🚀 go-pugleaf

On  Wed Nov 28 13:45:24 PST 1990, in an article entitled:
>Subject: Looking for encryption program for MAC
I wrote:

>I'm looking for a program to run on a MAC that will encrypt and/or
>decrypt files.  The intent is to encrypt files before transmission through 
>not-very-secure e-mail facilities, then decrypt upon receipt.  
>
>The encrypted files must be able to be decrypted on IBM PCs as well as
>on MACs.  That means that the encryption algorithm used by the MAC program
>must be well known and documented.  I am prepared to write the necesary 
>program for the IBM PC, but I have no facilities for programming on a MAC.
>
>Ideally, it would use DES CBC encryption (CBC means Cipher Block Chaining).  
>A program that does what the **IX (Sun) DES program does would be fine.
>
>If you have, or know of, a program that meets my needs, please send me 
>e-mail about it.  I don't read this newsgroup regularly.  However,
>in fairness to you who DO read this group regularly, I promise to be a good
>net.citizen and post a summary of any positive relpies to this news group.

The replies I got were these:

>From: "Bob Fowles 814-865-4774" <RBF@PSUVM.PSU.EDU>

SUM II by Symantec will encrypt/decrypt Mac files and folders.
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>From: Chris Ranch <csr@ubvax>

Empower from Magna might do what you want.  (408)433-5467
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>From: scott@huntsai.boeing.com (Scott Hinckley)

Stuffit offers encryption (I believe DES though can't quite remember)
BONUS: It is shareware, and you can get it via FTP form any of the Mac
archives, believe they only want $15-20 sent in for it.
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I also learned about "Stuffit Deluxe", a commerical version of the
shareware "Stuffit" program, and a program called "Sentinel".  

Unfortunately, NONE of these programs met my criteria, of using an
algorithm that is "well known and documented" so that it could be duplicated
on a UNIX or PC system.  Stuffit Deluxe came the closest.  They partially
document their "NewDE" algorithm which is a variant of DES.  But crucial
parts of the algorithm were not specified (e.g. the "KSX" algorithm for
producing the key schedule).

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Nelson Bolyard      nelson@sgi.COM      {decwrl,sun}!sgi!whizzer!nelson
Disclaimer: Views expressed herein do not represent the views of my employer.
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