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-rw-r--r--doc/man3/SSL_export_keying_material.pod5
1 files changed, 3 insertions, 2 deletions
diff --git a/doc/man3/SSL_export_keying_material.pod b/doc/man3/SSL_export_keying_material.pod
index abebf911fc327..c6b9229cbf163 100644
--- a/doc/man3/SSL_export_keying_material.pod
+++ b/doc/man3/SSL_export_keying_material.pod
@@ -59,7 +59,8 @@ B<label> and should be B<llen> bytes long. Typically this will be a value from
the IANA Exporter Label Registry
(L<https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#exporter-labels>).
Alternatively labels beginning with "EXPERIMENTAL" are permitted by the standard
-to be used without registration.
+to be used without registration. TLSv1.3 imposes a maximum label length of
+249 bytes.
Note that this function is only defined for TLSv1.0 and above, and DTLSv1.0 and
above. Attempting to use it in SSLv3 will result in an error.
@@ -72,7 +73,7 @@ SSL_export_keying_material_early() returns 0 on failure or 1 on success.
=head1 HISTORY
-SSL_export_keying_material_early() was first added in OpenSSL 1.1.1.
+The SSL_export_keying_material_early() function was added in OpenSSL 1.1.1.
=head1 COPYRIGHT