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[offchain] Support for sign & verify for crypto keys (#3023)

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* Implement sign & verify.

* Use phrases and password.

* Sign & verify with authority keys.

* Fix tests.

* WiP

* WiP

* Allow the caller to decide on 'CryptoKind'.

* Remove TODO.

* Make seed private back.

* Fix non-std build and bump version.

* Use Into<u32> instead of asses.

* Add missing typedef.
This commit is contained in:
Tomasz Drwięga
2019-07-09 17:09:14 +02:00
committed by Gavin Wood
parent ed630e5eda
commit e729dbabbe
22 changed files with 647 additions and 178 deletions
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substrate/core/keystore/src/lib.rs
+8 -8
View File
@@ -23,7 +23,7 @@ use std::path::PathBuf;
use std::fs::{self, File};
use std::io::{self, Write};
use substrate_primitives::crypto::{KeyTypeId, Pair, Public, TypedKey};
use substrate_primitives::crypto::{KeyTypeId, Pair, Public};
/// Keystore error.
#[derive(Debug, derive_more::Display, derive_more::From)]
@@ -69,7 +69,7 @@ impl Store {
Ok(Store { path, additional: HashMap::new() })
}
fn get_pair<TPair: Pair + TypedKey>(&self, public: &TPair::Public) -> Result<Option<TPair>> {
fn get_pair<TPair: Pair>(&self, public: &TPair::Public) -> Result<Option<TPair>> {
let key = (TPair::KEY_TYPE, public.to_raw_vec());
if let Some(bytes) = self.additional.get(&key) {
let pair = TPair::from_seed_slice(bytes)
@@ -79,13 +79,13 @@ impl Store {
Ok(None)
}
fn insert_pair<TPair: Pair + TypedKey>(&mut self, pair: &TPair) {
fn insert_pair<TPair: Pair>(&mut self, pair: &TPair) {
let key = (TPair::KEY_TYPE, pair.public().to_raw_vec());
self.additional.insert(key, pair.to_raw_vec());
}
/// Generate a new key, placing it into the store.
pub fn generate<TPair: Pair + TypedKey>(&self, password: &str) -> Result<TPair> {
pub fn generate<TPair: Pair>(&self, password: &str) -> Result<TPair> {
let (pair, phrase, _) = TPair::generate_with_phrase(Some(password));
let mut file = File::create(self.key_file_path::<TPair>(&pair.public()))?;
::serde_json::to_writer(&file, &phrase)?;
@@ -94,7 +94,7 @@ impl Store {
}
/// Create a new key from seed. Do not place it into the store.
pub fn generate_from_seed<TPair: Pair + TypedKey>(&mut self, seed: &str) -> Result<TPair> {
pub fn generate_from_seed<TPair: Pair>(&mut self, seed: &str) -> Result<TPair> {
let pair = TPair::from_string(seed, None)
.ok().ok_or(Error::InvalidSeed)?;
self.insert_pair(&pair);
@@ -102,7 +102,7 @@ impl Store {
}
/// Load a key file with given public key.
pub fn load<TPair: Pair + TypedKey>(&self, public: &TPair::Public, password: &str) -> Result<TPair> {
pub fn load<TPair: Pair>(&self, public: &TPair::Public, password: &str) -> Result<TPair> {
if let Some(pair) = self.get_pair(public)? {
return Ok(pair)
}
@@ -120,7 +120,7 @@ impl Store {
}
/// Get public keys of all stored keys.
pub fn contents<TPublic: Public + TypedKey>(&self) -> Result<Vec<TPublic>> {
pub fn contents<TPublic: Public>(&self) -> Result<Vec<TPublic>> {
let mut public_keys: Vec<TPublic> = self.additional.keys()
.filter_map(|(ty, public)| {
if *ty != TPublic::KEY_TYPE {
@@ -151,7 +151,7 @@ impl Store {
Ok(public_keys)
}
fn key_file_path<TPair: Pair + TypedKey>(&self, public: &TPair::Public) -> PathBuf {
fn key_file_path<TPair: Pair>(&self, public: &TPair::Public) -> PathBuf {
let mut buf = self.path.clone();
let bytes: [u8; 4] = TPair::KEY_TYPE.to_le_bytes();
let key_type = hex::encode(bytes);