In this paper we design several double length hash functions and study their security properties in the random oracle model. We design a class of double length hash functions (and ...
Abstract. This paper addresses the security of symmetric cryptosystems in the blockwise adversarial model. At Crypto 2002, Joux, Martinet and Valette have proposed a new kind of at...
Abstract. We present a new stream cipher, Rabbit, based on iterating a set of coupled nonlinear functions. Rabbit is characterized by a high performance in software with a measured...
Martin Boesgaard, Mette Vesterager, Thomas Pederse...
At Crypto ’06, Bellare presented new security proofs for HMAC and NMAC, under the assumption that the underlying compression function is a pseudo-random function family. Converse...
In this paper, a study of a paradigm for domain expansion of MACs is generalized. In particular, a tradeoff between the efficiency of a MAC and the tightness of its security reduc...