From woody@chinacat.Unicom.COM Tue Jul 10 08:27:38 1990
From: woody@chinacat.Unicom.COM (Woody Baker @ Eagle Signal)
Newsgroups: comp.lang.postscript
Subject: Re: eexec?
Summary: here are the decrypt/encrypt routines
Date: 10 Jul 90 02:59:37 GMT
Distribution: usa
Organization: a guest of Unicom Systems Development, Austin


Here are the encrypt and decrypt routines.  The versions that handle
files, are an adaptation of the other two, as they really did not work
correctly under MS-DOS.  MS-DOS 'C' attempts to be "unix compatable"
and as such, when it sees a 0x0D, it converts it to a linefeed.
This has a way of completely messing up the conversion of a binary
file that happens to have a 0x0d in it.  The file versions avoid
it by using the "b" specifier in the file opening code.  This allows
uncooked binary code.  There is one other non-portablilty.  the declaration
of unsigned short int 0xhhhh; will fail on an 8 bit machine.  Short will
be a byte, and since we are working with 16 bits here.....