An Asymmetric Cryptographic Key Assignment Scheme for Access Control in Tree Structural Hierarchies.

Debasis Giri Parmeshwary Dayal Srivastava An Asymmetric Cryptographic Key Assignment Scheme for Access Control in Tree Structural Hierarchies. 348-354 2007 4 I. J. Network Security 3 http://ijns.femto.com.tw/contents/ijns-v4-n3/ijns-2007-v4-n3-p348-354.pdf db/journals/ijnsec/ijnsec4.html#GiriS07