@article{MAKHILLJEAS2019141918515,
    title = {Weaknesses of Anonymous Mutual Authentication Schemes for
Roaming Service with Smart Cards},
    journal = {Journal of Engineering and Applied Sciences},
    volume = {14},
    number = {19},
    pages = {7013-7019},
    year = {2019},
    issn = {1816-949x},
    doi = {jeasci.2019.7013.7019},
    url = {https://makhillpublications.co/view-article.php?issn=1816-949x&doi=jeasci.2019.7013.7019},
    author = {Younsung},
    keywords = {Roaming service,authentication scheme,mutual authentication scheme,guessing attack,anonymity,scheme},
    abstract = {In wireless communications, various anonymous mutual authentication schemes use public key
cryptosystems to provide secure roaming service but are not computationally efficient. Guo et al., first,
proposed an efficient mutual authentication protocol providing user anonymity and using smart cards but this
scheme has security weaknesses. Liu et al. attempted to address this by proposing a mutual authentication
scheme in wireless communications with anonymity for roaming service with smart cards in wireless
communications but this scheme still has security vulnerabilities. The present study demonstrates security
problems of mutual authentication scheme: it is vulnerable to offline password (and identity) guessing attack
does not provide perfect forward secrecy is vulnerable to DoS attack and provides weak anonymity.}
    }