DLP SPONGE CONSTRUCTION FOR AUTHENTICATED ENCRYPTION

In this paper, we present a new DLP-sponge construction to ensure integrity and privacy. This scheme solves problem related to small keys by introducing a double length construction: k approximate to 2r. Previous researcher show that the size of key k must be twice of the capacity c which will in turn affect the size of the underlying permutation: b = c + r. As c decreases, the bitrate r increases as well. Besides that, our scheme is resistant against most of the generic attacks such as multicollision attack with a complexity of t. 22(2( c+3)\2). Therefore, our scheme is better than some of the existing Authenticated Encryption (AE) schemes.