Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2015.773.782KhalafEmad TahaSulaimanNorrozila52015155The security of templates is the critical part of biometric system and one
of the most crucial issues in any proposed system. In fact, features such as
voice, face, fingerprints and many others can be covertly acquired or stolen
by an attacker and misused. Therefore, storing biometric templates a secure
way is crucial. This study proposes a novel approach that combines an improved
encryption method with a new concealment technique to establish a secure data
template storing system. The Hill Cipher algorithm has been improved to be more
secure by using a large and random key with large data block and also extending
it to include the special characters. In the other hand a new concealment method
proposed by combine two of the popular methods DWT and DCT for embedding and
extraction the secret data in order to compensate the drawbacks of both of them
and to make the hidden information much more secure against the attacks, wavelet
transform which use dyadic filters to decompose cover image into 4-levels (HH,
HL, LH and LL) and discrete cosine Transforms to convert a signal of the selected
coefficients (HH, HL and LH) into elementary frequency components then according
to the percentages entering by a user the encrypted data will distribute. The
efficiency of encryption and concealment have been checked out with a number
of widely used metrics such as Peak Signal to Noise Ratio (PSNR) and Normalized
Correlation Coefficient (NCC).]]>Griaule Biometrics,2012Malhotra, S. and C. Kant,2013Hill, L.S.,1929Saeednia, S.,2000Monrose, F., M.K. Reiter and S. Wetzel,1999Uludag, U., S. Pankanti, S. Prabhakar and A.K. Jain,2004Monrose, F., M.K. Reiter, Q. Li and S. Wetzel,2001Monrose, F., M.K. Reiter, Q. Li, D.P. Lopresti and C. Shih,2002Jain, A.K. and U. Uludag,2003Wang, N., C. Zhang, X. Li and Y. Wang,2010Sonsare, P.M. and S. Sapkal,2011Ntalianis, K., N. Tsapatsoulis and A. Drigas,2011Kharge, S.M., L.M. Deshpande and S.S. Kanade,2013Amritha, G. and V. Meethu,2013Macq, B.M. and J.J. Quisquater,2005Kolpatzik, B.W. and C.A. Bouman,1992Kumar, P.M. and K.L. Shunmuganathan,2010Ramani, K., E.V. Prasad, S. Varadarajan and A. Subramanyam,2008Wang, C.M. and Y.M. Cheng,2005Lu, C.S. and H.Y.M. Liao,2001Peng, Y.Z., Q. Chen and L. Zhou,2004Cheddad, A., J. Condell, K. Curran and P. McKevitt,2008Overbey, J., W. Traves and J. Wojdylo,2005