openethereum/parity/secretstore/nodekeypair.rs

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// Copyright 2015-2020 Parity Technologies (UK) Ltd.
// This file is part of Parity Ethereum.
// Parity Ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity Ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity Ethereum. If not, see <http://www.gnu.org/licenses/>.
//! Key pair with signing ability
use std::sync::Arc;
use accounts::AccountProvider;
use ethkey::Password;
use parity_crypto::publickey::public_to_address;
use ethereum_types::{H256, Address, Public};
use parity_crypto::publickey::{Signature, Error as EthKeyError};
use ethcore_secretstore::SigningKeyPair;
pub struct KeyStoreNodeKeyPair {
account_provider: Arc<AccountProvider>,
address: Address,
public: Public,
password: Password,
}
impl KeyStoreNodeKeyPair {
pub fn new(account_provider: Arc<AccountProvider>, address: Address, password: Password) -> Result<Self, EthKeyError> {
let public = account_provider.account_public(address.clone(), &password).map_err(|e| EthKeyError::Custom(format!("{}", e)))?;
Ok(KeyStoreNodeKeyPair {
account_provider,
address,
public,
password,
})
}
}
impl SigningKeyPair for KeyStoreNodeKeyPair {
fn public(&self) -> &Public {
&self.public
}
fn address(&self) -> Address {
public_to_address(&self.public)
}
fn sign(&self, data: &H256) -> Result<Signature, EthKeyError> {
self.account_provider.sign(self.address.clone(), Some(self.password.clone()), data.clone())
.map_err(|e| EthKeyError::Custom(format!("{}", e)))
}
}