Identifying an approach to safeguard the security of digital media has become more and more common as it grows. A useful technique for sending pictures safely is available in the discipline of visual cryptography (VC). A visual cryptography method is a cryptographic approach that enables the encryption of visual data (such as written text, handwritten notes, and photographs) so that the human visual system (HVS) can decrypt it on its own without the assistance of computers. Since the shares do not disclose anything regarding the secret image on their own, they are protected. One unique feature of the visual cryptography technique is the ability to see and decode the hidden picture through the process of overlaying shares. If shares are transmitted sequentially via the network, a third party can readily attain the secret image by exploiting this attribute. The visual cryptography method for color images shown in this article encrypts the shares that are created once more. This will give the secret documents twofold security because the XOR method is employed. Therefore, opponents attempting to construct false shares cannot access secret shares in their genuine form. The idea of halftoning is also utilized in the suggested plan.

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A Successful Approach to an Improved Visual Cryptography Scheme for Color Images with HVC

  • B. Revathi,
  • E. Lakshmi Prasanna,
  • Yedlla Satyam,
  • Saggurthi Kiran,
  • K. Archana,
  • M. Saranya

摘要

Identifying an approach to safeguard the security of digital media has become more and more common as it grows. A useful technique for sending pictures safely is available in the discipline of visual cryptography (VC). A visual cryptography method is a cryptographic approach that enables the encryption of visual data (such as written text, handwritten notes, and photographs) so that the human visual system (HVS) can decrypt it on its own without the assistance of computers. Since the shares do not disclose anything regarding the secret image on their own, they are protected. One unique feature of the visual cryptography technique is the ability to see and decode the hidden picture through the process of overlaying shares. If shares are transmitted sequentially via the network, a third party can readily attain the secret image by exploiting this attribute. The visual cryptography method for color images shown in this article encrypts the shares that are created once more. This will give the secret documents twofold security because the XOR method is employed. Therefore, opponents attempting to construct false shares cannot access secret shares in their genuine form. The idea of halftoning is also utilized in the suggested plan.