Well the product in question is pretty legacy so I don't think we will be investing time on that sort of implementation. I understand the customer can use a build of OpenSSL 1.1.1 built for RedHat 6.6 and that should work. Its possible they have used an installation built on a newer RedHat version. I need to find that out first. Tim -----Original Message----- From: openssl-users <openssl-users-bounces@xxxxxxxxxxx> On Behalf Of Viktor Dukhovni Sent: Thursday 8 July 2021 22:04 To: openssl-users@xxxxxxxxxxx Subject: Re: installing OpenSSL 1.1.1 on RedHat 6.x On Thu, Jul 08, 2021 at 09:58:15PM +0100, Tim Culhane wrote: > We used to ship OpenSSL with our product but decided to decouple > OpenSSL so that customers had the flexibility to run with whatever > versionof OpenSSL and could upgrade OpenSSL when they needed to rather > than waiting for an update from us containing a new OpenSSL implementation. That makes sense for customers on non-LTS (a.k.a. obsolete) platforms, but if a customer is sticking with an ~10 year platform that you're forced to support, then for *that* platform it may make sense to bundle a version of OpenSSL that has the requisite modern features. This can be done, and the OpenSSL build contains the necessary hooks to do this (sorry I never wrote a detailed tutorial on how to do that, I hope, if motivated, it should be possible to figure it out). Of course the custom OpenSSL build would have to be built for the platform in question (e.g. built on a sufficiently old RedHat 6.x system). -- VIktor.