Tool 127: Cypher/decypher a file using a xor
  
  Description:
   
  This tool permits to cypher and decypher a file. This algorithm is not
  very strong, and can be defeated using a known text attack.
  It uses the --password parameter to generate a pseudo-random string.
  Then, a XOR is done between the string and the file's content.
  Due to XOR properties, this tool can also decrypt.
   
  Usage:
    netwox 127 -p password -i file -o file
  Parameters:
 
  | parameter | description | example | 
 | -p|--password password | password |  | 
| -i|--src-file file | source filename | srcfile.txt | 
| -o|--dst-file file | destination filename | dstfile.txt | 
  Examples:
    netwox 127 -p "" -i "srcfile.txt" -o "dstfile.txt"
    netwox 127 --password "" --src-file "srcfile.txt" --dst-file "dstfile.txt"