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Answer: Solution 1:  tThe basic difference between DES and AES is that the block in DES is divided into two halves before further processing whereas, in AES entire block is processed to obtain ciphertext. tThe DES algorithm works on the Feistel Cipher principle, and the AES algorithm works on substitution and permutation principle. tThe key size of DES is 56 bit which is comparatively smaller than AES which has 128,192, or 256-bit secret key. tThe rounds in DES include Expansion Permutation, Xor, S-box, P-box, Xor and Swap. On th ... See the full answer