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公开(公告)号：KR1020130085491A
公开(公告)日：2013-07-30
申请号：KR1020110132068
申请日：2011-12-09
Applicant: 한국전자통신연구원
CPC classification number: H04L9/0861 , H04L9/3073
Abstract: PURPOSE: A search available password system at multilateral environment capable of the index verification and tracking and a method thereof are provided to verify the index which is produced by each user, in the data based in which a plurality of user uses at the same time, and are provided to track the user who produced the index. CONSTITUTION: A key distribution center (200) distributes a personal secret key to a user (S102). The key distribution center tracks the information about a user who produced the index (S112). A user terminal device (204) produces the index for searching the database by using the personal secret key (S104). A database (DB) server (202) verifies the index which is produced in the user terminal. The DB server searches and provides the data which corresponds to the verified index (S110). [Reference numerals] (200) Key distribution center; (202) Database (DB) server; (204) User terminal device; (AA) System parameter generation; (BB) Public key distribution; (S104) Index generation; (S106) Index verification; (S108) Trap door generation; (S110) Searching; (S112) Tracing
Abstract translation: 目的：提供能够进行索引验证和跟踪的多边环境下的搜索可用密码系统及其方法，用于在多个用户同时使用的数据中验证由每个用户产生的索引， 并且被提供以跟踪产生索引的用户。 构成：密钥分配中心（200）向用户分配个人秘密密钥（S102）。 密钥分配中心跟踪有关生成索引的用户的信息（S112）。 用户终端设备（204）通过使用个人秘密密钥产生用于搜索数据库的索引（S104）。 数据库（DB）服务器（202）验证在用户终端中产生的索引。 DB服务器搜索并提供与验证索引对应的数据（S110）。 （附图标记）（200）钥匙配送中心; （202）数据库（DB）服务器; （204）用户终端设备; （AA）系统参数生成; （BB）公钥分发; （S104）索引生成; （S106）索引验证; （S108）陷阱门生成; （S110）搜索; （S112）追踪
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公开(公告)号：KR1020130049111A
公开(公告)日：2013-05-13
申请号：KR1020110114168
申请日：2011-11-03
Applicant: 한국전자통신연구원
CPC classification number: G06F17/30312
Abstract: PURPOSE: A forensic index method using distribution processing and a device thereof are provided to increase or decrease used resources corresponding to the amount of analyzed data, thereby implementing performance adjustment. CONSTITUTION: A division object data management unit(100) generates division object data by dividing indexing object data corresponding to division setting. A division index data generation unit(200) assigns the division object data to data processing units corresponding to the division setting. The division index data generation unit extracts an index by filtering the division object data. The division index data generation unit generates division index data including the index. An index database management unit(300) generates index database by merging the division index data. [Reference numerals] (100) Division object data management unit; (200) Division index data generation unit; (210,CC) Distribution storage unit; (230,DD) Filtering unit; (250,EE) Index extraction unit; (270,FF) Division index data generation unit; (300) Index database management unit; (AA) First data processing unit; (BB) n-th data processing unit
Abstract translation: 目的：提供使用分发处理的取证索引方法及其装置，以增加或减少与分析数据量相对应的使用资源，从而实现性能调整。 构成：分割对象数据管理单元（100）通过对与分割设置相对应的分度对象数据进行分割来生成分割对象数据。 分割索引数据生成部（200）将分割对象数据分配给与分割设定对应的数据处理部。 分割索引数据生成单元通过对分割对象数据进行滤波来提取索引。 分割指标数据生成部生成包含索引的分割指标数据。 索引数据库管理单元（300）通过合并分割索引数据来生成索引数据库。 （附图标记）（100）分割对象数据管理单元; （200）分类索引数据生成单元; （210，CC）分配存储单元; （230，DD）过滤单元; （250，EE）索引提取单元; （270，FF）分类索引数据生成单元; （300）索引数据库管理单位; （AA）第一数据处理单元; （BB）第n个数据处理单元
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公开(公告)号：KR1020130039174A
公开(公告)日：2013-04-19
申请号：KR1020110103670
申请日：2011-10-11
Applicant: 한국전자통신연구원
CPC classification number: H04L9/3255 , H04L2209/805
