| Turn R and Habibi J "Interactions of Security and Fault-Tolerance" Proceedings of the ninth NBS/NCSC National Computer Security Conference, pp. 138 - 142, September 1986. |
....and all the systems outlined in the previous section took advantage of this. Fault tolerance, although obviously important to distributed systems, is not a key issue to be dealt with here, however it is interesting to think about the parallels between faulttolerance and security. Turn and Habibi [TH86] as well as Meadows [MEA] say that providing security is just coping with another class of failure. Fault tolerant systems are designed with a model of failure in mind: that is assumptions about the behaviour and misbehaviour of the system. A security model of trust is the same idea but with fewer ....
Turn R and Habibi J "Interactions of Security and Fault-Tolerance" Proceedings of the ninth NBS/NCSC National Computer Security Conference, pp. 138 - 142, September 1986.
....hardware channels are employed, either for the acceptance test, or for parallel execution of an alternate in distributed RB [Chu87, Kim88] 2.6. 4 NVS Support for System Security Computer security and software fault tolerance have the common goal to provide reliable software for computer systems [Tur86, Dob86]. A special concern is malicious logic, which is defined as: Hardware, software, or firmware that is intentionally included in a system for the purpose of causing loss or harm [DOD85] The loss or harm here is experienced by the user, since either incorrect service, or no service at all is ....
R. Turn and J. Habibi. On the interactions of security and fault tolerance. In 9th National Computer Security Conference, pages 138--142, September 1986.
....and liveness in a surrounding system may rely on the availability of these services, they may need to be replicated for high availability. It has been argued that these requirements pose a conflict, in that replicating data or services for high availability makes them more difficult to protect [29, 15, 14, 18]. This tradeoff is particularly pertinent to security critical services of a trusted computing base, as prudence dictates that these services be localized to facilitate their protection. A compromise to balance the needs for security and availability in some services is to replicate the service in ....
R. Turn and J. Habibi. On the interactions of security and fault-tolerance. In Proceedings of the 9th NBS/NCSC National Computer Security Conference, pages 138--142, Sept. 1986.
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