Analysis of Step-Reduced SHA-256

  title={Analysis of Step-Reduced SHA-256},
  author={Florian Mendel and Norbert Pramstaller and Christian Rechberger and Vincent Rijmen},
This is the first article analyzing the security of SHA-256 against fast collision search which considers the recent attacks by Wang et al. We show the limits of applying techniques known so far to SHA-256. Next we introduce a new type of perturbation vector which circumvents the identified limits. This new technique is then applied to the unmodified SHA-256. Exploiting the combination of Boolean functions and modular addition together with the newly developed technique allows us to derive… CONTINUE READING