MaTRU: A New NTRU-Based Cryptosystem
نویسندگان
چکیده
In this paper, we propose a new variant of the NTRU public key cryptosystem − the MaTRU cryptosystem. MaTRU works under the same general principles as the NTRU cryptosystem, except that it operates in a different ring with a different linear transformation for encryption and decryption. In particular, it operates in the ring of k by k matrices of polynomials in R = Z[X]/(X−1), whereas NTRU operates in the ring Z[X]/(X − 1). Note that an instance of MaTRU has the same number of bits per message as an instance of NTRU when nk = N . The improved efficiency of the linear transformation in MaTRU leads to respectable speed improvements by a factor of O(k) over NTRU at the cost of a somewhat larger public key.
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