Leakage-free redactable signaturesAshish KunduMikhail J. Atallahet al.2012CODASPY 2012Conference paper
On the complexity of authorization in RBAC under qualification and security constraintsYuqing SunQihua Wanget al.2011IEEE TDSCPaper
Dynamic and efficient key management for access hierarchiesMikhail J. AtallahMarina Blantonet al.2009ACM TISSECPaper