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公开(公告)号：KR1020130068873A
公开(公告)日：2013-06-26
申请号：KR1020110136292
申请日：2011-12-16
Applicant: 고려대학교 산학협력단
Abstract: PURPOSE: A data anonymity providing apparatus and a method are provided to offer data anonymity transmitted in a smart grid environment. CONSTITUTION: A communications part(410) receives meter-reading data in a smart grid environment and provides the meter-reading data to a power control system. A storage part(430) stores the meter-reading data and the anonymity information, and controls the data for anonymity as well. A user input part(450) generates and outputs key information corresponding to a key inputted by a user. A display part(440) provides characters or figures in a form capable of being recognized by the user when setting up an anonymity level and transmits the reprocessed data through the communications part. [Reference numerals] (10) Wireless network/internal network; (100) Power terminal device; (200) Smart meter; (300) Meter data management device; (400) Anonymity management server; (500) Power control system
Abstract translation: 目的：提供数据匿名提供装置和方法来提供在智能电网环境中传输的匿名数据。 构成：通信部件（410）在智能电网环境中接收仪表读取数据，并将电表读取数据提供给功率控制系统。 存储部（430）存储读表数据和匿名信息，并且控制匿名数据。 用户输入部分（450）生成并输出与由用户输入的键对应的键信息。 显示部分（440）提供能够在建立匿名级别时被用户识别的形式的字符或图形，并且通过通信部分发送再处理的数据。 （附图标记）（10）无线网络/内部网络; （100）电源终端设备; （200）智能仪表; （300）仪表数据管理装置; （400）匿名管理服务器; （500）电源控制系统
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公开(公告)号：KR1020130053839A
公开(公告)日：2013-05-24
申请号：KR1020110119516
申请日：2011-11-16
Applicant: 고려대학교 산학협력단
IPC: H04N7/167
CPC classification number: H04N7/167 , H04N7/161 , H04N19/134
Abstract: PURPOSE: A broadcast method based on a lattice is provided to generate and set a public key and a secret key of each participant based on the lattice, thereby coding a plain text based on the public key and decoding the coded plain text by using the secret key. CONSTITUTION: Each participant group generates and sets a public key and a secret key through an algorithm(S210). When one or more participants request data transmission to a temporary participant by using the public key, the temporary participant transmits data by using a transmission device(S212,S214). The transmission device generates a coding text for the data by using the public key and transmits the coding text with a broadcast method. The participant group decodes the coding text by using the secret key(S218). [Reference numerals] (AA) Start; (BB) End; (S210) Set a public key and a secret key through a trap door sampling algorithm; (S212) Receive plain text transmission request; (S214) Encode a plain text using the public key and transmit the same in a broadcast method; (S216) Receive a random coded message; (S218) Generate a plain text through decoding using the secret key; (S220) Plain text satisfies first and second conditions?; (S222) Output the plain text; (S224) Output ㅗ
Abstract translation: 目的：提供一种基于格点的广播方法，以基于格点生成和设置每个参与者的公开密钥和秘密密钥，从而基于公开密钥对纯文本进行编码，并通过使用秘密解码编码的纯文本 键。 构成：每个参与者组通过算法生成和设置公钥和秘密密钥（S210）。 当一个或多个参与者通过使用公共密钥向临时参与者请求数据传输时，临时参与者通过使用发送设备发送数据（S212，S214）。 发送装置利用公开密钥生成数据的编码文本，并以广播方式发送编码文本。 参与者组通过使用秘密密钥解码编码文本（S218）。 （附图标记）（AA）开始; （BB）结束; （S210）通过陷阱门采样算法设置公钥和秘密密钥; （S212）接收纯文本传输请求; （S214）使用公共密钥对纯文本进行编码，并以广播方式发送; （S216）接收随机编码消息; （S218）使用秘密密钥通过解码生成纯文本; （S220）纯文本满足第一和第二条件？ （S222）输出纯文本; （S224）输出ㅗ
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公开(公告)号：KR1020120065818A
公开(公告)日：2012-06-21
申请号：KR1020100127131
申请日：2010-12-13
Applicant: 한국전자통신연구원 , 고려대학교 산학협력단
Abstract: PURPOSE: An ID(identity)-based proxy signature from lattices is provided to increase security for a quantum algorithm and calculation efficiency by performing proxy signature through its own secret key. CONSTITUTION: A KGC(Key Generation Center)(100) generates a signature key used for ID(identity)-based proxy signature. The KGC provides a signature key of a signer to the signer(102). The KGC provides the signature key, in other word, a secret key corresponding to each ID of an individual, to each individual including a proxy signer(104). The signer generates a proxy statement(108) by using its own signature key. The proxy statement of the signer is transmitted to the proxy signer through a communication network. The proxy signer generates a proxy signature(110) by using the proxy statement and the signature key of the proxy signer.
