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Title:
Revealing Encryption for Partial Ordering
Authors: Helene Haagh, Yue Ji, Chenxing Li, Claudio Orlandi, Yifan Song
Abstract:We generalize the cryptographic notion of Order Revealing Encryption (ORE) to arbitrary functions and we present a construction that allows to determine the (partial) ordering of two vectors i.e., given E(x) and E(y) it is possible to learn whether x is less than or equal to y, y is less than or equal to x or whether x and y are incomparable. This is the first non-trivial example of a Revealing Encryption (RE) scheme with output larger than one bit, and which does not rely on cryptographic obfuscation or multilinear maps.
ePrint: https://eprint.iacr.org/2016/972
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