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1. 发明授权

US5465299A Electronic document processing system and method of forming digital signature 失效
标题翻译：电子文件处理系统和数字签名形成方法
公开(公告)号：US5465299A
公开(公告)日：1995-11-07
申请号：US158618
申请日：1993-11-29
申请人： Hiroshi Matsumoto , Kazuo Takaragi , Seiichi Susaki , Hiroyuki Maezawa , Shinobu Koizumi
发明人： Hiroshi Matsumoto , Kazuo Takaragi , Seiichi Susaki , Hiroyuki Maezawa , Shinobu Koizumi
IPC分类号： H04L9/32 , H04K1/00
CPC分类号： H04L9/3247 , G06Q50/188 , H04L9/3236 , H04L2209/60
摘要： In a terminal which received an electronic document with at leastone digital signature, when a user changes the contents of the received electronic document, a new digital signature is produced by enciphering signature data by using a secret key of the user, the signature data including a hash total of the document of a new version, personal information of the user (signatory), and version management information necessary to restore an electronic document of a former version from the electronic document of the new version. The new digital signature and the new version electronic document version are transmitted together with the received digital signature to a next person on a document circulating route.
摘要翻译：在接收到具有至少一个数字签名的电子文档的终端中，当用户改变所接收的电子文档的内容时，通过使用用户的秘密密钥加密签名数据来产生新的数字签名，签名数据包括新版本的文档的哈希总数，用户的个人信息（签名人）以及从新版本的电子文档恢复原版本的电子文档所需的版本管理信息。新的数字签名和新版本的电子文档版本与收到的数字签名一起发送到文档循环路由上的下一个人。

2. 发明授权

US5309516A Group cipher communication method and group cipher communication system 失效
标题翻译：组密码通信方式和组密码通信系统
公开(公告)号：US5309516A
公开(公告)日：1994-05-03
申请号：US76862
申请日：1993-06-15
申请人： Kazuo Takaragi , Seiichi Susaki , Hiroshi Matsumoto , Tsutomu Nakamura
发明人： Kazuo Takaragi , Seiichi Susaki , Hiroshi Matsumoto , Tsutomu Nakamura
IPC分类号： H04L9/08 , H04L9/00
CPC分类号： H04L9/0833 , H04L9/0861
摘要： Method and system which permit, among a plurality of terminals, group cipher communication from a desired terminal to a number of desired terminals while ensuring safety of security. A plurality of secret values called master keys which are common to a predetermined subset of IC cards are stored in an IC card. A terminal initially starting communication generates a destination indicator to transmit it to other terminals, selects one of a plurality of master keys stored in an IC card on the basis of the destination indicator, generates a group key by using the selected master key, and performs encipherment and decipherment of a communication message by using the generated group key to carry out broadcast. A terminal standing for a destination receives the destination indicator, selects one of a plurality of master keys on the basis of the destination indicator, generates the group key on the basis of the selected master key and performs encipherment and decipherment of the communication message by using the generated group key.
摘要翻译：允许在多个终端之间进行组合密码从所期望的终端到多个所需终端的通信，同时确保安全性的方法和系统。被称为主密钥的多个秘密值被存储在IC卡的预定的IC卡子集中。最初开始通信的终端生成目的地指示符以将其发送到其他终端，基于目的地指示符选择存储在IC卡中的多个主密钥中的一个，通过使用所选择的主密钥生成组密钥，并执行通过使用生成的组密钥进行广播来加密和解密通信消息。站在目的地的终端接收目的地指示符，根据目的地指示符选择多个主密钥中的一个，根据选择的主密钥生成组密钥，并通过使用该密钥进行通信消息的加密和解密生成组密钥。

3. 发明授权

US07200682B2 Time stamp generating system 失效
标题翻译：时间戳生成系统
公开(公告)号：US07200682B2
公开(公告)日：2007-04-03
申请号：US10223677
申请日：2002-08-20
申请人： Kunihiko Miyazaki , Seiichi Susaki , Kazuo Takaragi , Hiroshi Yoshiura , Takeshi Matsuki , Hisashi Toyoshima , Mitsuru Iwamura , Tsutomu Matsumoto , Ryoichi Sasaki
发明人： Kunihiko Miyazaki , Seiichi Susaki , Kazuo Takaragi , Hiroshi Yoshiura , Takeshi Matsuki , Hisashi Toyoshima , Mitsuru Iwamura , Tsutomu Matsumoto , Ryoichi Sasaki
IPC分类号： G06F15/16
CPC分类号： G06Q30/06 , H04L9/3297
摘要： A time stamp generating system has a time distribution server for generating time data depending on time and a user PC for holding time certification objective digital data. The time distribution server generates time data corresponding to a time point and distributes the time data. The user PC calculates time stamp generating data by using the time certification objective data as an input, acquires the time data generated by the time distribution server, and processes the time data on the basis of the time stamp generating data to obtain a time stamp.
摘要翻译：时间戳生成系统具有用于根据时间产生时间数据的时间分配服务器和用于保持时间认证目标数字数据的用户PC。时间分配服务器生成对应于时间点的时间数据并分发时间数据。用户PC通过使用时间认证对象数据作为输入来计算产生数据的时间戳，获取由时间分配服务器生成的时间数据，并根据时间戳生成数据来处理时间数据以获得时间戳。

