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Introduce better hashing.

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- Blake2 for secure hashing
- XX for fast hashing
This commit is contained in:
Gav
2018-01-19 14:17:56 +01:00
parent 748ee54870
commit c29313c618
24 changed files with 307 additions and 98 deletions
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substrate/wasm-runtime/polkadot/src/support/primitives.rs
+12 -4
View File
@@ -3,7 +3,7 @@ use streamreader::StreamReader;
use joiner::Joiner;
use slicable::{Slicable, NonTrivialSlicable};
use function::Function;
use runtime_support::{size_of, keccak256, ed25519_verify};
use runtime_support::{size_of, blake2_256, twox_128, twox_256, ed25519_verify};
#[cfg(test)]
use std::fmt;
@@ -109,12 +109,20 @@ impl Slicable for Transaction {
}
pub trait Hashable: Sized {
fn keccak256(&self) -> [u8; 32];
fn blake2_256(&self) -> [u8; 32];
fn twox_128(&self) -> [u8; 16];
fn twox_256(&self) -> [u8; 32];
}
impl<T: Slicable> Hashable for T {
fn keccak256(&self) -> [u8; 32] {
keccak256(&self.to_vec())
fn blake2_256(&self) -> [u8; 32] {
blake2_256(&self.to_vec())
}
fn twox_128(&self) -> [u8; 16] {
twox_128(&self.to_vec())
}
fn twox_256(&self) -> [u8; 32] {
twox_256(&self.to_vec())
}
}
substrate/wasm-runtime/polkadot/src/support/storable.rs
+5 -5
View File
@@ -1,7 +1,7 @@
use slicable::Slicable;
use endiansensitive::EndianSensitive;
use keyedvec::KeyedVec;
use runtime_support;
use runtime_support::{self, twox_128, Vec};
pub trait Storable {
fn lookup_default(key: &[u8]) -> Self where Self: Sized + Default { Self::lookup(key).unwrap_or_else(Default::default) }
@@ -9,20 +9,20 @@ pub trait Storable {
fn store(&self, key: &[u8]);
}
pub fn kill(key: &[u8]) { runtime_support::set_storage(key, b""); }
pub fn kill(key: &[u8]) { runtime_support::set_storage(&twox_128(key)[..], b""); }
impl<T: Default + Sized + EndianSensitive> Storable for T {
fn lookup(key: &[u8]) -> Option<Self> {
Slicable::set_as_slice(|out| runtime_support::read_storage(key, out) == out.len())
Slicable::set_as_slice(|out| runtime_support::read_storage(&twox_128(key)[..], out) == out.len())
}
fn store(&self, key: &[u8]) {
self.as_slice_then(|slice| runtime_support::set_storage(key, slice));
self.as_slice_then(|slice| runtime_support::set_storage(&twox_128(key)[..], slice));
}
}
impl Storable for [u8] {
fn store(&self, key: &[u8]) {
runtime_support::set_storage(key, self)
runtime_support::set_storage(&twox_128(key)[..], self)
}
}