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derive_wrap_key

huddle_protocol::crypto::code_join

Function derive_wrap_key 

Source 
pub fn derive_wrap_key(
    our_secret: &StaticSecret,
    their_pub: &PublicKey,
) -> [u8; 32]
Expand description

Derive the 32-byte wrap key both sides compute: HKDF-SHA256 over the raw X25519 ECDH shared secret of our_secret and their_pub. The owner uses it to passphrase::wrap the session key; the joiner uses it to unwrap.