fn finish_ke()

in src/key_exchange/tripledh.rs [404:417]

• 12 lines of code
• 1 McCabe index (conditional complexity)

    fn finish_ke(
        ke3_message: Self::KE3Message,
        ke2_state: &Self::KE2State,
    ) -> Result<Output<D>, ProtocolError> {
        let mut client_mac =
            Hmac::<D>::new_from_slice(&ke2_state.km3).map_err(|_| InternalError::HmacError)?;
        client_mac.update(&ke2_state.hashed_transcript);

        client_mac
            .verify(&ke3_message.mac)
            .map_err(|_| ProtocolError::InvalidLoginError)?;

        Ok(ke2_state.session_key.clone())
    }