readpassphrase_3

Function readpassphrase

Source 
pub fn readpassphrase<'a>(
    prompt: &CStr,
    buf: &'a mut [u8],
    flags: RppFlags,
) -> Result<&'a str, Error>
Expand description

Reads a passphrase using readpassphrase(3).

§Security

The passed buffer might contain sensitive data, even if this function returns an error (for example, if the contents are not valid UTF-8.) It is often considered good practice to zero this memory after you’re done with it, for example by using zeroize:

use zeroize::Zeroizing;
let mut buf = Zeroizing::new(vec![0u8; PASSWORD_LEN]);
let pass = readpassphrase(c"Pass: ", &mut buf, RppFlags::default())?;
Examples found in repository?
examples/inplace.rs (lines 18-22)
13fn main() {
14    #[allow(unused_mut)]
15    let mut buf = vec![0u8; 256];
16    #[cfg(feature = "zeroize")]
17    let mut buf = Zeroizing::new(buf);
18    let password = readpassphrase(
19        c"Password: ",
20        &mut buf,
21        RppFlags::FORCEUPPER | RppFlags::ECHO_ON,
22    )
23    .expect("failed reading passphrase");
24    println!("{password}");
25}