[Resource Topic] 2020/1581: Remark on the Security of CKKS Scheme in Practice

Welcome to the resource topic for 2020/1581

Title:
Remark on the Security of CKKS Scheme in Practice

Authors: Jung Hee Cheon, Seungwan Hong, Duhyeong Kim

Abstract:

Recently, Li and Micciancio (ePrint 2020/1533) have proposed a passive attack on the CKKS approximate homomorphic encryption (HE) scheme, which allows an adversary to query decryption on valid ciphertexts. In this paper, we discuss for which applications such attack is applicable, and introduce an extension of the HEaaN library. In addition, we investigate the mitigation strategies of other HE libraries that support the CKKS scheme including HElib, PALISADE, Lattigo and SEAL.

ePrint: https://eprint.iacr.org/2020/1581

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