DApp_DID.md

1.Introduction to DID

• DID is the identity of Blockchain similar to ID card of the real world
• Elastos DID centrally control the wallets

2. Explanation of Configuring the DID logon

2.1. Download and install the appmanager plugin

Plugin source path：

https://github.com/elastos/Elastos.ORG.Wallet.Mobile/tree/ds/appmanager

Installation instructions:

ionic cordova plugin add D:\project\Elastos.ORG.Wallet.Mobile\appmanager

2.2. Add the following code snippet to the page for DID logon

declare let cordova: any;
cordova.plugins.appmanager.StartApp("wallet/www/index.html" +
"?type=did_login&message=this is did login message&backurl=game/www/index.html",
function (data) {},
function (error) {});

3. Explanation of Input parameters

cordova.plugins.appmanager.StartApp("wallet/www/index.html" +
"?type=did_login&message=this is did login message&backurl=game/www/index.html",
function (data) {},
function (error) {});

• “wallet/www/index.html”：Root path of target DApp, the current path of wallet is wallet/www/index.html
• type: logon type, did_login is the current DID value
• message: use for encrypted verification
• backurl: the returned root path of the DApp after otaining the DID value

4. Explanation of Returned Parameters

• didNum: the number of DID，32 bytes string

• sign: teh signed message

• didPubkey: user's public key

• Message: input parameter for signing

• The authorization will be checked by function Check_DID, just put the following line in index.html

  <script src="assets/checkDID.js"></script>
  

• the checkDID.js file is in the following url https://github.com/elastos/Elastos.ORG.Wallet.Mobile/tree/ds/build

5.Effect of Running in Trinity