70 lines
2.1 KiB
Rust
70 lines
2.1 KiB
Rust
// Copyright 2015-2020 Parity Technologies (UK) Ltd.
|
|
// This file is part of OpenEthereum.
|
|
|
|
// OpenEthereum 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.
|
|
|
|
// OpenEthereum 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 OpenEthereum. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
use parity_crypto::{
|
|
publickey::{KeyPair, Secret},
|
|
Keccak256,
|
|
};
|
|
use parity_wordlist;
|
|
|
|
/// Simple brainwallet.
|
|
pub struct Brain(String);
|
|
|
|
impl Brain {
|
|
pub fn new(s: String) -> Self {
|
|
Brain(s)
|
|
}
|
|
|
|
pub fn validate_phrase(phrase: &str, expected_words: usize) -> Result<(), ::WordlistError> {
|
|
parity_wordlist::validate_phrase(phrase, expected_words)
|
|
}
|
|
|
|
pub fn generate(&mut self) -> KeyPair {
|
|
let seed = self.0.clone();
|
|
let mut secret = seed.into_bytes().keccak256();
|
|
|
|
let mut i = 0;
|
|
loop {
|
|
secret = secret.keccak256();
|
|
|
|
match i > 16384 {
|
|
false => i += 1,
|
|
true => {
|
|
if let Ok(pair) = Secret::import_key(&secret).and_then(KeyPair::from_secret) {
|
|
if pair.address()[0] == 0 {
|
|
trace!("Testing: {}, got: {:?}", self.0, pair.address());
|
|
return pair;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use Brain;
|
|
|
|
#[test]
|
|
fn test_brain() {
|
|
let words = "this is sparta!".to_owned();
|
|
let first_keypair = Brain::new(words.clone()).generate();
|
|
let second_keypair = Brain::new(words.clone()).generate();
|
|
assert_eq!(first_keypair.secret(), second_keypair.secret());
|
|
}
|
|
}
|