75 lines
2.2 KiB
Rust
75 lines
2.2 KiB
Rust
// Copyright 2015-2020 Parity Technologies (UK) Ltd.
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// This file is part of OpenEthereum.
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// OpenEthereum 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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// OpenEthereum 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 OpenEthereum. If not, see <http://www.gnu.org/licenses/>.
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use super::{Generator, KeyPair, Secret};
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use keccak::Keccak256;
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use parity_wordlist;
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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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pub fn validate_phrase(phrase: &str, expected_words: usize) -> Result<(), ::WordlistError> {
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parity_wordlist::validate_phrase(phrase, expected_words)
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}
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}
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impl Generator for Brain {
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type Error = ::Void;
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fn generate(&mut self) -> Result<KeyPair, Self::Error> {
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let seed = self.0.clone();
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let mut secret = seed.into_bytes().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(pair) =
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Secret::from_unsafe_slice(&secret).and_then(KeyPair::from_secret)
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{
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if pair.address()[0] == 0 {
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trace!("Testing: {}, got: {:?}", self.0, pair.address());
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return Ok(pair);
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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;
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use 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::new(words.clone()).generate().unwrap();
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let second_keypair = Brain::new(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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