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公开(公告)号：KR1020080079886A
公开(公告)日：2008-09-02
申请号：KR1020070020481
申请日：2007-02-28
Applicant: 고려대학교 산학협력단
CPC classification number: G06K17/0029 , G06K17/0006 , H04L9/065
Abstract: A method for transmitting data safely in an RFID(Radio Frequency IDentification) system is provided to prevent forgery, information leakage, and tracking, use a PIN(Personal ID Number) safely, and use an EPCgloblal(Electronic Product Code) class-1 gen(generation)-2 application by using a session procedure of EPCgloblal(Electronic Product Code) class-1 gen-2 without any modification. A tag generates RT32, which is a pseudo random number, when a reader requests a query(203), and the tag calculates M1 by using RT32 and transmits M1 to the reader(206). The reader generates RR32, which is the new pseudo random number, and transmits acknowledgement for M1 and RR32 to the tag when M1 is received from the tag(209). The tag calculates M2, M3, and E by using RR32, and transmits PC, E, and CRC16 to the reader(215). The reader transmits E, M1, and RR32 to a backend server(218), and the backend server finds an EPC and transmits information corresponding to the tag to the reader when the EPC is found(224).
Abstract translation: 提供一种在RFID（射频识别）系统中安全地发送数据的方法，以防止伪造，信息泄露和跟踪，安全地使用PIN（个人ID号码），并使用EPCgloblal（电子产品代码）第1类 （一代）-2应用程序，使用EPCgloblal（电子产品代码）class-1 gen-2的会话过程，无需任何修改。 当读取器请求查询（203）时，标签生成伪随机数的RT32，并且标签通过使用RT32计算M1并将M1发送给读取器（206）。 读取器产生作为新的伪随机数的RR32，并且当从标签（209）接收到M1时，将M1和RR32的确认发送到标签。 标签通过使用RR32计算M2，M3和E，并将PC，E和CRC16传送给读卡器（215）。 读取器将E，M1和RR32发送到后端服务器（218），并且后端服务器发现EPC，并且当发现EPC时，向读取器发送与标签相对应的信息（224）。
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92.发明公开가시검증 가능한 키 교환 장치, 신뢰된 인증 기관을 이용한가시검증 가능한 키 교환 시스템, 그 방법 및 기록매체 失效用于人为可验证的认证密码协议的设备，使用密钥生成中心的人为可验证的认证密钥协议的方法和记录介质
公开(公告)号：KR1020080077500A
公开(公告)日：2008-08-25
申请号：KR1020070017124
申请日：2007-02-20
Applicant: 고려대학교 산학협력단
CPC classification number: H04L9/0838 , H04L9/0819 , H04L9/0869 , H04L9/12 , H04L9/14 , H04L9/3073 , H04L9/321
Abstract: A visibly verifiable key exchange apparatus, a visibly verifiable key exchange system using a reliable authentication agent, and a method and recording medium thereof are provided to secure the anonymity of a user ID by using a picture of the user as the user ID. A visibly verifiable key exchange method includes the steps of: transmitting an encrypted picture of a user to a terminal of the other user(310), and receiving the encrypted picture of the other user from the terminal of the other user(320); and if the user and the other user check the picture of a counterpart(330), applying a session key which is generated by using the pictures of the user and the other user to the communication between the terminal of the user and the terminal of the other user(340). The communication applying step includes the steps of: displaying the picture of the counterpart on the terminal of the user and the terminal of the other user; and if a check button is pushed, deciding that the user and the other user check the picture of the counterpart.
Abstract translation: 提供可视验证的密钥交换装置，使用可靠认证代理的可视验证的密钥交换系统及其方法和记录介质，以通过使用用户的图片作为用户ID来确保用户ID的匿名性。 可视验证的密钥交换方法包括以下步骤：将用户的加密图片发送到另一用户的终端（310），并从另一用户的终端接收另一用户的加密图片（320）; 并且如果用户和其他用户检查对方（330）的图片，则将通过使用用户和其他用户的图片生成的会话密钥应用于用户的终端与用户的终端之间的通信 其他用户（340）。 通信应用步骤包括以下步骤：在用户的终端和另一用户的终端上显示对方的图片; 并且如果按下检查按钮，则确定用户和其他用户检查对方的图片。
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公开(公告)号：KR1020080067550A
公开(公告)日：2008-07-21
申请号：KR1020070004984
申请日：2007-01-16
Applicant: 고려대학교 산학협력단
CPC classification number: H04L9/0838 , H04L9/0869 , H04L9/0877 , H04L9/14
Abstract: A method and a system for exchanging a key among three-party using a smart card and a recording medium thereof are provided to improve the security by performing an authentication and key exchange between a client and a client without exposing session key information, which is exchanged between the clients, to a server. A method for exchanging a key among three-party using a smart card includes the steps of: selecting a first random number and a second random number as a predetermined random number at a smart card of a source client, transmitting an encryption sentence having the second random number to a server, and transmitting the encryption sentence having the first random number to a target client(310); transmitting the encryption sentence having the second random number to the target client(320); selecting third and fourth random numbers as a predetermined random number in the smart card of the target client, decoding the encryption sentence having the second random number, calculating the second random number, calculating a session key using the second and fourth random numbers(330), and transmitting the encryption sentence having the third and fourth random numbers to the source client(340); and decoding the encryption sentence having the third and fourth random numbers in the smart card of the source client, calculating the session key using the second and fourth random numbers, and sharing the session key(350).
