Zeroize secrets when a party is excluded/a new party joins.
The following scenarios can be observed:
1) party x is in new group but not in old group - receive n messages, check proofs for all, reconstruct from t+1
2) party x is in old group but not in new group - receiver n messages, check proofs for all, if all pass - they delete the old share
3) party x is in both old and new groups - receive n messages, check proofs for all , if all pass - reconstruct + delete old share
Zeroize secrets when a party is excluded/a new party joins.
The following scenarios can be observed: 1) party x is in new group but not in old group - receive n messages, check proofs for all, reconstruct from t+1 2) party x is in old group but not in new group - receiver n messages, check proofs for all, if all pass - they delete the old share 3) party x is in both old and new groups - receive n messages, check proofs for all , if all pass - reconstruct + delete old share