getpass

readpassphrase_3

Function getpass 

Source 
pub fn getpass(prompt: &CStr) -> Result<String, Error>
Expand description

Reads a passphrase using readpassphrase(3), returning a String.

Internally, this function uses a buffer of PASSWORD_LEN bytes, allowing for passwords up to PASSWORD_LEN - 1 characters (accounting for the C NUL terminator.) Any additional characters and the terminating newline are discarded.

§Errors

Returns Err if readpassphrase(3) itself failed or if the entered password is not UTF-8. The former will be represented by Error::Io and the latter by Error::Utf8.

§Security

The returned String is owned by the caller, and therefore it is the caller’s responsibility to clear it when you are done with it:

let mut pass = getpass(c"Pass: ")?;
_ = pass;
pass.zeroize();
Examples found in repository?
examples/pass.rs (line 4)
3fn main() {
4    let mut password = getpass(c"Password: ").expect("failed reading password");
5    println!("{password:?}");
6    password.zeroize();
7}