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Optimization for #636 | Perform HAMT SHA256 hashes natively via a sys…
…call (#712) Signed-off-by: shamb0 <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| // Copyright 2019-2022 ChainSafe Systems | ||
| // SPDX-License-Identifier: Apache-2.0, MIT | ||
|
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| // use fvm_ipld_hamt::{Hash, HashAlgorithm, HashedKey}; | ||
| use fvm_ipld_hamt::{Hash, HashAlgorithm}; | ||
| use fvm_sdk as fvm; | ||
| use fvm_shared::crypto::hash::SupportedHashes; | ||
| use std::hash::Hasher; | ||
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| pub type HashedKey = [u8; 32]; | ||
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| #[derive(Default)] | ||
| pub struct RuntimeHasherWrapper(pub Vec<u8>); | ||
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| impl Hasher for RuntimeHasherWrapper { | ||
| fn finish(&self) -> u64 { | ||
| // u64 hash not used in hamt | ||
| 0 | ||
| } | ||
|
|
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| fn write(&mut self, bytes: &[u8]) { | ||
| self.0.extend_from_slice(bytes); | ||
| } | ||
| } | ||
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| #[derive(Default, Debug)] | ||
| pub struct FvmHashSha256; | ||
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| impl HashAlgorithm for FvmHashSha256 { | ||
| fn hash<X>(key: &X) -> HashedKey | ||
| where | ||
| X: Hash + ?Sized, | ||
| { | ||
| let mut rval_digest: HashedKey = Default::default(); | ||
| let mut hasher = RuntimeHasherWrapper::default(); | ||
| key.hash(&mut hasher); | ||
|
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| // TODO :: Enable this when moving to | ||
| // fvm_sdk 3.0.0-alpha.2, | ||
| // looks like fvm_sdk 2.0.0-alpha.3 doesn't support `hash_into()` api | ||
| // fvm::crypto::hash_into(SupportedHashes::Sha2_256, &hasher.0, &mut rval_digest); | ||
|
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| rval_digest.copy_from_slice(&fvm::crypto::hash(SupportedHashes::Sha2_256, &hasher.0)); | ||
|
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| rval_digest | ||
| } | ||
| } |
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