Information Security208110 marksDES encryption and decryption
Discuss how encryption and decryption is done in the DES algorithm.
Discuss how encryption and decryption is done in the DES algorithm.[10]
DES (Data Encryption Standard) is a symmetric-key block cipher developed by IBM and adopted as a federal standard by NIST in 1977. It encrypts data in 64-bit blocks using a 56-bit key and performs 16 rounds of substitution and permutation operations. --- Parameter Value ------------------ Block S...