[#EVP_read_pw_string]
= EVP_read_pw_string
:mrdocs:

Prompt on the terminal for a password into `buf.`

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
EVP_read_pw_string(
    char* buf,
    int length,
    char const* prompt,
    int verify);
----

== Return Value

0 on success, a negative value on mismatch/cancel, or a positive UI error code.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *buf*
| Destination buffer receiving the password (NUL‐terminated).
| *length*
| Capacity of `buf` in bytes including the NUL terminator.
| *prompt*
| Prompt string shown to the user, or NULL for the default.
| *verify*
| Nonzero to ask twice and require matching input.
|===


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