?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Context-aware+Authorization+in+Highly+Dynamic+Environments&rft.creator=TIGLI%2C+Jean-Yves+&rft.creator=LAVIROTTE%2C+Stephane+&rft.creator=REY%2C+Gaetan+&rft.creator=Hourdin%2C+Vincent+&rft.creator=RIVEILL%2C+Michel+&rft.subject=Dynamical+Systems&rft.description=Highly+dynamic+computing+environments%2C+like+ubiquitous+and+pervasive+computing+environments%2C+require+frequent+adaptation+of+applications.+Context+is+a+key+to+adapt+suiting+user+needs.+On+the+other+hand%2C+standard+access+control+trusts+users+once+they+have+authenticated%2C+despite+the+fact+that+they+may+reach+unauthorized+contexts.+We+analyse+how+taking+into+account+dynamic+information+like+context+in+the+authorization+subsystem+can+improve+security%2C+and+how+this+new+access+control+applies+to+interaction+patterns%2C+like+messaging+or+eventing.+We+experiment+and+validate+our+approach+using+context+as+an+authorization+factor+for+eventing+in+Web+service+for+device+(like+UPnP+or+DPWS)%2C+in+smart+home+security.&rft.publisher=International+Journal+of+Computer+Science+Issues%2C+IJCSI&rft.date=2009-09&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F6709%2F1%2F4-1-24-35.pdf&rft.identifier=++TIGLI%2C+Jean-Yves++and+LAVIROTTE%2C+Stephane++and+REY%2C+Gaetan++and+Hourdin%2C+Vincent++and+RIVEILL%2C+Michel+++(2009)+Context-aware+Authorization+in+Highly+Dynamic+Environments.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F6709%2F