Finger Vein Secure Authentication Scheme Based On Chaotic System

With the development of the Internet of Thing,artificial intelligence and cloud computing,the total amount of the information data has increased sharply,and the exchange of the information data has become more frequent.As for the biometric-based authentication system,protecting biometric feature information from attacks is the key of ensure the system security.How to create an authentication scheme with feasibility,robustness,integrity and security is a hot issue for us to study and explore.In this thesis,we focus on the protection of the finger vein feature information,and propose two finger vein secure authentication schemes based on chaotic systems.The main research contents mainly include the following aspects.(1)The thesis summarizes the biometric-based authentication technology and the biometric encryption technology,including introduces their working principles and characteristics,illustrates the advantages and problems of the biometric-based authentication technology,compares the performances of various biometric-based authentication technologies,and analyses a specific scheme of the biometric encryption technology.(2)The thesis describes chaotic system,illustrates the discriminant method of chaotic system,summarizes several innovative encryption schemes based on chaotic system and analyses the security of one scheme,illustrates its shortcomings.In addition,the thesis describes the expressions of the Chebyshev chaotic system and the Chen’s chaotic system,and analyses their characteristic and application scenarios in detail.(3)Aiming at the information protection of the finger vein global feature template,a secure authentication scheme based on Chen’s chaotic system and finger vein auxiliary data is proposed.The operation of shuffling the pixel positions of the finger vein feature template and the operation of encrypting the pixel values of the finger vein feature template are realized.In order to solve the problem that the initial values of the Chen’s chaotic system will affect the recognition rate in the authentication phase,the scheme regenerates the encryption matrix by matching the centroid position of the finger vein image.The experimental results show that the scheme has lower false rejection rate(FRR)and false recognition rate(FAR),and has a large key space.Moreover,it can resist the statistical analysis attack,correlation coefficient analysis attack and the known-plaintext attack.(4)Aiming at the information protection of the finger vein feature minutiae,a finger vein secure authentication scheme based on Chebyshev chaotic map and fuzzy vault is proposed.The scheme regards the Chebyshev sequence as the auxiliary data for secret key generation,and combines theauxiliary data with user password to finish the operation of the key generation and matching.The scheme also achieves the function of secondary authentication by matching the Chebyshev sequence with the polynomial coefficients.The experimental results show that the scheme can resist CRC collision attack and blended substitution attack.In addition,the scheme has a lower false recognition rate(FRR)when the degree of selected polynomial increases.