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-rw-r--r--doc/man7/EVP_KDF-HKDF.pod4
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/man7/EVP_KDF-HKDF.pod b/doc/man7/EVP_KDF-HKDF.pod
index 5ef09aed36..5fc0a73241 100644
--- a/doc/man7/EVP_KDF-HKDF.pod
+++ b/doc/man7/EVP_KDF-HKDF.pod
@@ -140,6 +140,10 @@ L<EVP_KDF_derive(3)>,
L<EVP_KDF(3)/PARAMETERS>,
L<EVP_KDF-TLS13_KDF(7)>
+=head1 HISTORY
+
+This functionality was added in OpenSSL 3.0.
+
=head1 COPYRIGHT
Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.