Struct Argon2Keyring 

pub struct Argon2Keyring { /* private fields */ }

Headless fallback (spec §10.2): derive the master key from a passphrase with Argon2id. Deterministic given the same passphrase and salt, so the same vault unlocks across runs without an OS keyring. There is nothing to store — set_master_key is unsupported.

Implementations

impl Argon2Keyring

pub fn new( passphrase: impl Into<Vec<u8>>, salt: impl Into<Vec<u8>>, ) -> Result<Self, CoreError>

Build a fallback keyring from a passphrase and a salt. The salt is not secret but must be stable for a given vault (store it alongside the vault) and at least MIN_SALT_LEN bytes.

Trait Implementations

impl Keyring for Argon2Keyring

fn get_master_key(&self) -> Result<MasterKey, CoreError>

Fetch the master key, materializing it (e.g. reading the OS keyring or deriving from a passphrase).

fn set_master_key(&self, _key: &MasterKey) -> Result<(), CoreError>

Persist the master key (e.g. write it to the OS keyring). Backends that derive the key (see Argon2Keyring) have nothing to store and return an error.