Abstract: In the current era of digitisation, digital documents are widely used. The merits of digital documents are huge while its security and privacy are at large. Hence Cryptography is used to secure digital documents. Cryptography is a method of storing and transmitting data in a particular form so that only those for whom it is intended can read and process it. In this paper a novel idea is proposed, digital documents are encrypted using 256- bit cryptographic key which is generated by multimodal biometric system. This system uses Palm print and Fingerprint as traits. The features of both traits were extracted and fused at feature level. This biometric based cryptographic key is unpredictable to an intruder as the intruder lacks the knowledge of physical traits of the user. By this proposed model confidentiality, integrity, availability mechanisms are achieved. This biometric based cryptographic security can be integrated to e-governance and e-health for efficient management.

Keywords: Securing digital documents, to stop fraudulent activities, palm print, fingerprint, Impossible to forge, Impossible to counterfeit secured data, multimodal biometric system, cryptographic security, e-governance, e-health