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Lecture Notes in Computer Science
In 2007, -Invertible Cycles ( IC) was proposed by Ding et al. This is one of the most efficient trapdoors for encryption/signature schemes, and of the mixed field type for multivariate quadratic publickey cryptosystems. Such schemes fit on the implementation over low cost smart cards or PDAs. In 2008, Fouque et al. proposed an efficient attack against the IC signature scheme by using Gröbner basis algorithms. However, they only explicitly dealt with the odd case, i.e. is odd, but the even case;doi:10.1007/978-3-540-89598-5_3 fatcat:hrx7mevstjhlxinjl35ewkafve