A Novel Biometric Cryptosystem Using LDPC and SHA Based Iris Recognition

Provided by: International Journal of Applied Information Systems (IJAIS)
Topic: Security
Format: PDF
The authors use Low Density Parity Check (LDPC) error correction code to solve fuzziness i.e., the variability and noise in iris code generated from Iris Recognition System (IRS) and Secure Hash Algorithm (SHA-512) to transform unique iris code into hash string to make them as a cancellable biometric. SHA-512 hash string is used as a key for 512 bits Advanced Encryption Standard (AES) encryption process. In the decryption process, Hash comparison is made between new hash generated by SHA-512 from error corrected iris code and hash stored in smart card.

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