Struct RoomCrypto 

pub struct RoomCrypto { /* private fields */ }

Per-room Megolm crypto: one outbound session (ours) + many inbound (others’).

Implementations

impl RoomCrypto

pub fn new_for_room( db: Db, room_id: String, our_fingerprint: String, persist_key: [u8; 32], ) -> Result<Self>

Create a fresh outbound session and persist it. persist_key is the 32-byte key the at-rest session pickles are encrypted under.

pub fn load( db: Db, room_id: String, our_fingerprint: String, persist_key: [u8; 32], ) -> Result<Option<Self>>

Load any persisted sessions for the room. Returns None when no usable outbound session is stored (we haven’t joined or created it, or the only outbound pickle is unreadable).

Resilient by design: a single session that fails to decode or decrypt is logged and skipped rather than aborting the whole room load. One corrupt row should not lock the user out.

pub fn encrypt(&mut self, plaintext: &[u8]) -> Result<(String, Vec<u8>)>

Encrypt a plaintext using our outbound session. Returns (session_id, MegolmMessage bytes).

pub fn decrypt( &mut self, sender_fingerprint: &str, session_id: &str, ciphertext: &[u8], ) -> Result<Vec<u8>>

Decrypt a message from a specific sender.

pub fn add_inbound_session( &mut self, sender_fingerprint: &str, session_key_b64: &str, ) -> Result<()>

Add an inbound session from another member. session_key_b64 is the base64-encoded Megolm SessionKey they shared with us.

pub fn our_session_key_b64(&self) -> String

Get our outbound session key for sharing with new members (base64).

pub fn our_session_id(&self) -> String

pub fn our_fingerprint(&self) -> &str

pub fn room_id(&self) -> &str