Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Robust Password-Based Multi-Server Authentication Scheme   In 2013, Tsai et al. cryptanalyzed Yeh et al. scheme and shown that Yeh et
al., scheme is vulnerable to various cryptographic attacks and proposed an
improved scheme. In this poster we will show that Tsai et al., scheme is also
vulnerable to undetectable online password guessing attack, on success of the
attack, the adversary can perform all major cryptographic attacks. As apart of
our contribution, we have proposed an improved scheme which overcomes the
defects in Tsai et al. and Yeh et al. schemes.

9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org