Abstract translation: 提供一种使用智能卡及其记录介质的三方交换密钥的方法和系统，以通过在客户端和客户端之间进行认证和密钥交换而不暴露被交换的会话密钥信息来提高安全性 在客户端之间，到服务器。 一种使用智能卡的三方交换密钥的方法包括以下步骤：在源客户端的智能卡处选择作为预定随机数的第一随机数和第二随机数，发送具有第二个 向服务器发送随机数，并将具有第一随机数的加密语句发送到目标客户端（310）; 将具有第二随机数的加密语句发送到目标客户端（320）; 在目标客户端的智能卡中选择第三和第四随机数作为预定的随机数，解码具有第二随机数的加密语句，计算第二随机数，使用第二和第四随机数（330）计算会话密钥， ，并将具有第三和第四随机数的加密语句发送到源客户端（340）; 解码在源客户机的智能卡中具有第三和第四随机数的加密语句，使用第二和第四随机数计算会话密钥，并共享会话密钥（350）。
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公开(公告)号：KR1020080035295A
公开(公告)日：2008-04-23
申请号：KR1020060101805
申请日：2006-10-19
Applicant: 고려대학교 산학협력단
CPC classification number: G06F17/30011 , G06F17/10 , G06F17/30477 , G06F17/30595 , G06F21/31 , H04L9/32
Abstract: A method for searching information from an encrypted database and a system thereof are provided to perform systematic information management and efficient information search via hierarchical database access rights as well as to prevent information from being illegally used or abused. A method for searching information from an encrypted database comprises the following several steps. If an authenticated user inputs a document and a representative keyword for the document, a client encrypts the inputted document via a document encryption key, encrypts the inputted representative keyword via a search key, generates an index, and transmits the encrypted document and index to a server(210). The client determines whether a user authenticated in an arbitrary client inputs a keyword for a document to be searched(220). If so, the client generates a trapdoor by using the inputted keyword and the search key of the user, and sends a query to a server(225). The server searches for the encrypted document by using the trapdoor and the index and transmits the searched document to the client(230).
Abstract translation: 提供了一种从加密数据库及其系统中搜索信息的方法，用于通过分层数据库访问权限执行系统信息管理和高效信息搜索，并防止信息被非法使用或滥用。 用于从加密数据库搜索信息的方法包括以下几个步骤。 如果经认证的用户输入文档的文档和代表关键字，则客户端通过文档加密密钥加密所输入的文档，经由搜索关键字对输入的代表关键字进行加密，生成索引，并将加密的文档和索引发送到 服务器（210）。 客户端确定在任意客户端中认证的用户是否输入要搜索的文档的关键字（220）。 如果是，则客户端通过使用输入的关键词和用户的搜索关键字生成一个陷门，并向服务器发送查询（225）。 服务器通过使用陷门和索引来搜索加密文档，并将搜索的文档发送给客户端（230）。
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公开(公告)号：KR100653361B1
公开(公告)日：2006-12-06
申请号：KR1020040040946
申请日：2004-06-04
Applicant: 고려대학교 산학협력단
IPC: G06Q50/26
Abstract: 본 발명은 투표결과의 반영 여부를 검증 가능한 전자투표 방법 및 시스템에 관한 것으로, 투표관리서버와 개표관리서버로 구성된 전자투표 시스템에서의 전자투표 방법에 있어서, 투표관리서버가 투표자명단을 생성하고, 개표관리서버가 투표관리서버로부터 전송받은 투표자명단에 포함되어 있는 투표자 수에 대응하는 티켓을 생성하는 투표사전단계; 개표관리서버가 투표자 단말기에 티켓을 암호화하여 전송하고, 투표관리서버가 투표자 단말기로부터 수신한 암호화된 티켓을 복호화한 티켓과 투표내용 및 개표검증비밀번호가 개표관리서버의 공개키로 암호화된 투표값을 수신하여 투표함에 저장하는 투표단계; 및 개표관리서버가 투표관리서버로부터 수신된 투표함에 저장된 암호화된 투표값을 개표관리서버의 비밀키로 복호화하여 투표내용을 집계하여 공개하고, 복호화된 투표내용과 개표검증비밀번호를 공개하는 개표단계로 구성된다. 이와같이 투표 결과에 대하여 검증하기 위한 검증 자료를 개표결과 공고시 함께 공개함으로써 개표결과에 대해 신뢰할 수 있는 전자투표 방법 및 시스템을 제공한다.
