Paper 2019/1446

Boolean functions for homomorphic-friendly stream ciphers

Claude Carlet and Pierrick Méaux


The proliferation of small embedded devices having growing but still limited computing and data storage facilities, and the related development of cloud services with extensive storage and computing means, raise nowadays new privacy issues because of the outsourcing of data processing. This has led to a need for symmetric cryptosystems suited for hybrid symmetric-FHE encryption protocols, ensuring the practicability of the FHE solution. Recent ciphers meant for such use have been introduced, such as LowMC, Kreyvium, FLIP, and Rasta. The introduction of stream ciphers devoted to symmetric-FHE frameworks such as FLIP and its recent modification has in its turn posed new problems on the Boolean functions to be used in them as filter functions. We recall the state of the art in this matter and present further studies (without proof).

Available format(s)
Secret-key cryptography
Publication info
Published elsewhere. MINOR revision.A2C: International Conference on Algebra, Codes and Cryptology
Boolean FunctionsHomomorphic Encryption(Improved) Filter Permutator
Contact author(s)
claude carlet @ gmail com
pierrick meaux @ uclouvain be
2019-12-12: received
Short URL
Creative Commons Attribution


      author = {Claude Carlet and Pierrick Méaux},
      title = {Boolean functions for homomorphic-friendly stream ciphers},
      howpublished = {Cryptology ePrint Archive, Paper 2019/1446},
      year = {2019},
      note = {\url{}},
      url = {}
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