Analytic Attacks is a #Cryptanalytic Attack utilising the encryption information gathered before carrying out attack to recover some or all subkey bits and if necessary involving Brute Force Attack#. They are generally categorised as statistical attacks.
There are several types of Analytic Attacks:
Linear Cryptanalysis is an #Analytic Attacks approximate the non-linearity with linear equations (finding the linear approximation). This is focus on the S-boxes’ non-linearity.
Differential Cryptanalysis is an #Analytic Attacks against Feistel Cipher Structure# by comparing the input (plaintext) and output (ciphertext) differences. It is focus on the non-linearity of the cipher especially the S-boxes.
DES encrypts 64-bit of data using 56-bit key, which has been criticised of having poor security due to the small key size, making it vulnerable to possible Brute Force Attack. Analytic Attacks are possible to crack DES. Other than that, smart-card implementation of DES is susceptible to Timing Attack.