Secure user credential control

摘要

In some embodiments, a user has use a single universal text—or image-based secret for generating a service-provider specific identity credential, for example username plus password, for authentication is derived. A human (i.e., the user) must interpret an image to enter this universal text (or image) based secret. For example, an image based challenge is presented to the user, and a credential is obtained based on the user's response to the challenge.

主权项

1. A method for generating a recipient-specific credential based on a user's secret using a computing device of a user, the method comprising:
receiving an image-based challenge and associated mapping data from an external server; providing the image-based challenge for presentation to the user on an electronic display, the image-based challenge comprising a spatial arrangement of a set of perceptually obscured symbols; accepting a response entered by the user via an input device and determined by the user based on the user's secret and the challenge, the response being based on a sequence of locations in the spatial arrangement; determining an identifier of the recipient; accessing from a data storage a user-specific predetermined random number; applying a computer-implemented credential-generating procedure to combine the mapping data, the response from the user, the identifier for the recipient, and the user-specific predetermined random number to form the recipient-specific credential without exposing the user's secret, including combining the mapping data with the response from the user to determine a mapped response and preventing disclosure of the user's secret internally on the computing device of the user; and providing the recipient-specific credential for transmission to the recipient without providing information sufficient to determine the user's secret from the transmission.