Invalid credentials for ‘https://repo.magento.com/archives/magento/composer/magento-composer-1.0.2.0

magento2使用composer安装程序需要验证公钥和私钥

如图所示

用户名和密码对应公钥和私钥

 Sign inhttps://marketplace.magento.com/customer/accessKeys/

如果没有账号就是创建一个