Enhancing the Security of Aadhar Cards using Blockchain and Steganography

In this paper we propose a novel approach to enhance the security of Aadhar cards generated by the unique identification authority of India (UIDAI) using blockchain technology implemented with steganography. Here we use steganographic techniques to embed a certain immutable, encrypted secret image on the pre-existing Aadhar card template with the Aadhar data that is collected while first issuing the card to produce a new “Steg-Aadhar” (steganographic Aadhar) which can then be converted into an NFT which will be uploaded onto the IPFS for storage. On doing so, a unique identifier, content identifier (CID) is generated which can be used to verify the Aadhar card later on. This method will help tackle the issues of fake Aadhar cards and malicious people trying to impersonate Aadhar individuals thus ensuring the smooth implementation of banking and government welfare schemes for the masses.