65 lines
1.7 KiB
Rust
65 lines
1.7 KiB
Rust
// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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use keccak::Keccak256;
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use super::{KeyPair, Error, Generator, Secret};
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/// Simple brainwallet.
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pub struct Brain(String);
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impl Brain {
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pub fn new(s: String) -> Self {
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Brain(s)
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}
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}
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impl Generator for Brain {
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fn generate(self) -> Result<KeyPair, Error> {
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let seed = self.0;
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let mut secret = seed.bytes().collect::<Vec<u8>>().keccak256();
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let mut i = 0;
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loop {
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secret = secret.keccak256();
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match i > 16384 {
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false => i += 1,
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true => {
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if let Ok(secret) = Secret::from_slice(&secret) {
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let result = KeyPair::from_secret(secret);
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if result.as_ref().ok().map_or(false, |r| r.address()[0] == 0) {
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return result;
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}
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}
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},
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}
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}
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}
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}
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#[cfg(test)]
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mod tests {
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use {Brain, Generator};
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#[test]
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fn test_brain() {
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let words = "this is sparta!".to_owned();
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let first_keypair = Brain(words.clone()).generate().unwrap();
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let second_keypair = Brain(words.clone()).generate().unwrap();
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assert_eq!(first_keypair.secret(), second_keypair.secret());
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}
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}
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