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Patent Agency Ranking
公开(公告)号：KR100642745B1
公开(公告)日：2006-11-10
申请号：KR1020050093485
申请日：2005-10-05
Applicant: 고려대학교 산학협력단
Abstract: An ID-based key agreement method and an apparatus thereof are provided to efficiently perform ID-based key agreement between two users(server and client) having different computing power. An ID-based key agreement method includes the steps of: transmitting IDu, X, and Y to a server by a client; receiving the IDu, X, and Y to certify the client, and transmitting z and tv when being certified to the client and generating a session key(sk) by the server; and receiving the z, tv from the server to certify the server and generating a session key identical to the session key of the server by the client when the server is certified.
Abstract translation: 提供基于ID的密钥协商方法及其装置，以有效地执行具有不同计算能力的两个用户（服务器和客户端）之间的基于ID的密钥协商。 基于ID的密钥协商方法包括以下步骤：由客户端将IDu，X和Y发送给服务器; 接收IDu，X和Y以认证客户端，并且在被客户端认证时传输z和tv并由服务器生成会话密钥（sk）; 以及从服务器接收z，tv以认证服务器，并且当服务器被认证时，由客户端生成与服务器的会话密钥相同的会话密钥。
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公开(公告)号：KR101992832B1
公开(公告)日：2019-06-26
申请号：KR1020170091454
申请日：2017-07-19
Applicant: 고려대학교 산학협력단
IPC: G01S7/537
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公开(公告)号：KR101783158B1
公开(公告)日：2017-09-28
申请号：KR1020160178139
申请日：2016-12-23
Applicant: 고려대학교 산학협력단
Abstract: 본발명은, 나노파이버열전발전모듈을제조하는방법으로서, 기판상에복수개의제 1 전극및 제 2 전극을상호이격시켜대향교번배치되도록형성하는전극형성단계와, 일단이상기제 1 전극에그리고타단이대향하는제 2 전극에연결되도록, n 타입이나 p 타입의반도체를구비하는제 1 나노파이버를배치시키는제 1 나노파이버배치단계와, 일단이상기제 1 전극에그리고타단이대향하는다른제 2 전극에연결되도록, 다른타입의반도체를구비하는제 2 나노파이버를배치시키는제 2 나노파이버배치단계를포함하는것을특징으로하는나노파이버열전발전모듈제조방법및 이로부터제조되는나노파이버열전발전모듈및 이를위한나노파이버전기방사장치를제공한다.
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公开(公告)号：KR1020170090008A
公开(公告)日：2017-08-07
申请号：KR1020160010117
申请日：2016-01-27
Applicant: 고려대학교 산학협력단
Abstract: 자동차개방형 PnP형플랫폼에서의플러그인디바이스를인증하는장치및 방법이개시된다. 플러그인디바이스인증장치를이용하여플러그인디바이스를인증하는방법은상기플러그인디바이스인증장치가랜덤값을생성하고, 상기랜덤값을상기플러그인디바이스에전송하는단계, 상기플러그인디바이스인증장치가상기플러그인디바이스로부터암호화된랜덤값을수신하는단계, 상기플러그인디바이스인증장치가제조사서버로부터수신한제1 대칭키를이용하여상기암호화된랜덤값을복호화하여복호화된랜덤값을생성하는단계, 및상기복호화된랜덤값과상기랜덤값이동일한경우, 상기플러그인디바이스를인증하는단계를포함한다.
Abstract translation: 公开了一种用于认证汽车开放PnP型平台中的插入式设备的装置和方法。 与插入式设备认证装置认证插件装置的方法产生的所述插入式设备认证装置中的随机值和所述随机值发送到所述的插件的装置，该插件设备认证，该装置从所述插接装置的加密 所述方法包括：接收随机值;使用从制造商服务器接收的第一对称密钥来解密所述经加密的随机值以生成经解密的随机值; 如果随机值相同，则验证插件设备。
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