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README.md
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# Voronoi
# Vornoi · [![GitHub license](https://img.shields.io/badge/license-GPL3%2FApache2-blue)](https://github.com/Qrucial/voronoi/blob/main/LICENSE)
Making "decentralized" blockchain projects actually decentralized. Currently implementing the solutions: for Polkadot and Ethereum.
### Assumption
Cryptocurrency project with decentralization as one of the core principle.
### Problem
The existence of (SPoF) single point of failures.
### SPoF examples
The smart contract can be controlled (withdraw or pause) by a single account
What if the single account is hacked? Smart contract emptied and stopped/destroyed.
DApp with legacy, centralized backend
What if the backend hacked? DApp replaced with malicious smart contract.
DApp cannot be run locally, just from a central website
What if the domain or the DNS is hacked? DApp replaced with malicious smart contract.
### Solutions:
On smart contract level: Sign Flow Critical actions with multiple parties before executing them.
DecentraLib.sol
Use of threshold wallets (problem with that is not transparent enough)
On DApp level: share the source code and run-able binary/script in multiple locations and sign them/make them verifiable
Use of vanillajs + polkadotjs/web3js
Push code to Gitea/Github/Gitlab
Always publish the address on multiple public sources so users can verify it before transaction (website, twitter, telegram)
### Teminology
| Term | Explanation |
| ------ | ------ |
| Single Point of Failure (SPoF) |A point in the system that in case of incident makes the whole or major part the system fail. |
| Organization Flow (OrgFlow) | The project being executed, including the steps on the paths that are being taken. |
| Critical Impact Function (CIF) | Functions that are critical in the flow of the project's execution (eg. a selfdestruct() call stopping the whole Project Flow). |
| Minor Impact Function (MIF) | Minor Impact Function (MIF) - Functions that cannot have a critical impact on the project. |
### Example Topology of a real decentralized smart contract
![Decentralized Organization](/images/DecentraLibExample.jpg)
### Contributing
Voronoi is an open project which welcomes contribution. Please send us a pull request in case you have a contribution.
### Licensing
Voronoi is Licensed under [Apache2](https://github.com/Qrucial/voronoi/blob/main/LICENSE)

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// SPDX-License-Identifier: Apache-2.0
// Example of Voronoi Solidity solution, by QRUCIAL OÜ
// Coder: Six
pragma solidity ^0.8.10;
// DRAFT In this example, 4 parties (threshold = 4) out of 6 need to agree to execute the critical_impact() function
// Requirement: no single account should be able to call any Major Impact function.
contract Voronoi_Example {
mapping (address => uint256) internal unlockers; // Address to threshold amount (single account can have multiple)
mapping (uint256 => uint256) internal function_locks; // Function required to be unlocked
uint256 private threshold; // Threshold for unlock
event major_impact_call(bool value); // Event when a Major Impact Function is called
event minor_impact_call(bool value); // Event when a Minor Impact Function is called
event function_unlock(uint256 value); // Unlock event, when a function gets unlocked, unit256 -> func ID
constructor() {
threshold = 4; // An unlock happens when this threshold is reached or passed
unlockers[msg.sender] = 1; // Add starter unlocker addresses, in this example 6
unlockers[0xAb8483F64d9C6d1EcF9b849Ae677dD3315835cb2] = 1;
unlockers[0xCA35b7d915458EF540aDe6068dFe2F44E8fa733c] = 1;
unlockers[0x4B20993Bc481177ec7E8f571ceCaE8A9e22C02db] = 1;
unlockers[0x78731D3Ca6b7E34aC0F824c42a7cC18A495cabaB] = 1;
unlockers[0x617F2E2fD72FD9D5503197092aC168c91465E7f2] = 1;
function_locks[0] = 0; // Locked function [0] - unlocker_role_add()
function_locks[1] = 0; // Locked function [1] - unlocker_role_remove()
function_locks[2] = 0; // Locked function [2] - critical_impact1()
function_locks[3] = 0; // Locked function [3] - critical_impact2()
}
function unlocker_role_add(address new_unlocker) external returns (bool){
emit major_impact_call(true);
require(unlockers[msg.sender] == 1);
require(function_locks[0] >= threshold);
unlockers[new_unlocker] = 1;
return true;
}
function unlocker_role_remove(address rem_unlocker) external returns (bool){
emit major_impact_call(true);
require(unlockers[msg.sender] == 1);
require(function_locks[1] >= threshold);
unlockers[rem_unlocker] = 0; // Alternative option to remove fully
return true;
}
function unlock_voter(uint256 func_id) external returns (bool){
require(unlockers[msg.sender] == 1);
unlockers[msg.sender] = 0; // This could be improved, as now everyone can only vote once
function_locks[func_id] = function_locks[func_id] + 1;
return true;
}
// Voronoi solidity is ready to use after this.
