Colu-Node

SDK in Node.Js for Colu.co

Install

$ npm install colu-node

Generate keys for your company:

If you create an instance of the colu module with only the company name, the privateSeed will generate randomly on your machine. Your privateSeed is what define your company.

Colu.init('my_company','testnet',function(err,colu){if(err){returnconsole.log('err: '+err)}// This is your private seed, keep it safe!!!console.log('Private seed: '+colu.getPrivateSeed())})

Create instance from existing keys:

When you want to use our module in your server you need to do the generation of keys only once. After that all you need to do is to create an instance of Colu with your key:

varColu=require('colu-node')varprivateSeed='c507290be50bca9b787af39019f80e2f9f27e4020ee0a4fe51595ee4424d6150'Colu.init('my_company','testnet',privateSeed,function(err,colu){if(err){returnconsole.log('err: '+err)}// This is your private seed, keep it safe!!!console.log('seed: '+colu.getPrivateSeed())})

The colu instance returned in the callback function goes through a discovering processes of your active keys using BIP32 and BIP32 schemes.

Register a user to 2FA:

Register by QR code:

You can register a user to the Colu 2FA service on your site by QR with 3 simple steps:

1. Create a registration message:

varusername='bob'varregistrationMessage=colu.createRegistrationMessage(username)

2. Create a registration QR code:

varqr=colu.createRegistrationQR(registrationMessage);

3. Show to the user the QR code in your site to scan with our mobile application, and prompt our server:

colu.registerUser(registrationMessage,function(err,data){if(err){console.error('error: '+err)}else{console.log('userId: '+data.userId)console.log('assetId: '+data.assetId)}})

The user need to scan the QR code with the Colu mobile application and approve the registration. After that you should get back the userId and the assetId. You need to save the assetId in order to verify this user in the future. You can also use the userId in order to send this register user other assets.

Register by phone number:

You can also register a user with his phone number:

Just replace the step 3 in the Register by QR code section to:

varphonenumber='+1234567890'colu.registerUserByPhonenumber(registrationMessage,phonenumber,function(err,data){if(err){console.error('error: '+err)}else{console.log('userId: '+data.userId)console.log('assetId: '+data.assetId)}})

Verify user:

To verify a user all you need to do is:

varusername='bobic'varassetId='od8U4iiVW6BEGPoSPXjmkJ1fREWF2bqVxn'colu.verifyUser(username,assetId,function(err,data){if(err){console.error('error: '+err)}else{console.log('data: '+JSON.stringify(data))}})

This will send a push to the user that holds the asset mobile application and prompt him to sign on your message, you will receive the user signature and verify it locally.