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Cheating Prevention in Visual Cryptography (Java)
IEE Transactions on Image Processing, Vol. 16, No. 1

Abstract:
Visual cryptography (VC) is a method of encrypting a secret image into shares such that stacking a sufficient number of shares reveals the secret image. Shares are usually presented in transparencies. Each participant holds a transparency. Most of the previous research work on VC focuses on improving two parameters: pixel expansion and contrast. In this paper, we studied the cheating problem in VC and extended VC. We con ....etc

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seminar reports on message encryption using cheating text

Message Encryption schemes currently being used encrypt the total message that needs to be transmitted. This project encrypts that part of the message which is confidential rather than the total message using the concept of cheating text. The concept of cheating text comes from Steganography, in particular data hiding. These ideas were initiated in a paper by Ch. Rupa and P.S. Avadhani. Plain text message is inserted into another text called the cheating text and the positions of the ch ....etc

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Abstract:
Secure distance-based localization in the presence of cheating beacon (or anchor) nodes is an important problem in mobile wireless ad hoc and sensor networks. Despite significant research efforts in this direction, some fundamental questions still remain unaddressed: In the presence of cheating beacon nodes, what are the necessary and sufficient conditions to guarantee a bounded error during a two-dimensional distance-based location estimation? Under these necessary and sufficient conditions, what class ....etc

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We believe that there s a new movement in connectedness coming. A new social system in the digital world that can actually help us feel closer to those who matter most in our lives. Where real friends can share real moments in real time. This is an opportunity at a global scale, and one that is the next logical step in the way we communicate, share, talk, and spend time together online.

That s why we are pioneering a new social experience, designed for togetherness. It s an intimate space for people to share conversations and content in rea ....etc

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Message Integrity and Message Authentication


MESSAGE INTEGRITY

The cryptography systems that we have studied so far provide secrecy, or confidentiality, but not integrity. However, there are occasions where we may not even need secrecy but instead must have integrity.

Topics discussed in this section

11.1 Document and Fingerprint
11.2 Message and Message Digest
11.3 Difference
11.4 Checking Integrity
11.5 Cryptographic Hash Function Criteria

Document and Fingerprint[/b ....etc

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