24 lines
1.0 KiB
Solidity
24 lines
1.0 KiB
Solidity
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pragma solidity >=0.6.12;
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// Author: Louis Holbrook <dev@holbrook.no> 0826EDA1702D1E87C6E2875121D2E7BB88C2A746
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// SPDX-License-Identifier: AGPL-3.0-or-later
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// File-version: 1
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interface IOffline {
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// Verify signer and data
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// Check input assuming signature is valid against contract instance.
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function isOfflineValid(address _signer, bytes memory _data) external view returns(bool);
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// Verify signature against data, and isOfflineValid() against data and signer (as validator)
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// Signature must be ERC191 version 0x00 with contract instance as validator.
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function verifyOfflineRequest(bytes memory _data, bytes memory _signature) external view returns(bool);
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// Change state if signature and signer is valid.
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// Call verifyOfflineRequest and:
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// - revert if it returns false.
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// - return 0 if state is changed according to the request.
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// - return any other valid to indicate an application specific error.
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function executeOfflineRequest(bytes memory _data, bytes memory _signature) external returns(uint256);
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}
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