Research Article
Security Cryptanalysis of NUX for the Internet of Things
Algorithm 1
Algorithm for differential characteristic on NUX.
| Input: S-box , Probability threshold . | |
| Output: A differential trail with the best probability. | |
| Generate the DDT of S-box. | |
| Store all 2, 4 and the corresponding input/output differences in DDT in the table | |
| for Each of 8 S-boxes in the first round do | |
| for all non-zero entities in DDT do | |
| if S-box is in then | |
| , . | |
| Store them in . | |
| else | |
| , . | |
| Store them in . | |
| Calculate , , , , and store them in . | |
| Calculate , , , , and store them in . | |
| The probability is recorded as . | |
| for to do | |
| if then | |
| Travel to get and its corresponding probability | |
| else if then | |
| Travel to get and the corresponding probability | |
| Keep , which greater than threshold | |
| Calculate , , , , and store them in . | |
| for Each of 8 S-boxes in the first round do | |
| for all non-zero entities in DDT do | |
| Find the largest and store it in | |
| Output different characteristics with probability |