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Merge pull request #113 from hammeWang/develop
complete ethereum-chainrelay ingredient
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| #[derive(Debug, Clone, PartialEq, Eq)] | ||
| pub struct Header(Vec<u8>); | ||
| impl Header { | ||
| /// Create a new owning header view. | ||
| /// Expects the data to be an RLP-encoded header -- any other case will likely lead to | ||
| /// panics further down the line. | ||
| pub fn new(encoded: Vec<u8>) -> Self { | ||
| Header(encoded) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| /// Define errors when verifying eth blocks | ||
| use super::*; | ||
| #[cfg(feature = "std")] | ||
| use std::error::Error; | ||
| #[derive(PartialEq, Eq, Clone, Copy, Debug)] | ||
| /// Error indicating value found is outside of a valid range. | ||
| pub struct OutOfBounds<T> { | ||
| /// Minimum allowed value. | ||
| pub min: Option<T>, | ||
| /// Maximum allowed value. | ||
| pub max: Option<T>, | ||
| /// Value found. | ||
| pub found: T, | ||
| } | ||
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| #[derive(PartialEq, Eq, Clone, Copy, Debug)] | ||
| /// Error indicating an expected value was not found. | ||
| pub struct Mismatch<T> { | ||
| /// Value expected. | ||
| pub expected: T, | ||
| /// Value found. | ||
| pub found: T, | ||
| } | ||
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| #[derive(PartialEq, Eq, Clone, Copy, Debug)] | ||
| pub enum BlockError { | ||
| InvalidProofOfWork(OutOfBounds<U256>), | ||
| DifficultyOutOfBounds(OutOfBounds<U256>), | ||
| InvalidSealArity(Mismatch<usize>), | ||
| Rlp(&'static str), | ||
| } | ||
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| //#[cfg(feature = "std")] | ||
| //impl Error for BlockError { | ||
| // fn description(&self) -> &str { | ||
| // "Block error" | ||
| // } | ||
| //} |
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| @@ -0,0 +1,56 @@ | ||
| // Copyright 2015-2019 Parity Technologies (UK) Ltd. | ||
| // This file is part of Parity Ethereum. | ||
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|
||
| // Parity Ethereum 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 Ethereum 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. | ||
|
|
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| // You should have received a copy of the GNU General Public License | ||
| // along with Parity Ethereum. If not, see <http://www.gnu.org/licenses/>. | ||
|
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| extern crate keccak_hash as hash; | ||
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| pub type H256 = [u8; 32]; | ||
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| pub mod keccak_512 { | ||
| use super::hash; | ||
|
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| pub use self::hash::keccak_512_unchecked as unchecked; | ||
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| pub fn write(input: &[u8], output: &mut [u8]) { | ||
| hash::keccak_512(input, output); | ||
| } | ||
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| pub fn inplace(input: &mut [u8]) { | ||
| // This is safe since `keccak_*` uses an internal buffer and copies the result to the output. This | ||
| // means that we can reuse the input buffer for both input and output. | ||
| unsafe { | ||
| hash::keccak_512_unchecked(input.as_mut_ptr(), input.len(), input.as_ptr(), input.len()); | ||
| } | ||
| } | ||
| } | ||
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| pub mod keccak_256 { | ||
| use super::hash; | ||
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| pub use self::hash::keccak_256_unchecked as unchecked; | ||
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| #[allow(dead_code)] | ||
| pub fn write(input: &[u8], output: &mut [u8]) { | ||
| hash::keccak_256(input, output); | ||
| } | ||
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| pub fn inplace(input: &mut [u8]) { | ||
| // This is safe since `keccak_*` uses an internal buffer and copies the result to the output. This | ||
| // means that we can reuse the input buffer for both input and output. | ||
| unsafe { | ||
| hash::keccak_256_unchecked(input.as_mut_ptr(), input.len(), input.as_ptr(), input.len()); | ||
| } | ||
| } | ||
| } |
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