prompt, and stores it in B<buf>.
The maximum allowed size is given with B<length>, including the
terminating NUL byte.
-If B<verify> is non-zero, the password will be verified as well.
+If B<verify> is nonzero, the password will be verified as well.
UI_UTIL_read_pw() does the same as UI_UTIL_read_pw_string(), the
difference is that you can give it an external buffer B<buff> for the
When not used any more, the returned method should be freed with
UI_destroy_method().
+=head1 NOTES
+
+UI_UTIL_read_pw_string() and UI_UTIL_read_pw() use default
+B<UI_METHOD>.
+See L<UI_get_default_method(3)> and friends for more information.
+
+The result from the B<UI_METHOD> created by
+UI_UTIL_wrap_read_pem_callback() will generate password strings in the
+encoding that the given password callback generates.
+The default password prompting functions (apart from
+UI_UTIL_read_pw_string() and UI_UTIL_read_pw(), there is
+PEM_def_callback(), EVP_read_pw_string() and EVP_read_pw_string_min())
+all use the default B<UI_METHOD>.
+
+=head1 RETURN VALUES
+
+UI_UTIL_read_pw_string() and UI_UTIL_read_pw() return 0 on success or a negative
+value on error.
+
+UI_UTIL_wrap_read_pem_callback() returns a valid B<UI_METHOD> structure or NULL
+if an error occurred.
+
+=head1 SEE ALSO
+
+L<UI_get_default_method(3)>
+
=head1 COPYRIGHT
-Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2001-2018 The OpenSSL Project Authors. 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>.