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公开(公告)号：KR101209214B1
公开(公告)日：2012-12-06
申请号：KR1020080124848
申请日：2008-12-09
Applicant: 한국전자통신연구원
Abstract: 본발명은세션상태추적을통한서비스거부공격방어장치및 방법에관한것으로서, 본서비스거부공격방어장치는, 클라이언트와서버간의패킷전송에따라변경되는세션의상태를추적하여특정상태의세션의수가미리설정된임계치를초과하면, DoS(Denial-of-Service)/DDoS(Distributed Denial-of-service) 공격으로판단하는공격탐지엔진과, 공격탐지엔진에서 DoS/DDoS 공격을탐지하면, 클라이언트로부터새로운패킷의입력시새로운패킷에대응되는세션이이미존재하는지여부에따라패킷의드롭여부를결정하여 DoS/DDoS 공격에대응하는대응엔진을포함한다. 이에의해, 기가급네트워크환경에서선로속도를보장하면서실시간으로세션상태를추적하여 DoS/DDoS 공격발생을신속하게탐지하고, 세션상태에따라패킷을처리하여효과적으로 DoS/DDoS 공격에대응할수 있다.
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公开(公告)号：KR1020120119423A
公开(公告)日：2012-10-31
申请号：KR1020110037330
申请日：2011-04-21
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A device and method for selecting a preferred monitored object and an object monitoring device are provided to deliver the collision possibility between ships to a controller by automatically predicting a credible accident scenario. CONSTITUTION: A route estimation unit(310) estimates a traveling route of a designated first vehicle. A scenario prediction unit predicts a credible accident scenario on the traveling route of the first vehicle based on the traveling route of a second vehicle. A risk calculation unit calculates a first risk related to the accident possibility of each vehicle. A preferred monitored object selection unit(360) selects a preferred monitored object among the whole vehicles In which the first risk is calculated. [Reference numerals] (310) Route estimation unit; (311) Radar; (312) AIS; (320) Present condition estimation unit; (330) History information analyzing unit; (340) Risk analyses and collision risk comprehensive estimation unit; (350) Effect/damage estimation unit for each area and each object; (351) Ship DB; (360) Preferred monitored object selection unit; (370) Dynamic risk calculation unit; (380) Decision-making support data generator
Abstract translation: 目的：提供一种用于选择优选监控对象和对象监视设备的设备和方法，用于通过自动预测可信的事故场景来将船舶之间的碰撞可能性提供给控制器。 构成：路线估计单元（310）估计指定的第一车辆的行驶路线。 场景预测单元基于第二车辆的行驶路线预测第一车辆的行驶路线上的可信的事故情况。 风险计算单元计算与每个车辆的事故可能性相关的第一风险。 优选的被监视对象选择单元（360）选择计算第一风险的整个车辆中的优选监视对象。 （附图标记）（310）路线估计单元; （311）雷达; （312）AIS; （320）现状估计单元; （330）历史信息分析单元; （340）风险分析与碰撞风险综合评估单位; （350）每个区域和每个物体的效应/损伤估计单元; （351）船舶数据库; （360）优选的监视对象选择单元; （370）动态风险计算单位; （380）决策支持数据生成器
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公开(公告)号：KR101174058B1
公开(公告)日：2012-08-16
申请号：KR1020080129287
申请日：2008-12-18
Applicant: 한국전자통신연구원
CPC classification number: G06F21/6227 , H04L9/00
Abstract: 암호화된데이터의저장및 검색방법에관한것으로, 데이터베이스에저장된데이터를암호화하는단계; 상기저장된데이터영역전체를버킷영역단위로분할하여, 분할된버킷영역각각에대한인덱스를할당하는단계; 상기암호화된데이터가속한버킷영역에서의순서정보를파악하는단계; 및상기암호화된데이터, 상기암호화된데이터가속한버킷영역의인덱스정보및 상기파악된순서정보를외부서버에저장하는단계;를포함하는것을특징으로하는데이터베이스의암호화된데이터저장방법에의해사용자의중요데이터베이스를외부서버에저장하는경우에데이터베이스에대한보안성을더욱강화함과동시에효율성을높일수 있는효과가있다.
