DES - Data Encryption Standard

DES (Data Encryption Standard) is a symmetric encryption algorithm whose encryption key is 64 bits (8 control, 56 effective). It uses a block diagram that performs complex encryption operations.
Other advanced encryption algorithms have been developed based on DES.
Feistel's function was also used here. The cipher can easily be broken by brute force, so tripleDES (triple application of DES) can be used to increase security, which has the disadvantage of a speed reduction.