Journal
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
Volume 47, Issue 8, Pages 9441-9457Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s13369-021-06282-3
Keywords
Text encryption; Encryption techniques; Block diffusion; Indirect symbol substitution; Key expansion
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The paper introduces an innovative block-based encryption technique that enhances information security by implementing random operations and substitution techniques on block symbols. Experimental results show that the technique passed randomness tests and has a high avalanche effect, effectively boosting the security of the resulting ciphertext.
To properly respond to ever-growing threats to information security, there is a pressing need for more effective encryption techniques. This paper offers an innovative block-based encryption technique that combines effective random manipulations of a block's symbols with tricky substitution techniques. Furthermore, the proposed technique offers a block diffusion method in which minor variations to the block's symbols will magnify and then propagate to the entire block, largely affecting every individual symbol in the block. Experiments with the prototype implementation showed that the output of the proposed encryption technique passed effective randomness tests (NIST and ENT batteries) with a success rate greater than 94%. The simulations of the block diffusion technique showed that it has a high avalanche effect, which greatly boosts the security of the resulting ciphertext.
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