An asymmetric cryptographuic key assignment scheme for access control in totally-ordered hierarchies^∗

^∗This research was partially supported by the National Science Council, Taiwan, R.O.C., under contract no.: NSC88-2213-E-324-002

Abstract

Many methods based on cryptography have been proposed to solve the problem of access control in hierarchic structures. However, these schemes are only used in symmetric (or one-key) cryptosystems. In this article, we propose a new multilevel access control scheme for a totally-ordered hierarchy that can be used in asymmetric (or two-key) cryptosystem. It is well known that there are two main advantages in asymmetric cryptography: key distribution and authentication. Our scheme is, to our best knowledge, the first to be used as an asymmetric cryptosystem.

Keywords:

• Authentication
• cryptography
• data security

C.R. Category:

• E.3

^∗This research was partially supported by the National Science Council, Taiwan, R.O.C., under contract no.: NSC88-2213-E-324-002

^∗This research was partially supported by the National Science Council, Taiwan, R.O.C., under contract no.: NSC88-2213-E-324-002

Notes

^∗This research was partially supported by the National Science Council, Taiwan, R.O.C., under contract no.: NSC88-2213-E-324-002