doc/man3/SSL_CTX_set1_curves.pod

9 - EC supported curve functions
36 For all of the functions below that set the supported groups there must be at
43 SSL_CTX_set1_groups() sets the supported groups for B<ctx> to B<glistlen>
46 supported groups extension. For a TLS server the groups are used to
47 determine the set of shared groups. Currently supported groups for
52 SSL_CTX_set1_groups_list() sets the supported groups for B<ctx> to
54 names, for example "P-521:P-384:P-256:X25519:ffdhe2048". Currently supported
60 supported groups for the SSL structure B<ssl>.
62 SSL_get1_groups() returns the set of supported groups sent by a client
63 in the supported groups extension. It returns the total number of
64 supported groups. The B<groups> parameter can be B<NULL> to simply
67 order. It can return zero if the client did not send a supported groups
68 extension. If a supported group NID is unknown then the value is set to the
94 only the concept of supported curves. In TLS1.3 this was renamed to supported