98b7c07171
* Update `add_license` script * run script * add `remove duplicate lines script` and run it * Revert changes `English spaces` * strip whitespaces * Revert `GPL` in files with `apache/mit license` * don't append `gpl license` in files with other lic * Don't append `gpl header` in files with other lic. * re-ran script * include c and cpp files too * remove duplicate header * rebase nit
71 lines
1.9 KiB
Rust
71 lines
1.9 KiB
Rust
// Copyright 2015-2018 Parity Technologies (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 super::{Generator, KeyPair, Error, Brain};
|
|
use parity_wordlist as wordlist;
|
|
|
|
/// Tries to find brain-seed keypair with address starting with given prefix.
|
|
pub struct BrainPrefix {
|
|
prefix: Vec<u8>,
|
|
iterations: usize,
|
|
no_of_words: usize,
|
|
last_phrase: String,
|
|
}
|
|
|
|
impl BrainPrefix {
|
|
pub fn new(prefix: Vec<u8>, iterations: usize, no_of_words: usize) -> Self {
|
|
BrainPrefix {
|
|
prefix,
|
|
iterations,
|
|
no_of_words,
|
|
last_phrase: String::new(),
|
|
}
|
|
}
|
|
|
|
pub fn phrase(&self) -> &str {
|
|
&self.last_phrase
|
|
}
|
|
}
|
|
|
|
impl Generator for BrainPrefix {
|
|
type Error = Error;
|
|
|
|
fn generate(&mut self) -> Result<KeyPair, Error> {
|
|
for _ in 0..self.iterations {
|
|
let phrase = wordlist::random_phrase(self.no_of_words);
|
|
let keypair = Brain::new(phrase.clone()).generate().unwrap();
|
|
if keypair.address().starts_with(&self.prefix) {
|
|
self.last_phrase = phrase;
|
|
return Ok(keypair)
|
|
}
|
|
}
|
|
|
|
Err(Error::Custom("Could not find keypair".into()))
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use {Generator, BrainPrefix};
|
|
|
|
#[test]
|
|
fn prefix_generator() {
|
|
let prefix = vec![0x00u8];
|
|
let keypair = BrainPrefix::new(prefix.clone(), usize::max_value(), 12).generate().unwrap();
|
|
assert!(keypair.address().starts_with(&prefix));
|
|
}
|
|
}
|