Presentation By 1) Omkar Salunke2) Shweta Singh3) Pranay Dhamal4) Kuldeep Ruletiya

REMOTE AUTHENTICATION VIA BIOMETRICS:A VIDEO-OBJECT STEGANOGRAPHIC

MECHANISM OVER WIRELESS NETWORKS

Mahatma Education Society

Pillai HOC College of Engg. & Tech., RasayaniDepartment of Computer Engineering

Guidance ByProf. Govind Rao Mettu

CONTENT1) Introduction2) Existing method3) Proposed method4) RSA Encryption algorithm5) PCA Algorithm6) DWT Algorithm7) System Architecture8) Advantages9) Conclusion10) References

INTRODUCTION

1. Sensitive information exchange authentication.

2. Visual authentication with Video and audio.3. RSA (Rivest, Shamir & Adleman).4. PCA (Principal component Analysis).5. DWT (Discrete Wavelet Transform).6. IDWT (Inverse Discrete Wavelet Transform).

EXISTING METHODSRemote Authentication • In “password authentication with insecure

communication” by Lamport scheme a verification table should be maintain on the remote server and if intruders break into it, they can modify the table.

• Another remote user authentication scheme involves smart card using dynamic users identities per transaction section.

• Biometrics are used simply as an authentication tool in smart card technology.

EXISTING METHODS (CONT…)

Steganographic Method• Steganographic includes two method:

• Digital compression transform (DCT) • Digital wavelet transform (DWT)

• DCT & DWT related with popular digital images & video compression scheme(i.e.,JPEG,MPEG,JPEG-2000,H264).It is used for hiding data’s.

• Using DCT & DWT steganographic message can be send in lossy environment, with some robustness against detection or attack.

PROPOSED METHOD• Biometric encryption using RSA algorithm.• Employ wavelet based steganography.• Encrypt Biometric Signal to allow for natural

authentication.• Involves a RSA encryption to increase security.• The encrypted biometric signal is hidden in a VO, which

can reliably be detected in modern applications that involve teleconferencing.

RSA ALGORITHM

• RSA is an algorithm used by modern computers to encrypt and decrypt messages.

• It is an Asymmetric algorithm.

RSA ALGORITHM (CONT…)• Choose two large prime numbers P & Q.

• Calculate N=P*Q.

• Select the public key (i.e., the encryption key) E, such that it is not a factor of (P-1)&(Q-1).

• Select the private key (i.e., the decryption key) D, such that the following equation is true: (D*E) mod (P-1)*(Q-1)=1

• For encryption calculate the cipher text CT from the Plane text PT as follows: CT=PTE mod N

• Send CT as the Cipher Text to the receiver.

• For Decryption, Calculate the Plane Text PT from the Cipher Text CT as follows: PT=CTD mod N

PRINCIPAL COMPONENT ANALYSIS (PCA)

• PCA is a standard technique for visualizing high dimensional data & for data pre-processing.

• PCA reduce the dimensionality(the number of variables) of a data set by maintaining as much variance as possible.

• Advantage of PCA:

• Reduce complexity in image grouping with the use of PCA.

• Reduction of noise since the maximum variation.

• Lack of redundancy of data given the orthogonal component.

• Dis-advantage of PCA:

• The covariance matrix is difficult to be evaluated in an accurate manner.

DISCRETE WAVELET TRANSFORM (DWT)

• The wavelet transform has gained wide spread acceptance in signal processing and image compression.

• DWT decomposes signal into basic function, this function is known as wavelet transform.

• The DWT has been introduced as a highly, efficient and flexible method for sub band decomposition of signal.

• Three level decomposition for 2D-DWT image consist of pixels that are arranged in 2D matrix, each pixel represents the digital equivalent of image intensity.

SYSTEM ARCHITECTURE

SYSTEM ARCHITECTURE (CONT...)

Assuming that user X wants to be remotely authenticated, first of all X’s video object (VO) is automatically segmented, using a head and body detector. Next, one of X’s biometric signal is encrypted by a RSA Algorithm. Afterwards the encrypted signal is inserted to the most significant wavelet coefficients of a video object, using its DWT (Discrete Wavelet Transform). DWT provide both invisibility and significant resistance against lossy transmissions and compressions, conditions that are typical in wireless networks. Finally, The Inverse Discrete Wavelet Transform (IDWT) is entreated to provide the stego-object (SO).

Video Selected By Sender

Watermarked Video Send to Receiver

Fingerprint Matching and Authentication

Retrieved Video By Receiver

ADVANTAGES

• Better and Increased security.• Better against deciphering, noise and compression.• Ease of implementation.• Encrypt biometric signal allow natural authentication.

SOFTWARE AND HARDWARE• Software Requirements• Front end : Matlab (v8.2.0.701) R2013b• Back end : Matlab (v8.2.0.701) R2013b• Operating System : Windows 10 (32bit)

• Hardware requirements• Processor : Intel(R) Core(TM) i3-2348M CPU

@1.70GHz• Ram : 2GB• Hard Disk Capacity : 160GB

CONCLUSION

• Urgent need to further develop and integrate biometric authentication techniques.

• The use of PCA and DWT provides high levels of Image Processing.

• Efficient bandwidth usage.• System is able to recover the hidden encrypted

biometric signals under different losses.• The hash value of a biometric identifier is utilized, so

that there is a centralized authentication service.

REFERENCE• L. Lamport, “Password authentication with insecure

communication,” Communications of the ACM, vol. 24, no. 11, pp. 770–772, 1981.

• W. Stallings, Cryptography and Network Security: Principles and Practices. Prentice-Hall, 5th edition, Upper Saddle River, NJ, USA, 2010.

• Y.-y. Wang, J.-y. Liu, F.-x. Xiao, and J. Dan, “A more efficient and secure dynamic id-based remote user authentication scheme,” Computer Communications, vol. 32, no. 4, pp. 583–585, Mar. 2009.

REFERENCE• M. K. Khan, S.-K. Kim, and K. Alghathbar,

“Cryptanalysis and security enhancement of a ‘more efficient & secure dynamic id-based remote user authentication scheme’,” Computer Communications, vol. 34, no. 3, pp. 305–309, Mar. 2011.

• E.-J. Yoon, S.-H. Kim, and K.-Y. Yoo, “Cryptanalysis and security enhancement of a ‘more efficient & secure dynamic id-based remote user authentication scheme’,” International Journal of Innovative Computing, Information and Control, vol. 8, no. 5(B), pp. 3661–3675, May 2012.

Thank you !