The security is also part of biometric systems. Kaul and
Sheikh [7] have proposed data security for end-to-end
transmission, which is achieved by many different symmetric
and asymmetric techniques for message confidentiality,
message authentication and key exchange using transport layer
security. They proposed combination of two symmetric
algorithms AES and Blowfish to enhance security. AES is
enhanced by modifying the S-boxes, columns, and then
combination of enhanced AES and blowfish is used for data
confidentiality. Message digest 5 is used for authentication.
Key exchange is done using ECDHA, Elliptic Curve Diffe-
Hellman algorithm. Security into proposed architecture is
achieved by integrating this approach for end–to-end
encryption of biometric traits captured by enrollment node.