How can I tell if a name for a cipher/digest is implemented?

[Hal Murray <hmurray@xxxxxxxxxxxxxxx>]

I think that checking for NULL from EVP_get_ciphername() works in 1.1.1
but that changed for 3.0.0

Is there anything better/cleaner than actually calling EVP_CipherInit() or 
such?


I'm curious.  What does it mean to have a non-NULL cipher that doesn't work?  
I'm using default Engines and Providers.  Is that something like we have 
allocated a slot in the name space but this engine doesn't support it?  Should 
there be something like EVP_get_ciphername that takes the engine parameter?

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