Binary linear codes with at most 4 weights
  For the past decades, linear codes with few weights have been widely studied, since they have applications in space communications, data storage and cryptography. In this paper, a class of binary linear codes is constructed and their weight distribution is determined. Results show that they are at most 4-weight linear codes. Additionally, these codes can be used in secret sharing schemes. 
Fei Li, Yang Yan, Qiuyan Wang and Tongjiang Yan
cs.IT math.IT