Notions of Black-Box Reductions

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Provided by: Darmstadt University of Technology
Topic: Security
Format: PDF
Reductions are the common technique to prove security of cryptographic constructions based on a primitive. They take an allegedly successful adversary against the construction and turn it into a successful adversary against the underlying primitive. To a large extent, these reductions are black-box in the sense that they consider the primitive and/or the adversary against the construction only via the input-output behavior, but do not depend on internals like the code of the primitive or of the adversary.
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