eSTREAM - The ECRYPT Stream Cipher Project

Grain (Phase 2)

This is the archived eSTREAM Phase 2 page of Grain. For the latest information on Grain, please go to the eSTREAM Phase 3 page on Grain here

Submitters : Martin Hell, Thomas Johansson and Willi Meier
Type of algorithm : Synchronous Stream Cipher
Proposed Environment : Profile 2 (HW)
Algorithm description :
- Article : Grain - A Stream Cipher for Constrained Environments, pdf
- Article : A Stream Cipher Proposal: Grain-128, pdf
- C source : Grainv1 zip, Grain-128 zip
- API-compliant C code: link
Changes compared to phase 1 : Grain has been tweaked to enter phase 2 of eSTREAM, and the new versions are called Grainv1 and Grain-128 by the authors. The archived page with the results on the old version can be found here.
Cryptanalysis:
- Ozgul Kucuk, "Slide Resynchronization Attack on the Initialization of Grain 1.0", ps.