Iris Ciphertext Authentication System Based on Fully Homomorphic Encryption
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With the application and promotion of biometric technology, biometrics has become more and more importantto identity authentication. In order to ensure the privacy of the user, the biometrics cannot be stored or manipulatedin plaintext. Aiming at this problem, this paper analyzes and summarizes the scheme and performanceof the existing biometric authentication system, and proposes an iris-based ciphertext authentication systembased on fully homomorphic encryption using the FV scheme. The implementation of the system is partlypowered by Microsoft’s SEAL (Simple Encrypted Arithmetic Library). The entire system can complete irisauthentication without decrypting the iris feature template, and the database stores the homomorphic ciphertextof the iris feature template. Thus, there is no need to worry about the leakage of the iris feature template. At thesame time, the system does not require a trusted center for authentication, and the authentication is completedon the server side directly using the one-time MAC authentication method. Tests have shown that when thesystem adopts an iris algorithm with a low depth of calculation circuit such as the Hamming distance comparisonalgorithm, it has good performance, which basically meets the requirements of real applicationscenarios.
Abstract
With the application and promotion of biometric technology, biometrics has become more and more importantto identity authentication. In order to ensure the privacy of the user, the biometrics cannot be stored or manipulatedin plaintext. Aiming at this problem, this paper analyzes and summarizes the scheme and performanceof the existing biometric authentication system, and proposes an iris-based ciphertext authentication systembased on fully homomorphic encryption using the FV scheme. The implementation of the system is partlypowered by Microsoft’s SEAL (Simple Encrypted Arithmetic Library). The entire system can complete irisauthentication without decrypting the iris feature template, and the database stores the homomorphic ciphertextof the iris feature template. Thus, there is no need to worry about the leakage of the iris feature template. At thesame time, the system does not require a trusted center for authentication, and the authentication is completedon the server side directly using the one-time MAC authentication method. Tests have shown that when thesystem adopts an iris algorithm with a low depth of calculation circuit such as the Hamming distance comparisonalgorithm, it has good performance, which basically meets the requirements of real applicationscenarios.
참고문헌 (21)
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