User Authentication based on Dynamic Keystroke Recognition

1. Introduction

The word “Biometric” is an ancient Greek word which referees to bio means “life” and metric means “measure” (Babaeizadeh et al., 2015). Biometric authentication supports three important factors of information security system. These factors are authentication, identification, and non-repudiation (Smith et al., 2013). Authorization and Authentication (Emam, 2013) are kind of security and privacy issues of biometric authentication system. However, a lot of research discussed this problem and tried to introduce many solutions to decrease the gap among security, authentication and security environment which prevents the spread of that technology. Biometrics (Jaiswal et al., 2011) is a set of technologies based on the measurement of unique behavioral or physical characteristics for the purpose of identifying or authentication an individual (Bandara et al., 2015).

Biometric authentication systems (BAS) are believed to be the effective technologies compared to the traditional authentication methods such as passwords, tokens and PINs (Tin, 2015) that failed to keep up with the challenges presented because they can be stolen or lost (Babaeizadeh et al., 2015), this means infirm security system. Authentication types can be classified under three different security field (Liu et al., 2001) such as Table 1 shows an overview of different authentication approaches:

• Something you Know: Something only you remember like password, PIN, or a piece of personal information such as (where are you born?) and knowledge approaches.

• Something you Have: Something only you possess such as a Smart card, Card key or a token approaches like a secure – ID card.

• Something you Are: Some biometric property.

• Combinations: (Multiple factors)