Abstract translation: 目的：提供来自格子的基于身份（身份）的代理签名，以通过其自己的秘密密钥执行代理签名来提高量子算法的安全性和计算效率。 规定：KGC（密钥生成中心）（100）生成用于基于ID（身份）的代理签名的签名密钥。 KGC向签名者（102）提供签名者的签名密钥。 KGC向包括代理签名者（104）的每个人提供签名密钥，换句话说，提供对应于个人的每个ID的密钥。 签名者通过使用自己的签名密钥生成代理语句（108）。 签署人的代理声明通过通信网络传送给代理签名者。 代理签名者通过使用代理签名者的代理语句和签名密钥生成代理签名（110）。
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公开(公告)号：KR101140576B1
公开(公告)日：2012-05-02
申请号：KR1020100063390
申请日：2010-07-01
Applicant: 고려대학교 산학협력단
Abstract: PURPOSE: A search system between multi users for an encryption document and a method thereof are provided to search and transmit an encryption document related to a keyword of a user and decrypt the document by an encryption key, thereby preventing data tapping. CONSTITUTION: A user list managing unit(210) manages a second secret key including the identification information of a user and a first secret key. A key generating unit(230) generates a first generation key for generating a document encryption key and a second generation key for generating a keyword index generation key using a random number and the second secret key received from a user terminal. A data searching unit(240) generates the keyword index generation key based on a query value and the second secret key received from the user terminal and searches an encrypted document corresponding to the keyword index generation key.
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公开(公告)号：KR101095068B1
公开(公告)日：2011-12-20
申请号：KR1020090123856
申请日：2009-12-14
Applicant: 고려대학교 산학협력단
Abstract: 데이터 마이닝 시스템은, 원본 데이터 베이스에 설정된 개수의 더미 데이터를 추가하여 변형 데이터 베이스를 생성하고, 변형 데이터 베이스를 데이터 마이닝 장치에 제공하는 사용자 장치 및 설정된 클러스터링 조건에 따라 변형 데이터 베이스를 클러스터링하는 데이터 마이닝 장치를 포함한다. 이와 같은, 데이터 마이닝 시스템은 간단한 연산만으로도 원본 데이터 베이스에 대한 프라이버시를 보존하면서도 동일한 데이터 마이닝 결과를 얻을 수 있다.
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Patent Agency Ranking
公开(公告)号：KR101082917B1
公开(公告)日：2011-11-11
申请号：KR1020090086625
申请日：2009-09-14
Applicant: 고려대학교 산학협력단
Abstract: 본명세서에서개시하는원격컴퓨팅환경에서사용자데이터의무결성검증방법은 (a)사용자데이터의암호문과상기사용자데이터에대한블룸필터(Bloom filter)를원격컴퓨팅서비스를제공하는서버의스토리지(storage)에저장시키는단계; (b)사용자로부터자신의사용자데이터에대한다운로드요청이있는경우, 상기요청된사용자데이터에상응하는암호문의일부와블룸필터의일부를상기스토리지로부터호출하여상기사용자에게전송하는단계; 및 (c)상기전송받은일부암호문이상기전송받은일부블룸필터에속하는지판단하여상기다운로드요청한사용자데이터의무결성(integrity)을검증하는단계를포함하여본 방법발명의과제를해결한다.
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公开(公告)号：KR101782792B1
公开(公告)日：2017-10-24
申请号：KR1020150181126
申请日：2015-12-17
Applicant: 고려대학교 산학협력단
Abstract: 인증및 키공유방법이개시된다. 상기인증및 키공유방법은서버에서수행되고, 단말기로부터등록요청메시지를수신하는단계, 상기단말기의사용자를등록하는단계, 상기단말기로부터인증요청메시지를수신하는단계, 상기사용자를인증하고세션키를생성하는단계, 및상기단말기로응답값을송신하는단계를포함한다.
Abstract translation: 公开了一种认证和密钥共享方法。 认证和密钥共享方法在服务器中执行，并且包括：从终端接收注册请求消息;注册终端的用户;从终端接收认证请求消息;认证用户; 并将响应值发送给终端。
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