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use core::ops::Deref;
use encdec::{Encode, DecodeOwned};
use ed25519_dalek::{SECRET_KEY_LENGTH, PUBLIC_KEY_LENGTH};
use rand_core::{RngCore, CryptoRng};
use crate::ManifestError;
#[derive(Debug)]
pub struct PrivateKey (ed25519_dalek::SecretKey);
impl PrivateKey {
pub fn generate<RNG: RngCore + CryptoRng>(rng: &mut RNG) -> Self {
let k = ed25519_dalek::SecretKey::generate(rng);
Self(k)
}
pub fn inner(self) -> ed25519_dalek::SecretKey {
self.0
}
}
impl From<ed25519_dalek::SecretKey> for PrivateKey {
fn from(value: ed25519_dalek::SecretKey) -> Self {
Self(value)
}
}
impl Deref for PrivateKey {
type Target = ed25519_dalek::SecretKey;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl Clone for PrivateKey {
fn clone(&self) -> Self {
let b = self.0.as_bytes();
let s = ed25519_dalek::SecretKey::from_bytes(b).unwrap();
Self(s)
}
}
impl core::fmt::Display for PrivateKey {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
for b in self.0.as_bytes() {
write!(f, "{:02x}", b)?;
}
Ok(())
}
}
impl core::str::FromStr for PrivateKey {
type Err = ManifestError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
let mut b = [0u8; SECRET_KEY_LENGTH];
hex::decode_to_slice(s, &mut b)
.map_err(|_e| ManifestError::InvalidHex )?;
let k = ed25519_dalek::SecretKey::from_bytes(&b)
.map_err(|_e| ManifestError::InvalidPrivateKey )?;
Ok(Self(k))
}
}
impl PartialEq for PrivateKey {
fn eq(&self, other: &Self) -> bool {
ed25519_dalek::PublicKey::from(&self.0) == ed25519_dalek::PublicKey::from(&other.0)
}
}
#[derive(Clone, Debug, PartialEq)]
pub struct PublicKey (pub(crate) ed25519_dalek::PublicKey);
impl PublicKey {
pub fn inner(self) -> ed25519_dalek::PublicKey {
self.0
}
}
impl From<&PrivateKey> for PublicKey {
fn from(value: &PrivateKey) -> Self {
Self(ed25519_dalek::PublicKey::from(&value.0))
}
}
impl From<&ed25519_dalek::SecretKey> for PublicKey {
fn from(value: &ed25519_dalek::SecretKey) -> Self {
Self(ed25519_dalek::PublicKey::from(value))
}
}
impl From<ed25519_dalek::PublicKey> for PublicKey {
fn from(value: ed25519_dalek::PublicKey) -> Self {
Self(value)
}
}
impl From<&ed25519_dalek::PublicKey> for PublicKey {
fn from(value: &ed25519_dalek::PublicKey) -> Self {
Self(value.clone())
}
}
impl Deref for PublicKey {
type Target = ed25519_dalek::PublicKey;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl core::fmt::Display for PublicKey {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
for b in self.0.as_bytes() {
write!(f, "{:02x}", b)?;
}
Ok(())
}
}
impl core::str::FromStr for PublicKey {
type Err = ManifestError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
let mut b = [0u8; PUBLIC_KEY_LENGTH];
hex::decode_to_slice(s, &mut b)
.map_err(|_e| ManifestError::InvalidHex )?;
let k = ed25519_dalek::PublicKey::from_bytes(&b)
.map_err(|_e| ManifestError::InvalidPrivateKey )?;
Ok(Self(k))
}
}
impl Encode for PublicKey {
type Error = encdec::Error;
fn encode_len(&self) -> Result<usize, Self::Error> {
Ok(PUBLIC_KEY_LENGTH)
}
fn encode(&self, buff: &mut [u8]) -> Result<usize, Self::Error> {
if buff.len() < PUBLIC_KEY_LENGTH {
return Err(encdec::Error::Length);
}
buff[..PUBLIC_KEY_LENGTH].copy_from_slice(self.0.as_bytes());
Ok(PUBLIC_KEY_LENGTH)
}
}
impl DecodeOwned for PublicKey {
type Output = PublicKey;
type Error = encdec::Error;
fn decode_owned(buff: &[u8]) -> Result<(Self::Output, usize), Self::Error> {
if buff.len() < PUBLIC_KEY_LENGTH {
return Err(encdec::Error::Length);
}
let mut d = [0u8; PUBLIC_KEY_LENGTH];
d.copy_from_slice(&buff[..PUBLIC_KEY_LENGTH]);
let public_key = ed25519_dalek::PublicKey::from_bytes(&d)
.map_err(|_| encdec::Error::Length)?;
Ok((Self(public_key), PUBLIC_KEY_LENGTH))
}
}