Plan 9 from Bell Labs’s /usr/web/sources/contrib/fgb/root/sys/src/ape/lib/openssl/crypto/dsa/README
The stuff in here is based on patches supplied to me by Steven Schoch <schoch@sheba.arc.nasa.gov> to do DSS. I have since modified a them a little but a debt of gratitude is due for doing the initial work.
