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Recent attacks on NTRU lattices given by Ducas and van Woerden (ASIACRYPT 2021) showed that for moduli q larger than the so-called fatigue point $$n^{2.484+o(1)}$$ , the security of NTRU is noticeably less than that of (ring)-LWE. Unlike NTRU-based PKE with q typically lying in the secure regime of NTRU lattices (i.e., $$q

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NTRU-Based Bootstrapping for MK-FHEs Without Using Overstretched Parameters

  • 会议论文

  • 发表日期：

    2025年

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  • Binwu Xiang,
  • Jiang Zhang,
  • Kaixing Wang,
  • Yi Deng,
  • Dengguo Feng

摘要

Recent attacks on NTRU lattices given by Ducas and van Woerden (ASIACRYPT 2021) showed that for moduli q larger than the so-called fatigue point $$n^{2.484+o(1)}$$ , the security of NTRU is noticeably less than that of (ring)-LWE. Unlike NTRU-based PKE with q typically lying in the secure regime of NTRU lattices (i.e., $$q