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在Solidity語言中,合約可以通過利用多個地址對數據進行多重簽名和驗證。具體步驟如下:
address[] public signers;
uint public threshold;
struct Signature {
bool signed;
mapping(address => bool) signatures;
}
mapping(bytes32 => Signature) public signatures;
function signData(bytes32 _data) public {
require(signers.contains(msg.sender), "Address is not authorized to sign");
require(!signatures[_data].signatures[msg.sender], "Address has already signed");
signatures[_data].signatures[msg.sender] = true;
signatures[_data].signedCount++;
}
function verifyData(bytes32 _data) public view returns(bool) {
require(signatures[_data].signedCount >= threshold, "Data has not been signed by enough addresses");
return true;
}
通過以上步驟,合約就可以支持鏈上數據的多重簽名和驗證。只有當足夠數量的地址對數據進行了簽名,數據才能夠通過驗證。
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