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and authorization logic constructs (e.g., principals and access control policies) in a uniform way. AURA is based on polymorphic DCC and uses dependent types to permit assertions that refer directly to AURA values while keeping computation out of the assertion level to ensure tractability. The main technical results of this paper paper include a proof of decidability for AURA's type system, a fully mechanically verified proof of soundness, and a prototype typechecker and interpreter.
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