web3-express-middleware

RESPONSE HEADER WITH SIGNATURE

Simple fix is to include 2 headers in every REST response of an API.

MD5 hash of the response data A signature that signs the above hash If not private response, upload to IPFS and include IPFS hash MD5 : Web3Signature : <v,r,s> IPFS :

A MIDDLEWARE

Able to use the middleware in express. web3api.configure(env.privateKey) app.use(web3api)

// in routes res.send(data, { private : IS_PRIVATE_RESPONSE })

A SMART CONTRACT

A resolver contract, that takes the IPFS hash and returns the data, md5 and signature //web3api.sol

resolve(string ipfs_hash) public returns(uint request_id)

resolve_callback(string request_id, bytes data, string md5, bytes signature) external