Data communication using media files

摘要

A web browser may implement a single origin policy that makes an exception for media files such as markup language image files. In cases where the delivery of data to a browser may be blocked by a single origin policy, such as where the data originates from a domain other than the domain that originates the initially presented content, the data may be encoded in one or more media files, such as images, to circumvent the single origin policy. The data may be encoded using height and width dimensions, pixel colors, transparencies, or other characteristics of the media file(s). The media file(s) may be sent to the browser and decoded to access the data.

主权项

1. A system comprising:
at least one computing device configured to implement one or more services, the one or more services configured to:
access a request for data to be presented in a browser module, the request generated during presentation of content that originates from a first domain, the request indicating that the data originates from a second domain, the data being of a content type, the browser module configured to implement a policy that includes:
accepting the content type from the first domain;rejecting the content type from the second domain; andaccepting at least one image type from the second domain;encode the data in one or more images of the at least one image type; andsend the one or more images to the browser module in response to the request, to cause the one or more images to be presented in the browser module in circumvention of the policy.