Dhid-SDK

W3C DID and VC SDK for dehub project. At the same time, the DID in this project is compatible with the Ethereum account system.

Features

• W3C DID and VC (included VP) creation and verification
• DID to DID safe message channel
• VC-based ZKP creation and verification

Installing 🚀

NodeJS

/home/name/some_project> npm i dhid

Getting started 🚗

creat did, vc and make zk proof

import { keys, Keyring, generateMnemonicFromSeed, VerifiableCredentialBuilder} from 'dhid';

// DID
const mnemonic = generateMnemonicFromSeed('any type of string');
const kering = new Keyring();
const did = keys.fromMnemonic(kering, mnemonic);

// VC
const vcBuilder = VerifiableCredentialBuilder.fromRawCredential(rawCredential,ctype)
    .setExpirationDate(null)
    .setIssuanceDate(Date.now());
const vc: VerifiableCredential<false> = await vcBuilder.build(attester,false);

// ZKP
const constraints: ProgramConstraints[] = [
    {
      fields: [4],
      operation: ["gte"],
      value: 18,
    },
  ];
const program = unstable_generateProgram(7, constraints);
const programHash = generateProgramHash(program);

const secretInput = toMidenInput(credential, [4]);
const zkpResult = executeZkProgram(program, "", secretInput);

Test example 🔬

Test structre is developed based on jest. This is some test examples you can run.

yarn test src/protocol/did/did/did.spec.ts
yarn test src/protocol/vc/credential/index.spec.ts
yarn test src/utility/mnemonic/mnemonic.spec.ts