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Add proof-of-possession hash fn

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Paul Hauner 2018-10-20 03:09:42 +11:00
parent f00b39dd3c
commit d5675062c1
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1 changed files with 9 additions and 0 deletions
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9
beacon_chain/utils/hashing/src/lib.rs
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@ -6,3 +6,12 @@ pub fn canonical_hash(input: &[u8]) -> Vec<u8> {
let result = blake2b(64, &[], input); let result = blake2b(64, &[], input);
result.as_bytes()[0..32].to_vec() result.as_bytes()[0..32].to_vec()
} }
pub fn proof_of_possession_hash(input: &[u8]) -> Vec<u8> {
let result = blake2b(64, &[], input);
let mut hash = result.as_bytes()[32..64].to_vec();
// TODO: this padding is not part of the spec, it is required otherwise Milagro will panic.
// We should either drop the padding or ensure the padding is in the spec.
hash.append(&mut vec![0; 18]);
hash
}