46 lines
1.3 KiB
Rust
46 lines
1.3 KiB
Rust
// Copyright 2015-2020 Parity Technologies (UK) Ltd.
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// This file is part of Parity Ethereum.
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// Parity Ethereum 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 Ethereum 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 Ethereum. If not, see <http://www.gnu.org/licenses/>.
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use rand::{Rng, RngCore, rngs::OsRng, distributions::Alphanumeric};
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pub trait Random {
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fn random() -> Self where Self: Sized;
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}
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impl Random for [u8; 16] {
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fn random() -> Self {
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let mut result = [0u8; 16];
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let mut rng = OsRng;
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rng.fill_bytes(&mut result);
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result
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}
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}
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impl Random for [u8; 32] {
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fn random() -> Self {
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let mut result = [0u8; 32];
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let mut rng = OsRng;
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rng.fill_bytes(&mut result);
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result
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}
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}
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/// Generate a random string of given length.
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pub fn random_string(length: usize) -> String {
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let rng = OsRng;
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rng.sample_iter(&Alphanumeric).take(length).collect()
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}
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