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Trailing-Edge - PDP-10 Archives - decuslib10-04 - 43,50331/dfcode.abs
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     DFCODE IS A PDP-10 PROGRAM TO CODE  OR  DECODE  DECTAPE
FILES,  IN  SUCH  A  WAY  AS  TO MAKE THEM UNRECOGNIZABLE TO
ANYONE BUT THE OWNER.  SINCE NORMAL MONITOR  PROTECTION  CAN
BE   BYPASSED,   AND  IS  INSTALATION  DEPENDENT,  A  BETTER
PROTECTION SCHEME IS FREQUENTLY ADVANTAGEOUS.

     THE PROGRAM WRITES  CODED  COPIES  OF  FILES  FROM  ANY
DEVICE, TO A "STORAGE" DECTAPE, AND WRITES DECODED COPIES OF
CODED FILES FROM A DECTAPE TO ANY  OTHER  DEVICE.   ALTHOUGH
THE  PERIPHERAL DEVICE ON WHICH THE UNCODED FILE RESIDES, OR
IS TO RESIDE, MAY BE ANY DEVICE, IT IS USUALLY DISK.