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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. -Copyright [yyyy] [name of copyright owner] + Copyright 2021 QRUCIAL OÜ -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at -http://www.apache.org/licenses/LICENSE-2.0 + http://www.apache.org/licenses/LICENSE-2.0 -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/README.md b/README.md index 9fd4042..d07e05f 100644 --- a/README.md +++ b/README.md @@ -1,2 +1,44 @@ -# 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) diff --git a/images/DecentraLibExample.jpg b/images/DecentraLibExample.jpg new file mode 100644 index 0000000..6ef2cb1 Binary files /dev/null and b/images/DecentraLibExample.jpg differ diff --git a/papers/Fast_Multiparty_Threshol_ECDSA_with_Fast_Trustless_Setup_2019.pdf b/papers/Fast_Multiparty_Threshol_ECDSA_with_Fast_Trustless_Setup_2019.pdf new file mode 100644 index 0000000..2f16bb9 Binary files /dev/null and b/papers/Fast_Multiparty_Threshol_ECDSA_with_Fast_Trustless_Setup_2019.pdf differ diff --git a/papers/Proactive_Threshold_Wallets_with_Offline_Devices_2019-1328.pdf b/papers/Proactive_Threshold_Wallets_with_Offline_Devices_2019-1328.pdf new file mode 100644 index 0000000..6ea5457 Binary files /dev/null and b/papers/Proactive_Threshold_Wallets_with_Offline_Devices_2019-1328.pdf differ diff --git a/papers/Securing_Bitcoin_wallets_via_dsa-ecdsa-threshold_signatures.pdf b/papers/Securing_Bitcoin_wallets_via_dsa-ecdsa-threshold_signatures.pdf new file mode 100644 index 0000000..ebfcbf7 Binary files /dev/null and b/papers/Securing_Bitcoin_wallets_via_dsa-ecdsa-threshold_signatures.pdf differ diff --git a/smart_contracts/voronoi_solidity_example.sol b/smart_contracts/voronoi_solidity_example.sol new file mode 100644 index 0000000..1063521 --- /dev/null +++ b/smart_contracts/voronoi_solidity_example.sol @@ -0,0 +1,77 @@ +// 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; + } +} diff --git a/smart_contracts/voronoi_solidity_extended_example.sol b/smart_contracts/voronoi_solidity_extended_example.sol new file mode 100644 index 0000000..7d71e8e --- /dev/null +++ b/smart_contracts/voronoi_solidity_extended_example.sol @@ -0,0 +1,78 @@ +// 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; + } +}