63 lines
1.6 KiB
Rust
63 lines
1.6 KiB
Rust
// Copyright 2015, 2016 Ethcore (UK) Ltd.
|
|
// This file is part of Parity.
|
|
|
|
// Parity 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 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. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
use keccak::Keccak256;
|
|
use super::{KeyPair, Error, Generator};
|
|
|
|
/// Simple brainwallet.
|
|
pub struct Brain(String);
|
|
|
|
impl Brain {
|
|
pub fn new(s: String) -> Self {
|
|
Brain(s)
|
|
}
|
|
}
|
|
|
|
impl Generator for Brain {
|
|
fn generate(self) -> Result<KeyPair, Error> {
|
|
let seed = self.0;
|
|
let mut secret = seed.bytes().collect::<Vec<u8>>().keccak256();
|
|
|
|
let mut i = 0;
|
|
loop {
|
|
secret = secret.keccak256();
|
|
|
|
match i > 16384 {
|
|
false => i += 1,
|
|
true => {
|
|
let result = KeyPair::from_secret(secret.clone().into());
|
|
if result.as_ref().ok().map_or(false, |r| r.address()[0] == 0) {
|
|
return result;
|
|
}
|
|
},
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use {Brain, Generator};
|
|
|
|
#[test]
|
|
fn test_brain() {
|
|
let words = "this is sparta!".to_owned();
|
|
let first_keypair = Brain(words.clone()).generate().unwrap();
|
|
let second_keypair = Brain(words.clone()).generate().unwrap();
|
|
assert_eq!(first_keypair.secret(), second_keypair.secret());
|
|
}
|
|
}
|