Enhanced Biometric Recognition for Secure Authentication Using Iris Preprocessing and Hyperelliptic Curve Cryptography

Algorithm 7: Proposed Iris Template Encryption (ITE).

 Input: Original iris template I

 Output: Encrypted iris template I’

 Process:

 Choose genus 2 HEC using ECM

 Convert original iris template to points in HEC

 Convert all the points of HEC to divisors using PDC

 Select random divisor e11 based on algorithm RCD

 Select public key

 For each 4 consecutive samples (I1, I2, I3, I4) do

 Form randomized divisor e1 using algorithm RCD

 Calculate using DACA

 Return all computed cipher divisors.

 Convert cipher divisors to cipher points using DPC

 Convert cipher points to cipher template

 Store cipher template in database

Algorithm 7: Proposed Iris Template Encryption (ITE).