Paper 2014/250 Original: eprint.iacr.org/2014/250 ↗

Cryptanalysis of the MORE symmetric key fully homomorphic encryption scheme

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.

Metadata
Available format(s)
PDF
Category
Secret-key cryptography
Publication info
Preprint.
History
2015-06-05: last updated
2014-04-20: published
Short URL
https://ia.cr/2014/250
License
https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2014/250,
      author = {Boaz Tsaban and Noam Lifshitz},
      title = {Cryptanalysis of the MORE symmetric key fully homomorphic encryption scheme},
      howpublished = {Cryptology {ePrint} Archive, Paper 2014/250},
      year = {2014},
      url = {https://eprint.iacr.org/2014/250}
}
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