Chebyshev Polynomial-Based Authentication Scheme in Multiserver Environment

Table 1

Notations used in the scheme [11].

Notations	Description
Ui, Sj, RC	i^th user, j^th server, registration centre
IDi, PWi	Identity and password of Ui
SIDj, CIDi	Sj’s identity, Ui’s dynamic identity
x, y	Master key and secret value of RC
h (.), ⊕, ||	Hash function, XOR, and concatenation
⇒/⟶	Secure/public channels