Efficent Key Distribution Schemes for Digital Mobile Communications

• Main Authors: Ya-wen Lee, 李雅文
• Other Authors: Tzong-Chen Wu
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/74646396838061718035

碩士 === 國立臺灣科技大學 === 資訊管理系 === 88 === Wireless communication increasingly establishes a convenient environment for mobile people to interact, as mobile devices are rapidly spreading and the telecommunication industry is gradually privatized. Since the third generation of mobile systems will enhance the communication speed, better and faster services could be expected. Wireless communications broadcast through public channels so that all can retrieve the data in an airwave form. However, it is desired that only legal users can access the data, which requires authenticating legal users. That is, only authenticated users can be granted the privileges of system resources and services. Current literature has proposed conference key distribution schemes for wireless communications. Although these previous works enable a group of people to set up an electronic conference, however, some opinions could be suppressed with the identities of participants disclosed. Therefore, this thesis aims at conference key distribution schemes that maintain the secrecy of interactions as well as the anonymity of participants. In addition to the two essential requirements, the thesis attempts to achieve feasibility and efficiency. To sum up, the proposed schemes in this thesis are characterized as follows: (1)They can integrate with current wireless systems. (2)Both mobile stations and servers expend little computational cost. (3)Identities of all the participants are hidden from each other in a session/conference. (4)In key distribution, mobile stations are verified with their shared session/conference keys.