Bio-encryption is a concept that aims to improve
the traditional cryptographic security by combining biometrics
and cryptography. Fuzzy Vault scheme is a bio-encryption
method which is very famous for its ability to handle fuzzy
biometric data while at the same time combines them with
cryptographic mechanism. Moreover, Fuzzy Vault scheme is
claimed as a bio-encryption method that can be deployed in
System-on-Chip (SoC) based security devices. One of the
requirements that must be fulfilled by a system that can be run
on SoC based devices is less resource consuming. In other words,
the system must have sufficient resource efficiency or must use
the fairly efficient algorithms. One of the important phases in the
Fuzzy Vault scheme is chaff point generation. Chaff points are
analogized as a noise used for covering valuable information
inside of Fuzzy Vault. Although the chaff point generation phase
is a quite important phase, it would be the phase that has the
highest computation level. Hence, research on chaff point
generation method to find efficient methods while maintaining
the security aspects of Fuzzy Vault Scheme became an interesting
topic in bio-encryption field for some researchers. This paper will
discuss and also will do some comparisons toward three current
chaff point generation methods that have been proposed by some
researchers. Thus, this paper is expected to contribute knowledge
about the characteristics of these three methods.
