Providers in OPENSSL 3.0 to replace Third Party Engine(OPENSSL 1.0.2)

Matt Caswell matt at
Wed Oct 6 13:12:31 UTC 2021

On 06/10/2021 14:08, Paramashivaiah, Sunil wrote:
>       Can we use the same which we were using for ENGINE to 
> replace it as provider

No. The OpenSSL <-> Engine interface is completely different to the 
OpenSSL <-> Provider interface. You need to ask the supplier of your 
ENGINE to update it to a provider (for which you will need a new .so 
file). Until then you are stuck using the deprecated ENGINE interfaces.


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