symmetric encryption broken

Nathan Johnson johnsonn at
Fri Mar 9 22:24:02 CET 2001

>Some ciphers are symmetric. If you DES-encrypt something, and then "encrypt"
the ciphertext again, you magically get the plaintext back.

This is the behavior I expected, and so I used   -c  each time.
It did not work with 3DES.  Is 3DES not truly symmetric in this sense?

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