Trait KeySource 

pub trait KeySource:
    Debug
    + Send
    + Sync {
    // Required methods
    fn with_key(&self, f: &mut dyn FnMut(&[u8; 32]) -> Result<()>) -> Result<()>;
    fn backend_name(&self) -> &'static str;
    fn provisioning_state(&self) -> ProvisioningState;

    // Provided method
    fn initialize(&self) -> Result<()> { ... }
}

Abstracts where the master encryption key is obtained.

Object-safe, single-trait design. Only with_key, backend_name, and provisioning_state are required; initialize has a default error for backends that cannot create keys locally.

Required Methods

fn with_key(&self, f: &mut dyn FnMut(&[u8; 32]) -> Result<()>) -> Result<()>

Run f with a reference to the 256-bit master key. The reference is only valid during the call.

fn backend_name(&self) -> &'static str

Human-readable label for diagnostic messages.

fn provisioning_state(&self) -> ProvisioningState

Local-only provisioning check — MUST NOT run scripts or prompt for user input.

Provided Methods

fn initialize(&self) -> Result<()>

Generate fresh key material. Default error for backends that cannot create keys locally.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl KeySource for FileKeySource