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- @ECHO OFF
- CLS
- ECHO LEARNING THE DEA COMMAND LINE
- echo
- echo
- ECHO EXAMPLE 1 ENCRYPTION
- echo
- echo
- ECHO WE WILL ENCRYPT THE FILE "THOUGHT.TXT" AND LET THE DEA
- ECHO HANDLE THE OUTPUT FILE NAME FOR US
- ECHO WE WILL GIVE THE FOLLOWING DEA COMMAND LINE:
- echo
- ECHO DEA /E /K1 /OTP2000 THOUGHT.TXT
- echo
- echo
- PAUSE
- CLS
- DEA /E /K1 /OTP2000 THOUGHT.TXT
- echo
- echo
- PAUSE
- CLS
- ECHO EXAMPLE 1 DECRYPTION
- echo
- echo
- ECHO NOW WE WILL DECRYPT THE FILE "THOUGHT.DEA"
- ECHO BY GIVING THE FOLLOWING DEA COMMAND LINE:
- echo
- ECHO DEA /D /K1 /OTP2000 THOUGHT.DEA
- echo
- ECHO NOTE THAT WE MUST SPECIFY THE FULL FILE NAME PLUS ANY EXTENSION
- ECHO IF THERE IS ONE WHEN WE SELECT /Decrypt MODE
- echo
- echo
- PAUSE
- DEA /D /K1 /OTP2000 THOUGHT.DEA
- echo
- echo
- ECHO NOW LET'S SEE IF THE DEA CORRECTLY RECOVERED THE FILE
- PAUSE
- CLS
- TYPE THOUGHT.TXT
- echo
- echo
- PAUSE
- @ECHO OFF
- CLS
- ECHO LEARNING THE DEA COMMAND LINE
- echo
- echo
- ECHO EXAMPLE 2 ENCRYPTION
- echo
- echo
- ECHO WE WILL ENCRYPT THE FILE "THOUGHT.TXT" AND SPECIFY OUR OWN
- ECHO OUTPUT FILE NAME
- ECHO WE WILL GIVE THE FOLLOWING DEA COMMAND LINE:
- echo
- ECHO DEA /E /K1 /OTP2000 THOUGHT.TXT NELLIS.XYZ
- echo
- echo
- PAUSE
- CLS
- DEA /E /K1 /OTP2000 THOUGHT.TXT NELLIS.XYZ
- echo
- echo
- PAUSE
- CLS
- ECHO EXAMPLE 2 DECRYPTION
- echo
- echo
- ECHO NOW WE WILL DECRYPT THE FILE "NELLIS.XYZ"
- ECHO BY GIVING THE FOLLOWING DEA COMMAND LINE:
- echo
- ECHO DEA /D /K1 /OTP2000 NELLIS.XYZ
- echo
- ECHO NOTE THAT WE MUST SPECIFY THE FULL FILE NAME PLUS ANY EXTENSION
- ECHO IF THERE IS ONE WHEN WE SELECT /Decrypt MODE
- echo
- echo
- PAUSE
- DEA /D /K1 /OTP2000 NELLIS.XYZ
- echo
- echo
- ECHO NOW LET'S SEE IF THE DEA CORRECTLY RECOVERED THE FILE
- PAUSE
- CLS
- TYPE THOUGHT.TXT
- echo
- echo
- PAUSE
- @ECHO OFF
- CLS
- ECHO LEARNING THE DEA COMMAND LINE
- echo
- echo
- ECHO EXAMPLE 3 ENCRYPTION
- echo
- echo
- ECHO WE WILL ENCRYPT THE FILE "THOUGHT.TXT" AND SPECIFY OUR OWN
- ECHO OUTPUT FILE NAME WITH NO FILE EXTENSION
- ECHO WE WILL GIVE THE FOLLOWING DEA COMMAND LINE:
- echo
- ECHO DEA /E /K1 /OTP2179 THOUGHT.TXT TESTING
- echo
- echo
- PAUSE
- CLS
- DEA /E /K1 /OTP2179 THOUGHT.TXT TESTING
- echo
- echo
- PAUSE
- CLS
- ECHO EXAMPLE 3 DECRYPTION
- echo
- echo
- ECHO NOW WE WILL DECRYPT THE FILE "TESTING"
- ECHO BY GIVING THE FOLLOWING DEA COMMAND LINE:
- echo
- ECHO DEA /D /K1 /OTP2179 TESTING
- echo
- ECHO NOTE THAT AS THE FILE "TESTING" HAS NO EXTENSION, WE DO NOT NEED
- ECHO TO SPECIFY IT THIS TIME
- echo
- echo
- PAUSE
- DEA /D /K1 /OTP2179 TESTING
- echo
- echo
- ECHO NOW LET'S SEE IF THE DEA CORRECTLY RECOVERED THE FILE
- PAUSE
- CLS
- TYPE THOUGHT.TXT
- echo
- echo
- echo
- ECHO *** ALWAYS BE SURE TO USE THE SAME KEY ID NUMBER AND SAME /OTP[n] VALUE
- ECHO *** FOR BOTH ENCRYPTION AND DECRYPTION
- echo
- echo
- ECHO IF YOU INTEND TO USE THE DOS REDIRECTION PIPE, IT MUST BE THE LAST
- ECHO COMMAND ON THE DEA COMMAND LINE
- echo
- echo
- ECHO NOW, LET'S HAVE A LOOK AT THE CONTENTS OF THE DEA.LOG FILE WHICH HAS
- ECHO RECORDED EVERYTHING WE HAVE JUST DONE. WE WILL USE THE DOS 'TYPE' COMMAND
- ECHO IT WILL SCROLL BY VERY QUICKLY, SO PRESS THE PAUSE KEY
- ECHO TO STOP IT. WHEN READY, PRESS ANY OTHER KEY.
- echo
- echo
- PAUSE
- CLS
- ECHO LISTING CONTENTS OF THE DEA.LOG FILE
- echo
- echo
- echo
- PAUSE
- CLS
- TYPE DEA.LOG
- echo
- echo
-