data 141 which are produced at the center 100. Thus, the enjoyer 110 enjoys the authentication service to the electronic data from the approver 120 and the center 100.

7. 发明专利

JP2001022848A SYSTEM AND METHOD FOR PROVIDING HISTORICAL VALIDITY OF ELECTRONIC DOCUMENT 失效
公开(公告)号：JP2001022848A
公开(公告)日：2001-01-26
申请号：JP19418299
申请日：1999-07-08
申请人： HITACHI LTD
发明人： SENOO TORU , TOYODA HIDEKI , NAGANO HIROMI , SUZAKI SEIICHI
IPC分类号： G06F13/00 , G06F21/10 , G06Q50/00 , G06Q50/10 , G06Q50/26 , G09C1/00 , G06F17/60
摘要： PROBLEM TO BE SOLVED: To make provable the existence and contents of an electronic document without limitation even after the expiration of validity of an electronic certificate and to prove the existence and contents of that electronic document even when the original is not kept. SOLUTION: Client computers EE1, EE2 and EE3 keep an original ORG2 and a registration number NUM returned at the time of registering an electronic document DOC and directly apply for a proof while using the original ORG2 or indirectly apply for the proof while using the registration number NUM. The server computer of a notarial agency NA applies time information T1 and the signature of the notarial agency to the registered electronic document and preserves it in a preserving device DB as the original ORG. The notarial agency responds to the direct or indirect proof application with time information T2 and T3 at the time of proving, the signature of the notarial agency and a certification sentence.

8. 发明专利

JP2000099421A METHOD FOR CONFIRMING RECEPTION OF ELECTRONIC INFORMATION 失效
公开(公告)号：JP2000099421A
公开(公告)日：2000-04-07
申请号：JP26768298
申请日：1998-09-22
申请人： HITACHI LTD
发明人： SUZAKI SEIICHI , KAJI TADASHI , TOYODA HIDEKI , NAGANO HIROMI
IPC分类号： G06F13/00 , G09C1/00 , H04L12/54 , H04L12/58
摘要： PROBLEM TO BE SOLVED: To enable a first user to confirm that a second user receives electronic information when the electronic information is transmitted from the first user through a network to the second user. SOLUTION: A transmitter 210 generates the electronic information to be transmitted to a recipient 211 and transmits this electronic information and the destination of the recipient 211 to a distributor 212. The distributor 212 generates a cryptographic key at random, enciphers the received electronic information with this cryptographic key and generates a cryptographic sentence. Then, the cryptographic sentence is transmitted to the recipient 211. The recipient 211 generates a receipt showing the reception of the cryptographic sentence and returns the receipt to the distributor 212 later. The distributor 212 verifies the normality of the receipt and only when the receipt is confirmed normal, the cryptographic key is transmitted to the recipient 211. At the same time, the receipt is transmitted to the transmitter 210. The recipient 211 deciphers the cryptographic sentence with the received cryptographic key and restores the electronic information.

9. 发明专利

JPH10335642A SEMICONDUCTOR DEVICE 失效
公开(公告)号：JPH10335642A
公开(公告)日：1998-12-18
申请号：JP14742597
申请日：1997-06-05
申请人： HITACHI LTD , HITACHI TOBU SEMICONDUCTOR LTD , HITACHI MICROCOMPUTER SYST
发明人： MARUYAMA YASUO , NAKURA KENICHI , SATO TAKAHIRO , NAGANO HIROMI
IPC分类号： H01L29/78
摘要： PROBLEM TO BE SOLVED: To prevent increase of source wiring resistance which is caused by increase of length of stripes, by forming conductor layers which brings an electrode conductor layer in continuity with a source leading-out wiring connected with a source region, on a semiconductor substrate in the respective stripe parts. SOLUTION: A source leading-out wiring 10 connected with the source region 8 of an MISFET has a continuity with a substrate conductor layer 1, in a linkage part, through a connecting layer 12 formed in a semiconductor substrate. The substrate conductor layer 1 has a continuity with a source electrode 13 formed on the back of the substrate conductor layer 1 as a facing surface of the semiconductor substrate main surface, and an electrode conductor layer is constituted of the source electrode 13 and the substrate conductor layer 1. The source leading-out wiring 10 and the substrate conductor layer 1 are connected, in the respective stripe parts, through conductor layers 14 formed on the semiconductor substrate between the respective cells of the respective stripe parts divided into a plurality of cells. Thereby increase of source wiring resistance which is to be caused by increase of length of the stripes can be prevented.

10. 发明专利

JPH04122062A SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH04122062A
公开(公告)日：1992-04-22
申请号：JP24336890
申请日：1990-09-12
申请人： HITACHI LTD , HITACHI MICROCUMPUTER ENG
发明人： NAGANO HIROMI , NIINO KAORU , SHIGEMATSU TAKU , SHINDO YOSHIMI
IPC分类号： H01L27/082 , H01L21/8228
摘要： PURPOSE:To increase a junction dielectric strength of a bi-polar transistor and to reduce malfunctions thereof by injecting a smaller amount of p-type impurity than that of n-type impurity into a surface layer of an n -type buried semiconductor region for setting an impurity density of the surface layer on the p-type collector region side low. CONSTITUTION:A pnp-type bi-polar transistor Tr1 is mounted on a principal plane of a p-type semiconductor substrate 1 through an n -type buried semiconductor region 3, an element isolation region. An impurity density of a p-type collector region (p -type buried semiconductor region 4) of the Tr1 being set high, an impurity density of a surface layer 11 of the region 3, an element isolation region, which has a junction with the p-type collector region, is set low. Processes included are a process in which an n-type impurity is injected to the principal plane of the substrate 1 to form the region 3, an element isolation region, and a process in which a smaller amount of p-type impurity 11p than that of the n-type impurity is injected to the surface layer 11 of the region 3 for setting an impurity density of the surface layer 11 on the region 4 side of the region 3 low. Consequently, a junction dielectric strength of the bi-polar transistor is increased whereas malfunctions are reduced.

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