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Merge pull request #779 from ethereum/JustinDrake-patch-4 

Move to SHA256
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Danny Ryan 2019-03-26 07:19:46 -06:00 committed by GitHub
parent db63b3e013 be57cafbfb
commit 2d413be91f
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2 changed files with 5 additions and 6 deletions
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2
specs/core/0_beacon-chain.md
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@ -668,7 +668,7 @@ def xor(bytes1: Bytes32, bytes2: Bytes32) -> Bytes32:
### `hash` ### `hash`
The hash function is denoted by `hash`. In Phase 0 the beacon chain is deployed with the same hash function as Ethereum 1.0, i.e. Keccak-256 (also incorrectly known as SHA3). The `hash` function is SHA256.
Note: We aim to migrate to a S[T/N]ARK-friendly hash function in a future Ethereum 2.0 deployment phase. Note: We aim to migrate to a S[T/N]ARK-friendly hash function in a future Ethereum 2.0 deployment phase.

9
utils/phase0/hash_function.py
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@ -1,7 +1,6 @@
# from hashlib import sha256 from hashlib import sha256
from eth_utils import keccak # from eth_utils import keccak
# def hash(x): return sha256(x).digest() def hash(x): return sha256(x).digest()
def hash(x): # def hash(x): return keccak(x)
return keccak(x)