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The number of rounds and S-Boxes in any symmetric cryptosystem plays a great role on its security as well as on the probability of correct reception at the receiver after decryption. This paper considers a class of symmetric encryption algorithms based on the Data Encryption Standard (DES) and sheds lights into understanding the effect of each the number of rounds and number of S-Boxes on the security of the encrypted data as well as on the probability of correct reception in the wireless channel. In wireless channels, some encrypted bits could be flipped while transmitted over the channel due to noise, interference or fading.
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