@mastersthesis{
    HakalaMsc,
    author = "Hakala, Risto",
    school = "Helsinki University of Technology, Department of Computer Science and Engineering, Laboratory for Theoretical Computer Science",
    title = "Linear Cryptanalysis of Two Stream Ciphers",
    flags = "copy public CRYPTO",
    year = "2007",
    pdf = "HakalaMsc.pdf",
    type = "Master's Thesis"
}