32 lines
1.0 KiB
Solidity
32 lines
1.0 KiB
Solidity
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// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.20;
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contract DataStorage {
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struct Data {
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string hashedData;
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string salt;
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}
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mapping(uint256 => Data) private data;
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event DataStored(uint256 indexed id, string hashedData, string salt);
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event DataDeleted(uint256 indexed id);
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function storeData(uint256 id, string memory hashedData, string memory salt) public {
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require(bytes(data[id].hashedData).length == 0, "Data already exists for this ID");
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data[id] = Data(hashedData, salt);
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emit DataStored(id, hashedData, salt);
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}
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function getData(uint256 id) public view returns (string memory hashedData, string memory salt) {
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Data storage item = data[id];
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require(bytes(item.hashedData).length != 0, "Data not found");
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return (item.hashedData, item.salt);
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}
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function deleteData(uint256 id) public {
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require(bytes(data[id].hashedData).length != 0, "Data not found");
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delete data[id];
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emit DataDeleted(id);
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}
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}
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