Skip to main content

Table 1 The notations

From: Biometrics based authentication scheme for session initiation protocol

Notation

Description

\(E\)

An elliptic curve with large order \(n\)

\(P\)

A generator on E with large order \(n\)

\(U_{i}\)

The user \(U_{i}\)

\(BIO_{i}\)

The user \(U_{i}\)’s biometrics

\(ID_{i}\)

The user \(U_{i}\)’s identity

\(pw_{i}\)

The user \(U_{i}\)’s password

\(S\)

The server \(S\)

\(x\)

The server \(S\)’s secret key

\(h()\)

A secure one-way hash function

‖

A string concatenation operation

\(\oplus\)

A exclusive-or(XOR) operation