Securing various data types such as text, image, and video is needed in real-time communications. The transmission of data over an insecure channel is a permanent challenge, especially in mass Internet applications. P...
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ISBN:
(纸本)9781728167190
Securing various data types such as text, image, and video is needed in real-time communications. The transmission of data over an insecure channel is a permanent challenge, especially in mass Internet applications. Preserving confidentiality and integrity of data toward malicious attacks, accidental devastation, change during transfer, or while in storage must he improved. Data Encryption Standard (DES) is considered as a symmetric-key algorithm that is most widely used for various security purposes. In this work, a key-based Enhancement of the DES (KE-DES) technique for securing text is proposed. The KE-DES is implemented by the application of IOU steps: the first is merging the Odd/Even hit transformation of every key hit in the DES algorithm. The second step is replacing the right-side expansion of the original DES by using key-distribution (K-D) function. The K-D allocation consists of 8-bits from Permutation Choice-1 (PC-1) key outcome. The next 32-bits outcomes from the right-side of data, there is also 8-bits outcome from Permutation Choice-2 (PC-2) in each round. The key and data created randomly, in this case, provide adequate security and the KE-DES model is considered more efficient for text encryption.
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