Abstract
In the digital transparent world, share the secret messages are challenged one. Visual cryptography (VC) is safer method for information transfer without any distraction by hackers. It is giving more security to the information sharing through digital form. This method hides the messages into images. So intruder cannot understand the distorted image and the data communication become secured. Through VC method number of shares has been generated from the original images. So here each RGB pixel shares are separately created by Visual Secret Share (VSS) scheme. The created multiple shares of the secret images are encrypted and decrypted with RSA algorithm. In the encryption process the multiplication technique is used for key generation process and public key is used for encryption process and private key is used for decryption process. Secret image’s quality has been compared through the Peak Signal to Noise Ratio (PSNR) and Mean Square Error (MSE) values. The experimental result of decrypted image PSNR value is 156.32 and MSE value is 0.5031. The Number of Changing Pixel Rate (NPCR) and Unified Averaged Changed Intensity (UACI) values are compared for the secure level of the secret image. The result of decrypted image NPCR value is 69.44 and UACI value is 13.88. Finally, the experiment result shows that the proposed method is giving more security and quality of secret image sharing and also execution time is faster than existing method.
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Karolin, M., Meyyappan, T. Authentic secret share creation techniques using visual cryptography with public key encryption. Multimed Tools Appl 80, 32023–32040 (2021). https://doi.org/10.1007/s11042-021-11202-6
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DOI: https://doi.org/10.1007/s11042-021-11202-6