Robust Biometric Key Extraction Based on Iris Cryptosystem

  • Long Zhang
  • Zhenan Sun
  • Tieniu Tan
  • Shungeng Hu
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5558)

Abstract

Biometric cryptosystem can not only provide an efficient mechanism for template protection, but also facilitate cryptographic key management, thus becomes a promising direction in information security field. In this paper, we propose a robust key extraction approach which consists of concatenated coding scheme and bit masking scheme based on iris database. The concatenated coding scheme that combines Reed-Solomon code and convolutional code is proposed so that much longer keys can be extracted from the iris data, while the bit masking scheme is proposed to minimize and randomize the errors occur in the iris codes, making the error pattern more suitable for the coding scheme. The experiment results show that the system can achieve a FRR of 0.52% with the key length of 938 bits.

Keywords

Biometrics cryptography iris code key binding concatenated coding scheme Reed-Solomon code convolutional code bit masking scheme 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Long Zhang
    • 1
  • Zhenan Sun
    • 2
  • Tieniu Tan
    • 2
  • Shungeng Hu
    • 1
    • 3
  1. 1.Center for Intelligence Science and Technology ResearchBeijing University of Posts and TelecommunicationsBeijingChina
  2. 2.Center for Biometrics and Security Research, National Laboratory of Patten Recognition, Institute of AutomationChinese Academy of SciencesBeijingChina
  3. 3.China Netcom Group LabsBeijingChina

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