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公开(公告)号：KR1020170103323A
公开(公告)日：2017-09-13
申请号：KR1020160025954
申请日：2016-03-03
Applicant: 한국전자통신연구원
Abstract: 준동형암호화기법을이용한경매서비스제공장치및 방법이개시된다. 본발명에따른준동형암호화기법을이용한경매서비스제공장치는, 복수의입찰자단말기들로부터, 준동형암호화기법으로암호화된복수의입찰정보들을수신하는입찰정보수신부, 수신된상기복수의입찰정보들을정렬하여, 경매의종류에상응하는입찰정보를낙찰정보로선택하는낙찰정보선택부, 그리고암호화된상기낙찰정보를낙찰정보제공장치로전송하는낙찰정보전송부를포함하며, 상기입찰정보는, 입찰금액및 입찰자식별정보를포함하고, 상기낙찰정보제공장치는, 비밀키를이용하여상기낙찰정보를복원하고, 복원된상기낙찰정보에상응하는낙찰금액및 낙찰자를출력하는것을특징으로한다.
Abstract translation: 公开了一种使用扰动加密技术提供拍卖服务的设备和方法。 使用同态加密方式提供了根据本发明装置的拍卖服务，从多个投标者终端，投标信息接收单元，用于接收加密多路拍卖信息作为同态加密方式，排序所接收的多个投标的 并且，它包括的投标信息部分发送，出价信息将被发送到中标信息选择单元，和中标加密的投标信息，用于选择对应于拍卖出价信息的类型，出价金额的投标信息提供装置中的信息，和 并且中标人信息提供设备使用秘密密钥恢复中标信息，并且输出与中标投标信息和中标人相对应的中标金额。
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公开(公告)号：KR1020170081501A
公开(公告)日：2017-07-12
申请号：KR1020160000618
申请日：2016-01-04
Applicant: 한국전자통신연구원
Abstract: 서버에서의스트리밍데이터전송방법은, 스트리밍데이터를생성하는단계, 상기스트리밍데이터에포함된각 데이터블록에대해, 대응하는데이터블록및 상기대응하는데이터블록의생성시간정보를포함하는데이터스트림을생성하는단계, 상기각 데이터블록에대응하는데이터스트림을시간인증서버로전송하는단계, 상기각 데이터블록의상기생성시간정보에대해, 상기카멜레온해시함수를이용하여생성된시간인증정보를상기시간인증서버로부터수신하는단계, 그리고상기각 데이터블록에대응하는데이터스트림에상기시간인증정보를포함시켜사용자단말로전송하는단계를포함할수 있다.
Abstract translation: 流数据发送方法eseoui服务器，生成所述流数据的步骤，所述方法包括：对于每个数据块包括在所述流数据，产生数据流包括对应的数据块和数据块的对应于该生成时间信息 上述用于每个数据块的创建时间信息的步骤中，变色龙产生的时间使用中的功能的验证信息，以对应于每个数据块的时间的认证服务器的传输数据流，从时间的认证服务器， 通过在数据流中包含时间认证信息，将对应于每个数据块的数据流发送给用户终端。
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公开(公告)号：KR101543711B1
公开(公告)日：2015-08-12
申请号：KR1020110103670
申请日：2011-10-11
Applicant: 한국전자통신연구원
CPC classification number: H04L9/3255 , H04L2209/805
Abstract: 본발명의실시예들에따른짧은서명을제공하는경량그룹서명방법및 장치는기존에알려진제어가능연결성을제공하는그룹서명기법들과유사한보안특성들을제공하지만짧은서명을출력하고스마트단말상에서서명생성및 서명검증, 폐기시 우수한연산효율성을제공함으로써, 키폐기방법이단순하고서명생성및 검증시 연산효율성이우수하며매우짧은서명길이를출력하므로다양한익명성기반의응용환경에서폭넓게적용될수 있다.
