use crate::encoding::mpint_len;

impl PubKey for KeyPair {
    fn push_to(&self, buffer: &mut CryptoVec) {
        match self {
            &KeyPair::Ed25519(ref key) => {
                let public = &key.key[32..];
                buffer.push_u32_be((ED25519.0.len() + public.len() + 8) as u32);
                buffer.extend_ssh_string(ED25519.0.as_bytes());
                buffer.extend_ssh_string(public);
            }
            #[cfg(feature = "openssl")]
            &KeyPair::RSA { ref key, .. } => {
                use crate::encoding::mpint_len;
                let e = key.e().to_vec();
                let n = key.n().to_vec();
                buffer.push_u32_be((4 + SSH_RSA.0.len() + mpint_len(&n) + mpint_len(&e)) as u32);
                buffer.extend_ssh_string(SSH_RSA.0.as_bytes());
                buffer.extend_ssh_mpint(&e);
                buffer.extend_ssh_mpint(&n);
            }
        }
    }
}