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Architectural Support for System Protection and Database Security

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4 Author(s)
Fernandez, E.B. ; IBM Corporation, Los Angeles Scientific Center ; Summers, R.C. ; Lang, T. ; Coleman, C.D.

A set of architectural extensions to a machine of the type of IBM System/370 is proposed. The proposal involves hardware/software interaction to constrain the execution-time behavior of application and higher authority programs. The extensions consist of new states of privilege, enforcement of disciplined transition between states, hardware distinction of information types, and a mechanism to control data transfers between main and external storage. Application of the extensions to a shared database system, where users interact through a high-level language, shows that protection of the operating system and the database can be enhanced significantly with respect to errors or deliberate attacks from users

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Computers, IEEE Transactions on  (Volume:C-27 ,  Issue: 8 )