AES and DES are both symmetrickey cryptographic algorithms, in which the sender and receiver both use a single shared key for both encryption and decryption.
AES  DES 
AES stands for Advanced Encryption Standard  DES stands for Data Encryption Standard 
First published in 1998  First published in 1976 
The key length can be 128bits, 192bits, and 256bits  The effective key length is 56bits 
In AES, the number of rounds depends on key length: 10(128bits), 12(192bits), and 14(256bits)  Uses 16 rounds of Feistel structure 
The structure is based on the substitutionpermutation network  The structure is based on Feistel Cipher 
The rounds in AES include Byte Substitution(SubBytes), Shift Rows, Mix Columns, Add RoundKey  The rounds in DES include Expansion, XOR operation with round key, Substitution, and Permutation 
AES can encrypt 128bits of plaintext  DES can encrypt 64bits of plaintext 
AES was designed by Vincent Rijmen, Joan Daemen  DES was designed by IBM 
AES is more secure than DES  DES is known to have vulnerabilities. 3DES is the secure variation of DES 
AES was derived from the square cipher  DES was derived from the Lucifer cipher 
No known cryptanalytical attacks against AES  Known attacks against DES include Bruteforce, Davies attack, Differential cryptanalysis(DC), and Linear cryptanalysis(LC) 
Advantages of using AES algorithm

Can be implemented in both hardware and software.

Uses variable key length such as 28bits, 192bits, and 256bits for encryption.

Most widely used security protocol all over the world.

Very much difficult to hack.
Advantages of using DES algorithm

The effective key length is 56bits, thus there are 256 possibilities of the key.

Requires the same key for both encryption and decryption.
Which is more secure AES or DES algorithm?
AES is more secure than DES as it allows you to choose between 128bit, 192bit, 256bit key making it exponentially stronger than DES which uses a 56bit key.
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