4. 发明授权

US06816969B2 Digital signature generating method and digital signature verifying method 有权
标题翻译：数字签名生成方法和数字签名验证方法
公开(公告)号：US06816969B2
公开(公告)日：2004-11-09
申请号：US09797260
申请日：2001-02-28
申请人： Kunihiko Miyazaki , Ryoichi Sasaki , Kazuo Takaragi , Seiichi Susaki , Hisanori Mishima , Takeshi Matsuki , Kunihito Takeuchi , Mitsuru Iwamura , Tsutomu Matsumoto
发明人： Kunihiko Miyazaki , Ryoichi Sasaki , Kazuo Takaragi , Seiichi Susaki , Hisanori Mishima , Takeshi Matsuki , Kunihito Takeuchi , Mitsuru Iwamura , Tsutomu Matsumoto
IPC分类号： G06F1700
CPC分类号： H04L9/3255 , H04L2209/38
摘要： In a signature generating method where not necessarily all of a plurality of signature generating devices work together each time to generate signatures, the present invention seeks to correctly and securely reflect data relating to previous signatures. When generating signatures, the data used for the next signature is sent beforehand to the other signature generating devices. Also, when generating signatures, at least one of the devices is used consecutively, thus allowing history data to be shared during signature generation.

5. 发明授权

US07770009B2 Digital signing method 有权
标题翻译：数字签名方式
公开(公告)号：US07770009B2
公开(公告)日：2010-08-03
申请号：US11999373
申请日：2007-12-04
申请人： Kunihiko Miyazaki , Ryoichi Sasaki , Kazuo Takaragi , Seiichi Susaki , Toshiyuki Moritsu , Mizuhiro Sakai , Mitsuru Iwamura , Tsutomu Matsumoto
发明人： Kunihiko Miyazaki , Ryoichi Sasaki , Kazuo Takaragi , Seiichi Susaki , Toshiyuki Moritsu , Mizuhiro Sakai , Mitsuru Iwamura , Tsutomu Matsumoto
IPC分类号： H04L9/32
CPC分类号： H04L9/3297 , H04L9/321 , H04L9/3247 , H04L2209/56
摘要： According to the invention, techniques for authenticating that a digitally signed document is genuine. Specific embodiments according to the present invention can determine whether a digital signature was generated by a digital signature generator, or if the digital signature was generated by a third party posing as the digital signature generator. Specific embodiments can provide independent verification of digital signer identity based upon prior signed messages, time/date stamps, and the like. Techniques according to the present invention can be embodied in methods, apparatus, computer software and systems.
摘要翻译：根据本发明，用于认证数字签名的文档是真实的技术。根据本发明的具体实施例可以确定数字签名是否由数字签名生成器生成，或者数字签名是否由构成数字签名生成器的第三方生成。具体实施例可以基于先前签名的消息，时间/日期戳等来提供数字签名者身份的独立验证。根据本发明的技术可以体现在方法，装置，计算机软件和系统中。

6. 发明授权

US07694126B2 Method and system for recovering the validity of cryptographically signed digital data 有权
标题翻译：用于恢复加密签名的数字数据的有效性的方法和系统
公开(公告)号：US07694126B2
公开(公告)日：2010-04-06
申请号：US11199615
申请日：2005-08-08
申请人： Kunihiko Miyazaki , Hiroshi Yoshiura , Seiichi Susaki , Ryoichi Sasaki , Kazuo Takaragi , Hisashi Toyoshima , Takeshi Matsuki
发明人： Kunihiko Miyazaki , Hiroshi Yoshiura , Seiichi Susaki , Ryoichi Sasaki , Kazuo Takaragi , Hisashi Toyoshima , Takeshi Matsuki
IPC分类号： H04L29/06 , H04L9/32
CPC分类号： G06F21/645 , G06F21/64 , G06F2221/2101 , G06Q20/3825 , H04L9/3252 , H04L63/0428 , H04L63/12 , H04L2209/38 , H04L2209/56 , H04L2209/60
摘要： According to the present invention, techniques, including a method and system, for restoring and/or validating data and/or associated signature log entries are provided. One embodiment of the present invention provides a method for validating a restored message, having an entry generated in a signature log for a message, where the entry includes cryptographic information associated with the message. Next, when said message is lost, the restored message is generated responsive to a request; and the restored message is validated using the signature log. In another embodiment a method for validating a selected log entry by using a signature log having a plurality of recorded log entries is provided. The method includes: computing a cryptographic value for the selected log entry; and determining if the cryptographic value is part of another recorded log entry.
摘要翻译：根据本发明，提供了用于恢复和/或验证数据和/或相关签名日志条目的技术，包括方法和系统。本发明的一个实施例提供一种用于验证恢复的消息的方法，其具有在消息的签名日志中生成的条目，其中该条目包括与该消息相关联的加密信息。接下来，当所述消息丢失时，响应于请求产生恢复的消息; 并且使用签名日志验证恢复的消息。在另一个实施例中，提供了通过使用具有多个记录日志条目的签名日志来验证所选择的日志条目的方法。该方法包括：计算所选日志条目的加密值; 以及确定加密值是否是另一个记录的日志条目的一部分。

