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Perform key share amortization on-chain to avoid discrepancies

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This commit is contained in:
Luke Parker
2024-03-23 23:30:51 -04:00
parent 7408e26781
commit 4cacce5e55
3 changed files with 23 additions and 26 deletions
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10
substrate/validator-sets/primitives/src/lib.rs
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@@ -115,11 +115,11 @@ pub fn report_slashes_message(set: &ValidatorSet, slashes: &[(Public, u32)]) ->
/// maximum.
///
/// Reduction occurs by reducing each validator in a reverse round-robin.
pub fn amortize_excess_key_shares(validators: &mut [(Public, u16)]) {
let total_key_shares = validators.iter().map(|(_, shares)| shares).sum::<u16>();
for i in 0 .. usize::from(
total_key_shares.saturating_sub(u16::try_from(MAX_KEY_SHARES_PER_SET).unwrap()),
) {
pub fn amortize_excess_key_shares(validators: &mut [(Public, u64)]) {
let total_key_shares = validators.iter().map(|(_, shares)| shares).sum::<u64>();
for i in 0 .. usize::try_from(total_key_shares.saturating_sub(u64::from(MAX_KEY_SHARES_PER_SET)))
.unwrap()
{
validators[validators.len() - ((i % validators.len()) + 1)].1 -= 1;
}
}