Privacy-preserving distance computation for IrisCodes

Privacy-preserving distance computation for IrisCodes

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In this chapter, we describe how to perform a secure and efficient IrisCode-based identification. In this use case, the first party has an IrisCode, the second party has one or several IrisCodes and they would like to discover whether the first party's IrisCode is close to at least one IrisCode belonging to the second party without revealing any information about their own IrisCodes to the opposing party. Secure Two-Party Computation (S2PC) protocols are dedicated to this use case because they enable two parties to jointly evaluate a function over their inputs while preserving the privacy of their inputs. In this chapter, we explain how to efficiently use S2PC protocols for secure iris-based identification.

Chapter Contents:

  • 15.1 Introduction
  • 15.2 Secure distance computation in the semi-honest model
  • 15.2.1 Oblivious transfer
  • 15.2.2 Yao's garbled circuits
  • 15.2.3 GSHADE in the semi-honest model
  • 15.2.4 Privacy-preserving distance computation for IrisCodes in the semi-honest model
  • Authentication in the semi-honest setting
  • Identification in the semi-honest setting
  • Performance
  • 15.3 Secure distance computation in the malicious model
  • 15.3.1 Yao's garbled circuits in the malicious setting
  • The cut-and-choose construction
  • The DualEx technique
  • 15.3.2 GSHADE in the malicious setting
  • 15.3.3 Privacy-preserving distance computation for IrisCodes in the malicious model
  • Authentication in the malicious setting
  • Identification in the malicious setting
  • Performance
  • 15.4 Application to other iris representations
  • 15.5 Conclusion
  • Acknowledgments
  • References

Inspec keywords: cryptographic protocols; iris recognition

Other keywords: IrisCode-based identification; S2PC protocols; secure two-party computation protocols; privacy-preserving distance computation

Subjects: Image recognition; Cryptography; Computer vision and image processing techniques; Protocols; Data security

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