eSTREAM - The ECRYPT Stream Cipher Project

Polar Bear

This is the archived eSTREAM Phase 1 page of Polar Bear. For the latest information on Polar Bear, please go to the eSTREAM Phase 2 page on Polar Bear here.

Submitters : Johan Håstad and Mats Näslund
Type of algorithm : Synchronous Stream Cipher
Proposed Environment : Profile 1 (SW) and 2 (HW)
Algorithm description :
- Article : pdf
- C source : zip
Cryptanalysis:
- John Mattsson, "A Guess-and-Determine Attack on the Stream Cipher Polar Bear", pdf.
- Mahdi Hasanzadeh, Elham Shakour and Shahram Khazaei, "Improved Cryptanalysis of Polar Bear", pdf