NFC Verification

/// 1. register SDK
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?
    
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        
        VeChainNFCSDK.registerSDK(appid)
        VeChainNFCSDK.setDelegate(self)
        
        return true
    }
}

extension AppDelegate: VeChainNFCSDKDelegate {

    // local sign
    func sign(_ challengeId: String, signNotifier: SignNotifier) {
        let certString = "your cert string"
        let privateKey = "your cert private key"
    
        let signature = CertUtils.getSignature(certString, certKey: privateKey, challengeId: challengeId)
        signNotifier.onSignResult(signature: signature)
    }
}

/// 2. start verify in your view controllers
class ViewController: UIViewController {
    
    override func viewDidLoad() {
    
        super.viewDidLoad()
        
        VeChainNFCSDK.verifyTags { (result) in
            if result.code == VerifyResultCode.success.rawValue {
                /// verify success
            } else {
                /// verify fail
            }
        }
    }
}

/// Call this method when the application is launched
/// @param verifyId is got from VeChain Toolchain Portal/Developer Center.
public static func registerSDK(_ verifyId: String)

public static func setDelegate(_ delegate: VeChainNFCSDK.VeChainNFCSDKDelegate)

// Notice: you have two options to get the signature
// Option1: get the signature from remote server, please see: Appendix A: FAQ How to Sign ChallengeID
// Option2: get the signature from local, please see: Appendix A: FAQ How to Sign ChallengeID
func sign(_ challengeId: String, signNotifier: SignNotifier)

// This function will use iOS CoreNFC module to identify nfc tags and verify the tags.
// @param completion callback with verifyResult contains result code, vid, url(if tag contains a url), vidAccessToken
public static func verifyTags(_ completion: 
       @escaping VeChainNFCSDK.VeChainVerifyCompletionBlock)

// Use this function to verify the qrcode.
// @param qrcode the qrcode string.
// @param completion callback with verifyResult contains result code, vid, url(if containing a url)
public static func verifyQrcode(_ qrcode: String, completion: 
       @escaping VeChainNFCSDK.VeChainVerifyCompletionBlock)

// Get SDK Version
public static func getVersion() -> String