Dissertation > Excellent graduate degree dissertation topics show

Research on Visual Cryptography Scheme for Cheating Prevention

Author: PengWenFang
Tutor: ChenQin
School: Hangzhou University of Electronic Science and Technology
Course: Computer Software and Theory
Keywords: Visual Cryptography Deceive Secret sharing Pixel expansion Pixel contrast
CLC: TN918.2
Type: Master's thesis
Year: 2011
Downloads: 26
Quote: 0
Read: Download Dissertation

Abstract


Visual cryptography rely on the human visual system directly decrypt secret sharing technology, the security strength equivalent to a \While most visual cryptography scheme assumes that the honest participants restore the secret will not cheat, but actually not all honest participants may produce forged Share to deceive other participants, in addition to illegal participants posing as legitimate participants may deceive, to destroy or secret information fraud. Therefore, the research and design anti-cheating visual cryptography scheme, has important theoretical significance and wide application value. The anti-spoofing visual cryptographic schemes commonly used verification images, by connecting different threshold visual cryptography program matrix is ??constructed to meet certain conditions, the fundamental matrix, and then share according to the structure of the fundamental matrix generated. In this way, anti-spoofing programs exist small the pixel expansion Japanese pixels contrast defects. In this paper, in-depth study visual cryptography type of deception and fraud, conspiracy to deceive public the verification image visual password exist, given a specific deceptive methods and simulation experiments. Pixel encoding method used in the multi-secret sharing technology fraud visual cryptography scheme to solve the public verification image visual cryptography scheme can not be applied to the case of the two participants, so that the participants share copies superimposed using different way to recover the secret image and verify image superimposed. Secondly, through analysis the private validation image GTCP (General Transformation for Cheating and Prevention) program verification matrix, it is pointed out that The validation matrix constructor exists a certain flaw that led to the program of internal deception, and gives specific deceptive methods. The through improved validation matrix construction method proposed visual cryptography scheme, and verify that the matrix of the existence of an anti-spoofing proved to have a higher level of security compared with GTCP program. Finally, by the fundamental matrix of the analysis and study of visual cryptography program, designed and implemented a new anti-spoofing own private verification image visual cryptography scheme. In order to make the program on the basis of anti-spoofing, optimize the pixel expansion and the pixel contrast, validation matrix should meet the specific conditions of its constructor. By combining each participant with the idea of ??private verification image based method to verify the fundamental matrix of the matrix structure program generated Share copies, according to the structure of the basis matrix, the secret image can be shared and private verification image. Compared with other anti-spoofing programs, the program more effectively avoid spoofing problem, reducing the number of connections of the basic matrix and the pixel expansion and improve the pixel contrast. Simulation results show that the effect of the program secret image and verify image restoration is better.

Related Dissertations

  1. Data Privacy-Preserving Schemes for Cloud Computing,TP393.08
  2. A Research on Trust Based Access Control in P2P Network,TP393.08
  3. Applied Research of the electronic voting system based on secure multiparty computation,TN918.2
  4. The Research of the LAN Exclusion from the External Network Devices,TP393.1
  5. Research on Group Key Management for Manet,TN929.5
  6. The Research and Execution of Secret Sharing Scheme of Ad Hoc Networks,TN929.5
  7. A Study about Some Knotty Problem of Extortion Crime,D924.35
  8. Research on Uniform Identity Authentication System Based on Visual Cryptography Techniques,TP393.08
  9. Research on Related Theories and Application of Subliminal Channel,TN918.1
  10. Research and Implementation of the program of secret sharing system,TN918.1
  11. Network coding and secret sharing scheme,TN911.2
  12. Research and Implementation of Image Secret Sharing Algorithm,TP391.41
  13. The Research on Image Secret Sharing,TN918
  14. Rearrangement Encryption Based on GHZ State for Quantum Key Distribution Protocal and the Security of a Quantum Secret Sharing,O431.2
  15. The Study of (k, n) Threshold Secret Sharing Scheme and Its Application,TN918.1
  16. A Method of Identifying Cheaters in Secret Sharing Schemes Based on Signcryption,TN918
  17. A Secret Sharing Scheme and a Ring Signature Based on the Trapdoor One-Way Function,TN918.1
  18. Hierarchical Threshold Secret Sharing System and Related Research,TN918.1
  19. Hidden based on the PE file format information technology research and,TP309
  20. Two types of secret sharing scheme,TN918.1

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Confidentiality of communications and communications security > Password, machine
© 2012 www.DissertationTopic.Net  Mobile