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    • 9. 发明公开
    • 제어가능 연결성을 제공하는 그룹서명 시스템 및 방법
    • 集团签名系统和具有可控链接性的方案
    • KR1020120035069A
    • 2012-04-13
    • KR1020100096561
    • 2010-10-04
    • 한국전자통신연구원
    • 황정연이석준배근태이윤경문혜란이상우김신효정병호조현숙
    • H04L9/30
    • H04L9/3255
    • PURPOSE: A group signature system and method for offering controllable connectivity are provided to protect user privacy by using a group signature technique capable of controlling anonymity to various levels. CONSTITUTION: A key issuer server(100) generates a first parameter and a master issue key of a group public key. An identifier server(200) generates a second parameter, a master authentication key and a master connection key. A connector server(300) receives the master connection key from the identifier server. User equipment(400) issues a signature key from the key issuer server. A signature verification part(500) is composed of an algorithm verifying the validity of a given signature. A signer certification information confirmation part(600) is composed of the algorithm verifying the validity of signer valid information generated from the identifier server.
    • 目的:提供一种用于提供可控连接性的组签名系统和方法,以通过使用能够将匿名控制到各种级别的组签名技术来保护用户隐私。 构成:密钥发行者服务器(100)生成组公钥的第一参数和主发行密钥。 标识符服务器(200)生成第二参数,主认证密钥和主连接密钥。 连接器服务器(300)从标识符服务器接收主连接密钥。 用户设备(400)从密钥发行者服务器发出签名密钥。 签名验证部分(500)由验证给定签名的有效性的算法组成。 签名者认证信息确认部分(600)由验证从标识符服务器生成的签名者有效信息的有效性的算法组成。
    • 10. 发明公开
    • 식별정보를 포함하는 멀티미디어 데이터 생성 장치 및 방법
    • 用于识别多媒体数据的设备和方法
    • KR1020110005172A
    • 2011-01-17
    • KR1020090062745
    • 2009-07-09
    • 한국전자통신연구원
    • 김영호한승완김신효정병호조현숙
    • H04N7/18H04N5/225
    • H04N7/18H04N7/1675H04N7/169
    • PURPOSE: A multimedia data generating device including identification information and a method thereof are provided to connect multimedia data and inherent identification information by cryptological feature and forgery prevention of multimedia data obtaining device. CONSTITUTION: A data interface(112) receives input of a multimedia data such as image and voice information. A forgery preventing identification information insertion unit(120) generates identification number, which is impossible for illegal change by a device identification number, time information and location information. The forgery preventing identification information inserting unit inserts the identification information to a multimedia data of a data interface unit. An external device transmitting unit(121) provides identification information-inserted data to an external device.
    • 目的:提供一种包括识别信息及其方法的多媒体数据产生装置,通过密码学特征和多媒体数据获取装置的伪造防范来连接多媒体数据和固有识别信息。 构成:数据接口(112)接收诸如图像和语音信息的多媒体数据的输入。 防伪识别信息插入单元(120)生成识别号码,不能通过设备识别号码,时间信息和位置信息进行非法更改。 防伪识别信息插入单元将识别信息插入数据接口单元的多媒体数据。 外部设备发送单元(121)向外部设备提供识别信息插入数据。