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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：KR1020140077701A
公开(公告)日：2014-06-24
申请号：KR1020120146779
申请日：2012-12-14
Applicant: 한국전자통신연구원 , 고려대학교 산학협력단
Abstract: The present invention relates to a high-speed cube computation module. The high-speed cube computation module according to an embodiment of the present invention conducts cube computation which is the basis of the pairing encryption computation to accelerate the speed of the pairing encryption algorithm computation in a limited implementation environment such as a ubiquitous computing environment. When the cube computation module is implemented in a hardware or software environment, the cube computation module can shorten the time required for the cube computation as low as 1/7.
Abstract translation: 本发明涉及一种高速立方体计算模块。 根据本发明的实施例的高速立方体计算模块进行立方体计算，其是配对加密计算的基础，以在诸如无处不在的计算环境的有限实施环境中加速配对加密算法计算的速度。 当立方体计算模块在硬件或软件环境中实现时，立方体计算模块可以将多维数据集计算所需的时间缩短到1/7。
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公开(公告)号：KR1020140076009A
公开(公告)日：2014-06-20
申请号：KR1020120144050
申请日：2012-12-12
Applicant: 한국전자통신연구원 , 고려대학교 산학협력단
IPC: H04L9/30
Abstract: An ID-based ring signature apparatus with high a counterfeit-proof function according to an embodiment of the present invention includes: a parameter generator to generate a security parameter, a master secret key of a server using lattice configuration information, and a public parameter of the signature apparatus; a secret key generator to generate a participant secret key using the generated master secret key and public parameter, and public Identifications (IDs) of participants participating in ring signature; a signature generator to generate a signature using a secret key of a signer among the participants, an ID group (ring) and a participant message optionally configured by the signer; and a signature verification unit to verify whether the generated signature is a reasonable signature with respect to the participant ID group and the participant message to output a true or false result, and the ID-based ring signature apparatus satisfies high counterfeit-proof performance.
Abstract translation: 根据本发明实施例的具有高防伪功能的基于ID的环形签名装置包括：生成安全参数的参数生成器，使用格子配置信息的服务器的主密钥，以及公共参数 签名装置; 使用所生成的主秘密密钥和公共参数来生成参与者秘密密钥的秘密密钥生成器和参与环签名的参与者的公共识别（ID）; 签名生成器，用于使用所述参与者中的签名者的秘密密钥生成签名，ID组（环）和由所述签名者可选地配置的参与者消息; 以及签名验证单元，用于验证所生成的签名是否是关于参与者ID组和参与者消息的合理签名，以输出真实或错误的结果，并且基于ID的环形签名设备满足高防伪性能。
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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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Patent Agency Ranking
公开(公告)号：KR1020170122048A
公开(公告)日：2017-11-03
申请号：KR1020160051127
申请日：2016-04-26
Applicant: 한국전자통신연구원
IPC: G06F17/30
Abstract: 블룸필터와이진트리를이용한암호데이터검색시스템및 그방법이개시된다. 검색인덱스생성방법은암호데이터의개수및 상기암호데이터에포함된키워드들의개수에따라이진트리의레벨을결정하는단계; 상기이진트리의레벨별로서로다른해시함수들을할당하는단계; 상기이진트리의최하위레벨에대응하는리프노드들마다서로다른암호데이터를할당하는단계; 상기이진트리의각 레벨에할당된해시함수와상기암호데이터에포함된키워드및 암호데이터가할당된리프노드의식별정보를사용하여상기이진트리의루트노드에서상기리프노드까지의경로에포함된중간노드들각각에대응하는블룸필터들을생성하는단계: 및상기암호데이터를검색하기위한이진트리구조의검색인덱스의루트노드, 리프노드및 중간노드들각각에상기블룸필터들을추가하는단계를포함할수 있다.
Abstract translation: 公开了一种使用布隆过滤器和二叉树的密码数据检索系统及其方法。 一种生成搜索索引的方法，包括：根据密文数据的个数和密文数据中包含的关键词的个数，确定二叉树的等级; 为二叉树的每个级别分配不同的散列函数; 将不同的密码数据分配给与二叉树的最低级别相对应的叶节点; 并且使用分配给二进制树的每个级别的散列函数和分配了密码数据中包括的关键字和密码数据的叶节点，分配二叉树的叶节点的叶节点， 生成对应于每个节点的布隆过滤器;以及将布隆过滤器添加到二叉树结构的搜索索引的根节点，叶节点和中间节点中的每一个，以检索密码数据 。
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公开(公告)号：KR1020170081504A
公开(公告)日：2017-07-12
申请号：KR1020160000623
申请日：2016-01-04
Applicant: 한국전자통신연구원
CPC classification number: G06F17/30371 , G06F17/30489 , H04L9/0861 , H04L9/0894 , H04L9/3242 , H04L63/0428 , H04L2209/24
Abstract: 클라이언트에서는평문데이터를이용하여암호키를생성하고, 암호키를이용하여첫 번째태그를생성하며, 암호키와평문데이터를암호화하여암호데이터를생성하고, 암호데이터의중복여부를확인하기위해상기첫 번째태그를서버로전송하며, 첫번째태그를전송한후에서버로부터의암호데이터요구에따라서암호데이터를서버로전송한다.
