关键词: 图像认证 用户认证 基于知识的认证 网络安全 普适计算

Abstract: Pervasive computing is a computing paradigm for future, in which a user can get satisfied service at anytime and anywhere. Considering trends of user personalization and device diversity, a personal user authentication method by extending the photographic

Key words: Photographic authentication, User authentication, Knowledge-based authentication, Network security, Pervasive computing