Sensitive Information Protection and Recovery Using One to One Compound Mapping

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With rapid developments in software and hardware technology, nowadays documents are scanned and stored in Internet connected systems. Scanned images hold lot of confidential information. It is essential to protect sensitive information like Credit card number, Social security number, Medical reports etc. from unauthorized access. In this paper, a scheme is proposed to protect such images based on visible watermarking and encryption techniques. With this scheme, sensitive information in an image will be made unreadable with mask image using one-to-one compound mapping. The compound mappings are proved to be reversible, which allows for lossless recovery of original images from protected image. The mask image generation is discussed. This work is implemented in MATLAB
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Lossless Recovering; Mask Generation; Multiple Region Masking; One-To-One Compound Mapping; Reversible Mapping; Scrambling

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