infra_did_comm_dart 0.7.2

Communication Protocol using Infra DID

infra-did-comm-dart

Feature provided by infra-did-comm-dart Library :

• Make DID-Connect-Request Message
• Make DID-Auth-Init Message
• Make DID-Auth Message
• Make DID-Connected Message
• Make DID-Auth-Failed Message
• Sign / Verify JWS
• Encrypt / Decrypt JWE
• Convert Key Ed25519 to X25519
• Make shared key using ECDH-ES
• Connect to Websocket Server
• Make Dynamic QR Code

Installation

• Using pub:

dart pub add infra_did_comm_dart # this not work now cause we are not published yet
dart pub add infra_did_comm_dart --git-url=https://github.com/InfraBlockchain/infra-did-comm-dart.git # you can add with git url

Examples

Get more examples in examples and test folder.

Holder & Verifier

• Holder

import "package:infra_did_comm_dart/infra_did_comm_dart.dart";

bool didAuthCallback(String peerDID) {
  print("DID Auth Callback");
  return true;
}

void didConnectedCallback(String peerDID) {
  print("DID Connected Callback");
}

void didAuthFailedCallback(String peerDID) {
  print("DID Auth Failed Callback");
}

main() async {
  initiatedByHolderScenario();
}

initiatedByHolderScenario() async {
  String mnemonic =
      "bamboo absorb chief dog box envelope leisure pink alone service spin more";
  String did = "did:infra:01:5EX1sTeRrA7nwpFmapyUhMhzJULJSs9uByxHTc6YTAxsc58z";
  InfraDIDCommAgent agent = InfraDIDCommAgent(
    url: "http://data-market.test.newnal.com:9000",
    did: did,
    mnemonic: mnemonic,
    role: "HOLDER",
  );

  agent.setDIDAuthCallback(didAuthCallback);
  agent.setDIDConnectedCallback(didConnectedCallback);
  agent.setDIDAuthFailedCallback(didAuthFailedCallback);

  agent.init();

  String? socketId = await agent.socketId;
  if (socketId != null) {
    String holderSocketId = socketId;
    final minimalCompactJson = {
      "from": "did:infra:01:5EX1sTeRrA7nwpFmapyUhMhzJULJSs9uByxHTc6YTAxsc58z",
      "body": {
        "i": {"sid": holderSocketId},
        "c": {"d": "pet-i.net", "a": "connect"},
      },
    };
    final didConnectRequestMessage =
        DIDConnectRequestMessage.fromJson(minimalCompactJson);

    String encoded = didConnectRequestMessage.encode(CompressionLevel.json);
    print("Holder make encoded request message: $encoded");
  } else {
    print("Socket ID is null");
  }
}

• Verifier

import "package:infra_did_comm_dart/infra_did_comm_dart.dart";

bool didAuthCallback(String peerDID) {
  print("DID Auth Callback");
  return true;
}

void didConnectedCallback(String peerDID) {
  print("DID Connected Callback");
}

void didAuthFailedCallback(String peerDID) {
  print("DID Auth Failed Callback");
}

main() async {
  String encoded = "" // Get from Holder
  initiatedByHolderScenario(encoded);
}

initiatedByHolderScenario(String encoded) async {
  String mnemonic =
      "bamboo absorb chief dog box envelope leisure pink alone service spin more";
  String did = "did:infra:01:5EX1sTeRrA7nwpFmapyUhMhzJULJSs9uByxHTc6YTAxsc58z";
  InfraDIDCommAgent agent = InfraDIDCommAgent(
    url: "http://data-market.test.newnal.com:9000",
    did: did,
    mnemonic: mnemonic,
    role: "VERIFIER",
  );

  agent.setDIDAuthCallback(didAuthCallback);
  agent.setDIDConnectedCallback(didConnectedCallback);
  agent.setDIDAuthFailedCallback(didAuthFailedCallback);

  agent.init();
  await agent.sendDIDAuthInitMessage(encoded);
  if(agent.isConnected){
    print("DID Connected");
  }
}