A New Biometric Identity Based Encryption Scheme

In this paper, we present a new and efficient biometric identity based encryption scheme (BIO-IBE) using the Sakai Kasahara key construction and prove its security in the random oracle model based on the well-exploited k-BDHI computational problem. Our new scheme achieves better efficiency in terms of the key generation and decryption algorithms compared to the existing fuzzy IBE schemes. The main difference of the new BIO-IBE scheme is the structure of the key generation algorithm, where a unique biometric identity string ID obtained from the biometric attributes is used instead of picking a different polynomial for each user as in other fuzzy IBE schemes.