Smart Contract Audit Report
LockYourCrypto is building a new platform where users can lock tokens or ETH for a specified period of time.
For this audit, we reviewed the Lock contract provided to us by the project team.
No findings were identified.
Date: February 14th, 2023.
- Any user can initiate a token lock by specifying a token address, a token amount, and an unlock time.
- The specified number of tokens is transferred from the caller to the contract. The user must grant the contract a sufficient allowance in order for the transaction to successfully occur.
- Any user can initiate an ETH lock by specifying an unlock time and providing an amount of ETH that will be sent to the contract.
- Any user that has initiated a lock can unlock their provided tokens or ETH by specifying the token address or the 0x000 address if the lock was with ETH.
- If the unlock time has passed, the number of unlocked tokens or ETH will be sent from the contract to the caller's wallet address.
- The contract includes support for fee-on-transfer tokens.
- The contract utilizes ReentrancyGuard to prevent reentrancy attacks in applicable functions.
- As the contract is implemented with Solidity v0.8.x, it is safe from any possible overflows/underflows.
|Arbitrary Jump/Storage Write||N/A||PASS|
|Centralization of Control||N/A||PASS|
|Delegate Call to Untrusted Contract||N/A||PASS|
|Dependence on Predictable Variables||N/A||PASS|
|Improper Authorization Scheme||N/A||PASS|
|Outdated Compiler Version||N/A||PASS|
|Overall Contract Safety||PASS|
($) = payable function # = non-constant function Int = Internal Ext = External Pub = Public + [Int] IERC20 - [Ext] totalSupply - [Ext] balanceOf - [Ext] transfer # - [Ext] allowance - [Ext] approve # - [Ext] transferFrom # + [Int] IERC20Metadata (IERC20) - [Ext] name - [Ext] symbol - [Ext] decimals + [Int] IERC20Permit - [Ext] permit # - [Ext] nonces - [Ext] DOMAIN_SEPARATOR + [Lib] Address - [Int] isContract - [Int] sendValue # - [Int] functionCall # - [Int] functionCall # - [Int] functionCallWithValue # - [Int] functionCallWithValue # - [Int] functionStaticCall - [Int] functionStaticCall - [Int] functionDelegateCall # - [Int] functionDelegateCall # - [Int] verifyCallResultFromTarget - [Int] verifyCallResult - [Prv] _revert + [Lib] SafeERC20 - [Int] safeTransfer # - [Int] safeTransferFrom # - [Int] safeApprove # - [Int] safeIncreaseAllowance # - [Int] safeDecreaseAllowance # - [Int] safePermit # - [Prv] _callOptionalReturn # + Context - [Int] _msgSender - [Int] _msgData + ReentrancyGuard - [Pub]
# - [Prv] _nonReentrantBefore # - [Prv] _nonReentrantAfter # - [Int] _reentrancyGuardEntered + Lock (Context, ReentrancyGuard) - [Pub] # - modifiers: ReentrancyGuard - [Ext] lockToken # - modifiers: nonReentrant - [Ext] lockEther ($) - modifiers: nonReentrant - [Ext] unlock # - modifiers: nonReentrant - [Pub] getLockedTokens - [Pub] getTimersForToken
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Our firm is well-reputed in the community and is trusted as a top smart contract auditing company for the review of solidity code, no matter how complex. Our team of experienced solidity smart contract auditors performs audits for tokens, NFTs, crowdsales, marketplaces, gambling games, financial protocols, and more!
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What is a SourceHat Audit?
Typically, a smart contract audit is a comprehensive review process designed to discover logical errors, security vulnerabilities, and optimization opportunities within code. A SourceHat Audit takes this a step further by verifying economic logic to ensure the stability of smart contracts and highlighting privileged functionality to create a report that is easy to understand for developers and community members alike.
How Do I Interpret the Findings?
Each of our Findings will be labeled with a Severity level. We always recommend the team resolve High, Medium, and Low severity findings prior to deploying the code to the mainnet. Here is a breakdown on what each Severity level means for the project:
- High severity indicates that the issue puts a large number of users' funds at risk and has a high probability of exploitation, or the smart contract contains serious logical issues which can prevent the code from operating as intended.
- Medium severity issues are those which place at least some users' funds at risk and has a medium to high probability of exploitation.
- Low severity issues have a relatively minor risk association; these issues have a low probability of occurring or may have a minimal impact.
- Informational issues pose no immediate risk, but inform the project team of opportunities for gas optimizations and following smart contract security best practices.