Abstract translation: 客户端使用明文数据生成密码密钥，使用密码密钥生成第一标签，通过加密密码密钥和明文数据生成密码数据，并检查第一标签 Th标签发送给服务器，在发送第一标签之后，密码数据被发送到服务器以响应来自服务器的加密数据请求。
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公开(公告)号：KR1020120070874A
公开(公告)日：2012-07-02
申请号：KR1020100132384
申请日：2010-12-22
Applicant: 한국전자통신연구원
CPC classification number: H04L9/002 , H04L9/0662 , G06F21/602 , G06F17/30312
Abstract: PURPOSE: A sequence preserving encoding apparatus and a method thereof are provided to perform encoding/decoding operation by using a pseudo-random number generating unit. CONSTITUTION: An initializing unit(110) offers an interface capable of setting up a pseudo random number generating unit to a interface. A reference point generating unit generates a reference point about a plain text by applying a secret key to the pseudo random number generating unit. A plain text controlling unit(140) controls the size of the plain text according to the encoding sentence.
Abstract translation: 目的：提供一种序列保存编码装置及其方法，用于通过使用伪随机数生成单元进行编码/解码操作。 构成：初始化单元（110）提供能够在接口上建立伪随机数生成单元的接口。 参考点生成单元通过对伪随机数生成单元应用秘密密钥来生成关于明文的参考点。 明文控制单元（140）根据编码语句控制明文的大小。
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公开(公告)号：KR101041568B1
公开(公告)日：2011-06-15
申请号：KR1020080128125
申请日：2008-12-16
Applicant: 한국전자통신연구원
Abstract: 다수의 데이터베이스에 저장된 보호가 필요한 정보들의 평균값 산출 방법에 관한 것으로, 참여 사용자 데이터베이스에 저장된 데이터에 관한 비밀 정보를 암호화하여 다른 참여 사용자에게 전송하는 단계; 상기 다른 참여 사용자는 상기 수신되는 암호화 정보에 자신의 비밀 정보를 추가하여 갱신된 암호화 정보를 또 다른 참여 사용자에게 전송하는 단계; 및 최초 참여 사용자는 모든 참여 사용자를 거쳐 갱신된 암호화 정보가 수신되면, 상기 수신되는 갱신된 암호화 정보에 기초하여 전체 참여 사용자 데이터베이스에 저장된 데이터의 평균값을 산출하는 단계;를 포함하는 것을 특징으로 하는 다수의 데이터베이스에 저장된 보호가 필요한 정보들의 평균값 산출 방법에 의해 다수의 참여자가 자신의 비밀 정보를 유출하지 않더라도 다수 참여자가 보유한 데이터베이스 정보들의 정보에 대한 평균값을 산출할 수 있다는 효과가 도출된다.
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公开(公告)号：KR1020100069447A
公开(公告)日：2010-06-24
申请号：KR1020080128125
申请日：2008-12-16
Applicant: 한국전자통신연구원
CPC classification number: G06F21/6218
Abstract: PURPOSE: A method for calculating an average value of a data saved multiple database is provided to enable plural users to calculate the average value of information stored at a database by developing an SMC(Secure Multiparty Computation) protocol which excludes an OT(Oblivious Transfer). CONSTITUTION: Secret information stored at a joint user database is encoded and transmitted to other participants(S210). The other participants transmits the encoded information to another participants(S250), wherein the encoded information is updated by adding its secrete information to the previous encoded information. When the updated encoded information is received passing through all participants, an initial user calculates the average value of the data stored at a total participant database based on the updated encoded information(S280).
Abstract translation: 目的：提供一种用于计算数据保存多个数据库的平均值的方法，以使多个用户能够通过开发一种不包括OT（Oblivious Transfer）的SMC（安全多方计算）协议来计算存储在数据库中的信息的平均值， 。 构成：存储在联合用户数据库中的秘密信息被编码并传送给其他参与者（S210）。 其他参与者将编码信息发送给另一参与者（S250），其中通过将其分离信息加到先前的编码信息来更新编码信息。 当通过所有参与者接收更新的编码信息时，初始用户基于更新的编码信息计算存储在总参与者数据库中的数据的平均值（S280）。
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