Sage Code for GGH Cryptanalysis by Hu and Jia

malb::blog

Recently, Yupu Hu and Huiwen Jia put a paper on the Cryptology ePrint Archive which describes a successful attack of the GGH (and GGHLite) candidate multilinear map. The attack does not try to recover the secret $latex g$ or any other secret parameter of the map. Instead, it solves the Extraction $latex kappa$-graded CDH (Ext-GCDH) problem directly.

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