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Key Management is the critical issue of a cryptographic system and it requires a better security mechanism. Bio-cryptology provides a strong solution for the said critical issue. Fuzzy vault scheme is a popular scheme to design bio-cryptosystems. Key is secured with the biometric data mixed up with some noise points known as chaff points in a secure storage i.e. vault. Generation of chaff points is the important part of the fuzzy vault system. This work is mainly aims to present an authentication scheme (Key matching) with reducing the complexities of chaff generation. In chaff generation, circle packing, geometrical hashing etc. techniques are used to protect the real data from the noisy data, but these techniques are complex. Here a novel method of chaff generation is used where newly generated chaff point compared with genuine points (stored in a dataset) to assure that it is different, hence genuine points are protected. Experimental results shows that our method have less complexity and performs better than other

Authentication scheme using novel chaff generation method in fuzzy vault