公开(公告)号：US08824728B2

公开(公告)日：2014-09-02

申请号：US13332641

申请日：2011-12-21

Applicant: Sang-Woo Lee ,  Yun-Kyung Lee ,  Sin Hyo Kim ,  Byung Ho Chung ,  Hyeran Mun ,  Sokjoon Lee ,  Gun Tae Bae ,  Jung Yeon Hwang ,  Hyun Sook Cho

Inventor： Sang-Woo Lee ,  Yun-Kyung Lee ,  Sin Hyo Kim ,  Byung Ho Chung ,  Hyeran Mun ,  Sokjoon Lee ,  Gun Tae Bae ,  Jung Yeon Hwang ,  Hyun Sook Cho

IPC: G06K9/00 ,  H04N21/2743 ,  H04N21/426 ,  H04N7/26 ,  H04N21/254 ,  H04N21/8358 ,  H04L9/32 ,  H04N21/8352 ,  H04N21/242 ,  G06T1/00 ,  H04N21/258 ,  H04N21/234 ,  H04N21/2383 ,  H04N21/658

CPC classification number: H04L9/3226 ,  G06T1/0021 ,  H04L2209/606 ,  H04L2209/608 ,  H04N19/467 ,  H04N21/23418 ,  H04N21/2383 ,  H04N21/242 ,  H04N21/2541 ,  H04N21/25866 ,  H04N21/2743 ,  H04N21/42684 ,  H04N21/6582 ,  H04N21/8352 ,  H04N21/8358

Abstract: A system for tracking an illegal distributor and preventing an illegal content distribution includes: a forensic mark generator for receiving content and a content identification code from a content providing apparatus to generate a forensic mark; a forensic mark database for storing the generated forensic mark; a forensic mark insertion unit for inserting the forensic mark into the content; and a content database for storing the content into which the forensic mark has been inserted. The system further includes a content transmitter for transmitting the content into which the forensic mark has been inserted to the content utilization apparatus.

Abstract translation: 用于跟踪非法分发者并防止非法内容分发的系统包括：用于从内容提供设备接收内容的内容识别码和用于生成法医标记的取证标记生成器; 用于存储生成的法医标记的法医标记数据库; 用于将法医标记插入到内容中的法医标记插入单元; 以及内容数据库，用于存储已经插入了法医标记的内容。 该系统还包括内容发送器，用于将已经将法医标记插入的内容发送到内容利用装置。

公开(公告)号：US08712041B2

公开(公告)日：2014-04-29

申请号：US13284801

申请日：2011-10-28

Applicant: Yun-Kyung Lee ,  Sin Hyo Kim ,  Byung Ho Chung ,  Hyeran Mun ,  Sang-Woo Lee ,  Sokjoon Lee ,  Jung Yeon Hwang ,  Gun Tae Bae ,  Hyun Sook Cho

Inventor： Yun-Kyung Lee ,  Sin Hyo Kim ,  Byung Ho Chung ,  Hyeran Mun ,  Sang-Woo Lee ,  Sokjoon Lee ,  Jung Yeon Hwang ,  Gun Tae Bae ,  Hyun Sook Cho

IPC: H04L9/00

CPC classification number: H04L9/0618 ,  H04L9/0869 ,  H04L2209/16

Abstract: A content protection apparatus using a white-box encryption table includes: a random number generation unit for generating a random number; a white-box encryption table for encrypting the random number and user information provided from a user to generate an encrypted output value; and an operation unit for performing an operation between the encrypted output value and data inputted from an outside to encrypt or decrypt the data.

Abstract translation: 使用白盒加密表的内容保护装置包括：随机数生成单元，用于生成随机数; 用于加密从用户提供的随机数和用户信息以生成加密的输出值的白盒加密表; 以及操作单元，用于执行加密的输出值和从外部输入的数据之间的操作以加密或解密数据。

公开(公告)号：US08645690B2

公开(公告)日：2014-02-04

申请号：US13327099

申请日：2011-12-15

Applicant: Sok-Joon Lee ,  Jung-Yeon Hwang ,  Gun-Tae Bae ,  Byung-Ho Chung ,  Sin-Hyo Kim ,  Hye-Ran Mun ,  Sang-Woo Lee ,  Yun-Kyung Lee ,  Hyun-Sook Cho

Inventor： Sok-Joon Lee ,  Jung-Yeon Hwang ,  Gun-Tae Bae ,  Byung-Ho Chung ,  Sin-Hyo Kim ,  Hye-Ran Mun ,  Sang-Woo Lee ,  Yun-Kyung Lee ,  Hyun-Sook Cho

IPC: H04L9/00

CPC classification number: H04L9/321 ,  H04L9/0891 ,  H04L9/3255 ,  H04L2209/42

Abstract: Disclosed herein is a method of verifying key validity and a server for performing the method. The method is configured such that a service provision server verifies key validity in an anonymous service for providing local linkability. The service provision server receives a revocation list. A local revocation list is generated using the received revocation list and a secret key. A virtual index of a service user required to verify key validity is calculated. Whether a key of the service user is valid is verified, based on whether the virtual index is included in the local revocation list.