Abstract: PURPOSE: A lightweight group signature system with short signatures and a method thereof are provided to improve operation efficiency in signature generation, signature verification, and revocation on smart terminals, while providing security characteristics at a similar level with group signature mechanisms which provide controllable linkability. CONSTITUTION: A key issuing unit(110) initially generates a group public key as a trusted subject and generates a master issuing key(mik), a master opening key(mok), and a master linking key(mlk) corresponding thereto. The key issuing unit performs an interactive protocol, when receiving a join request from a new user device(140), and issues a signature key to the user device. A key revocation identifying unit(120) identifies whether revocation is performed using the updated revocation list and the master opening key when the revocation identification request is received from the signature verifying unit(150) and then, returns the identified results to the signature verifying unit. The key revocation identifying unit uses the master opening key to output the verification information for identifying a signer when a valid signature is given. A signer identification proof evaluating unit(160) evaluates the validity of the signer identification proof generated from a signature control unit(100). [Reference numerals] (100) Control unit; (110) Key issuing unit; (120) Key revocation identifying unit; (130) Signature connecting unit; (140) User device; (150) Signature verifying unit; (160) Signer identification proof evaluating unit; (AA) Generating a group public key; (BB) Master issuing key; (CC) Master identifying key; (DD) Master connecting key; (EE) Confirming signature connection information; (FF) Requesting confirmation of signature connection; (GG) Confirming key revocation; (HH) Requesting confirmation of key revocation; (II) Requesting identification of a signer; (JJ) Issuing a signature key; (KK) Generating a signature; (LL) Generating signer identification proof; (MM) Confirming signer identification proof;
Abstract translation: 目的：提供一种具有短签名的轻量级签名系统及其方法，以提高智能终端签名生成，签名验证和撤销操作的效率，同时提供与提供可控链路性的组签名机制相似的安全特性。 构成：密钥发布单元（110）最初生成作为可信对象的组公开密钥，并生成与其相对应的主发行密钥（mik），主开放密钥（mok）和主链接密钥（mlk）。 当从新用户设备（140）接收到加入请求时，密钥发布单元执行交互协议，并向用户设备发布签名密钥。 密钥吊销识别单元（120）在从签名验证单元（150）接收到撤销标识请求时，识别是否使用更新的撤销列表和主开放密钥执行撤销，然后将所识别的结果返回到签名验证单元 。 密钥吊销识别单元使用主开放密钥输出用于在给出有效签名时识别签名者的验证信息。 签名者识别确认评估单元（160）评估从签名控制单元（100）生成的签名者识别证明的有效性。 （附图标记）（100）控制单元; （110）发行单位; （120）钥匙撤销识别单元; （130）签名连接单元; （140）用户设备; （150）签名验证单元; （160）签名者识别证明评估单元; （AA）生成组公钥; （BB）主发卡钥匙; （CC）主识别键; （DD）主连接键; （EE）确认签名连接信息; （FF）请求确认签名连接; （GG）确认钥匙吊销; （HH）要求确认关键吊销; （二）要求签字人的身份证明; （JJ）签发签名密钥; （KK）生成签名; （LL）生成签名人身份证明; （MM）确认签署者身份证明;
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公开(公告)号：KR101225749B1
公开(公告)日：2013-01-24
申请号：KR1020080131702
申请日：2008-12-22
Applicant: 한국전자통신연구원
Abstract: 그래픽 프로세서를 이용한 패스워드 고속 탐색 장치가 개시된다. 패스워드 고속 탐색 장치는 암호화된 파일에서 패스워드 비교의 대상이 되는 데이터를 추출하고, 후보 패스워드들을 생성하는 중앙 처리 유닛; 및 추출된 패스워드 비교 대상 데이터와 생성된 후보 패스워드들을 파라미터로 하여 정당한 후보 패스워드를 탐색하는 그래픽 프로세서;를 포함한다. 이에 의해 사용자가 패스워드를 기억하지 못하거나 법 집행기관의 포렌식 수사과정에서 암호화된 문서를 복원하기 위해 필요한 패스워드를 고속을 찾을 수 있어 시간을 절약하게 된다.
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公开(公告)号：KR101190061B1
公开(公告)日：2012-10-11
申请号：KR1020080120412
申请日：2008-12-01
Applicant: 한국전자통신연구원
CPC classification number: G06F17/30979 , H04L9/0894 , H04L9/14
Abstract: The present invention relates to a method for data encryption and a method for data search using a conjunctive keyword and more particularly to, a method for searching data stored in a server by using a conjunctive keyword after storing an index table for the conjunctive keyword and encrypted data in the server. According to an embodiment of the present invention, since keywords and relevant data do not need to be searched one by one by performing a conjunctive keyword search by using a linked tree structure modifying a linked list, it is possible to perform a rapid and efficient conjunctive keyword search.
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Patent Agency Ranking
公开(公告)号：KR101175187B1
公开(公告)日：2012-08-20
申请号：KR1020080124119
申请日：2008-12-08
Applicant: 한국전자통신연구원
CPC classification number: G06F21/64
Abstract: 본발명은영상기록재생장치및 방법에관한것으로, 영상기록재생장치에연결된카메라를통해촬영된영상데이터에대해인증코드를부여하여암호화데이터를생성하고, 외부로부터영상기록재생장치로입력되는제어명령을감시하여, 영상기록재생장치에저장된영상데이터를저장또는삭제하도록하는제어명령을차단하도록한다. 본발명에따르면, 영상기록재생장치에저장된영상데이터에대해저장또는삭제하도록하는제어명령을차단함으로써, 영상기록재생장치에연결된카메라로부터촬영된영상데이터의조작이불가하도록함에따라영상데이터의위변조논란에서자유로워질수 있는이점이있다. 또한, 영상기록재생장치에저장된영상데이터를증거물로제시할경우, 원본의영상데이터에대해생성된인증데이터를이용하여증거물로제시된영상데이터및 해당영상데이터의정보에대한무결성을증명할수 있게된다.
