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Compiling RIPEM on the Macintosh using THINK C 5.0x
(Beta 1, Version 1)

By Richard Outerbridge

0) The painful step.  

	In order to use RIPEM with files greater than 15K or so, every
	piece of it must be compiled to use 4-byte ints.  This means you
	will need copies of the ANSI and unix libraries supplied with the
	compiler that you have recompiled with these options in effect.

1) Compiler settings and options.

	Unless otherwise noted, each option should be turned OFF.

	Language Settings
		ANSI Conformance ON
			 _STDC_ ON
			Check pointer types ON
		Language extensions ON
			THINK C ON
		Strict Prototype Enforcement ON (doesn't hurt)
			Require prototypes ON

	Compiler Settings
		Generate 68020 instructions ON [if you can]
		Generate 68881 instructions ON [if you can]
	
		[Classes, Methods, Optimize Monomorphic : Don't Care]
	
		4-byte ints ON
		'\p' is unsigned char ON

	Code Optimization
		If you're using 5.02, go wild - turn them ALL ON!
		If you're using 5.0>3<, DO NOT enable "Code Motion".

	Debugging
		None needed :-)  Turn them all off.

	Prefix
		#include <MacHeaders>
		#define MACTC			<--- Important!

2) Build RSAREF project

	Switch into the RSAREF folder.  If your license from RSA DSI
	allows you to use "substitute" files, replace the two files des.h
	and desc.c in the "source" folder with their namesake replacements
	from the "macmods:macstuff:rsaref" folder, and the file r_encode.c 
	from the "macmods:rsaref" folder. These	are optimimized versions
	of the originals.

	Open a new project.  Add all the ".c" files in the rsaref:source
	directory.  Set the compiler options as above.  Make all.  Done.

	Close the project.  Move the resulting project up into the top level
	"ripem" folder.  [If you want, you can move the "rsaref:source" folder
	up to the same level.  All we need from it hereon are .h files.]

3) Build ripem

	Switch into the ripem folder.  Trash the file "global.h" that's
	in the folder "ripem:main", and the file "msc7.c".  Open a new 
	project. Under the Project menu, choose "Set Project Type".  Select 
	Application.  If you wish, set the Creator string to, e.g., "ripe".
	The partition size should be OK where it is, or you can bump it up 
	to 512.  You can play with setting the SIZE flags: it is 32 bit clean.
	Set the overall project options (under the Edit menu) as above.

	If you want a faster DES, replace the file "ddes.c" with the file
	"ddes68.c" from the folder "macmods:macstuff:main" folder.

	Add all the ".c" files in the folder "ripem:main". In a second
	a different segment, add the "RSAREF" project you just created.
	In yet a third segment, add the THINK C library projects "ANSI"
	and	"unix" - make sure they've been compiled correctly!

	Now, just "Build Application" and you're all done.

4) Gotchas

	Some of the arguments can only be parsed if they're followed by
	whitespace - which is only a problem if they're at the end of
	the command line (-R for instance).  Normally we'd have a <cr>
	there to handle this, but in our case we don't.  If you get a
	spurious error message about invalid options >at the end of the
	command line< try padding them out with a blank.  On the other
	hand, when you run the test script in "testg.bat" make sure that
	there are >no< trailing blanks following the args to "-C", or
	else you will seed the random number machine differently and
	will not generate the same keys that come in test1.pub and .prv.
  
5) Testing

	Try the command line in ripem:test:testg.bat and verify that
	the files you generated (test2.prv and test2.pub) are the same
	as the files test1.prv and test1.pub.  Next try the command line
	that's in the file ripem:test:testd.bat.  Make sure that the 
	program name on the command line is "ripem".

6) Environment variables

	The UNIX and PC versions of RIPEM gather certain default information
	from "environment variables".  In this Mac version there is a
	similar feature, which keys off of "STR " resources in the application.
	To use the feature create an "STR " resource, and add whichever of
	the currently supported strings you wish:

	/* meaning *			/* Resource ID */

	PUBLIC_KEY_FILE_ENV   		21041
	PRIVATE_KEY_FILE_ENV    	21042
	USER_NAME_ENV           	21043
	KEY_TO_PRIVATE_KEY_ENV  	21044
	RANDOM_FILE_ENV				21045
	SERVER_NAME_ENV				21046
	RIPEM_ARGS_ENV 				21047

	(In case you wondered: 21041 == 0x5231 == 'R1')

921013/rwo

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Richard