Abstract: The techniques described herein use an edge device to manage the security for a data stream being ingested by a tenant and a cloud platform. The creation of the data stream for ingestion occurs in an environment that is trusted by a tenant (e.g., an on-premises enterprise network). The cloud platform that is part of the data stream ingestion process is outside this trusted environment, and thus, the tenant loses an element of security when ingesting data streams for cloud storage and/or cloud processing. Accordingly, the edge device is configured on a trust boundary so that the data stream ingestion process associated with a cloud platform is secured, or trusted by the tenant. The edge device is configured to encrypt the data stream using a data encryption key and/or manage the protection of the data encryption key.

Abstract: An access control system is disclosed for controlling access to a resource. A request is received by a location attribute policy (LAP) server to access an encrypted resource. The LAP server accesses a resource policy that identifies requirements for granting access to the encrypted resource, such as a list of attributes of the requestor that are required and a dynamic attribute requirement of the requestor. The LAP server receives a cryptographic proof from the computing device that the requestor possesses the attributes and validates the proof based at least on information obtained from a trusted ledger. Once the proof is validated, the LAP server provides a shared secret associated with the dynamic attribute requirement to a decryption algorithm. The decryption algorithm uses the dynamic attribute shared secret in combination with one or more attribute shared secrets from the requestor to generate a decryption key for the encrypted resource.

Abstract: Methods and devices for presenting an image in an atomic manner across a plurality of displays of a computer device from a single buffer shared by the plurality of displays may include synchronizing the plurality of displays of the computer device. The methods and devices may initiate an atomic present request to present an image frame on the plurality of displays including a first display and a second display, the atomic present request may identify at least a first display texture and a second display texture from a plurality of display textures stored in the single buffer corresponding to the image frame and that the first display texture corresponds to a first display and the second display texture corresponds to a second display. The devices and methods may transmit a bundled set of first image frame data and second image frame data from the single buffer to a display driver.

Abstract: Described are examples for adjusting display level properties across multiple displays. One or more ranges of display brightness capability values that are supported by a given display device can be received for multiple display devices. For each of the multiple display devices, at least a portion of display brightness capability values in the one or more ranges of display brightness capability values can be mapped to selectable brightness levels available in an operating system. One of the selectable brightness levels can be determined as selected via the operating system. For each of the multiple display devices, a corresponding display brightness capability value mapped to the one of the selectable brightness levels can be determined and indicated to each of the multiple display devices, such that the multiple display devices may set different display brightness capability value brightness, but the brightness may be perceptually similar across the display devices.

Abstract: Methods and devices for presenting an image in an atomic manner across a plurality of displays of a computer device from a single buffer shared by the plurality of displays may include synchronizing the plurality of displays of the computer device. The methods and devices may initiate an atomic present request to present an image frame on the plurality of displays including a first display and a second display, the atomic present request may identify at least a first display texture and a second display texture from a plurality of display textures stored in the single buffer corresponding to the image frame and that the first display texture corresponds to a first display and the second display texture corresponds to a second display. The devices and methods may transmit a bundled set of first image frame data and second image frame data from the single buffer to a display driver.

Abstract: Described are examples for adjusting display level properties across multiple displays. One or more ranges of display brightness capability values that are supported by a given display device can be received for multiple display devices. For each of the multiple display devices, at least a portion of display brightness capability values in the one or more ranges of display brightness capability values can be mapped to selectable brightness levels available in an operating system. One of the selectable brightness levels can be determined as selected via the operating system. For each of the multiple display devices, a corresponding display brightness capability value mapped to the one of the selectable brightness levels can be determined and indicated to each of the multiple display devices, such that the multiple display devices may set different display brightness capability value brightness, but the brightness may be perceptually similar across the display devices.