// You can add your ERC20/ERC115 or other code and use the Voronoi security functions
function critical_impact1() external returns (bool) {
emit major_impact_call(true);
require(function_locks[2] >= threshold);
function_locks[1] = 0; // Can be called only once and threshold is reset.
return true;
}
function critical_impact2() external returns (bool) {
emit major_impact_call(true);
require(function_locks[3] >= threshold);
function_locks[2] = 0; // Can be called only once and threshold is reset.
return true;
}
function minor_impact() external returns (bool) { // No unlock check, just execute
emit minor_impact_call(true);
return true;
}
}

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// SPDX-License-Identifier: Apache-2.0
// Draft, example of an extended Voronoi Solidity solution, by QRUCIAL OÜ
// The extension is a more fine-tuned control on the unlock controls: a more DAO-like version.
// Coder: Six
pragma solidity ^0.8.10;
// DRAFT In this example, 4 parties (threshold = 4) out of 6 need to agree to execute the critical_impact() function
// Requirement: no single account should be able to call any Major Impact function.
contract Voronoi_Example {
mapping (address => uint256) internal unlockers; // Address to threshold amount (single account can have multiple)
mapping (uint256 => uint256) internal function_locks; // Function required to be unlocked
uint256 private threshold; // Threshold for unlock
event major_impact_call(bool value); // Event when a Major Impact Function is called
event minor_impact_call(bool value); // Event when a Minor Impact Function is called
event function_unlock(uint256 value); // Unlock event, when a function gets unlocked, unit256 -> func ID
constructor() {
threshold = 4; // An unlock happens when this threshold is reached or passed -> Could me more complex and each function have different threshold
unlockers[msg.sender] = 22; // Add starter unlocker addresses, in this example 6
unlockers[0xAb8483F64d9C6d1EcF9b849Ae677dD3315835cb2] = 10;
unlockers[0xCA35b7d915458EF540aDe6068dFe2F44E8fa733c] = 25;
unlockers[0x4B20993Bc481177ec7E8f571ceCaE8A9e22C02db] = 4; // unlimited number of votes? possibility to "reshare" votes all at once?
//function_locks[0] = 0;
// We will use structs here probably.
// function id X current_vote_weight
// unlocker addr X unlocker vote_weight
// ++ unlocker addr X funcid X used_weight // this is go be given back after executing funcid // bit similar to "staking"
// but how to remove the used_weight if votes are enough --> revoke vote func(unlockeraddr, funcid, weight_to_remove)
}
function unlocker_role_add(address new_unlocker) external returns (bool){
emit major_impact_call(true);
require(unlockers[msg.sender] == 1);
require(function_locks[0] >= threshold);
unlockers[new_unlocker] = 1;
return true;
}
function unlocker_role_remove(address rem_unlocker) external returns (bool){
emit major_impact_call(true);
require(unlockers[msg.sender] == 1);
require(function_locks[1] >= threshold);
unlockers[rem_unlocker] = 0; // Alternative option to remove fully
return true;
}
function unlock_voter(uint256 func_id, uint256 vote_weight) external returns (bool){
require(unlockers[msg.sender] == 1);
unlockers[msg.sender] = 0;
function_locks[func_id] = function_locks[func_id] + 1;
return true;
}
// Voronoi solidity is ready to use after this.
// You can add your ERC20/ERC115 or other code and use the Voronoi security functions
function critical_impact1() external returns (bool) {
emit major_impact_call(true);
require(function_locks[2] >= threshold);
function_locks[1] = 0; // Can be called only once and threshold is reset.
return true;
}
function critical_impact2() external returns (bool) {
emit major_impact_call(true);
require(function_locks[3] >= threshold);
function_locks[2] = 0; // Can be called only once and threshold is reset.
return true;
}
function minor_impact() external returns (bool) { // No unlock check, just execute
emit minor_impact_call(true);
return true;
}
}