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add section on updating IBC clients

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William Banfield
2022-04-27 16:47:16 -04:00
parent 1cb06bb90f
commit 344b1b9c67
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docs/rfc/rfc-018-bls-agg-exploration.md
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@@ -297,6 +297,16 @@ either first implement 'commit-time' signature aggregation, or implement both
'vote-time' signature aggregation while also updating the block creation and
verification protocols to allow for aggregated signatures.
### Updating IBC clients
In order for IBC clients to function, they must be able to perform light-client
verification of blocks on counterparty chains. Because BLS signatures are not
currently part of light-clients, chains that transmit messages over IBC
cannot update to using BLS signatures without their counterparties first
being upgraded to parse and verify BLS. If chains upgrade without their
counterparties first updating, they will lose the ability to interoperate with
non-updated chains.
### Rogue key attack prevention
Generating an aggregated signature requires guarding against what is called