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Yorke Rhodes 50f04db1fa Make merkle proofs optional on multisig ISM (#2173) ... ### Description Validators currently sign `(root, index)` checkpoints and during verification, a `message` is passed as calldata, an `id()` is derived, and a `proof` of `id()` at `index` in `root` is verified This provides “all or nothing” censorship resistance guarantees because a validator can only sign roots to allow any contained messages to be processed. We have considered alternatives where validators sign `message` directly and we lose censorship resistance in exchange for eliminating merkle proof verification gas costs. However, if validators sign `(root, index, message)` tuples, we can skip merkle proof verification on the destination chain while still maintaining censorship resistance by providing two valid metadata formats: 1. existing validator signatures and merkle proof verification of inclusion 2. including merkle proof verification for pathway where validators are censoring `message` It’s worth noting the validator is required to index event data to produce this new signature format. However, this does not require historical indexing and new validators being spun up can simply begin indexing from tip. See https://github.com/hyperlane-xyz/hyperlane-monorepo/pull/2187 for validator changes See https://github.com/hyperlane-xyz/hyperlane-monorepo/pull/2248 for relayer and e2e test changes ### Drive-by changes Merkle index also optional ### Related issues - Fixes https://github.com/hyperlane-xyz/hyperlane-monorepo/issues/2192 ### Backward compatibility - new ISM deployment is necessary (we could upgrade implementation in theory) - Validator and relayer upgrades ### Testing Unit (fuzz) Tests, E2E tests		2 years ago
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cursor.rs	Refactor agent event indexing (#2246)	2 years ago
db.rs	Refactor agent event indexing (#2246)	2 years ago
deployed.rs	Prevent calls to `Mailbox.recipientIsm` when the recipient of a message isn't a contract (#1763)	2 years ago
encode.rs	Hyperlane-Core WASM support (#2110)	2 years ago
indexer.rs	Refactor agent event indexing (#2246)	2 years ago
interchain_gas.rs	Deployed Contract Traits (#1561)	2 years ago
interchain_security_module.rs	Make merkle proofs optional on multisig ISM (#2173)	2 years ago
mailbox.rs	Make merkle proofs optional on multisig ISM (#2173)	2 years ago
mod.rs	Refactor agent event indexing (#2246)	2 years ago
multisig_ism.rs	Add relayer support for MultisigIsm and RoutingIsm (#2074)	2 years ago
provider.rs	Prevent calls to `Mailbox.recipientIsm` when the recipient of a message isn't a contract (#1763)	2 years ago
routing_ism.rs	Add relayer support for MultisigIsm and RoutingIsm (#2074)	2 years ago
signing.rs	Hyperlane-Core WASM support (#2110)	2 years ago
validator_announce.rs	Validator automatically self-announces (#2177)	2 years ago