71 lines
1.9 KiB
Rust
71 lines
1.9 KiB
Rust
// Copyright 2015-2017 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 std::fmt;
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use std::ops::Deref;
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use std::str::FromStr;
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use secp256k1::key;
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use bigint::hash::H256;
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use {Error};
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#[derive(Clone, PartialEq, Eq)]
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pub struct Secret {
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inner: H256,
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}
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impl fmt::Debug for Secret {
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fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
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write!(fmt, "Secret: 0x{:x}{:x}..{:x}{:x}", self.inner[0], self.inner[1], self.inner[30], self.inner[31])
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}
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}
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impl Secret {
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fn from_slice_unchecked(key: &[u8]) -> Self {
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assert_eq!(32, key.len(), "Caller should provide 32-byte length slice");
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let mut h = H256::default();
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h.copy_from_slice(&key[0..32]);
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Secret { inner: h }
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}
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pub fn from_slice(key: &[u8]) -> Result<Self, Error> {
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let secret = key::SecretKey::from_slice(&super::SECP256K1, key)?;
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Ok(secret.into())
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}
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}
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impl FromStr for Secret {
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type Err = Error;
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fn from_str(s: &str) -> Result<Self, Self::Err> {
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let hash = H256::from_str(s).map_err(|e| Error::Custom(format!("{:?}", e)))?;
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Self::from_slice(&hash)
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}
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}
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impl From<key::SecretKey> for Secret {
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fn from(key: key::SecretKey) -> Self {
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Self::from_slice_unchecked(&key[0..32])
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}
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}
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impl Deref for Secret {
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type Target = H256;
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fn deref(&self) -> &Self::Target {
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&self.inner
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}
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}
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