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REPORTS > KEYWORD > COMPLEXITY OF CRYPTOGRAPHY:
Reports tagged with complexity of cryptography:
TR12-157 | 12th November 2012
Andrej Bogdanov, Chin Ho Lee

On the depth complexity of homomorphic encryption schemes

Revisions: 2

We show that secure homomorphic evaluation of any non-trivial functionality of sufficiently many inputs with respect to any CPA secure encryption scheme cannot be implemented by constant depth, polynomial size circuits, i.e. in the class AC0. In contrast, we observe that certain previously studied encryption schemes (with quasipolynomial security) can ... more >>>




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