In most use cases an application will persist the user's credentials including the private key and sign transactions for the user. However some business scenarios may require higher level of privacy. What if the user wants to keep their private key secret and does not trust another system or backend server to securely store it and use it?
The fabric-common package comes with the ability to sign a transaction outside of the application. The application may choose to include the signature when calling the send method of the service instead of the identity context that would be used to create the signature. [1]
import { sendProposal } from 'hyperledger-fabric-offline-transaction-signing';
const proposalResponse = await sendProposal({
client,
user,
privateKeyPEM,
channel,
chaincode,
fcn,
args,
});This repository is part of the BLOCKOTUS Organism.
Build complete decentralized applications with Blockotus Open and Decentralized Standard and Hyperledger Fabric.
The kit includes a Frontend (Svelte / React), a Backend (Nodejs / Express), a Network and Chaincode Contracts (Hyperledger Fabric) as specified by Blockotus Open and Decentralized Standard.
[1] https://hyperledger.github.io/fabric-sdk-node/release-2.2/tutorial-sign-transaction-offline.html