1.$ DECRYPT BOSTON MYKEY

      Decrypts the file name BOSTON using the DES key, MYKEY, and the
      DESCBC algorithm.

    2.$ DECRYPT CHIGAGO.ENC KEY2 /KEY=AESECB256 /OUT=CHICAGO.DEC

      Decrypts the file named CHICAGO.ENC using the AES key, KEY2,
      and the AESECB256 algorithm, renaming the decrypted output file
      to CHICAGO.DEC, the original plaintext file.