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Hassan, Mehmood, Mansoor, Khwaja, Tahir, Shahzaib, Iqbal, Waseem.  2019.  Enhanced Lightweight Cloud-assisted Mutual Authentication Scheme for Wearable Devices. 2019 International Conference on Applied and Engineering Mathematics (ICAEM). :62–67.
With the emergence of IoT, wearable devices are drawing attention and becoming part of our daily life. These wearable devices collect private information about their wearers. Mostly, a secure authentication process is used to verify a legitimate user that relies on the mobile terminal. Similarly, remote cloud services are used for verification and authentication of both wearable devices and wearers. Security is necessary to preserve the privacy of users. Some traditional authentication protocols are proposed which have vulnerabilities and are prone to different attacks like forgery, de-synchronization, and un-traceability issues. To address these vulnerabilities, recently, Wu et al. (2017) proposed a cloud-assisted authentication scheme which is costly in terms of computations required. Therefore this paper proposed an improved, lightweight and computationally efficient authentication scheme for wearable devices. The proposed scheme provides similar level of security as compared to Wu's (2017) scheme but requires 41.2% lesser computations.
Iftikhar, Jawad, Hussain, Sajid, Mansoor, Khwaja, Ali, Zeeshan, Chaudhry, Shehzad Ashraf.  2019.  Symmetric-Key Multi-Factor Biometric Authentication Scheme. 2019 2nd International Conference on Communication, Computing and Digital systems (C-CODE). :288–292.
Authentication is achieved by using different techniques, like using smart-card, identity password and biometric techniques. Some of the proposed schemes use a single factor for authentication while others combine multiple ways to provide multi-factor authentication for better security. lately, a new scheme for multi-factor authentication was presented by Cao and Ge and claimed that their scheme is highly secure and can withstand against all known attacks. In this paper, it is revealed that their scheme is still vulnerable and have some loopholes in term of reflection attack. Therefore, an improved scheme is proposed to overcome the security weaknesses of Cao and Ge's scheme. The proposed scheme resists security attacks and secure. Formal testing is carried out under a broadly-accepted simulated tool ProVerif which demonstrates that the proposed scheme is well secure.