fn from_bytes()

in src/key_exchange/tripledh.rs [677:701]

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

    fn from_bytes(input: &[u8]) -> Result<Self, ProtocolError> {
        let key_len = <KG as KeGroup>::PkLen::USIZE;
        let nonce_len = NonceLen::USIZE;
        let checked_nonce = check_slice_size_atleast(input, nonce_len, "ke2_message nonce")?;

        let unchecked_server_e_pk = check_slice_size_atleast(
            &checked_nonce[nonce_len..],
            key_len,
            "ke2_message server_e_pk",
        )?;
        let checked_mac = check_slice_size(
            &unchecked_server_e_pk[key_len..],
            OutputSize::<D>::USIZE,
            "ke1_message mac",
        )?;

        // Check the public key bytes
        let server_e_pk = PublicKey::deserialize(&unchecked_server_e_pk[..key_len])?;

        Ok(Self {
            server_nonce: GenericArray::clone_from_slice(&checked_nonce[..nonce_len]),
            server_e_pk,
            mac: GenericArray::clone_from_slice(checked_mac),
        })
    }