Multicollision Attacks on Some Generalized Sequential Hash Functions

  title={Multicollision Attacks on Some Generalized Sequential Hash Functions},
  author={Mridul Nandi and Douglas R. Stinson},
  journal={IEEE Transactions on Information Theory},
A multicollision for a function is a set of inputs whose outputs are all identical. A. Joux showed multicollision attacks on the classical iterated hash function. He also showed how these multicollision attacks can be used to get a collision attack on a concatenated hash function. In this paper, we study multicollision attacks in a more general class of hash functions which we term "generalized sequential hash functions." We show that multicollision attacks exist for this class of hash… CONTINUE READING