v2.0 PBE.
See L<PEM_write_PrivateKey(3)> and L<d2i_PKCS8PrivateKey_bio(3)>.
+PEM_do_header() makes no assumption regarding the pass phrase received from the
+password callback.
+It will simply be treated as a byte sequence.
+
=head1 SEE ALSO
L<ERR_peek_last_error(3)>, L<ERR_GET_LIB(3)>,
-L<d2i_PKCS8PrivateKey_bio(3)>.
+L<d2i_PKCS8PrivateKey_bio(3)>,
+L<passphrase-encoding(7)>
=head1 COPYRIGHT
-Copyright 1998-2016 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 1998-2018 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy