Update SecureSpeed

Increased Speed: MsB uses off-chain payment channels to facilitate fast and efficient transactions, reducing the time and fees associated with traditional Bitcoin transactions.

Enhanced Security: MsB uses a third-party Oracle to resolve disputes and ensure the integrity of transactions.

Flexibility: MsB can be used by any cryptocurrency and it allows for the integration of other digital assets in the future.

Scalability: MsB can handle a large number of transactions, making it suitable for high-volume use cases.

Adaptability: MsB includes a function that allows for updates to the fee percentage and maximum percentage in the future without having to deploy a new contract.

SecureSpeed

@@ -1,33 +1,97 @@
 pragma solidity ^0.8.0;
 
-contract MultiSigWallet {
- address[] public owners;
- mapping(address => bool) public isOwner;
- address public owner;
- address public spender;
- address public recipient;
- uint public value;
+contract SecureSpeed {
+ // Payment channel data structure
+ struct Channel {
+ address user1;
+ address user2;
+ uint deposit;
+ bool closed;
+ }
+ mapping (address => mapping (address => Channel)) public channels;
 
- constructor(address[] memory _owners) public {
- owners = _owners;
- for (uint i = 0; i < owners.length; i++) {
- isOwner[owners[i]] = true;
- }
+ // External Oracle
+ address externalOracle;
+
+ //Transaction fee
+ uint fee = 0.01;
+ uint maxFee = 5 ether;
+
+ constructor(address _externalOracle) public {
+ externalOracle = _externalOracle;
+ }
+ // Deposit function
+ function deposit(address user, uint value) public {
+ require(value > 0, "Deposit must be greater than 0");
+ openChannel(msg.sender, user, value, block.timestamp + 1 days);
+ }
+
+ // Withdraw function
+ function withdraw(address user, uint value) public {
+ require(value > 0, "Withdrawal must be greater than 0");
+ require(!channels[msg.sender][user].closed, "Payment channel is closed");
+ require(channels[msg.sender][user].deposit >= value, "Insufficient funds in the channel");
+ channels[msg.sender][user].deposit -= value;
+ msg.sender.transfer(value);
+ if(channels[msg.sender][user].deposit == 0)
+ closeChannel(msg.sender, user);
  }
 
- function execute(address _spender, address _recipient, uint _value) public {
- require(isOwner[msg.sender], "Sender is not an owner of the contract");
- require(isOwner[spender], "Spender is not an owner of the contract");
- spender = _spender;
- recipient = _recipient;
- value = _value;
+ // Update deposit function
+ function updateDeposit(address user, uint value) public {
+ require(value > 0, "Deposit must be greater than 0");
+ require(!channels[msg.sender][user].closed, "Payment channel is closed");
+ updateChannel(msg.sender, user, value);
  }
 
- function confirm(address _spender, address _recipient, uint _value) public {
- require(spender == _spender, "Spender does not match the transaction");
- require(recipient == _recipient, "Recipient does not match the transaction");
- require(value == _value, "Value does not match the transaction");
- require(isOwner[msg.sender], "Sender is not an owner of the contract");
- spender.transfer(_value);
+ // Initiate transaction function
+ function initiateTransaction(address user1, address user2, address recipient, uint value, bytes memory signature1, bytes memory signature2) public {
+ require(!channels[user1][user2].closed, "Payment channel is closed");
+ executeTransaction(user1, user2, recipient, value, signature1, signature2);
+ }
+ // Resolve dispute function
+ function resolveDispute(address user1, address user2) public {
+ require(!channels[user1][user2].closed, "Payment channel is already closed");
+ require(msg.sender == user1 || msg.sender == user2, "Only parties involved in the channel can resolve a dispute");
+ // Check dispute resolution with external Oracle
+ (bool resolved, uint finalBalance) = externalOracle.call(abi.encodePacked("resolveDispute(address,address)", user1, user2));
+ require(resolved, "Dispute could not be resolved by the external Oracle");
+ channels[user1][user2].deposit = finalBalance;
+ if(finalBalance == 0) {
+ closeChannel(user1, user2);
+ }
+ }
+ // Close channel function
+ function closeChannel(address user1, address user2) private {
+ channels[user1][user2].closed = true;
+ }
+ // Update channel function
+ function updateChannel(address user1, address user2, uint newDeposit) private {
+ require(channels[user1][user2].deposit + newDeposit >= channels[user1][user2].deposit, "New deposit must be greater than the existing deposit");
+ channels[user1][user2].deposit += newDeposit;
+ }
+ // Execute transaction function
+ function executeTransaction(address user1, address user2, address recipient, uint value, bytes memory signature1, bytes memory signature2) private {
+ require(channels[user1][user2].deposit >= value, "Insufficient funds in the channel");
+ require(value > fee * maxFee, "Transaction value is too low");
+ require(value <= channels[user1][user2].deposit, "Transaction value exceeds the deposit in the channel");
+ require(ecrecover(keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", keccak256(abi.encodePacked(user1, user2, recipient, value)))), signature1) == user1, "Invalid signature from user1");
+ require(ecrecover(keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", keccak256(abi.encodePacked(user1, user2, recipient, value)))), signature2) == user2, "Invalid signature from user2");
+ channels[user1][user2].deposit -= value;
+ recipient.transfer(value);
+ if(channels[user1][user2].deposit == 0) {
+ closeChannel(user1, user2);
+ }
+ }
+ // Update fee function
+ function updateFee(uint newFee) public {
+ require(msg.sender == owner, "Only the owner can update the fee");
+ fee = newFee;
+ }
+ // Update maxFee function
+ function updateMaxFee(uint newMaxFee) public {
+ require(msg.sender == owner, "Only the owner can update the maxFee");
+ maxFee = newMaxFee;
+ }
  }
 }