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公开(公告)号：KR1020120044002A
公开(公告)日：2012-05-07
申请号：KR1020100105346
申请日：2010-10-27
Applicant: 한국전자통신연구원
IPC: G06F19/00
CPC classification number: G06F17/30864
Abstract: PURPOSE: A method for analyzing and validating data which are collected through the internet and a system thereof are provided to generate an index database for a webpage that a user visits and web mail content and search online data in real time. CONSTITUTION: An online data forensic server(210) collects and analyzes usage history information from a target device for data collection. The online data forensic server downloads and collects data in the Internet based on the usage history information and requests and receives a timing check token for the collected data. A timing check token issuing server(220) issues a timing check token for the collected data and provides the timing check token to the online data forensic server.
Abstract translation: 目的：提供一种用于分析和验证通过因特网及其系统收集的数据的方法，以生成用户访问的网页和网页邮件内容并实时搜索在线数据的索引数据库。 规定：在线数据取证服务器（210）从目标设备收集和分析使用历史信息以进行数据收集。 在线数据取证服务器根据使用历史信息和请求下载并收集Internet中的数据，并收集收集的数据的定时检查令牌。 定时检查令牌发行服务器（220）发布收集的数据的定时检查令牌，并向在线数据取证服务器提供定时检查令牌。
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公开(公告)号：KR101082024B1
公开(公告)日：2011-11-10
申请号：KR1020090021690
申请日：2009-03-13
Applicant: 한국전자통신연구원
Abstract: 디지털포렌식시스템에서증거이미지의색인관리기술에관한것이다. 색인관리장치는증거이미지를파일시스템구조의디지털자료로복원하는복원부, 복원된디지털자료에속하는파일들각각에고유의문서번호를할당하여문서번호사전으로관리하는문서번호사전관리부, 및복원된디지털자료의파일로부터색인어를추출하고추출된색인어별로색인어가속하는파일에할당된문서번호를지정하는색인수행부를포함하는색인부; 색인부에의한색인어별문서번호가지정된색인정보가저장되는색인저장부; 및색인데이터베이스를참조하여검색하고자하는색인어에지정된문서번호를확인하고, 확인된문서번호를가지고상기문서번호사전을참조하여해당파일을검색하는색인어검색부;를포함한다.
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公开(公告)号：KR1020110062869A
公开(公告)日：2011-06-10
申请号：KR1020090119722
申请日：2009-12-04
Applicant: 한국전자통신연구원
IPC: G09C1/00
Abstract: PURPOSE: A method for processing non-static quantum bit commitment is provided to secure the safety using a quantum entanglement distribution center and the non-locality of a quantum entanglement state. CONSTITUTION: A quantum entanglement organization measures the maximum entangled quantum state, and the quantum state determined by the measured value is provided to a transmitter(S201, S203, S205). The transmitter arbitrarily selects unitary transformation and applied the selected unitary transformation to the quantum state, and bit is transmitted and committed to a receiver(S207). The transmitter and the receiver are held(S209). After the transmitter discloses the information of unitary transformation, the quantum entanglement distribution organization discloses the information a measuring process and the measured value(S211, S213, S215).
Abstract translation: 目的：提供一种用于处理非静态量子位承诺的方法，以使用量子纠缠分布中心和量子纠缠状态的非局部性来确保安全性。 构成：量子纠缠组织测量最大纠缠量子态，将由测量值确定的量子态提供给发射机（S201，S203，S205）。 发射机任意选择单位变换，并将所选择的单位变换应用于量子态，并将位传送并提交给接收机（S207）。 保持发射机和接收机（S209）。 发射机公开了单一变换信息后，量子纠缠分布组织公开了信息的测量过程和测量值（S211，S213，S215）。
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公开(公告)号：KR1020110019223A
公开(公告)日：2011-02-25
申请号：KR1020090076841
申请日：2009-08-19
Applicant: 한국전자통신연구원
CPC classification number: G06F21/31 , G06F2221/2131
Abstract: PURPOSE: A deciphering password apparatus and a method thereof are provided to reduce time for deciphering by using a resource of a graphic processing unit. CONSTITUTION: A host control unit(112) generates candidate password for the password detection of the encrypted document file. A graphic processing unit(121) searches the allocated candidate passwords, and outputs detected password information, if a password of the document file is detected. Therefore, the host control unit perform deciphering in a short time without using an additional hardware resources by using the existing graphic processing unit.
Abstract translation: 目的：提供一种解密密码装置及其方法，以通过使用图形处理单元的资源来减少用于解密的时间。 构成：主机控制单元（112）产生密码检测加密文档文件的候选密码。 如果检测到文档文件的密码，则图形处理单元（121）搜索分配的候选密码，并输出检测到的密码信息。 因此，主机控制单元通过使用现有的图形处理单元在短时间内执行解密而不使用额外的硬件资源。
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