OpenCBD: A Network-Encrypted Unknown Traffic Identification Scheme Based on Open-Set Recognition

Algorithm 1

Preprocessing algorithm for traffic data.

Input: the original network traffic dataset , the number of classes of traffic .

Output: packet vector set ;

1: Fordo

2:  Randomly select consecutive 10 packets to form flows;

3:  Fordo

4:  Read the payload part of the packet ;

5:  Ifthen

6:   ;

7:  Else

8:   ;

9:  End if

10:  ;

11:  ;

12:  If second then

13:   Continue;

14:  Else

15:   Add between and ;

16:  End if

17: End for

18: Generate packet vector set ;

19: End for

20: Return packet vector set .