NTRU cryptosystems have allowed designing a range of cryptographic schemes due to their flexibility and efficiency. Although NTRU cryptosystems were introduced nearly two decades ago, they have not yet received any attention like designing secret key encryptions. In this paper, we propose a secret key encryption over NTRU lattices, named NTRUCipher. This NTRUCipher is designed using modification of the NTRU public key encryption. We analyze this cipher efficiency and thw space complexity wit respect to security aspectx, and also show that the NTRUCipher is secured under the indistinguishability chosen plaintext attack.

Published in: World Congress on Internet Security (WorldCIS-2017)

• Date of Conference: 11-14 December 2017
• DOI: 10.2053/WorldCIS.2017.0017
• ISBN: 978-1-908320-81-0
• Conference Location: University of Cambridge, UK