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1. 发明授权

US08995660B2 Cryptographic system, cryptographic communication method, encryption apparatus, key generation apparatus, decryption apparatus, content server, program, and storage medium 有权
标题翻译：密码系统，密码通信方式，加密装置，密钥生成装置，解密装置，内容服务器，程序和存储介质
公开(公告)号：US08995660B2
公开(公告)日：2015-03-31
申请号：US13810797
申请日：2011-07-22
申请人： Tetsutaro Kobayashi , Kaku Takeuchi , Sakae Chikara
发明人： Tetsutaro Kobayashi , Kaku Takeuchi , Sakae Chikara
IPC分类号： H04L9/00 , H04L9/14 , H04L9/08 , H04L9/30
CPC分类号： H04L9/14 , H04L9/0836 , H04L9/0847 , H04L9/085 , H04L9/0861 , H04L9/3073
摘要： A cryptographic communication technology that is based on functional encryption and that can operate flexibly is provided. A conversion rule information pair is determined in advance, which has attribute conversion rule information prescribing a conversion rule for converting attribute designation information to attribute information used in a functional encryption algorithm and logical expression conversion rule information prescribing a conversion rule for converting logical expression designation information to logic information used in the functional encryption algorithm. One kind of conversion rule information included in the conversion rule information pair is used to obtain first attribute information or first logic information from input information. The first attribute information or the first logic information is used for encryption. Encryption information is decrypted with a decryption key generated by using second attribute information or second logic information obtained from user information by using the other kind of conversion rule information.
摘要翻译：提供了基于功能加密并且可以灵活操作的加密通信技术。确定转换规则信息对，其具有规定用于将属性指定信息转换为功能加密算法中使用的属性信息的转换规则的属性转换规则信息，以及规定用于转换逻辑表达式指定信息的转换规则的逻辑表达式转换规则信息到功能加密算法中使用的逻辑信息。包括在转换规则信息对中的一种转换规则信息用于从输入信息获得第一属性信息或第一逻辑信息。第一属性信息或第一逻辑信息用于加密。使用通过使用另一种转换规则信息通过使用从用户信息获得的第二属性信息或第二逻辑信息生成的解密密钥对加密信息进行解密。

2. 发明授权

US08964982B2 Cryptographic system, cryptographic communication method, encryption apparatus, key generation apparatus, decryption apparatus, content server, program, and storage medium 有权
标题翻译：密码系统，密码通信方式，加密装置，密钥生成装置，解密装置，内容服务器，程序和存储介质
公开(公告)号：US08964982B2
公开(公告)日：2015-02-24
申请号：US13258187
申请日：2010-04-23
申请人： Kaku Takeuchi , Tetsutaro Kobayashi , Sakae Chikara
发明人： Kaku Takeuchi , Tetsutaro Kobayashi , Sakae Chikara
IPC分类号： H04K1/00 , H04L9/00 , H04L9/30 , H04L9/08 , H04L9/32
CPC分类号： H04L9/3073 , H04L9/0861 , H04L9/3093 , H04L9/3263
摘要： A cryptographic communication technology that is based on predicate encryption and that can operate flexibly is provided. A conversion rule information pair is determined in advance, which has attribute conversion rule information prescribing a conversion rule for converting attribute designation information to attribute information used in a predicate encryption algorithm and predicate conversion rule information prescribing a conversion rule for converting predicate designation information to predicate information used in the predicate encryption algorithm. One kind of conversion rule information included in the conversion rule information pair is used to obtain first attribute information or first predicate information from input information. The first attribute information or the first predicate information is used for encryption. Encryption information is decrypted with a decryption key generated by using second attribute information or second predicate information obtained from user information by using the other kind of conversion rule information.
摘要翻译：提供了基于谓词加密并且可以灵活操作的加密通信技术。确定转换规则信息对，其具有规定用于将属性指定信息转换为在谓词加密算法中使用的属性信息的转换规则的属性转换规则信息，以及规定用于将谓词指定信息转换为谓词的转换规则的谓词转换规则信息谓词加密算法中使用的信息。包括在转换规则信息对中的一种转换规则信息用于从输入信息获得第一属性信息或第一谓词信息。第一属性信息或第一谓词信息用于加密。使用通过使用另一种转换规则信息通过使用从用户信息获得的第二属性信息或第二谓词信息生成的解密密钥对加密信息进行解密。