Abstract translation: 本文公开了一种验证密钥有效性的方法和用于执行该方法的服务器。 该方法被配置为使得服务提供服务器验证匿名服务中的密钥有效性以提供本地可链接性。 服务提供服务器接收撤销列表。 使用接收到的撤销列表和密钥生成本地撤销列表。 计算验证密钥有效性所需的服务用户的虚拟索引。 基于虚拟索引是否包括在本地撤销列表中，验证服务用户的密钥是否有效。

公开(公告)号：US20120170740A1

公开(公告)日：2012-07-05

申请号：US13284801

申请日：2011-10-28

Applicant: Yun-Kyung LEE ,  Sin Hyo Kim ,  Byung Ho Chung ,  Hyeran Mun ,  Sang-Woo Lee ,  Sokjoon Lee ,  Jung Yeon Hwang ,  Gun Tae Bae ,  Hyun Sook Cho

Inventor： Yun-Kyung LEE ,  Sin Hyo Kim ,  Byung Ho Chung ,  Hyeran Mun ,  Sang-Woo Lee ,  Sokjoon Lee ,  Jung Yeon Hwang ,  Gun Tae Bae ,  Hyun Sook Cho

IPC: H04L9/28

CPC classification number: H04L9/0618 ,  H04L9/0869 ,  H04L2209/16

Abstract: A content protection apparatus using a white-box encryption table includes: a random number generation unit for generating a random number; a white-box encryption table for encrypting the random number and user information provided from a user to generate an encrypted output value; and an operation unit for performing an operation between the encrypted output value and data inputted from an outside to encrypt or decrypt the data.

Abstract translation: 使用白盒加密表的内容保护装置包括：随机数生成单元，用于生成随机数; 用于加密从用户提供的随机数和用户信息以生成加密的输出值的白盒加密表; 以及操作单元，用于执行加密的输出值和从外部输入的数据之间的操作以加密或解密数据。

公开(公告)号：US20120163654A1

公开(公告)日：2012-06-28

申请号：US13332641

申请日：2011-12-21

Applicant: Sang-Woo LEE ,  Yun-Kyung LEE ,  Sin Hyo KIM ,  Byung Ho CHUNG ,  Hyeran MUN ,  Sokjoon LEE ,  Gun Tae BAE ,  Jung Yeon HWANG ,  Hyun Sook CHO

Inventor： Sang-Woo LEE ,  Yun-Kyung LEE ,  Sin Hyo KIM ,  Byung Ho CHUNG ,  Hyeran MUN ,  Sokjoon LEE ,  Gun Tae BAE ,  Jung Yeon HWANG ,  Hyun Sook CHO

IPC: G06K9/00 ,  H04L9/32

CPC classification number: H04L9/3226 ,  G06T1/0021 ,  H04L2209/606 ,  H04L2209/608 ,  H04N19/467 ,  H04N21/23418 ,  H04N21/2383 ,  H04N21/242 ,  H04N21/2541 ,  H04N21/25866 ,  H04N21/2743 ,  H04N21/42684 ,  H04N21/6582 ,  H04N21/8352 ,  H04N21/8358

Abstract: A system for tracking an illegal distributor and preventing an illegal content distribution includes: a forensic mark generator for receiving content and a content identification code from a content providing apparatus to generate a forensic mark; a forensic mark database for storing the generated forensic mark; a forensic mark insertion unit for inserting the forensic mark into the content; and a content database for storing the content into which the forensic mark has been inserted. The system further includes a content transmitter for transmitting the content into which the forensic mark has been inserted to the content utilization apparatus.

