Saurabh Paul, Christos Boutsidis, et al.
JMLR
In the paper, two SNS buddies relationship based authorization delegation mechanisms are introduced to enable SNS users to share his/her external protected resources with friends or friends' friends. Through this solution, user can share more information or documents with his/her friends in a controlled way; he/she can easily find the wanted information or documents with the help of social network relationship. © 2009 IEEE.