You can read details about current OpenSSL versioning at https://wiki.openssl.org/index.php/Versioning
Going forward with the upcoming 3.0.0 release, the versioning scheme will change to a more contemporary format. You can read about it at https://www.openssl.org/policies/releasestrat.html Best regards, Nicola Tuveri On Tue, Mar 3, 2020, 06:39 Kaushal Shriyan <kaushalshri...@gmail.com> wrote: > Hi, > > I am curious to know regarding *k* in 1.0.2k-fips, *d* in 1.1.1d, *l* in > 1.1.0l and *u* in 1.0.2u. What does this alphabet mean? > > Best Regards, > > Kaushal >