secrecy 0.8.0

Wrapper types and traits for secret management which help ensure they aren't accidentally copied, logged, or otherwise exposed (as much as possible), and also ensure secrets are securely wiped from memory when dropped.
Documentation 
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//! Secret strings

use super::{CloneableSecret, DebugSecret, Secret};
use alloc::str::FromStr;
use alloc::string::{String, ToString};

/// Secret strings
#[cfg_attr(docsrs, doc(cfg(feature = "alloc")))]
pub type SecretString = Secret<String>;

impl DebugSecret for String {}
impl CloneableSecret for String {}

impl FromStr for SecretString {
    type Err = core::convert::Infallible;

    fn from_str(src: &str) -> Result<Self, Self::Err> {
        Ok(SecretString::new(src.to_string()))
    }
}