example-dapp

KRNL example dapp

A simple smart contract to demonstrate a possible way to integrate dapps with the krnl ecosystem using krnl.js

Instructions

For the scripts a dapp must be registered at the token-authority and the returned accessToken and tokenAuthorityPublicKey must be configured in the .env file.

Example env

ACCESS_TOKEN=0x9292739e19e354fb7f7ae866673ccc18c44e8aab3fcd22817409624f83324af14ca767fb835eadb19ce95c0d693d74fa53647a87807a728041f92c77d55354bd00
TA_PK=0x7A34cB7BdE55D3F0A971f788222473cb1196Ee60
KRNL_NODE=http://localhost:8080

Run the scripts

npm install
npx hardhat compile
npx hardhat run script/<script-name>

Scripts

simulateVAlidation.ts sets up the krnl-node JsonRpcProvider with the accessToken and deploys the contract with the token authority publickey. Then initiates a txRequest which will return the signatureToken and the hash. Finally it calls isValidSignature to validate the signatureToken in the deployed ERC-1271 compliant contract.

simulateTx.ts extends the functionality of the simulateVAlidation.ts script with an actual tx sending where the input-data contains a mock FaaS message, which then further proccessed in the krnl-node.

simulateTxInvalidSignature.ts similar to simulateTx.ts but for the actual contract call it uses an invalid signature, which will result in a revert.

simulateInvalidAccessToken.ts initiates a krnl_TransactionRequest but with an invalid access token which will be rejected by the krnl-node.