this command line tool for your computer
SigWrtTl is a command line version of SigWrite. It can be used to automate creating digital signatures of the kind that is used throughout this website. It is written to be platform independent, using the C standard library.
It takes three arguments: First, a path to a file contained a message to be signed. Second, a path to a file containing a secret key, in ascii armored format. And third, a path to a new output file in which to put the signed message.
SigWrtTl is in part descended from MacPGP source code, which, as far as I can tell, allows derived works for noncommercial use.
Download source code (for programmers who want to see how it works or modify it)
sigwrttl-1.02.src.tgz (info) unix style
sigwrttl-1.02.src_d.zip (info) Classic Macintosh style: a zipped hfs disk image and checksum file. The disk image can be mounted with Mini vMac.
If you find SigWrtTl useful, please consider helping the Gryphel Project, of which it is a part.