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TRUST WORTHY COMUTING UNDER RESOURCE CONSTRAINTS WITH THE DOWN POLICY

In this project we present a simple way to resolve a complicated network security. This is done by the following two ways. They are as follows, first is the decrypt only when necessary (DOWN) policy, which can substantially improve the ability of low-cost to protect the secrets. The DOWN policy relies on the ability to operate with fractional parts of secrets. We discuss the feasibility of extending the DOWN policy to various asymmetric and symmetric cryptographic primitives. The second is cryptographic authentication strategies which employ only symmetric cryptographic primitives, based on novel ID-based key pre-distribution schemes that demand very low complexity of operations to be performed by the secure coprocessors (ScP) and can take good advantage of the DOWN policy.



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