sdes1\sdes\ep.txt
.....\....\ip.txt
.....\....\ipi.txt
.....\....\keyword.txt
.....\....\p10.txt
.....\....\p4.txt
.....\....\p8.txt
.....\....\plain.txt
.....\....\s0.txt
.....\....\s1.txt
.....\....\S_des.class
.....\....\S_des.java
.....\sdes
sdes1