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。

公开(公告)号：US07134021B2

公开(公告)日：2006-11-07

申请号：US09816777

申请日：2001-03-22

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： G06F17/00

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.

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。

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。

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。

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。

公开(公告)号：US6131162A

公开(公告)日：2000-10-10

申请号：US90419

申请日：1998-06-04

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 ,  H04L9/32 ,  H04L9/28 ,  H04L9/30

CPC分类号： H04L63/12 ,  G06F21/10 ,  G06T1/0021 ,  G06T1/005 ,  H04L63/0442 ,  H04L63/08 ,  H04L63/126 ,  H04L9/3236 ,  H04L9/3247 ,  H04N1/32144 ,  H04N21/2541 ,  H04N21/42684 ,  H04N21/44 ,  H04N21/4622 ,  H04N21/4627 ,  H04N21/63345 ,  H04N21/835 ,  H04N7/163 ,  G06T2201/0063 ,  G06T2201/0081 ,  H04L2209/56 ,  H04L2209/60 ,  H04L2463/103 ,  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.

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.

公开(公告)号：US07526645B2

公开(公告)日：2009-04-28

申请号：US10787262

申请日：2004-02-27

申请人： Kunihiko Miyazaki ,  Mitsuru Iwamura ,  Tsutomu Matsumoto ,  Ryoichi Sasaki ,  Hiroshi Yoshiura ,  Hirokazu Aoshima ,  Hideo Noyama ,  Seiichi Susaki ,  Takeshi Matsuki

发明人： Kunihiko Miyazaki ,  Mitsuru Iwamura ,  Tsutomu Matsumoto ,  Ryoichi Sasaki ,  Hiroshi Yoshiura ,  Hirokazu Aoshima ,  Hideo Noyama ,  Seiichi Susaki ,  Takeshi Matsuki

IPC分类号： H04L9/00

CPC分类号： G06F21/64

摘要： An electronic document authenticity assurance technique and an information disclosure system both of which can compatibly realize the assurance of the authenticity of disclosure documents and the deletion of information inappropriate for disclosure. An electronic document is divided into constituent elements and an electronic signature is affixed to an arbitrary subset of a set including all the constituent elements. Otherwise, an electronic signature is affixed to data obtained by binding each of the constituent elements to information specifying the relationship between a respective one of the constituent elements and the structure of the electronic document. Otherwise, the hash values of the respective constituent elements are calculated and an electronic signature is affixed to data obtained by binding the calculated hash values together. Otherwise, random numbers generated for the respective constituent elements are bound together, then the hash values of the respective random-numbered constituent elements are calculated, and then an electronic signature is affixed to data obtained by binding the calculated hash values together.

摘要翻译： 一种电子文件真实性保证技术和信息披露制度，可以兼容地实现披露文件的真实性的保证和删除不适合披露的信息。 电子文档被分成组成元件，并且电子签名被附加到包括所有组成元素的集合的任意子集中。 否则，电子签名附加到通过将每个组成元件绑定到指定组成元件中的相应一个和电子文档的结构之间的关系的信息而获得的数据。 否则，计算各组成要素的哈希值，并将电子签名附加到通过将所计算的散列值结合在一起而获得的数据。 否则，为各构成要素生成的随机数被绑定在一起，然后计算各随机编号的构成要素的哈希值，然后将电子签名附加到通过将计算出的哈希值结合在一起而获得的数据。

公开(公告)号：US20090193259A1

公开(公告)日：2009-07-30

申请号：US12416402

申请日：2009-04-01

申请人： Kunihiko Miyazaki ,  Mitsuru Iwamura ,  Tsutomu Matsumoto ,  Ryoichi Sasaki ,  Hiroshi Yoshiura ,  Hirokazu Aoshima ,  Hideo Noyama ,  Seiichi Susaki ,  Takeshi Matsuki

发明人： Kunihiko Miyazaki ,  Mitsuru Iwamura ,  Tsutomu Matsumoto ,  Ryoichi Sasaki ,  Hiroshi Yoshiura ,  Hirokazu Aoshima ,  Hideo Noyama ,  Seiichi Susaki ,  Takeshi Matsuki

IPC分类号： H04L9/00

CPC分类号： G06F21/64

摘要： An electronic document authenticity assurance technique and an information disclosure system both of which can compatibly realize the assurance of the authenticity of disclosure documents and the deletion of information inappropriate for disclosure. An electronic document is divided into constituent elements and an electronic signature is affixed to an arbitrary subset of a set including all the constituent elements. Otherwise, an electronic signature is affixed to data obtained by binding each of the constituent elements to information specifying the relationship between a respective one of the constituent elements and the structure of the electronic document. Otherwise, the hash values of the respective constituent elements are calculated and an electronic signature is affixed to data obtained by binding the calculated hash values together. Otherwise, random numbers generated for the respective constituent elements are bound together, then the hash values of the respective random-numbered constituent elements are calculated, and then an electronic signature is affixed to data obtained by binding the calculated hash values together.

摘要翻译： 一种电子文件真实性保证技术和信息披露制度，可以兼容地实现披露文件的真实性的保证和删除不适合披露的信息。 电子文档被分成组成元件，并且电子签名被附加到包括所有组成元素的集合的任意子集中。 否则，电子签名附加到通过将每个组成元件绑定到指定组成元件中的相应一个和电子文档的结构之间的关系的信息而获得的数据。 否则，计算各组成要素的哈希值，并将电子签名附加到通过将所计算的散列值结合在一起而获得的数据。 否则，为各构成要素生成的随机数被绑定在一起，然后计算各随机编号的构成要素的哈希值，然后将电子签名附加到通过将计算出的哈希值结合在一起而获得的数据。