Update docs for TLS1.3 FFDHE

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8178)

1 files changed, 14 insertions, 6 deletions

diff --git a/doc/man3/SSL_CONF_cmd.pod b/doc/man3/SSL_CONF_cmd.pod
index 5c58268f49..227d9de377 100644
--- a/doc/man3/SSL_CONF_cmd.pod
+++ b/doc/man3/SSL_CONF_cmd.pod
@@ -79,9 +79,13 @@ B<ClientHello>.
 
 The B<value> argument is a colon separated list of groups. The group can be
 either the B<NIST> name (e.g. B<P-256>), some other commonly used name where
-applicable (e.g. B<X25519>) or an OpenSSL OID name (e.g B<prime256v1>). Group
-names are case sensitive. The list should be in order of preference with the
-most preferred group first.
+applicable (e.g. B<X25519>, B<ffdhe2048>) or an OpenSSL OID name
+(e.g B<prime256v1>). Group names are case sensitive. The list should be in
+order of preference with the most preferred group first.
+
+Currently supported groups for B<TLSv1.3> are B<P-256>, B<P-384>, B<P-521>,
+B<X25519>, B<X448>, B<ffdhe2048>, B<ffdhe3072>, B<ffdhe4096>, B<ffdhe6144>,
+B<ffdhe8192>.
 
 =item B<-curves>
 
@@ -356,9 +360,13 @@ B<ClientHello>.
 
 The B<value> argument is a colon separated list of groups. The group can be
 either the B<NIST> name (e.g. B<P-256>), some other commonly used name where
-applicable (e.g. B<X25519>) or an OpenSSL OID name (e.g B<prime256v1>). Group
-names are case sensitive. The list should be in order of preference with the
-most preferred group first.
+applicable (e.g. B<X25519>, B<ffdhe2048>) or an OpenSSL OID name
+(e.g B<prime256v1>). Group names are case sensitive. The list should be in
+order of preference with the most preferred group first.
+
+Currently supported groups for B<TLSv1.3> are B<P-256>, B<P-384>, B<P-521>,
+B<X25519>, B<X448>, B<ffdhe2048>, B<ffdhe3072>, B<ffdhe4096>, B<ffdhe6144>,
+B<ffdhe8192>.
 
 =item B<Curves>