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Cumulatively All-Lossy-But-One Trapdoor Functions from Standard Assumptions
Web: https://iacr.org/news/item/19130
Sept. 16, 2022, 1:42 p.m. |
IACR News iacr.org
ePrint Report: Cumulatively All-Lossy-But-One Trapdoor Functions from Standard Assumptions
Benoît Libert, Ky Nguyen, Alain Passelègue
Chakraborty, Prabhakaran, and Wichs (PKC'20) recently introduced a new tag-based variant of lossy trapdoor functions, termed cumulatively all-lossy-but-one trapdoor functions (CALBO-TDFs). Informally, CALBO-TDFs allow defining a public tag-based function with a (computationally hidden) special tag, such that the function is lossy for all tags except when the special secret tag is used. In the latter case, the function becomes injective and efficiently invertible using a …
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