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Ethash nonce is H64 not a u64.

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This commit is contained in:
Gav Wood 2016-01-27 14:44:02 +01:00
parent 16138533bc
commit 9979e159bd
2 changed files with 15 additions and 5 deletions
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8
src/ethereum/ethash.rs
View File

@ -101,7 +101,7 @@ impl Engine for Ethash {
fn verify_block_basic(&self, header: &Header, _block: Option<&[u8]>) -> result::Result<(), Error> { fn verify_block_basic(&self, header: &Header, _block: Option<&[u8]>) -> result::Result<(), Error> {
// check the seal fields. // check the seal fields.
try!(UntrustedRlp::new(&header.seal[0]).as_val::<H256>()); try!(UntrustedRlp::new(&header.seal[0]).as_val::<H256>());
try!(UntrustedRlp::new(&header.seal[1]).as_val::<u64>()); try!(UntrustedRlp::new(&header.seal[1]).as_val::<H64>());
let min_difficulty = decode(self.spec().engine_params.get("minimumDifficulty").unwrap()); let min_difficulty = decode(self.spec().engine_params.get("minimumDifficulty").unwrap());
if header.difficulty < min_difficulty { if header.difficulty < min_difficulty {
@ -109,7 +109,7 @@ impl Engine for Ethash {
} }
let difficulty = Ethash::boundary_to_difficulty(&Ethash::from_ethash(quick_get_difficulty( let difficulty = Ethash::boundary_to_difficulty(&Ethash::from_ethash(quick_get_difficulty(
&Ethash::to_ethash(header.bare_hash()), &Ethash::to_ethash(header.bare_hash()),
header.nonce(), header.nonce().low_u64(),
&Ethash::to_ethash(header.mix_hash())))); &Ethash::to_ethash(header.mix_hash()))));
if difficulty < header.difficulty { if difficulty < header.difficulty {
return Err(From::from(BlockError::InvalidEthashDifficulty(Mismatch { expected: header.difficulty, found: difficulty }))); return Err(From::from(BlockError::InvalidEthashDifficulty(Mismatch { expected: header.difficulty, found: difficulty })));
@ -118,7 +118,7 @@ impl Engine for Ethash {
} }
fn verify_block_unordered(&self, header: &Header, _block: Option<&[u8]>) -> result::Result<(), Error> { fn verify_block_unordered(&self, header: &Header, _block: Option<&[u8]>) -> result::Result<(), Error> {
let result = self.pow.compute_light(header.number as u64, &Ethash::to_ethash(header.bare_hash()), header.nonce()); let result = self.pow.compute_light(header.number as u64, &Ethash::to_ethash(header.bare_hash()), header.nonce().low_u64());
let mix = Ethash::from_ethash(result.mix_hash); let mix = Ethash::from_ethash(result.mix_hash);
let difficulty = Ethash::boundary_to_difficulty(&Ethash::from_ethash(result.value)); let difficulty = Ethash::boundary_to_difficulty(&Ethash::from_ethash(result.value));
if mix != header.mix_hash() { if mix != header.mix_hash() {
@ -208,7 +208,7 @@ impl Ethash {
} }
impl Header { impl Header {
fn nonce(&self) -> u64 { fn nonce(&self) -> H64 {
decode(&self.seal()[1]) decode(&self.seal()[1])
} }
fn mix_hash(&self) -> H256 { fn mix_hash(&self) -> H256 {

12
util/src/hash.rs
View File

@ -41,6 +41,8 @@ pub trait FixedHash: Sized + BytesConvertable + Populatable + FromStr + Default
fn contains<'a>(&'a self, b: &'a Self) -> bool; fn contains<'a>(&'a self, b: &'a Self) -> bool;
/// TODO [debris] Please document me /// TODO [debris] Please document me
fn is_zero(&self) -> bool; fn is_zero(&self) -> bool;
/// Return the lowest 8 bytes interpreted as a BigEndian integer.
fn low_u64(&self) -> u64;
} }
fn clean_0x(s: &str) -> &str { fn clean_0x(s: &str) -> &str {
@ -71,8 +73,8 @@ macro_rules! impl_hash {
&self.0 &self.0
} }
} }
impl DerefMut for $from {
impl DerefMut for $from {
#[inline] #[inline]
fn deref_mut(&mut self) -> &mut [u8] { fn deref_mut(&mut self) -> &mut [u8] {
&mut self.0 &mut self.0
@ -190,6 +192,14 @@ macro_rules! impl_hash {
fn is_zero(&self) -> bool { fn is_zero(&self) -> bool {
self.eq(&Self::new()) self.eq(&Self::new())
} }
fn low_u64(&self) -> u64 {
let mut ret = 0u64;
for i in 0..min($size, 8) {
ret |= (self.0[$size - 1 - i] as u64) << (i * 8);
}
ret
}
} }
impl FromStr for $from { impl FromStr for $from {