solidity-signature-example

Signature verification example in solidity with changing hash every 2 minutes for more security.

About the smart contract

• The hash is generated by the smart contract using these:
  • Address of the deployed smart contract
  • Chain Id
  • Current nonce: Changes after every successful transaction
  • Hash timestamp: Timestamp which changes every 2 minutes
• This hash will be signed by the signer and the signature can be used in transactions.
• After a successful transaction the hash will be marked as executed and the nonce will be updated. This will prevent signature replay attacks.
• Apart from this the hash to be signed will keep changing every 2 mintues for more security.

Steps to setup

• Clone the repo

git clone https://github.com/codeTIT4N/solidity-signature-changing-hash

• Install node_modules

npm install

• Compile smart contract

npx hardhat compile

• Run the test cases

npx hardhat test