Abstract translation: 用于跟踪非法分发者并防止非法内容分发的系统包括：用于从内容提供设备接收内容的内容识别码和用于生成法医标记的取证标记生成器; 用于存储生成的法医标记的法医标记数据库; 用于将法医标记插入到内容中的法医标记插入单元; 以及内容数据库，用于存储已经插入了法医标记的内容。 该系统还包括内容发送器，用于将已经将法医标记插入的内容发送到内容利用装置。

公开(公告)号：US20120159166A1

公开(公告)日：2012-06-21

申请号：US13327099

申请日：2011-12-15

Applicant: Sok-Joon LEE ,  Jung-Yeon Hwang ,  Gun-Tae Bae ,  Byung-Ho Chung ,  Sin-Hyo Kim ,  Hye-Ran Mun ,  Sang-Woo Lee ,  Yun-Kyung Lee ,  Hyun-Sook Cho

Inventor： Sok-Joon LEE ,  Jung-Yeon Hwang ,  Gun-Tae Bae ,  Byung-Ho Chung ,  Sin-Hyo Kim ,  Hye-Ran Mun ,  Sang-Woo Lee ,  Yun-Kyung Lee ,  Hyun-Sook Cho

IPC: H04L9/32

CPC classification number: H04L9/321 ,  H04L9/0891 ,  H04L9/3255 ,  H04L2209/42

Abstract: Disclosed herein is a method of verifying key validity and a server for performing the method. The method is configured such that a service provision server verifies key validity in an anonymous service for providing local linkability. The service provision server receives a revocation list. A local revocation list is generated using the received revocation list and a secret key. A virtual index of a service user required to verify key validity is calculated. Whether a key of the service user is valid is verified, based on whether the virtual index is included in the local revocation list.

Abstract translation: 本文公开了一种验证密钥有效性的方法和用于执行该方法的服务器。 该方法被配置为使得服务提供服务器验证匿名服务中的密钥有效性以提供本地可链接性。 服务提供服务器接收撤销列表。 使用接收到的撤销列表和密钥生成本地撤销列表。 计算验证密钥有效性所需的服务用户的虚拟索引。 基于虚拟索引是否包括在本地撤销列表中，验证服务用户的密钥是否有效。

公开(公告)号：US20120084567A1

公开(公告)日：2012-04-05

申请号：US13079588

申请日：2011-04-04

Applicant: Jung Yeon HWANG ,  Sokjoon LEE ,  Gun Tae BAE ,  Yun-Kyung LEE ,  Hyeran MUN ,  Sang-Woo LEE ,  Sin Hyo KIM ,  Byung Ho CHUNG ,  Hyrun Sook CHO

Inventor： Jung Yeon HWANG ,  Sokjoon LEE ,  Gun Tae BAE ,  Yun-Kyung LEE ,  Hyeran MUN ,  Sang-Woo LEE ,  Sin Hyo KIM ,  Byung Ho CHUNG ,  Hyrun Sook CHO

IPC: H04L9/32

CPC classification number: H04L9/3255

Abstract: A group signature system includes: a key issuer server for generating a first parameter of a group public key, generating a corresponding master issuing key, and issuing a signature key to a user when a user device joins; an opener server for generating a second parameter of the group public key, and a corresponding master opening key and master linking key; and a linker server for checking whether two valid signatures have been linked by using the master linking key when the two signatures corresponding to a group public key are given. The group signature system further includes: a signature verifying unit for confirming a validity of the given signatures and a signer information confirming unit for confirming a validity of singer confirming information generated by the opener server.

Abstract translation: 组签名系统包括：密钥发行者服务器，用于生成组公钥的第一参数，生成对应的主发行密钥，以及当用户设备加入时向用户发出签名密钥; 用于生成组公钥的第二参数的开启器服务器，以及对应的主开放密钥和主链接密钥; 以及链接服务器，用于当给出对应于组公钥的两个签名时，通过使用主链接密钥来检查两个有效签名是否已被链接。 组签名系统还包括：用于确认给定签名的有效性的签名验证单元和用于确认由开启服务器生成的歌手确认信息的有效性的签名者信息确认单元。

公开(公告)号：US08712037B2

公开(公告)日：2014-04-29

申请号：US13284813

申请日：2011-10-28

Applicant: Yun-Kyung Lee ,  Sin Hyo Kim ,  Byung Ho Chung ,  Sang Woo Lee ,  Hyeran Mun ,  Sokjoon Lee ,  Gun Tae Bae ,  Jung Yeon Hwang ,  Hyun Sook Cho

Inventor： Yun-Kyung Lee ,  Sin Hyo Kim ,  Byung Ho Chung ,  Sang Woo Lee ,  Hyeran Mun ,  Sokjoon Lee ,  Gun Tae Bae ,  Jung Yeon Hwang ,  Hyun Sook Cho

IPC: H04K1/00 ,  H04L9/00 ,  H04L9/28

CPC classification number: H04L9/0618 ,  H04L9/0822 ,  H04L2209/16 ,  H04L2209/603

Abstract: A data encoding apparatus for verifying data integrity by using a white box cipher includes: an encoding unit for encoding content by using a white box cipher table; and an arithmetic logic unit for performing an arithmetic logic operation on the white box cipher table and content information to output an encoded white box cipher table. The arithmetic logic operation is an exclusive OR operation. The content information is license information of the content or hash value of the license information of the content.

