Implementation of NTRU PKCS using array for polynomials upto degree 147 with private key protection algorithm using XOR function only

Abstract

We present a new technique to prevent chosen-cipher text attack against the NTRU public key cryptosystem, based on polynomial algebra. In this paper, we present the existing NTRU public key cryptosystem implemented in C using array in section II, which can perform encryption and decryption on text file using polynomials up to degree 147. In section III, we present the chosen cipher text attack with an example. In the section IV, we present a new technique to guard the NTRU PKCS against chosen cipher text attack.