Multibiometric Based Secure Encryption and Authentication Scheme with Fuzzy Extractor

Encryption and authentication schemes suffice for the security ofinformation stored or exchanged by different parties, but securekey generation and distribution is a highly non-trivial matter incryptography. Fuzzy extractor is a security primitive, which canbe used to encrypt and authenticate a message using his biometric$b'$ to reproduce extraction of an almost uniformly key fromnon-uniform source such as fingerprint and iris, voice sample etc,is allowed to decrypt ciphertexts created by biometric $b$, if andonly if the two sets $b$ and $b'$ are close to a measuredset-overlap-distance metric. Biometric security systems are beingwidely used for the maximum level of security requirements becauseof the unique of participant's biometric characteristic. In thispaper, it proposes a novel multiple biometric based encryption andauthentication scheme that provides confidentiality,undeniability, unforgeability and verifiability. It employsmultiple biometrics to encrypt the message, and with the help ofpublic value produced by fuzzy extractor it can reproduce thesecure key from distinction biometric to decrypt the ciphertext.It also gives the security analysis including semantic secure andunforgeable in the random oracle model.