7. 发明申请

US20080098232A1 Digital signing method 有权
标题翻译：数字签名方式
公开(公告)号：US20080098232A1
公开(公告)日：2008-04-24
申请号：US11999373
申请日：2007-12-04
申请人： Kunihiko Miyazaki , Ryoichi Sasaki , Kazuo Takaragi , Seiichi Susaki , Toshiyuki Moritsu , Mizuhiro Sakai , Mitsuru Iwamura , Tsutomu Matsumoto
发明人： Kunihiko Miyazaki , Ryoichi Sasaki , Kazuo Takaragi , Seiichi Susaki , Toshiyuki Moritsu , Mizuhiro Sakai , Mitsuru Iwamura , Tsutomu Matsumoto
IPC分类号： H04L9/32
CPC分类号： H04L9/3297 , H04L9/321 , H04L9/3247 , H04L2209/56
摘要： According to the invention, techniques for authenticating that a digitally signed document is genuine. Specific embodiments according to the present invention can determine whether a digital signature was generated by a digital signature generator, or if the digital signature was generated by a third party posing as the digital signature generator. Specific embodiments can provide independent verification of digital signer identity based upon prior signed messages, time/date stamps, and the like. Techniques according to the present invention can be embodied in methods, apparatus, computer software and systems.
摘要翻译：根据本发明，用于认证数字签名的文档是真实的技术。根据本发明的具体实施例可以确定数字签名是否由数字签名生成器生成，或者数字签名是否由构成数字签名生成器的第三方生成。具体实施例可以基于先前签名的消息，时间/日期戳等来提供数字签名者身份的独立验证。根据本发明的技术可以体现在方法，装置，计算机软件和系统中。

8. 发明申请

US20060059357A1 Method and system for recovering the validity of cryptographically signed digital data 有权
标题翻译：用于恢复加密签名的数字数据的有效性的方法和系统
公开(公告)号：US20060059357A1
公开(公告)日：2006-03-16
申请号：US11199615
申请日：2005-08-08
申请人： Kunihiko Miyazaki , Hiroshi Yoshiura , Seiichi Susaki , Ryoichi Sasaki , Kazuo Takaragi , Hisashi Toyoshima , Takeshi Matsuki
发明人： Kunihiko Miyazaki , Hiroshi Yoshiura , Seiichi Susaki , Ryoichi Sasaki , Kazuo Takaragi , Hisashi Toyoshima , Takeshi Matsuki
IPC分类号： H04L9/00
CPC分类号： G06F21/645 , G06F21/64 , G06F2221/2101 , G06Q20/3825 , H04L9/3252 , H04L63/0428 , H04L63/12 , H04L2209/38 , H04L2209/56 , H04L2209/60
摘要： According to the present invention, techniques, including a method and system, for restoring and/or validating data and/or associated signature log entries are provided. One embodiment of the present invention provides a method for validating a restored message, having an entry generated in a signature log for a message, where the entry includes cryptographic information associated with the message. Next, when said message is lost, the restored message is generated responsive to a request; and the restored message is validated using the signature log. In another embodiment a method for validating a selected log entry by using a signature log having a plurality of recorded log entries is provided. The method includes: computing a cryptographic value for the selected log entry; and determining if the cryptographic value is part of another recorded log entry.
摘要翻译：根据本发明，提供了用于恢复和/或验证数据和/或相关签名日志条目的技术，包括方法和系统。本发明的一个实施例提供一种用于验证恢复的消息的方法，其具有在消息的签名日志中生成的条目，其中该条目包括与该消息相关联的加密信息。接下来，当所述消息丢失时，响应于请求产生恢复的消息; 并且使用签名日志验证恢复的消息。在另一个实施例中，提供了通过使用具有多个记录日志条目的签名日志来验证所选择的日志条目的方法。该方法包括：计算所选日志条目的加密值; 以及确定加密值是否是另一个记录的日志条目的一部分。

