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.\" ========================================================================
.\"
.IX Title "UI_UTIL_READ_PW 3"
.TH UI_UTIL_READ_PW 3 "2021-12-14" "1.1.1m" "OpenSSL"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.nh
.SH "NAME"
UI_UTIL_read_pw_string, UI_UTIL_read_pw, UI_UTIL_wrap_read_pem_callback \- user interface utilities
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ui.h>
\&
\& int UI_UTIL_read_pw_string(char *buf, int length, const char *prompt,
\& int verify);
\& int UI_UTIL_read_pw(char *buf, char *buff, int size, const char *prompt,
\& int verify);
\& UI_METHOD *UI_UTIL_wrap_read_pem_callback(pem_password_cb *cb, int rwflag);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fIUI_UTIL_read_pw_string()\fR asks for a passphrase, using \fBprompt\fR as a
prompt, and stores it in \fBbuf\fR.
The maximum allowed size is given with \fBlength\fR, including the
terminating \s-1NUL\s0 byte.
If \fBverify\fR is nonzero, the password will be verified as well.
.PP
\&\fIUI_UTIL_read_pw()\fR does the same as \fIUI_UTIL_read_pw_string()\fR, the
difference is that you can give it an external buffer \fBbuff\fR for the
verification passphrase.
.PP
\&\fIUI_UTIL_wrap_read_pem_callback()\fR can be used to create a temporary
\&\fB\s-1UI_METHOD\s0\fR that wraps a given \s-1PEM\s0 password callback \fBcb\fR.
\&\fBrwflag\fR is used to specify if this method will be used for
passphrase entry without (0) or with (1) verification.
When not used any more, the returned method should be freed with
\&\fIUI_destroy_method()\fR.
.SH "NOTES"
.IX Header "NOTES"
\&\fIUI_UTIL_read_pw_string()\fR and \fIUI_UTIL_read_pw()\fR use default
\&\fB\s-1UI_METHOD\s0\fR.
See \fIUI_get_default_method\fR\|(3) and friends for more information.
.PP
The result from the \fB\s-1UI_METHOD\s0\fR created by
\&\fIUI_UTIL_wrap_read_pem_callback()\fR will generate password strings in the
encoding that the given password callback generates.
The default password prompting functions (apart from
\&\fIUI_UTIL_read_pw_string()\fR and \fIUI_UTIL_read_pw()\fR, there is
\&\fIPEM_def_callback()\fR, \fIEVP_read_pw_string()\fR and \fIEVP_read_pw_string_min()\fR)
all use the default \fB\s-1UI_METHOD\s0\fR.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fIUI_UTIL_read_pw_string()\fR and \fIUI_UTIL_read_pw()\fR return 0 on success or a negative
value on error.
.PP
\&\fIUI_UTIL_wrap_read_pem_callback()\fR returns a valid \fB\s-1UI_METHOD\s0\fR structure or \s-1NULL\s0
if an error occurred.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fIUI_get_default_method\fR\|(3)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2001\-2020 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file \s-1LICENSE\s0 in the source distribution or at
<https://www.openssl.org/source/license.html>.
Copyright 2K16 - 2K18 Indonesian Hacker Rulez
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