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Local-Collision-Differential-Attack-on-Reduced-SHA-256-upto-24-Rounds Build Status

This repository contains the implementation of the local-collision differential 22-rounds attack (deterministic) & 24-rounds attack (probabilistic) on SHA-256 in C which are described in "New Collision Attacks against Up to 24-Step SHA-2".

Project Build Procedure

  1. Clone the repository: git clone "https://github.com/ChakshuGupta13/Local-Collision-Differential-Attack-on-Reduced-SHA-256-upto-24-Rounds.git"
  2. Traverse to the cloned directory and then build directory: cd ./Local-Collision-Differential-Attack-on-Reduced-SHA-256-upto-24-Rounds/build
  3. Build CMake project: cmake .
  4. Build executable files: make

Mount Attack

  1. To mount 22-round attack, run: ./22-attack inside the build directory.
  2. To mount 24-round attack, run: ./24-attack inside the build directory.

Note: As the 24-round attack is probabilistic in nature, therefore, the running time for the program is approximately 5-10 minutes.