Secret sharing is a scheme used to distribute secret among a group of users. Rather than making duplicated copies of secrets among users, the secret is divided into a number of pieces, called shares. The secret can be revealed if a certain number of user shares are combined. The method proposed here (i)utilizes bit-level decomposition and stacking operations to both encrypt and decrypt B-bit image, (ii) preserves all the features of traditional (k, n) sharing schemes, (iii) allows for perfect

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... construction of the input B-bit image, (iv) encrypts binary, gray-scale and color images, and (v) can be effectively implemented either in software or hardware. ‫ﺍﻟﺒﺘﺎﺕ‬ ‫ﻤﺴﺘﻭﻯ‬ ‫ﻋﻠﻰ‬ ‫ﻭﺍﻟﺘﺸﻔﻴﺭ‬ ‫ﺍﻟﻤﺭﺌﻲ‬ ‫ﺍﻟﺘﺸﻔﻴﺭ‬ ‫ﺒﻴﻥ‬ ‫ﻤﻘﺎﺭﻨﺔ‬ ‫ﻤﺸﺎﺭﻜﺔ‬ ‫ﻟﺨﻭﺍﺭﺯﻤﻴﺎﺕ‬ ‫ﺍﻻﺴﺭﺍﺭ‬ ‫ﺍﻟﺼﻭﺭ‬ ‫ﻟﺘﺸﻔﻴﺭ‬ ‫ﺍﻟﺨﻼﺼﻪ‬ ‫ﺍﺠـﺯﺍﺀ‬ ‫ﻋـﺩﺓ‬ ‫ﺍﻟـﻰ‬ ‫ﺍﻟﺴـﺭ‬ ‫ﺘﺠﺯﺌﺔ‬ ‫ﺍﻟﻰ‬ ‫ﺍﻻﺴﺭﺍﺭ‬ ‫ﻤﺸﺎﺭﻜﺔ‬ ‫ﺨﻭﺍﺭﺯﻤﻴﺎﺕ‬ ‫ﺘﻘﺘﺭﺡ‬) shares (‫ﻋﻨـﺩ‬ ‫ﺍﻟﺴﺭ‬ ‫ﺍﺴﺘﻌﺎﺩﺓ‬ ‫ﻴﻤﻜﻥ‬ ،‫ﺍﻟﻨﺴﺨﺔ‬ ‫ﻨﻔﺱ‬ ‫ﺘﻭﺯﻴﻊ‬ ‫ﻤﻥ‬ ‫ﺒﺩﻻ‬ ‫ﺍﻟﻤﺴﺘﺨﺩﻤﻴﻥ‬ ‫ﻤﻥ‬ ‫ﻤﺠﻤﻭﻋﺔ‬ ‫ﺍﻟﻰ‬ ‫ﻭﺘﻭﺯﻴﻌﻬﺎ‬ ‫ﺠ‬ ‫ﺘﻭﻓﺭ‬ ‫ﻤﻨﻬﺎ‬ ‫ﻤﺤﺩﺩ‬ ‫ﻋﺩﺩ‬ ‫ﺍﻭ‬ ‫ﺍﻻﺠﺯﺍﺀ‬ ‫ﻤﻴﻊ‬. ‫ﻋﻠـﻰ‬ ‫ﺘﻨﻔـﺫ‬ ‫ﺠﺩﻴﺩﺓ‬ ‫ﺨﻭﺍﺭﺯﻤﻴﺔ‬ ‫ﺍﻗﺘﺭﺍﺡ‬ ‫ﺘﻡ‬ ‫ﺍﻟﺒﺤﺙ‬ ‫ﻫﺫﺍ‬ ‫ﻓﻲ‬ ‫ﺍﻟﺒﺘﺎﺕ‬ ‫ﻤﺴﺘﻭﻯ‬) ‫ﻭﺍﻟﺘﺠﻤﻴﻊ‬ ‫ﺍﻟﺘﺠﺯﺌﺔ‬ (‫ﺍﻻﺴﺭﺍﺭ‬ ‫ﻤﺸﺎﺭﻜﺔ‬ ‫ﺨﻭﺍﺭﺯﻤﻴﺎﺕ‬ ‫ﺨﺼﺎﺌﺹ‬ ‫ﺠﻤﻴﻊ‬ ‫ﻋﻠﻰ‬ ‫ﺘﺤﺘﻭﻱ‬ (k, n) ‫ﺍﻟﺼﻭﺭ‬ ‫ﺍﻨﻭﺍﻉ‬ ‫ﻟﺠﻤﻴﻊ‬ ‫ﻭﻤﻨﺎﺴﺒﺔ‬ ‫ﺍﻟﺘﻨﻔﻴﺫ‬ ‫ﺴﻬﻠﺔ‬ ‫ﺒﺎﻨﻬﺎ‬ ‫ﻭﺘﻤﺘﺎﺯ‬) ‫ﻭﺍﻟﻤﻠﻭﻨﺔ‬ ‫ﻭﺍﻟﺭﻤﺎﺩﻴﺔ‬ ‫ﺍﻟﺜﻨﺎﺌﻴﺔ‬ (‫ﻭﻴﻤﻜـﻥ‬ ‫ﺘﻨﻔﻴﺫﻫ‬ ‫ﺍﻟﻤﺎﺩﻴﺔ‬ ‫ﺍﻟﻤﻜﻭﻨﺎﺕ‬ ‫ﺍﻭ‬ ‫ﺍﻟﺒﺭﺍﻤﺠﻴﺎﺕ‬ ‫ﺒﻭﺍﺴﻁﺔ‬ ‫ﺎ‬ .