@misc{cryptoeprint:2015:656,
    author = {Ruhul Amin and G.P. Biswas},
    title = {Cryptanalysis of a Markov Chain Based User Authentication Scheme},
    howpublished = {Cryptology ePrint Archive, Report 2015/656},
    year = {2015},
    url = {https://eprint.iacr.org/2015/656},
}