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Recently, Li and Hwang proposed a biometrics-based remote user authentication scheme using smart cards [Journal of Network and Computer Applications 33 (2010) 1–5]. The scheme is based on biometrics verification, smart card and one-way hash function, and it uses the nonce rather than a synchronized clock, so it is very efficient in computational cost.(More)
BACKGROUND The Janus kinase (JAK) family of tyrosine kinases includes JAK1, JAK2, JAK3 and TYK2, and is required for signaling through Type I and Type II cytokine receptors. CP-690,550 is a potent and selective JAK inhibitor currently in clinical trials for rheumatoid arthritis (RA) and other autoimmune disease indications. In RA trials, dose-dependent(More)
Recently, Kumari et al. pointed out that Chang et al.'s scheme " Untraceable dynamic-identity-based remote user authentication scheme with verifiable password update " not only has several drawbacks, but also does not provide any session key agreement. Hence, they proposed an improved remote user authentication Scheme with key agreement on Chang et al.'s(More)
Inhibitors of the JAK family of nonreceptor tyrosine kinases have demonstrated clinical efficacy in rheumatoid arthritis and other inflammatory disorders; however, the precise mechanisms by which JAK inhibition improves inflammatory immune responses remain unclear. In this study, we examined the mode of action of tofacitinib (CP-690,550) on JAK/STAT(More)
Recently, Yang et al. Proposed a remote user authentication scheme using smart card. Through careful cryptanalysis, we find that Yang et al.'s scheme is not repairable, and cannot achieve mutual authentication and session key agreement. To overcome these security flaws, we propose a new remote user authentication scheme with smart card. In the proposed(More)