9. 发明申请

US20050182939A1 Digital data authentication method 审中-公开
标题翻译：数字数据认证方法
公开(公告)号：US20050182939A1
公开(公告)日：2005-08-18
申请号：US11086465
申请日：2005-03-23
申请人： Hiroshi Yoshiura , Kazuo Takaragi , Ryoichi Sasaki , Seiichi Susaki , Hisashi Toyoshima , Tsukasa Saito
发明人： Hiroshi Yoshiura , Kazuo Takaragi , Ryoichi Sasaki , Seiichi Susaki , Hisashi Toyoshima , Tsukasa Saito
IPC分类号： G06F21/10 , G06T1/00 , H04L29/06 , H04N1/32 , H04L9/00
CPC分类号： H04L63/12 , G06F21/10 , G06T1/0021 , G06T1/005 , G06T2201/0063 , G06T2201/0081 , H04L9/3236 , H04L9/3247 , H04L63/0442 , H04L63/08 , H04L63/126 , H04L2209/56 , H04L2209/60 , H04L2463/103 , H04N1/32144 , H04N7/163 , H04N21/2541 , H04N21/42684 , H04N21/44 , H04N21/4622 , H04N21/4627 , H04N21/63345 , H04N21/835 , H04N2201/323 , H04N2201/3236
摘要： This invention provides a method for identifying a purchaser who purchased content from which an illegal copy was produced. A provider system encrypts a content purchased by the purchaser using a public key of a purchaser system and sends the encrypted content to the purchaser system. The purchaser system creates a digital signature of the content with the use of a private key of its own and embeds the created digital signature into the received content. When an illegal copy is found, the provider system verifies the digital signature, embedded in the illegal copy as a digital watermark, to identify the purchaser who purchased the content from which the illegal copy was produced.
摘要翻译：本发明提供一种用于识别购买从其产生非法拷贝的内容的购买者的方法。提供者系统使用购买者系统的公钥加密由购买者购买的内容，并将加密的内容发送给购买者系统。购买者系统通过使用其自身的私钥来创建内容的数字签名，并将创建的数字签名嵌入到接收的内容中。当发现非法副本时，提供者系统将嵌入在非法拷贝中的数字签名作为数字水印进行验证，以识别购买从其中产生非法拷贝的内容的购买者。

10. 发明授权

US06499105B1 Digital data authentication method 失效
标题翻译：数字数据认证方法
公开(公告)号：US06499105B1
公开(公告)日：2002-12-24
申请号：US09621697
申请日：2000-07-21
申请人： Hiroshi Yoshiura , Kazuo Takaragi , Ryoichi Sasaki , Seiichi Susaki , Hisashi Toyoshima , Tsukasa Saito
发明人： Hiroshi Yoshiura , Kazuo Takaragi , Ryoichi Sasaki , Seiichi Susaki , Hisashi Toyoshima , Tsukasa Saito
IPC分类号： H04L932
CPC分类号： H04L63/12 , G06F21/10 , G06T1/0021 , G06T1/005 , G06T2201/0063 , G06T2201/0081 , H04L9/3236 , H04L9/3247 , H04L63/0442 , H04L63/08 , H04L63/126 , H04L2209/56 , H04L2209/60 , H04L2463/103 , H04N1/32144 , H04N7/163 , H04N21/2541 , H04N21/42684 , H04N21/44 , H04N21/4622 , H04N21/4627 , H04N21/63345 , H04N21/835 , H04N2201/323 , H04N2201/3236
摘要： This invention provides a method for identifying a purchaser who purchased content from which an illegal copy was produced. A provider system encrypts purchased by the purchaser using a public key of a purchaser system and sends the encrypted content to the purchaser system. The purchaser system creates a digital signature of the content with the use of a private key of its own and embeds the created digital signature into the received content. When an illegal copy is found, the provider system verifies the digital signature, embedded in the illegal copy as a digital watermark, to identify the purchaser who purchased the content from which the illegal copy was produced.
摘要翻译：本发明提供一种用于识别购买从其产生非法拷贝的内容的购买者的方法。提供者系统使用购买者系统的公开密钥来购买购买者，并将加密的内容发送给购买者系统。购买者系统通过使用其自身的私钥来创建内容的数字签名，并将创建的数字签名嵌入到接收的内容中。当发现非法副本时，提供者系统将嵌入在非法拷贝中的数字签名作为数字水印进行验证，以识别购买从其中产生非法拷贝的内容的购买者。

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