Crypto JWT

A simple JWT integration with NFTs (ERC721 standard)

Local Chain

1. Install Ganache

Local Chain Setup

1. npm install (inside ./Chain)
2. truffle compile --all (inside ./Chain)
3. truffle deploy (inside ./Chain)
4. mint to mint NFTs to any address
5. setBits to update an NFT's bits

let nftContract = await NFTContract.deployed()
await nftContract.mint('some address', some bit value)
await nftContract.setBits(nft id, new bits value)

App Settings Setup

1. Update ChainInfo data to match local chain or remote chain
2. Assign any private key

API

1. ~/challenge request a challenge to sign.

{
    "account":"0x4B4AABaf30921059e3baD5Ab10f8d19d88cccC60",
    "nftId": 0
}

{
    "message": "0x4B4AABaf30921059e3baD5Ab10f8d19d88cccC60 owns 0 with nonce 1367492758"
}

2. ~/login submits a signature to login. The response includes the bits of that nft representing whatever access it should have.

{
    "account":"0x4B4AABaf30921059e3baD5Ab10f8d19d88cccC60",
    "nftId": 0,
    "signature": "cf0f0099d24e12dd41213856562cac4928f6eaac4c98bce6b99e05ce7dfedb495cd243ca401dd899a7494c1443bb4a102ad92fbb8c310fbc0a06919126e921ed1c"
}

{
    "account": "0x4B4AABaf30921059e3baD5Ab10f8d19d88cccC60",
    "nftId": 0,
    "bits": 3,
    "token": "a jwt token"
}

3. ~/test a get request which includes Authorization header having the jwt token. The response is a blank 200 ok code but BE would have access to the account, nft and bits.

The account ownership of the NFT and the bits are compared against the chain.

A future enhancement would be to implement caching and a scraper that follows the contract on chain to clear cache when need be.

Useful Links

You can sign using My Ether Wallet

Version History

1. 2023-12-12: Initial release v1.0.0

Disclaimer

This implementation was made for educational / training purposes only.

License

License is MIT

MISC

Birbia is coming