peerman 0.2.1

DN42 peer manager with WireGuard, BIRD, and cluster support
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use argon2::{
    Argon2,
    password_hash::{PasswordHash, PasswordHasher, PasswordVerifier, SaltString, rand_core::OsRng},
};

/// Hash a password using argon2id.
pub fn hash_password(password: &str) -> Result<String, argon2::password_hash::Error> {
    let salt = SaltString::generate(&mut OsRng);
    let argon2 = Argon2::default();
    let hash = argon2
        .hash_password(password.as_bytes(), &salt)?
        .to_string();
    Ok(hash)
}

/// Verify a password against an argon2id hash.
pub fn verify_password(password: &str, hash: &str) -> Result<bool, argon2::password_hash::Error> {
    let parsed_hash = PasswordHash::new(hash)?;
    Ok(Argon2::default()
        .verify_password(password.as_bytes(), &parsed_hash)
        .is_ok())
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_hash_and_verify() {
        let hash = hash_password("test-password").unwrap();
        assert!(verify_password("test-password", &hash).unwrap());
        assert!(!verify_password("wrong-password", &hash).unwrap());
    }

    #[test]
    fn test_different_hashes_for_same_password() {
        let hash1 = hash_password("same-password").unwrap();
        let hash2 = hash_password("same-password").unwrap();
        assert_ne!(hash1, hash2, "Salt should produce different hashes");
    }
}