list supported groups and curves

[Jordan Brown]

On 2/17/2024 11:01 AM, Wall, Stephen wrote:
>
> Is there a way to list the supported curves and groups with openssl? 
> I saw nothing in the `openssl list` command.  I’m interested mainly
> listing all the valid values for SSL_CTX_set1_group_list().  I see the
> man page for that function has a list of valid groups/curves for TLS
> 1.3, but also mentions providers can change that list, and does not
> give a list for valid curves in other TLS versions.
>
>

You don't say whether you want a C way to do it or a shell way to do
it.  Somebody else gave the shell way:  openssl ecparam -list_curves

The C way is using EC_get_builtin_curves()
<https://www.openssl.org/docs/man3.0/man3/EC_get_builtin_curves.html>.

-- 
Jordan Brown, Oracle ZFS Storage Appliance, Oracle Solaris
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