Electronics and Telecommunications Research Institute

Byung Ho Chung

Sin Hyo Kim

Hyun Sook Cho

Jung Yeon Hwang

Sok Joon Lee

Sang-Woo Lee

Yun-Kyung Lee

Sokjoon Lee

Hyeran Mun

Gun Tae Bae

Sang Woo Lee

Kyo Il Chung

Jeong Nyeo Kim

Yun Kyung Lee

Seung Wan Han

Young Ho Kim

Byeong Cheol Choi

Jae Deok Lim

Kwang Il Lee

Kyunghee Oh

Hyeok Chan Kwon

Hyunsook Cho

Young Hwan Ham

Do Young Chung

Kyung Hee Oh

Hye Ran Moon

Gae Il An

A vessel location validation method and apparatus are provided. The vessel location validation method includes receiving a wireless signal from a vessel, acquiring location information of the vessel from the received wireless signal, and determining whether the acquired location information is valid based on the acquired location information and a signal strength of the received wireless signal.

Method and apparatus for validating location of vessel

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.

Method and system for tracking illegal distributor and preventing illegal content distribution

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.

Group signature system and method providing controllable linkability

A system for detecting a global harmful video includes: a video determination policy generation unit for determining harmfulness of learning video segments from video learning information to analyze occurrence information of harmful learning video segments, and generating a global harmfulness determination policy based on the occurrence information; and a video determination policy execution unit for determining harmfulness of input video segments from information of an input video to analyze occurrence information of harmful input video segments, and determining whether the input video is harmful or not based on the occurrence information of the harmful input video segments and the global harmfulness determination policy.

System and method for detecting global harmful video

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.

Content protection apparatus and content encryption and decryption apparatus using white-box encryption table

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.

Data encoding and decoding apparatus and method thereof for verifying data integrity

There is provided a high-speed pipelined ARIA encryption apparatus. The high-speed pipelined ARIA encryption apparatus includes a round key generator for generating a plurality of round keys required for performing an encryption operation using a master key formed to have uniform bits, a plurality of round units whose number is in proportion to the number of times of round operations corresponding to the number of bit of an input value to receive the round keys and the input value and to perform the round operations, and a plurality of pipelined register provided between the round units to transmit the output value of a previous round unit as the input value of the next round unit. A plurality of round units are provided and pipelined registers are inserted between the round units so that it is possible to improve the performance of processing a large amount of data and to perform ARIA encryption at high speed.

High-speed pipelined ARIA encryption apparatus

There is provided an anonymous service method of providing local linkability. The anonymous service method providing local linkability according to exemplary embodiments of the invention, an anonymous authentication operation based on a short group signature is performed, for which the concept of a local linkability is introduced to secure linkability within the same service domain. Namely, in the interior of a service provider, a virtual index having a fixed value is calculated for each service user, and in this case, although a plurality of service providers collude with each other, they cannot calculate a virtual index having the same value, whereby the linkability can be secured within the same service domain but not within the interiors of different service domains.

Anonymous authentication service method for providing local linkability

Provided is a digital rights management system, in which a process of combining digital content created by the original author with first metadata indicated with rights information of the original author and a process of combining revised digital content with second metadata indicated with rights information of a secondary author, are respectively and separately performed at the server and terminal sides. Thus, the digital rights management system can reduce the load generated at the server side compared to a system in which the server side performs both of the above processes.

User terminal system, digital rights management system including the user terminal system, and method of managing digital rights

A license managing device sets a security area for storing a license file, maintains the security area as an encoded file in an inactive state of the security area by encoding the security area, maintains the security area as a directory in an active state of the security area by decoding the security area, and encodes a license file by using a file encoding key according to the user's request and stores the same in a security area in an active state of the security area.

License managing method and device

An anonymous authentication-based private information management (PIM) system and method are provided. The PIM method includes receiving an anonymous certificate not including user information from an anonymous certification authority; generating an anonymous document including the anonymous certificate and some of the user information; and providing the anonymous document to a web service provider so as to be authenticated and thus provided with a web service by the web service provider. Thus, only a minimum of user information may be provided to the web service provider. In addition, it is possible to strengthen a user's right to self-determination and control over the exposure and use of his or her personal information by allowing a user to manage his or her own personal information or entrusting the PIM server to manage user information. Moreover, it is possible to protect the privacy of a user by preventing the exposure of user information.

Anonymous authentication-based private information management system and method

An intrusion detection system and method of a wireless network providing wireless communication to one or more wireless terminal, and an intrusion detection sensor capable of detecting attacks against wireless network are provided. The intrusion detection system of a wireless network includes: an access point providing wireless communication to a wireless terminal; and an intrusion detection sensor examining packets transmitted and received between the access point and a wireless terminal according to a predetermined detection rule. The access point transmits confirmation information on whether or not an event packet, including critical information on whether or not a wireless line connection between the access point and the wireless terminal is established, is transmitted, to the intrusion detection sensor, and the intrusion detection sensor examines an event packet by using the confirmation information. According to the system and method, a variety of attacks occurring on a wireless network can be effectively detected and systematically controlled.

Intrusion detection sensor detecting attacks against wireless network and system and method of detecting wireless network intrusion

A server certificate verification method in a terminal during. Extensible Authentication Protocol authentication for Internet access is provided, the method including (a) receiving a server certificate from a wireless LAN authentication server, and transmitting a server certificate verification request message of the server certificate to a wireless LAN authentication server via a wireless LAN access server; (b) transmitting by the wireless LAN authentication server an On-line Certificate Status Protocol request message to an On-line Certificate Status Protocol server to verify the server certificate; (c) receiving a result of the server certificate verification performed by the OCSP server using an Extensible Authentication Protocol packet from the wireless LAN authentication server; and (d) determining whether the result of the server certificate verification is valid.

Server authentication verification method on user terminal at the time of extensible authentication protocol authentication for internet access

A system for updating a radio frequency identification (RFID) tag value of a transferred object is contemplated. The RFID tag is updated by having a transferor's RFID reader read an RFID tag attached to an object being transferred and extracting a first RFID tag value. An open RFID value is deciphered through the extracted first RFID tag value. Then, the transferor's RFID reader transmits the first RFID tag value and open RFID value to an RFID reader of a transferee who is receiving the object having the attached RFID tag. The transferee's RFID reader extracts a second RFID tag value of the RFID tag of the transferred object. By using the received first RFID tag value and open RFID value, the second RFID tag value is updated. Accordingly, even using RFID, the property rights of an object having an attached RFID tag can be transferred while maintaining security.

Growing community of inventors

Daejeon, South Korea

Byung Ho Chung