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-rw-r--r--doc/man3/EVP_sm3.pod12
1 files changed, 9 insertions, 3 deletions
diff --git a/doc/man3/EVP_sm3.pod b/doc/man3/EVP_sm3.pod
index 50ec429c7756..65be55e88dba 100644
--- a/doc/man3/EVP_sm3.pod
+++ b/doc/man3/EVP_sm3.pod
@@ -24,11 +24,17 @@ The SM3 hash function.
=back
+=head1 NOTES
+
+Developers should be aware of the negative performance implications of
+calling this function multiple times and should consider using
+L<EVP_MD_fetch(3)> with L<EVP_MD-SM3(7)> instead.
+See L<crypto(7)/Performance> for further information.
=head1 RETURN VALUES
These functions return a B<EVP_MD> structure that contains the
-implementation of the symmetric cipher. See L<EVP_MD_meth_new(3)> for
+implementation of the message digest. See L<EVP_MD_meth_new(3)> for
details of the B<EVP_MD> structure.
=head1 CONFORMING TO
@@ -42,10 +48,10 @@ L<EVP_DigestInit(3)>
=head1 COPYRIGHT
-Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
Copyright 2017 Ribose Inc. All Rights Reserved.
-Licensed under the OpenSSL license (the "License"). You may not use
+Licensed under the Apache License 2.0 (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
L<https://www.openssl.org/source/license.html>.