TY - GEN
T1 - Privacy-security tradeoffs in biometric security systems
AU - Lai, Lifeng
AU - Ho, Siu Wai
AU - Poor, H. Vincent
PY - 2008
Y1 - 2008
N2 - Biometric security systems are studied from an information theoretic perspective. A fundamental tradeoff between privacy, measured by the normalized equivocation rate of the biometric measurements, and security, measured by the rate of the key generated from the biometric measurements, is identified. The scenario in which a potential attacker does not have side information is considered first. The privacy-security region, which characterizes the above-noted tradeoff, is derived for this case. The close relationship between common information among random variables and the biometric security system is also revealed. The scenario in which the attacker has side information is then considered. Inner and outer bounds on the privacy-security region are derived in this case.
AB - Biometric security systems are studied from an information theoretic perspective. A fundamental tradeoff between privacy, measured by the normalized equivocation rate of the biometric measurements, and security, measured by the rate of the key generated from the biometric measurements, is identified. The scenario in which a potential attacker does not have side information is considered first. The privacy-security region, which characterizes the above-noted tradeoff, is derived for this case. The close relationship between common information among random variables and the biometric security system is also revealed. The scenario in which the attacker has side information is then considered. Inner and outer bounds on the privacy-security region are derived in this case.
UR - http://www.scopus.com/inward/record.url?scp=64549127364&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=64549127364&partnerID=8YFLogxK
U2 - 10.1109/ALLERTON.2008.4797566
DO - 10.1109/ALLERTON.2008.4797566
M3 - Conference contribution
AN - SCOPUS:64549127364
SN - 9781424429264
T3 - 46th Annual Allerton Conference on Communication, Control, and Computing
SP - 268
EP - 273
BT - 46th Annual Allerton Conference on Communication, Control, and Computing
T2 - 46th Annual Allerton Conference on Communication, Control, and Computing
Y2 - 24 September 2008 through 26 September 2008
ER -