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公开(公告)号：KR1020120058874A
公开(公告)日：2012-06-08
申请号：KR1020100120385
申请日：2010-11-30
Applicant: 한국전자통신연구원
CPC classification number: G06K9/00718 , G06F17/30784
Abstract: PURPOSE: A system for detecting a global harmful video and a method thereof are provided to globally determine whether a moving picture is harmful based on a global harmfulness determination policy and appearance information of an input harmful segment. CONSTITUTION: A global video determination policy generating block(510) analyzes appearance information of a learning harmful segment. The global video determination policy generating block generates a global harmfulness determination policy. A global video determination policy execution block(520) analyzes appearance information of an input harmful segment. The global video determination policy execution block determines whether a global video is harmful based on the appearance information and the global harmfulness determination policy of the input harmful segment.
Abstract translation: 目的：提供一种用于检测全球有害视频的系统及其方法，用于根据全局有害性确定策略和输入的有害分段的外观信息全局确定运动图像是否有害。 构成：全局视频确定策略生成块（510）分析学习有害片段的外观信息。 全局视频确定策略生成块产生全局有害性确定策略。 全局视频确定策略执行块（520）分析输入的有害分段的外观信息。 全局视频确定策略执行块基于输入的有害段的外观信息和全局有害性确定策略确定全局视频是否有害。
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公开(公告)号：KR101086046B1
公开(公告)日：2011-11-22
申请号：KR1020090019873
申请日：2009-03-09
Applicant: 한국전자통신연구원
Abstract: 본 발명은 유한 확장체에서 제곱근 계산 장치 및 방법에 관한 것이다.
유한 확장체 (여기서 p는 소수, k는 홀수)에서 임의의 소수 p에 대해 제곱근을 효율적으로 계산하기 위하여 지수승 계산을 위한 표현법을 새로 정의함으로써, 지수 연산에 필요한 연산량을 줄일 수 있어 향상된 알고리즘의 효율성을 가질 수 있다.
유한 확장체, 제곱근, 지수승, 임의의 소수, Tonelli-Shanks-
Patent Agency Ranking
公开(公告)号：KR101058938B1
公开(公告)日：2011-08-23
申请号：KR1020090022305
申请日：2009-03-16
Applicant: 한국전자통신연구원
Abstract: 비밀키 생성 장치는 모바일 RFID 단말의 정보를 이용하여 비밀키를 생성하고, 이를 물품에 장착된 RFID 태그로 전송하며, RFID 태그로부터 비밀키를 이용하여 암호화된 상기 물품의 유일 식별자를 수신한 후에 생성한 비밀키를 이용하여 암호화된 물품의 유일 식별자를 복원한다. 이렇게 하면, 사용자의 개입을 최소화한 상태에서 모바일 RFID 단말의 사용자의 개인 프라이버시를 보호해 줄 수 있다.
모바일 RFID, 비밀키, RFID 태그, RFID 리더-
公开(公告)号：KR1020110070767A
公开(公告)日：2011-06-24
申请号：KR1020100108730
申请日：2010-11-03
Applicant: 한국전자통신연구원
CPC classification number: H04L41/50 , H04L67/30 , H04N2201/323
Abstract: PURPOSE: A network-based remote forensic system is provided to easily use evidence data with the accumulation of collected evidence data. CONSTITUTION: One or more remote terminals(240) interlink an evidence device(110) in a remote place. The remote terminal performs forensic for the evidence device with a virtual forensic tool. An investigation center system(200) is connected through a wide area network to the remote terminal. The investigation center system offers the virtual forensic tool. The investigation center system processes the requirement of the remote terminal.
