DID

Step 1. Check if the address has a DID.

DidListResponse getResponse = request.getDidList(node,address);

Parameters：

Name	Type	Description	Required
node	string	edge node url	true
address	string	wallet address	True

Returns：

DidListResponse:

Name	Type	Description	Required
Array	string array	a list of DID(s)	true

Step 2. Choose DID or log in with an wallet address

Use the address for login when the interface array is empty; otherwise, use the first element of the array as the DID parameter.

PreloginResponse postResponse = request.prelogin(node, preloginRequest.toString());

Parameters:

Name	Type	Description	Required
did	string	DID string，DID or address	False
address	string	wallet address, DID or address	False
node	string	edge node url	True

Returns:

PreloginResponse:

Name	Type	Description	Required
did	string	DID (existed or newly created)	true
message	string	message to be signed	true
updated	string	update time	true

3. Sign the return value in step 2.

LoginResponse loginResponse = request.didlogin(node, loginRequest.toString());

Parameters:

LoginRequest:

Name	Type	Description	Required
type	string	login type（current value is m.login.did.identity）	true
updated	string	time returned by pre_login updated	true
identifier	IdentifierModel	login information	true
device_id	string	device id, not required for new device	false

IdentifierModel type：

Name	Type	Description
did	string	DID
token	string	sign the returned message from pre_login, and encode with base16. The signing method is to sign directly using a private key: You can directly call the web3Sign() in the DID class for signing.

Returns:

LoginResponse:

Name	Type	Description	Required
access_token	string	access token	true
user_id	string	user id	true
device_id	string	device id	true