[Resource Topic] 2016/1075: Cryptanalysis of Simple Matrix Scheme for Encryption

Welcome to the resource topic for 2016/1075

Title:
Cryptanalysis of Simple Matrix Scheme for Encryption

Authors: Gu Chunsheng

Abstract:

Recently, Tao et al. presented a new simple and efficient multivariate pubic key encryption scheme based on matrix multiplica- tion, which is called Simple Matrix Scheme or ABC. Using linearization method, we propose a polynomial time algorithm, which directly solves an equivalent private key from the public key of ABC. Furthermore, our attack can also be applied to the variants of ABC since these variants have the same algebraic structure as the ABC scheme. Therefore, the ABC cryptosystem and its variants are insecure.

ePrint: https://eprint.iacr.org/2016/1075

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