US Patent 10423776 Systems and methods for password-based authentication

Systems and methods for password-based authentication are described. A password hardening method may include a step of receiving input provided by a user, wherein the user-provided input includes a password provided by the user for an application, and wherein at least a portion of the application is protected by a password-based authentication service. The method may also include a step of obtaining a hardened password for the user for the application, wherein the hardened password is based, at least in part, on the user-provided password, identification data associated with the application, and at least a portion of an entropy datastore associated with the user. The method may also include a step of providing the hardened password to the password-based authentication service, wherein the authentication service grants the user access to the password-protected portion of the application based, at least in part, on the provided hardened password.