@misc{cryptoeprint:2016:806,
    author = {Mohammad Hadi Valizadeh},
    title = {Healing the Hill Cipher, Improved Approach to Secure Modified Hill against Zero-plaintext Attack },
    howpublished = {Cryptology ePrint Archive, Report 2016/806},
    year = {2016},
    url = {https://eprint.iacr.org/2016/806},
}