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PSgChkTl-1.01.zip (70K) a zipped hfs disk image and checksum file. The disk image can be mounted with Mini vMac. Includes source code.

PSgChkTl is a command line version of PSgCheck. It can be used in Macintosh Programmer’s Workshop to automate checking digital signatures in MacPGP format. It is written to be platform independent, using the C standard library, and would probably be easy to port to other platforms (but that is not supported).

It takes two arguments: First, a path to a file containing a signed message. And second, a path to a file containing a public key, in ascii armored format.

If the signature is correctly signed, PSgChkTl will return a zero result ("{status}" in MPW). Otherwise the result will be non-zero.

PSgChkTl is in part descended from MacPGP source code, which, as far as I can tell, allows derived works for noncommercial use.

Here is the md5 checksum for the download, signed with Gryphel Key 5:

--------- GRY SIGNED TEXT ---------

619f66c2e6aa20bc1a996b35e3c662ab PSgChkTl-1.01.zip

------- BEGIN GRY SIGNATURE -------
-------- END GRY SIGNATURE --------


If you find PSgChkTl useful, please consider helping the Gryphel Project, of which it is a part.

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copyright (c) 2018 Paul C. Pratt - last update 10/20/2018