ajaycc17 / blake2s

Implementation and round-reduced preimage attacks on BLAKE2s hash function.

BLAKE2s Hash function: BS and MS Project- IISERB(2022-23)

Under the MS project, the working principles, methods and optimsations over BLAKE was studied and used to implement the BLAKE2s hash function. It can produce hash for a given string or any binary file using CLI. Also, properties of BLAKE2s were analysed and preimage attacks were mounted on the round-reduced(i.e. 1.5 and 2 rounds) versions. This repository contains both the works combined and uses C/C++ programming language for implementation of the functions and attacks.

Author

• @ajaycc17

Under guidance of

• Dr Shashank Singh(IISER Bhopal)

Acknowledgements

• Jean-Philippe Aumasson, Luca Henzen, Willi Meier, Raphael C.-W. Phan: Sha-3 proposal blake. Submission to NIST (2008)
• Ji, L., Liangyu, X.: Attacks on round-reduced BLAKE. Cryptology ePrint Archive, Report 2009/238 (2009)
• Jean-Philippe Aumasson, Jian Guo, Simon Knellwolf, Krystian Matusiewicz, and Willi Meier: [Differential and invertibility properties of BLAKE (full version). Cryptology ePrint Archive, Report 2010/043 (2010)
• Aumasson, J.P., Samuel N., Z. Wilcox-O'Hearn, and Christian W.: BLAKE2: simpler, smaller, fast as MD5.Cryptology ePrint Archive, Report 2013/322 (2013)