Radio Frequency IdentificationSecuring Your Personal Information

November 10, 2005

What is RFID?

Radio Frequency Identification1. RF Transmitter & Reader

2. RFID-Enabled Transponder

RF Transmitter broadcasts signal

RFID-Enabled

Transponder

RF Transmitter

& Reader

Signal

RFID Data

RFID in the Marketplace

RFID technology is present in many areas of business1 “Blink” credit card processing

Image provided by: JP Morgan Chase & Co.

RFID in the Marketplace

RFID technology is present in many areas of business1 “Blink” credit card processing

2 Employee identification

Image provided by: RFID USA

RFID in the Marketplace

RFID technology is present in many areas of business1 “Blink” credit card processing

2 Employee identification

3 US Passports

Image provided by: US Department of State

Security Standards

RFID uses basic hash table encryption3 RF Transmitters can be easily replicated

4 Transponders can be activated unintentionally

RFID-Enabled

Transponder

RF Transmitter

& Reader

1. Transponder Activation Signal

2. Encrypted DataCard Number: 54485891230985648923098435709634098234579523

Linear Probing

Image provided by: http://www.cs.umu.se/~jopsi/dinf504/hashing_probe.gif

Double Hashing

RFID uses basic hash table encryption3 RF Transmitters can be easily replicated

4 Transponders can be activated unintentionally

RFID-Enabled

Transponder

RF Transmitter

& Reader

1. Transponder Activation Signal

2. Encrypted DataCard Number: 5485891230985648923098435709634098234579523

Key mod 5 Key mod 20

Double Hashing

H1(key) = Key mod 5

H2(key)Key mod 20

2 * (Key mod 20)3 * (Key mod 20)4 * (Key mod 20)

[H1(key) +i*H2(key)] % M

Image provided by: http://www.cs.umu.se/~jopsi/dinf504/hashing_probe.gif

Questions