Abstract translation: 一种用于通过使用白盒密码验证数据完整性的数据编码装置，包括：编码单元，用于通过使用白盒密码表对内容进行编码; 以及用于对白盒密码表执行算术逻辑运算的算术逻辑单元和内容信息，以输出编码的白盒密码表。 算术逻辑运算是异或运算。 内容信息是内容的许可信息的内容或哈希值的许可信息。

公开(公告)号：US08571210B2

公开(公告)日：2013-10-29

申请号：US13241124

申请日：2011-09-22

Applicant: Sin-Hyo Kim ,  Yun-Kyung Lee ,  Byung-Ho Chung ,  Hye-Ran Mun ,  Sang-Woo Lee ,  Sok-Joon Lee ,  Jung-Yeon Hwang ,  Gun-Tae Bae ,  Hyun-Sook Cho

Inventor： Sin-Hyo Kim ,  Yun-Kyung Lee ,  Byung-Ho Chung ,  Hye-Ran Mun ,  Sang-Woo Lee ,  Sok-Joon Lee ,  Jung-Yeon Hwang ,  Gun-Tae Bae ,  Hyun-Sook Cho

IPC: H04L9/00

CPC classification number: H04L9/08 ,  G06F21/10 ,  G06F2221/0755 ,  H04L2209/16 ,  H04L2209/603

Abstract: The present invention relates to a content protection apparatus and method using binding of additional information to an encryption key. The content protection apparatus includes an encryption unit for creating an encryption key required to encrypt data requested by a user terminal and then generating encrypted data in which the data is encrypted. An additional information management unit manages additional information including authority information about the encrypted data. A White-Box Cryptography (WBC) processing unit generates a WBC table required to bind the encryption key corresponding to the encrypted data to the additional information. A bound data generation unit generates bound data in which the encrypted key is bound to the additional information, using a cipher included in the WBC table.

Abstract translation: 本发明涉及使用附加信息与加密密钥的绑定的内容保护装置和方法。 内容保护装置包括：加密单元，用于创建加密由用户终端请求的数据所需的加密密钥，然后生成加密数据的加密数据。 附加信息管理单元管理包括关于加密数据的权限信息的附加信息。 白盒加密（WBC）处理单元生成将加密数据对应的加密密钥与附加信息绑定所需的WBC表。 绑定数据生成单元使用包含在WBC表中的密码来生成加密密钥与附加信息绑定的绑定数据。

公开(公告)号：US20120166309A1

公开(公告)日：2012-06-28

申请号：US13337802

申请日：2011-12-27

Applicant: Jung Yeon HWANG ,  Sokjoon Lee ,  Gun Tae Bae ,  Byung Ho Chung ,  Sin Hyo Kim ,  Yun-Kyung Lee ,  Sang-Woo Lee ,  Hyeran Mun ,  Hyun Sook Cho

Inventor： Jung Yeon HWANG ,  Sokjoon Lee ,  Gun Tae Bae ,  Byung Ho Chung ,  Sin Hyo Kim ,  Yun-Kyung Lee ,  Sang-Woo Lee ,  Hyeran Mun ,  Hyun Sook Cho

IPC: G06Q30/06 ,  G06K5/00

CPC classification number: G06Q30/0613 ,  G06Q20/10 ,  G06Q20/3274 ,  G06Q20/3276 ,  H04L63/0823 ,  H04L63/0853 ,  H04L63/18 ,  H04L2463/082 ,  H04W12/00522

Abstract: Disclosed is an authentication method using barcodes. the authentication method includes: converting into a first barcode and outputting, by a first user device, authentication related information provided from a service providing server; receiving, by a second user device, the first barcode; generating, by the second user device, signature information or authentication information on the authentication related information by using a signature key or a certificate; and providing, by the second user device, the signature information or the authentication information to the service providing server.

Abstract translation: 公开了使用条形码的认证方法。 所述认证方法包括：转换成第一条形码并由第一用户装置输出从服务提供服务器提供的认证相关信息; 通过第二用户设备接收第一条形码; 通过使用签名密钥或证书，由所述第二用户设备生成关于认证相关信息的签名信息或认证信息; 以及由所述第二用户设备向所述服务提供服务器提供所述签名信息或所述认证信息。