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Version: Helium

Permissioned.Sol

Permission​

Used to pass both the public key and signature data within transactions

Should be used with Signature-based modifiers for access control

struct Permission {
  bytes32 publicKey;
  bytes signature;
}

Abstract contract that provides EIP-712 based signature verification for access control. To learn more about why this can be important, and what EIP712 is, refer to our Permits & Access Control.

This contract should be inherited by other contracts to provide EIP-712 signature validated access control

SignerNotMessageSender​

error SignerNotMessageSender()

Emitted when the signer is not the message sender

SignerNotOwner​

error SignerNotOwner()

Emitted when the signer is not the specified owner

constructor​

constructor() internal

Constructor that initializes EIP712 domain separator with a name and version solhint-disable-next-line func-visibility, no-empty-blocks

onlySender​

modifier onlySender(struct Permission permission)

Modifier that requires the provided signature to be signed by the message sender

Parameters​

NameTypeDescription
permissionstruct PermissionData structure containing the public key and the signature to be verified

onlyPermitted​

modifier onlyPermitted(struct Permission permission, address owner)

Modifier that requires the provided signature to be signed by a specific owner address

Parameters​

NameTypeDescription
permissionstruct PermissionData structure containing the public key and the signature to be verified
owneraddressThe expected owner of the public key to match against the recovered signer