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Ian & Stuart's Australian Mac 1993 September
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Security - care
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Encrypt
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MacPGP 2.2
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MacPGP2.2_Readme
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1993-03-13
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What's new: MacPGP2.2 incorporates the following significant new
features
1) Option to sign a plain text message with a plain text
signature. Choose "Sign Only" under the File menu, and
then check the box "Append clear signature" in the resulting
dialog.
2) Key fingerprints (eg. to verify public keys over the phone)
in the key management dialog. Unlike key IDs, it is impractical
to forge key fingerprints.
3) Multiple recipients for a given message are supported.
4) Improved key handling: large key files can be added to a key
ring much faster and in "autopilot" mode.
5) You may now disable other public keys in your keyring, besides
revoking your own.
6) Icons are now associated to MacPGP and to the various kinds of
files it creates. Double clicking on a MacPGP document now
launches MacPGP and causes it to process (eg. decrypt) the
document. If you had an older version of MacPGP previously
installed, you may have to rebuild your Desktop files to
enable this.
7) The menus have been reorganized and the PGP message window is
scrollable (but not resizeable).
8) You can now select text in the PGP message window and copy it
to the Clipboard.
9) MacPGP now times keystrokes more accurately and uses other
Macintosh events (eg. mouse related events) to help with random
number generation. As a result fewer keystrokes are required
to generate random encryption keys.
10) You can now use MacPGP to just ASCIIfy a binary file without
encryption or signature, under the File menu.
11) The key selection dialogs have been improved.
12) MacPGP dialogs now take SOME cognizance of the contents of your
"config.txt" file. (Environmental path variables not yet supported.
Neither are non-English languages or character sets. Also do NOT
use TZFix, instead use the Map Control Panel to set your
time zone. "config.txt" must be in the same folder as MacPGP.)
IMPORTANT NOTE: Multiple recipients (feature (3) above) is not supported
by PGP versions < 2.2. Hence if you use this option, users of these PGP
versions will not be able to decrypt your message. An Alert has been added
to warn you about this. To turn off this Alert, check "Multiple Recipients"
under the Options menu or add the line
Multiple_Recipients = on
to your "config.txt".
How MacPGP works: MacPGP consists of a Macintosh interface which presents
menus and dialogs, and the PGP "engine" compiled from the same sources as
the command line version of PGP under Unix or MS-DOS. The Macintosh front
end receives your input telling it what to do. The front end then converts
your input internally into a pgp command line which it passes on to the engine
for processing. The command line is echoed to the PGP message window.
Please read the attached PGP documentation for the command line version
for details about PGP.
LAST MINUTE NOTE: Several of the PGP cognoscenti complained that
MacPGP doesn't allow you to access certain obscure and undocumented
functions of PGP such as
pgp -km .....
pgp -da .....
Rather than try to track down all of these hidden features and add menus
and dialogs to access them, it was decided to add a kludge: a command line
escape for MacPGP (also serving as a VERY PRIMITIVE scripting facility):
There is now a new item under the File menu, "Run a command file".
If you choose this item, a dialog appears asking you to choose a
text file containing pgp command lines. MacPGP then passes all of
these raw command lines one by one to the PGP engine, until it finishes
reading the file. File pathnames are expected to use the Macintosh
convention of using colons to separate directory names. Thus
disk_name:top_folder:next_folder:...:file_name (absolute path)
or
:folder_name:folder_name2:...:file_name (relative path from current folder)
If any of your file/folder/disk names contains a space you must enclose the
whole path in double quotes. Multitudes of caveats apply to this feature.
It is untested, unsupported and may bomb your Mac. Certain features of PGP such
as "filter mode" will most definitely NOT WORK. Use this feature at your own
risk. Be sure to read the PGP manual before attempting this.