Realize a simple procedure for Kerberos authentication

Echo-Client
...........\.classpath
...........\.project
...........\c_private.rsa
...........\log
...........\...\Logfile.1
...........\...\Snapshot.1
...........\...\Version_Number
...........\run.bat
...........\src
...........\...\AS_C.class
...........\...\AS_C.java
...........\...\Authenticator_s.class
...........\...\Authenticator_s.java
...........\...\Authenticator_tgs.class
...........\...\Authenticator_tgs.java
...........\...\Client$1.class
...........\...\Client$2.class
...........\...\Client.class
...........\...\Client.java
...........\...\C_AS.class
...........\...\C_AS.java
...........\...\C_S.class
...........\...\C_S.java
...........\...\C_TGS.class
...........\...\C_TGS.java
...........\...\Encryption.class
...........\...\Encryption.java
...........\...\S_C.class
...........\...\S_C.java
...........\...\TGS_C.class
...........\...\TGS_C.java
...........\...\Ticket_s.class
...........\...\Ticket_s.java
...........\...\Ticket_tgs.class
...........\...\Ticket_tgs.java
Echo-Server
...........\.classpath
...........\.project
...........\keys
...........\....\client_public.rsa
...........\....\server.aes
...........\....\tgs.aes
...........\log
...........\...\Logfile.1
...........\...\Snapshot.1
...........\...\Version_Number
...........\src
...........\...\AESCryptography.class
...........\...\AESCryptography.java
...........\...\AESKey.class
...........\...\AESKey.java
...........\...\ASSocket.class
...........\...\ASSocket.java
...........\...\AS_C.class
...........\...\AS_C.java
...........\...\Authenticator_s.class
...........\...\Authenticator_s.java
...........\...\Authenticator_tgs.class
...........\...\Authenticator_tgs.java
...........\...\C_AS.class
...........\...\C_AS.java
...........\...\C_S.class
...........\...\C_S.java
...........\...\C_TGS.class
...........\...\C_TGS.java
...........\...\RSACryptography.class
...........\...\RSACryptography.java
...........\...\SSocket.class
...........\...\SSocket.java
...........\...\S_C.class
...........\...\S_C.java
...........\...\TGSSocket.class
...........\...\TGSSocket.java
...........\...\TGS_C.class
...........\...\TGS_C.java
...........\...\Ticket_s.class
...........\...\Ticket_s.java
...........\...\Ticket_tgs.class
...........\...\Ticket_tgs.java
...........\...\Utils.class
...........\...\Utils.java
...........\startAS.bat
...........\startSS.bat
...........\startTGS.bat

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