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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .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" \&\fBUI_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 \&\fBUI_UTIL_read_pw()\fR does the same as \fBUI_UTIL_read_pw_string()\fR, the difference is that you can give it an external buffer \fBbuff\fR for the verification passphrase. .PP \&\fBUI_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 \&\fBUI_destroy_method()\fR. .SH "NOTES" .IX Header "NOTES" \&\fBUI_UTIL_read_pw_string()\fR and \fBUI_UTIL_read_pw()\fR use default \&\fB\s-1UI_METHOD\s0\fR. See \fBUI_get_default_method\fR\\|(3) and friends for more information. .PP The result from the \fB\s-1UI_METHOD\s0\fR created by \&\fBUI_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 \&\fBUI_UTIL_read_pw_string()\fR and \fBUI_UTIL_read_pw()\fR, there is \&\fBPEM_def_callback()\fR, \fBEVP_read_pw_string()\fR and \fBEVP_read_pw_string_min()\fR) all use the default \fB\s-1UI_METHOD\s0\fR. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fBUI_UTIL_read_pw_string()\fR and \fBUI_UTIL_read_pw()\fR return 0 on success or a negative value on error. .PP \&\fBUI_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" \&\fBUI_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>.