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Cryptanalysis of Boyen's Attribute-Based Encryption Scheme in TCC 2013
IACR Cryptology ePrint Archive
In TCC 2013, Boyen suggested the first lattice based construction of attribute based encryption (ABE) for the circuit class NC1. Unfortunately, soon after, a flaw was found in the security proof of the scheme. However, it remained unclear whether the scheme is actually insecure, and if so, whether it can be repaired. Meanwhile, the construction has been heavily cited and continues to be extensively studied due to its technical novelty. In particular, this is the first lattice based ABE whichdblp:journals/iacr/AgrawalBNXXY21 fatcat:3az4bkkbpzcshjlehxaanfwnfm