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use ed25519_dalek::{self as ed, Verifier};
use super::{Ed25519, EdKeyId, EdSignature};
use crate::*;
pub const PUBLIC_KEY_SIZE: usize = ed::PUBLIC_KEY_LENGTH;
#[derive(Clone, Eq, PartialEq)]
pub struct EdPublicKey(ed::PublicKey);
impl EdPublicKey {
pub fn to_bytes(&self) -> Vec<u8> {
let mut res = Vec::with_capacity(PUBLIC_KEY_SIZE);
res.extend_from_slice(self.0.as_bytes());
res
}
pub fn from_bytes<D: AsRef<[u8]>>(bytes: D) -> Result<Self> {
let pk = ed::PublicKey::from_bytes(bytes.as_ref())?;
Ok(Self(pk))
}
}
impl From<ed::PublicKey> for EdPublicKey {
fn from(pk: ed::PublicKey) -> Self {
Self(pk)
}
}
impl PublicKey<Ed25519> for EdPublicKey {
fn key_id(&self) -> EdKeyId {
EdKeyId::from(self)
}
fn validate_id(&self, key_id: &EdKeyId) -> bool {
&self.key_id() == key_id
}
fn verify<D: AsRef<[u8]>>(&self, data: D, sig: &EdSignature) -> bool {
let res = self.0.verify(data.as_ref(), sig.into());
res.is_ok()
}
}
#[allow(clippy::derive_hash_xor_eq)]
impl Hash for EdPublicKey {
fn hash<H: Hasher>(&self, hasher: &mut H) {
self.to_bytes().hash(hasher);
}
}
impl PartialOrd<Self> for EdPublicKey {
fn partial_cmp(&self, rhs: &Self) -> Option<Ordering> {
Some(self.cmp(rhs))
}
}
impl Ord for EdPublicKey {
fn cmp(&self, rhs: &Self) -> Ordering {
self.to_bytes().cmp(&rhs.to_bytes())
}
}
impl ExtendedPublicKey<Ed25519> for EdPublicKey {
fn derive_normal_child(&self, _idx: i32) -> Result<EdPublicKey> {
bail!("Normal derivation of Ed25519 is invalid based on SLIP-0010.")
}
fn public_key(&self) -> EdPublicKey {
self.clone()
}
}