@inproceedings{
    chonyberg2011,
    author = "Cho, Joo Yeon and Nyberg, Kaisa",
    corerank = "NA",
    url = "http://skew2011.mat.dtu.dk/proceedings/Improved%20Linear%20Cryptanalysis%20of%20SMS4%20Block%20Cipher.pdf",
    booktitle = "Symmetric Key Encryption Workshop 2011 (SKEW 2011) Lyngby, Denmark, 16-17 February 2011",
    title = "Improved Linear Cryptanalysis of {SMS4} Block Cipher",
    year = "2011",
    impactfactor = "A4"
}