[Resource Topic] 2014/250: Cryptanalysis of the MORE symmetric key fully homomorphic encryption scheme

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Title:
Cryptanalysis of the MORE symmetric key fully homomorphic encryption scheme

Authors: Boaz Tsaban, Noam Lifshitz

Abstract:

The fully homomorphic symmetric encryption scheme \emph{MORE} encrypts keys by conjugation with a random invertible matrix over an RSA modulus. We provide a two known-ciphertexts cryptanalysis recovering a linear dependence among the two encrypted keys.

ePrint: https://eprint.iacr.org/2014/250

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