The FIDO Alliance https://www.engadget.com/2014/12/09/fido-alliance-publishes-specs/ and W3C have launched https://www.w3.org/TR/2018/CR-webauthn-20180320/ a Web Authentication standard that makes it easier to offer truly unique encryption credentials for each site.
https://www.engadget.com/2018/04/10/fido-w3c-web-authentication/