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24.发明公开
公开(公告)号：KR1020140108749A
公开(公告)日：2014-09-15
申请号：KR1020130021262
申请日：2013-02-27
Applicant: 한국전자통신연구원
CPC classification number: G06F21/64
Abstract: Provided are a device for privacy protection document authentication information using various privacy protection electronic signatures and multidimensional codes and a method for authenticating a privacy protection document using the same. The provided device comprises: an electronic signature information generation unit to generate privacy protection electronic signature information about document content; a multidimensional code generation unit to generate a multidimensional code corresponding to the generated privacy protection electronic signature information; and a multidimensional code output unit to output the generated multidimensional code to a document. According to the device of the present invention, a privacy protection electronic signature value generated by a personalized smart device can be output to a physical document in the form of a multidimensional code to authenticate the document.
Abstract translation: 提供了一种使用各种隐私保护电子签名和多维码的隐私保护文档认证信息的设备以及使用其进行认证的隐私保护文档的方法。 所提供的设备包括：电子签名信息生成单元，用于生成关于文档内容的隐私保护电子签名信息; 多维代码生成单元，用于生成与生成的隐私保护电子签名信息对应的多维代码; 以及多维代码输出单元，用于将生成的多维代码输出到文档。 根据本发明的装置，由个性化智能设备生成的隐私保护电子签名值可以以多维代码的形式被输出到物理文档以对该文档进行认证。
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公开(公告)号：KR1020140060022A
公开(公告)日：2014-05-19
申请号：KR1020120126601
申请日：2012-11-09
Applicant: 한국전자통신연구원
IPC: H04L9/08
Abstract: A quantum signature method by an arbitrator and a system using the same are disclosed. The quantum signature method by the arbitrator according to the present invention comprises the steps of: sharing a bell state and a private key previously generated among a signer device, an arbitrator device and a receiver device; encrypting a message to be transmitted by the signer device, generating an encrypted quantum message and a signature corresponding to the encrypted quantum message and transmitting a message-signature pair to the arbitrator device based on them; making the arbitrator device verify validity of the signature on the encrypted quantum message provided by the signer device and transmit a verification result and the message-signature pair to the receiver device; and making the receiver device check the message-signature pair and the verification result and decrypt the encrypted quantum message by using the previously shared private key according to the check result.
Abstract translation: 公开了一种由仲裁员和使用其的系统的量子签名方法。 根据本发明的仲裁员的量子签名方法包括以下步骤：共享先前在签署者设备，仲裁设备和接收机设备之间生成的铃声状态和私钥; 加密由签名者设备发送的消息，生成加密的量子消息和对应于加密的量子消息的签名，并基于它们向仲裁设备发送消息签名对; 使仲裁设备验证由签名者设备提供的加密量子消息上的签名的有效性，并将验证结果和消息签名对传送到接收机设备; 并且使接收机设备检查消息签名对和验证结果，并且根据检查结果使用先前共享的私钥对加密的量子消息进行解密。
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Patent Agency Ranking
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：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：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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公开(公告)号：KR1020090065986A
公开(公告)日：2009-06-23
申请号：KR1020070133562
申请日：2007-12-18
Applicant: 한국전자통신연구원
IPC: H04L9/08
CPC classification number: H04L9/3073 , H04L9/083
Abstract: A method for safely sharing a multi-party-key using a bilinear map and a system thereof are provided to efficiently share a key by using only a first round in order to share the key. A system for sharing a multi-party-key includes a key generating unit(100) and a plurality of participants(201~210). Each participant receives advance information from the key generating unit. Each participant generates a sharing key by exchanging interexchange information. Each participant performs communication with the key generating unit as an advance operation before transmitting the interexchange information. A process for sharing the key is finished by a first round of a step which transmits/receives the exchange information between the participants. The process for sharing the key omits a communication process with the key generating unit.
Abstract translation: 提供一种使用双线性映射安全地共享多方密钥的方法及其系统，以通过仅使用第一轮来共享密钥来有效地共享密钥。 用于共享多方密钥的系统包括密钥生成单元（100）和多个参与者（201〜210）。 每个参与者从密钥生成单元接收提前信息。 每个参与者通过交换交换信息来产生共享密钥。 每个参与者在传送交换信息之前，作为提前操作与密钥产生单元进行通信。 用于共享密钥的过程通过在参与者之间发送/接收交换信息的第一轮完成。 共享密钥的过程省略了与密钥生成单元的通信过程。
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