Biometric cryptosystems: Open issues and challenges

Key management, particularly, biometric cryptosystem is an exciting field in the system security domain. The challenges associated with this domain need to be addressed in detail since the security of the biometric template is itself a big challenge. Biometric template once lost or copied cannot be changed like simple password. This paper summarizes and discusses major challenges of biometric cryptosystem; categorization of the attacks and their known remedies has also been highlighted.