a fingerprint bio-cryptosystem to mitigate fingerprint uncertainity in

8/10/2019 A Fingerprint Bio-cryptosystem to Mitigate Fingerprint Uncertainity In

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A FINGERPRINT BIO-CRYPTOSYSTEM TO

MITIGATE FINGERPRINT UNCERTAINITY IN

MODIFIED VORONOI NEIGHBOR

STRUCTURES


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INTRODUCTION

Machine learning: deals with the construction and study ofsystems that can learn from data, rather than follow onlyexplicitly programmed instructions

Pattern recognition:

The assignment of a physical object orevent to one of several pre-specified categories

A patternis an object, process or event that can be given aname.

A pattern class(or category) is a set of patterns sharingcommon attributes and usually originating from the samesource.

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CONT

During recognition(or classification) given objects are assigned to

prescribed classes

A classifieris a machine which performs classification

Examples of application

Biometrics

Military Applications

Diagnostic systems

Optical character recognition

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CONT

BIO-CRYPTOGRAPHY

Bio-cryptography combines cryptography with bio-metrics

Bio-cryptosystems provide security

i)securing the cryptographic key using biometric features

ii)Generating the cryptographic key directly from biometrics

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OBJECTIVE

To design an alignment-free bio-cryptosystem based on modified

voronoi neighbor structures

To provide local structural stability and distortion insensitivity.

The proposed system is able to provide good security and high

recognition rate.

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RELATED WORKS

K.Nandakumar,A.K.Jain,S.Pankanti,Fingerprint based fuzzy

vault: implementation and performance,IEEE transactions on

Information Forensics and security,Pg no:744-757,Vol:2,2007

Problem: To protect the fingerprint template of a user typicallystored in a database or a smart card

Solution: Fuzzy vault scheme protects both secret key and biometric

template

Disadvantage: Alignment of query fingerprint with template is a

challenging task

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W.Yang,J Hu,S.Wang,A Delaunay Triangle-Based Fuzzy

Extractor for Fingerprint Authentication, Proceedings of the

IEEE 11thInternational conference on trust, security and Privacy in

Computing and Communications,Pg no:66-70,2012

New scheme: Registration-free Delaunay triangle based fuzzy

extractor

Fuzzy extractor consists of two primitives:

1.Secure sketch

2.Fuzzy Extractor

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K.Xi,J.Hu,F.Han,An alignment free fingerprint fuzzy extractor

using near equivalent dual layer structure check algorithm,

Proceedings of the IEEE Conference on Industrial Electronics and

applications,Pp:1040-1045,2011

Problem: Feature alignment, Verification Accuracy, Information

Accuracy

Solution: Minutia local structure features: Dual layer structure check

New fuzzy extractor scheme based on NeDLSC

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Wencheng Yang et al,Analignment free bio-cryptosystem based

on modified voronoi neighbor structures,ELSEVIER,1309-

1320,Vol no:47,2013

Problems: Fingerprint uncertainty caused by distortion ,rotation andpre-alignment

Solution:Voronoi neighbor structures provide local structural

stability and distortion insensitivity

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SYSTEMMODEL

Preprocessing &

minutiae

extraction

Preprocessing

&minutiae

extractionPreprocessing &

minutiae

extraction

Formation of VNSs

Generation of modified

VNSs

Generation of fixed-length bit-

string representations

Encrypted Matching

Template

fingerprint

Query

Fingerprint

Match/Non-

match

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Orientation fieldestimation Fingerprint regionlocalizationSmoothing filter

Minutia

ExtractionThinning Ridge Detection

Fig: Flowchart of Pre-processing and Minutia Extraction

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Minutia

Extraction

Modified

VNSs3D array

Template

features

Secure

Sketch

Sketched

data set

Secure

Sketch(SS)

B_VNST

i

SS(B_VNS )T

i

Secret

Key

Hash

Key Binding

Polynomial

Fig :The Encoding Stage

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Minutia

Extraction

ModifiedVNSs

3D array Queryfeatures

Sketched

data set

Recover RecoveredFeature set

Secret Key

Recover

module

SuccessRec(B_VNSQj ,SB_VNSTi )

FailNext decoding attempt

B_VNSQ

j

SB_VNST

i

Key

Retrieving

Polynomial

reconstruction

Fig: The decoding Stage13


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TOOLS

Language: Java

JDK 8

Netbeans 8-IDE

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a fingerprint bio-cryptosystem to mitigate fingerprint uncertainity in

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