If you have an older pre-C99 system, I've backported a TLS 1.2 library to gcc versions as early as 2.5 as long as it has 64-bit ints (long long, usually) and stdarg.h.
https://github.com/classilla/cryanc As a test, with a suitably agreeable (or confusable) browser, here are various period browsers visiting modern HTTPS sites through carl, the included demonstration application which can also act as a TLS proxy. The proxy is running on the same machine, no tricks! OmniWeb, at least two flavours of NCSA Mosaic and MacLynx are all demonstrated. https://oldvcr.blogspot.com/2020/11/fun-with-crypto-ancienne-tls-for.html -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com -- Good software lets me sleep. -- Michael W. Lucas ---------------------------