Abstract translation: 目的：提供基于网络的远程法医系统，以便利用收集的证据数据的积累方便地使用证据数据。 构成：一个或多个远程终端（240）将证据设备（110）互连在远程位置。 远程终端使用虚拟取证工具对证据设备进行取证。 调查中心系统（200）通过广域网连接到远程终端。 调查中心系统提供虚拟法医工具。 调查中心系统处理远程终端的要求。
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公开(公告)号：KR1020110066669A
公开(公告)日：2011-06-17
申请号：KR1020090123413
申请日：2009-12-11
Applicant: 한국전자통신연구원
IPC: H04N5/913
CPC classification number: H04N21/8358 , G06T1/0028 , G06T1/005 , G06T2201/0065
Abstract: PURPOSE: A video watermark insertion device, system and method for evaluating a watermarking algorithm using the same are provided to quantitively measure toughness performance of an watermark algorithm. CONSTITUTION: A watermark inserting unit(110) inserts a watermark including user information into a video content. According to deformation kind and intensity of video, a video transforming unit(120) performs video deformation about the content. A watermark detecting unit(130) detects watermark from a watermarked content. The water mark detecting unit outputs roughness information of a watermarking algorithm.
Abstract translation: 目的：提供一种用于评估使用其的水印算法的视频水印插入装置，系统和方法，以定量测量水印算法的韧性。 构成：水印插入单元（110）将包含用户信息的水印插入到视频内容中。 根据视频的变形类型和强度，视频变换单元（120）对内容进行视频变形。 水印检测单元（130）从加水印的内容中检测水印。 水印检测单元输出水印算法的粗糙度信息。
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公开(公告)号：KR1020110057447A
公开(公告)日：2011-06-01
申请号：KR1020090113858
申请日：2009-11-24
Applicant: 한국전자통신연구원
CPC classification number: H04N21/2347 , H04N21/26613
Abstract: PURPOSE: A random number based block shuffling device for encoding a video is provided to prevent an illegal video data user from acquiring useful information. CONSTITUTION: A random number and key management unit(110) stores a shared key between a video encoding unit and a decoding unit. The random number and the key manager create the random number through the key. A block replacement processing unit(120) creates the classification information as a replacement group. The replacement rule is created using the generated random number. The block replacement processing unit changes the location of the constitution element by the generated replacement rule.
Abstract translation: 目的：提供一种用于编码视频的基于随机数的块混洗设备，以防止非法视频数据用户获取有用的信息。 构成：随机数和密钥管理单元（110）在视频编码单元和解码单元之间存储共享密钥。 随机数和密钥管理器通过密钥创建随机数。 块替换处理单元（120）创建分类信息作为替换组。 替换规则是使用生成的随机数创建的。 块替换处理单元通过生成的替换规则改变构成要素的位置。
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公开(公告)号：KR1020110048349A
公开(公告)日：2011-05-11
申请号：KR1020090105112
申请日：2009-11-02
Applicant: 한국전자통신연구원
CPC classification number: H04L63/1416 , H04L63/1458 , H04L67/02
Abstract: PURPOSE: A method for detecting a service denial attack by low traffic and apparatus thereof are provided to accurately determine a service denial attack by using incomplete GET method request packet. CONSTITUTION: If one GET require-message is longer than an MSS(Maximum Segment Size) value in a TCP(Transmission Control Protocol), a client partitions one GET require-message according to MSS. The client counts the number of packets that are transmitted to a server(S522). The client calculates the maximum number of the GET request packets that are transmitted to the server. The client determines service denial attack of the GET require-message.
Abstract translation: 目的：提供一种用于检测低业务的服务拒绝攻击的方法及其装置，以通过使用不完整的GET方法请求分组来准确地确定服务拒绝攻击。 规定：如果一个GET要求消息比TCP（传输控制协议）中的MSS（最大段大小）值更长，则客户端根据MSS分配一个GET要求消息。 客户端计算发送到服务器的数据包数（S522）。 客户端计算发送到服务器的GET请求数据包的最大数量。 客户端确定GET require-message的服务拒绝攻击。
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