Special Section on Cryptography and Information Security
On the Limitations of Computational Fuzzy Extractors
2023 年 E106.A 巻 3 号 p. 350-354
詳細
2023 年 E106.A 巻 3 号 p. 350-354
We present a negative result of fuzzy extractors with computational security. Specifically, we show that, under a computational condition, a computational fuzzy extractor implies the existence of an information-theoretic fuzzy extractor with slightly weaker parameters. Our result implies that to circumvent the limitations of information-theoretic fuzzy extractors, we need to employ computational fuzzy extractors that are not invertible by non-lossy functions.
