How to distinguish between a block cipher and a random permutation by lowering the input entropy
García Hernández, Pedro Isasi, J.M. Sierra, Ana Isabel González-Tablas · 2001
A novel cryptanalysis technique is presented, and its suitability for distinguishing a block cipher algorithm or a hash function from a random permutation is explained. Additionally, we propose a genetic algorithm based implementation and show some preliminary results of these ideas on reduced rounds versions of the block cipher TEA.