Comparison Analysis: The Basic Difference Between Des And Aes And DES
. The basic difference between DES and AES is that in DES plaintext block is divided into two halves before the main algorithm starts whereas, in AES the entire block is processed to obtain the ciphertext.
Let us discuss some more differences between DES and AES with the help of the comparison chart shown below.
Comparison Chart
BASIS FOR COMPARISON DES (DATA ENCRYPTION STANDARD) AES (ADVANCED ENCRYPTION STANDARD)
Basic In DES the data block is divided into two halves. In AES the entire data block is processed as a single matrix.
Principle DES work on Feistel Cipher structure. AES works on Substitution and Permutation Principle.
Plaintext Plaintext is of 64 bits Plaintext can be of 128,192, or 256 bits
Key size DES in comparison to AES has smaller key size. AES has larger key size as …show more content…
• Mix Columns: Columns are of the matrix are shuffled from right to left.
• Add round keys: Here, the Xor of the current block and the expanded key is performed.
And the last 10th round involves Subbytes, Shift Rows, and Add round keys stages only and provides 16 bytes (128-bit) ciphertext.
Key Differences Between DES and AES
1. The 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.
2. The DES algorithm works on the Feistel Cipher principle, and the AES algorithm works on substitution and permutation principle.
3. The key size of DES is 56 bit which is comparatively smaller than AES which has 128,192, or 256-bit secret key.
4. The rounds in DES include Expansion Permutation, Xor, S-box, P-box, Xor and Swap. On the other hands, rounds in AES include Subbytes, Shiftrows, Mix columns, Add round keys.
5. DES is less secure than AES because of the small key size.
6. AES is comparatively faster than DES.
Conclusion:
DES is the older algorithm and AES is the advanced algorithm which is faster and more secure than
Let us discuss some more differences between DES and AES with the help of the comparison chart shown below.
Comparison Chart
BASIS FOR COMPARISON DES (DATA ENCRYPTION STANDARD) AES (ADVANCED ENCRYPTION STANDARD)
Basic In DES the data block is divided into two halves. In AES the entire data block is processed as a single matrix.
Principle DES work on Feistel Cipher structure. AES works on Substitution and Permutation Principle.
Plaintext Plaintext is of 64 bits Plaintext can be of 128,192, or 256 bits
Key size DES in comparison to AES has smaller key size. AES has larger key size as …show more content…
• Mix Columns: Columns are of the matrix are shuffled from right to left.
• Add round keys: Here, the Xor of the current block and the expanded key is performed.
And the last 10th round involves Subbytes, Shift Rows, and Add round keys stages only and provides 16 bytes (128-bit) ciphertext.
Key Differences Between DES and AES
1. The 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.
2. The DES algorithm works on the Feistel Cipher principle, and the AES algorithm works on substitution and permutation principle.
3. The key size of DES is 56 bit which is comparatively smaller than AES which has 128,192, or 256-bit secret key.
4. The rounds in DES include Expansion Permutation, Xor, S-box, P-box, Xor and Swap. On the other hands, rounds in AES include Subbytes, Shiftrows, Mix columns, Add round keys.
5. DES is less secure than AES because of the small key size.
6. AES is comparatively faster than DES.
Conclusion:
DES is the older algorithm and AES is the advanced algorithm which is faster and more secure than