公开(公告)号：US20140062761A1

公开(公告)日：2014-03-06

申请号：US13732997

申请日：2013-01-02

Applicant: Electronics and Telecommunications Research Institute

Inventor： Taek Young YOUN ,  Do Won HONG

IPC: G01S13/76

CPC classification number: G01S13/765 ,  G01S13/78 ,  G06F21/554 ,  H04L63/123 ,  H04W12/06 ,  H04W12/12

Abstract: A tag decides a response based on a plurality of queries received from a reader, determines whether to transmit the response, transmits the response to the reader according to the results of the determination, and transmits a message authentication code including communication content to the reader. The reader calculates a consumed time period which is the time difference between a transmission time at which the queries are transmitted and a reception time at which the response is received, calculates an average consumed time period of the consumed time period, and measures a distance to the tag based on the average consumed time period. Accordingly, it is possible to check an attacker's intervention with a high probability, thereby improving distance measurement performance. Also, the tag may efficiently perform computing and communication.

Abstract translation: 标签基于从读取器接收的多个查询来决定响应，确定是否发送响应，根据确定的结果向响应者发送响应，并将包括通信内容的消息认证码发送给读取器。 读取器计算作为发送查询的发送时间与接收到响应的接收时间之间的时间差的消耗时间段，计算消耗时间段的平均消耗时间段，并且测量到 基于平均消费时间段的标签。 因此，可以高概率地检查攻击者的干预，从而提高距离测量性能。 此外，标签可以有效地执行计算和通信。

公开(公告)号：US20130148803A1

公开(公告)日：2013-06-13

申请号：US13705666

申请日：2012-12-05

Applicant: Electronics and Telecommunications Research Institute

Inventor： Nam-Su JHO ,  Ku Young CHANG ,  Do Won HONG

IPC: H04L9/08

CPC classification number: H04L9/0861 ,  H04L9/3073

Abstract: A multi-user searchable encryption system includes a key generation center to issue a private secret key to a user and trace information regarding a user who has generated an index, and a user terminal device to generate an index for searching for a database using the private secret key. The multi-user searchable encryption system includes a database (DB) server that verifies the index generated by the user terminal device and searches for corresponding data to the verified index.

Abstract translation: 多用户可搜索的加密系统包括密钥生成中心，用于向用户发出专用秘密密钥并跟踪关于已经生成索引的用户的信息;以及用户终端设备，用于生成用于使用私有的搜索数据库的索引 密钥。 多用户可搜索的加密系统包括数据库（DB）服务器，用于验证由用户终端设备生成的索引并搜索与已验证索引相对应的数据。