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EDIT :: UI_UTIL_wrap_read_pem_callback.3

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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>.

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