How to use the new repo.magento.com

Magento comes with a sample file in your root as auth.json.sample you need to copy it to auth.json

It contains 2 key sets: 1 for Github and 1 for the Magento Repo

Enter the following data to your auth.json file to login. Please use the Public Key and the Private Key

{
    "http-basic": {
        "repo.magento.com": {
            "username":"<your public key>",
            "password":"<your private key>"
        }
    }
}

nb. the auth file can also be found in your user root directory and hence be used elsewhere ~/.composer/auth.json

Previous example is correct. In addition... it's also possible by composer's config command.

composer.phar global config http-basic.repo.magento.com <public_key> <private_key>

Login in magento using your credentials. Then follow the navigation

1.My Account

2.Marketplace

3.My Access Key

4.Magento2

Public Key: xxxxx

Private Key:xxxxx

Public Key used as user name and Private Key used as password.