3. 发明申请

US20130114810A1 CRYPTOGRAPHIC SYSTEM, CRYPTOGRAPHIC COMMUNICATION METHOD, ENCRYPTION APPARATUS, KEY GENERATION APPARATUS, DECRYPTION APPARATUS, CONTENT SERVER, PROGRAM, AND STORAGE MEDIUM 有权
标题翻译： CRYPTOGRAPHIC系统，CRYPTOGRAPHIC通信方法，加密设备，主要生成设备，分解设备，内容服务器，程序和存储介质
公开(公告)号：US20130114810A1
公开(公告)日：2013-05-09
申请号：US13810797
申请日：2011-07-22
申请人： Tetsutaro Kobayashi , Kaku Takeuchi , Sakae Chikara
发明人： Tetsutaro Kobayashi , Kaku Takeuchi , Sakae Chikara
IPC分类号： H04L9/14
CPC分类号： H04L9/14 , H04L9/0836 , H04L9/0847 , H04L9/085 , H04L9/0861 , H04L9/3073
摘要： A cryptographic communication technology that is based on functional encryption and that can operate flexibly is provided. A conversion rule information pair is determined in advance, which has attribute conversion rule information prescribing a conversion rule for converting attribute designation information to attribute information used in a functional encryption algorithm and logical expression conversion rule information prescribing a conversion rule for converting logical expression designation information to logic information used in the functional encryption algorithm. One kind of conversion rule information included in the conversion rule information pair is used to obtain first attribute information or first logic information from input information. The first attribute information or the first logic information is used for encryption. Encryption information is decrypted with a decryption key generated by using second attribute information or second logic information obtained from user information by using the other kind of conversion rule information.
摘要翻译：提供了基于功能加密并且可以灵活操作的加密通信技术。确定转换规则信息对，其具有规定用于将属性指定信息转换为功能加密算法中使用的属性信息的转换规则的属性转换规则信息，以及规定用于转换逻辑表达式指定信息的转换规则的逻辑表达式转换规则信息到功能加密算法中使用的逻辑信息。包括在转换规则信息对中的一种转换规则信息用于从输入信息获得第一属性信息或第一逻辑信息。第一属性信息或第一逻辑信息用于加密。使用通过使用另一种转换规则信息通过使用从用户信息获得的第二属性信息或第二逻辑信息生成的解密密钥对加密信息进行解密。

4. 发明申请

US20120027210A1 CRYPTOGRAPHIC SYSTEM, CRYPTOGRAPHIC COMMUNICATION METHOD, ENCRYPTION APPARATUS, KEY GENERATION APPARATUS, DECRYPTION APPARATUS, CONTENT SERVER, PROGRAM, AND STORAGE MEDIUM 有权
标题翻译： CRYPTOGRAPHIC系统，CRYPTOGRAPHIC通信方法，加密设备，主要生成设备，分解设备，内容服务器，程序和存储介质
公开(公告)号：US20120027210A1
公开(公告)日：2012-02-02
申请号：US13258187
申请日：2010-04-23
申请人： Kaku Takeuchi , Tetsutaro Kobayashi , Sakae Chikara
发明人： Kaku Takeuchi , Tetsutaro Kobayashi , Sakae Chikara
IPC分类号： H04L9/30
CPC分类号： H04L9/3073 , H04L9/0861 , H04L9/3093 , H04L9/3263
摘要： A cryptographic communication technology that is based on predicate encryption and that can operate flexibly is provided. A conversion rule information pair is determined in advance, which has attribute conversion rule information prescribing a conversion rule for converting attribute designation information to attribute information used in a predicate encryption algorithm and predicate conversion rule information prescribing a conversion rule for converting predicate designation information to predicate information used in the predicate encryption algorithm. One kind of conversion rule information included in the conversion rule information pair is used to obtain first attribute information or first predicate information from input information. The first attribute information or the first predicate information is used for encryption. Encryption information is decrypted with a decryption key generated by using second attribute information or second predicate information obtained from user information by using the other kind of conversion rule information.
摘要翻译：提供了基于谓词加密并且可以灵活操作的加密通信技术。确定转换规则信息对，其具有规定用于将属性指定信息转换为在谓词加密算法中使用的属性信息的转换规则的属性转换规则信息，以及规定用于将谓词指定信息转换为谓词的转换规则的谓词转换规则信息谓词加密算法中使用的信息。包括在转换规则信息对中的一种转换规则信息用于从输入信息获得第一属性信息或第一谓词信息。第一属性信息或第一谓词信息用于加密。使用通过使用另一种转换规则信息通过使用从用户信息获得的第二属性信息或第二谓词信息生成的解密密钥对加密信息进行解密。

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