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Multisig ISM
Verify messages using validator signatures
The
MultisigISM is one of the most commonly used ISM types. These ISMs verify that m of n Validators have attested to the validity of a particular interchain message.MultisigISMs must implement the IMultisigIsm interface.// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.6.0;
import {IInterchainSecurityModule} from "./IInterchainSecurityModule.sol";
interface IMultisigIsm is IInterchainSecurityModule {
/**
* @notice Returns the set of validators responsible for verifying _message
* and the number of signatures required
* @dev Can change based on the content of _message
* @param _message Hyperlane formatted interchain message
* @return validators The array of validator addresses
* @return threshold The number of validator signatures needed
*/
function validatorsAndThreshold(bytes calldata _message)
external
view
returns (address[] memory validators, uint8 threshold);
}
The hyperlane-monorepo contains
MultisigISM implementations (including a legacy version and more gas-efficient versions deployable via factories) that application developers can deploy off-the-shelf, specifying their desired configuration.Developers can configure, for each origin chain, a set of
n Validators, and the number of validator signatures (m) needed to verify a message.Validator signatures are not specific to an ISM. In other words, developers can configure their
MultisigISM to use any validator that's running on Hyperlane and it will "just work".The hyperlane-deploy repo contains the tooling and instructions needed to deploy and configure a
MultisigISM.The hyperlane-monorepo contains an abstract
MultisigISM implementation that application developers can fork.Developers simply need to implement the
validatorsAndThreshold() function.By creating a custom implementation, application developers can tailor the security provided by a
MultisigISM to the needs of their application.For example, a custom implementation could vary the number of signatures required, based on the content of the message being verified.
Last modified 3mo ago