3id-did-provider v1.1.1

ThreeIdProvider

ThreeIdProvider is a JavaScript SDK that allows developers to create and manage 3ID identities on the Ceramic network. It exposes a DID Provider interface which exposes JOSE signing and decryption though a JOSN-RPC interface. ThreeIdProvider can be used in combination with js-did.

Getting Started

Installation

Install 3id-did-provider in your npm project:

$ npm install 3id-did-provider

Usage

Import ThreeIdProvider into your project

Import the 3id-did-provider module

const ThreeIdProvider = require('3id-did-provider')

Import using the dist build in your html code

<script type="text/javascript" src="../dist/threeid-provider.js"></script>

Understanding the getPermission function

the getPermission configuration parameter is always required when creating an instance of ThreeIdProvider. It is used to give an application permission to decrypt and sign data. What this function should do is to present a dialog to the user in the wallet UI, asking for permission to access the given paths.

The function is called with one parameter which is the request object. It looks like this:

{
  type: 'authenticate',
  origin: 'https://my.app.origin',
  payload: {
    paths: ['/path/1', '/path/2']
  }
}

In the above example the app with origin https://my.app.origin is requesting access to /path/1 and /path/2. If the user consents to this the function should just return the paths array, otherwise an empty array. Note that an array containing only some of the requested paths may also be returned.

Instantiate ThreeIdProvider with an authentication method

To create an instance with an auth method you can pass two params to the create function as shown below. If the auth method doesn't have a 3ID associated with it yet a new 3ID will be created.

const authSecret = new Uint8Array([ ... ]) // 32 bytes of entropy used to authenticate
const authId = 'myAuthenticationMethod' // a name of the auth method
const ceramic = ... // An instance of Ceramic (either @ceramicnetwork/core, or @ceramicnetwork/http-client)

const threeId = await ThreeIdProvider.create({ getPermission, authSecret, authId, ceramic })

Instantiate ThreeIdProvider with a seed

To create a wallet with a seed you can simply pass it as an option to the constructor. This will create an instance of the ThreeIdProvider that derives all it's keys from this seed. Be careful, if this seed is lost the DID and all of it's data will be lost as well.

const seed = new Uint8Array([ ... ]) // 32 bytes of entropy used as the seed
const ceramic = ... // An instance of Ceramic (either @ceramicnetwork/core, or @ceramicnetwork/http-client)

const threeId = await ThreeIdProvider.create({ getPermission, seed, ceramic })

Using the ThreeIdProvider with js-did

An instance of the DID provider from ThreeIdProvider can be passed directly to js-did.

const provider = threeId.getDidProvider()
const did = new DID({ provider })

Maintainers

@oed

API Documentation

Keychain

Kind: global class

• Keychain
  • new Keychain()
  • .list() ⇒ Array.<string>
  • .add(authId, authSecret)
  • .remove(authId)
  • .status() ⇒ KeychainStatus
  • .commit()

new Keychain()

The Keychain enables adding and removing of authentication methods.

keychain.list() ⇒ Array.<string>

List all current authentication methods.

Kind: instance method of Keychain
Returns: Array.<string> - A list of authIds.

keychain.add(authId, authSecret)

Add a new authentication method (adds to staging).

Kind: instance method of Keychain

keychain.remove(authId)

Remove an authentication method (adds to staging).

Kind: instance method of Keychain

keychain.status() ⇒ KeychainStatus

Show the staging status of the keychain. Since removing auth methods will rotate the keys of the 3ID its a good idea to remove multiple auth methods at once if desired. Therefore we introduce a commit pattern to do multiple updates to the keychain at once.

Kind: instance method of Keychain
Returns: KeychainStatus - Object that states the staging status of the keychain

keychain.commit()

Commit the staged changes to the keychain.

Kind: instance method of Keychain

Permissions

Kind: global class

• Permissions
  • new Permissions()
  • .request(origin, paths) ⇒ Array.<String>
  • .has(origin, paths) ⇒ Boolean
  • .get(origin) ⇒ Array.<String>
  • .set(origin, paths)

new Permissions()

The Permissions class exposes methods to read and update the given permissions

permissions.request(origin, paths) ⇒ Array.<String>

Request permission for given paths for a given origin.

Kind: instance method of Permissions
Returns: Array.<String> - The paths that where granted permission for

permissions.has(origin, paths) ⇒ Boolean

Determine if permission has been given for paths for a given origin.

Kind: instance method of Permissions
Returns: Boolean - True if permission has previously been given

permissions.get(origin) ⇒ Array.<String>

Get the paths which the given origin has permission for.

Kind: instance method of Permissions
Returns: Array.<String> - The permissioned paths

permissions.set(origin, paths)

Set the paths which the given origin should have permission for.

Kind: instance method of Permissions

ThreeIdProvider

Kind: global class

• ThreeIdProvider
  • new ThreeIdProvider()
  • instance
    • .keychain
    • .permissions
    • .id
    • .getDidProvider() ⇒ DidProvider
    • .resetIDX()
  • static
    • .create(config) ⇒ ThreeIdProvider

new ThreeIdProvider()

Use ThreeIdProvider.create() to create an ThreeIdProvider instance

threeIdProvider.keychain

Kind: instance property of ThreeIdProvider
Properties

threeIdProvider.permissions

Kind: instance property of ThreeIdProvider
Properties

threeIdProvider.id

Kind: instance property of ThreeIdProvider
Properties

threeIdProvider.getDidProvider() ⇒ DidProvider

Get the DIDProvider

Kind: instance method of ThreeIdProvider
Returns: DidProvider - The DIDProvider for this ThreeIdProvider instance

threeIdProvider.resetIDX()

Reset the IDX doc structure to a default (mostly empty) state.

Kind: instance method of ThreeIdProvider

ThreeIdProvider.create(config) ⇒ ThreeIdProvider

Creates an instance of ThreeIdProvider

Kind: static method of ThreeIdProvider
Returns: ThreeIdProvider - An ThreeIdProvider instance