摘要：In Amb ien t In tellig en ce, mainly Users intend to con trol th eir o ffice d ev ices which are an other usersd evices. For example, in o ffice, wh en they h ave to us e ano ther d evices wh ich belong to ano ther u ser.Therefore, if th ey want to use th em , they s hou ld g et those auth orization from owners b efore usin g th em . Ino rd er to g et those perm is sions, th ey o bvio usly need to ask their authenticatio n / autho rization. However, th eo wner of devices who go t tho se askin g, sho uld not give him all pos sib le permission b ut o nly the necessaryin order to h is performance the in ten ded task. To p ro vide tho se perm ission s, we p rop osed Dy namicC redential (DC ) th at used X.50 9 Proxy Certificate in this p ap er
关键词：.50 9; Con tex t-Aware; Dy namic Credential; Securi ty Structure; Smart Office
