International Business Machines Corporation

Thomas Alexander Bellwood

Matthew Francis Rutkowski

Robert Bryant Chumbley

Jeffrey Bruce Lotspiech

Travis M Grigsby

Michael A Paolini

Gabriel Aaron Cohen

Robert Glenn Deen

Jacob Daniel Eisinger

Christian Lita

Alexander Tarpinian

Anh Quy Lu

Julio Eloy Ruano

Merle Douglas Sterling

Donald E Leake, Jr

Michael John Walker

Matt Francis Rutkowski

James M Gasiewski

Richard Barnett Allen

Rabindranath Dutta

Hongxia Jin

Robert Carl Barrett

Sigfredo Ismael Nin

Leugim A Bustelo

Ronald W Bassett

Travis M Grisby

Provided are techniques to enable, using broadcast encryption, a device to locate a service offered by a server with the knowledge that the service offered by the server is a trusted service. A signed enhanced Management Key Block (eMKB) includes a trusted service locator (TSL) that includes one or more records, or 'trusted service data records' (TSDRs), each identifying a particular service and a corresponding location of the service is generated and transmitted over a network. Devices authorized to access a particular service parse the eMKB for the end point of the service, connect to the appropriate server and transmit a request.

Identifying and locating authenticated services using broadcast encryption

Provided are techniques for the distribution and control of digital content such that Quality of Experience (QoE) is maintained. Content is protected from when the content is encrypted to when it is used. To ensure the QoE of particular content, a content owner embeds a list of required or preferred components that must be employed to render the content. The content owner's list of required or preferred components specifies specific components 'trusted' to correctly process the content. The specified chain of preferred components is compared to possible devices in the system that processes the content. If there are multiple acceptable devices for a specific link, a preference system is employed to determine the device that executed the particular part of the chain. The preference system is based upon a number of factors, such as, but not limited to, performance characteristics, user preferences, expected stability, power requirements and system preferences.

Content protection continuity through authorized chains of components

Tenants in a multi-tenant shared deployment are provided their own distinct key spaces over which they control a key management system. In this manner, virtual key management domains are created on a per-tenant (per-customer) basis so that, whenever a particular customer's data is co-tenanted, stored, transmitted or virtualized in the IT infrastructure of the provider's datacenter(s), it is secured using key management materials specific to that customer. This assures that the entirety of a tenant's data remains secure by cryptographically isolating it from other tenants' applications. The virtual key management domains are established using a broadcast encryption (BE) protocol and, in particular, a multiple management key variant scheme of that protocol. The broadcast encryption-based virtual key management system (VKMS) and protocol achieves per-tenant (as well as per-application) secured isolation of data and can be used across any combination of resources in or across all levels of a co-tenanted IT infrastructure.

Virtual key management and isolation of data deployments in multi-tenant environments

Provided are techniques for the creation and storage of an archive for binding IDs corresponding to a cluster of devices that render content protected by a broadcast encryption scheme. When two or more clusters are merged, a binding ID corresponding to one of the clusters is selected and a new management key is generated. Binding IDs associated with the clusters other than the cluster associated with the selected binding ID are encrypted using the new management key and stored on a cluster-authorized device in a binding ID archive. Content stored in conformity with an outdated binding ID is retrieved by decrypting the binding ID archive with the management key, recalculating an old management key and decrypting the stored content.

Device archiving of past cluster binding information on a broadcast encryption-based network

Provided is techniques for the distribution and control of digital content such that Quality of Experience (QoE) is maintained. Content is protected from when the content is encrypted to when it is used. To ensure the QoE of particular content, a content owner embeds a list of required or preferred components that must be employed to render the content. The content owner's list of required or preferred components specifies specific components 'trusted' to correctly process the content. The specified chain of preferred components is compared to possible devices in the system that processes the content. If there are multiple acceptable devices for a specific link, a preference system is employed to determine the device that executed the particular part of the chain. The preference system is based upon a number of factors, such as, but not limited to, performance characteristics, user preferences, expected stability, power requirements and system preferences.

A method, computer program product, and data processing system for secure automated dispensing of prescription medications are disclosed. A preferred embodiment of the present invention utilizes broadcast encryption to encrypt a prescription for storage on a machine-readable medium that is pre-written with a key management block (KMB). The KMB encodes a session key needed to read from or write to the medium. Each prescription-writing device and medication dispensing device is assigned a unique set of device keys, which are used to recover the session key from the medium. Only authorized devices are able to recover the session key from a medium's KMB. Thus, only authorized devices may read or validly write prescriptions from/to the machine-readable medium. Hence, only authorized providers can write fillable prescriptions and only authorized dispensers can dispense medications to fill those prescriptions.

Cryptographic prescription system

Provided are techniques to enable a device that provides a service to authorize a second device for receiving the service and the delivery of the service to the second device and other devices within a trusted network. A signed Management Key Block (MKB) is generated and transmitted over a network. Devices authorized to access a particular service parse the MKB and transmit a request. A server associated with the service determines whether or not the device is authorized to access the service based upon data included in the request. The first device may issue a challenge to the second device for authentication purposes. If service is approved, service is initiated, either from the first device or another authorized device. Devices may be organized into classes such that devices of a specific class are authorized to access the service.

Authentication and authorization of a device by a service using broadcast encryption

A certification is received from a user stating that captured content does not comprise a particular restricted element and a request from the user for an adjustment of a digital rights management rule identified for the captured content based on the captured content comprising the particular restricted element. At least one term of the digital rights management rule is adjusted to reflect that the captured content does not comprise the particular restricted element. The usage of the captured content by the user is monitored to determine whether the usage matches the certification statement.

Digital rights management of captured content based on capture associated locations

Techniques for secure automated dispensing of prescription medications utilize broadcast encryption to encrypt a prescription for storage on a machine-readable medium that is pre-written with a key management block (KMB). The KMB encodes a session key needed to read from or write to the medium. Each prescription-writing device and medication dispensing device is assigned a unique set of device keys, which are used to recover the session key from the medium. Only authorized devices are able to recover the session key from a medium's KMB. Thus, only authorized devices may read or validly write prescriptions from/to the machine-readable medium. In this manner, only authorized providers can write fillable prescriptions and only authorized dispensers can dispense medications to fill those prescriptions.

Handling medical prescriptions in a secure fashion

Provided are techniques for providing a home or business security system that relies upon data encryption for both communication and the storage of content. The disclosed technology incorporates all the devices necessary for a comprehensive security system, including, but not limited to, controllers, monitors, alarms and communication media. The system may include an unlimited number of devices and, further, individual devices may be added and removed as needed. Users may define and change the boundaries of a security system or, in other words, decide what devices to include or not include in such a system. A defined boundary does not need to be confined to a single location. In one embodiment, the claimed subject matter incorporates xCP based broadcast encryption technology.

Broadcast encryption based security system

Embodiments of the invention relate to obtaining forensic information for an anonymous attack of digital content without variations in a broadcast encryption system. In one embodiment a media device, being configured to record digital content on recordable media, receives digital content, a unified media key block, and a recording key table. The device calculates a set of recording keys from the recording key table using a media key variant from the unified media key block. The device then generates a title key and encrypts by the digital content in the generated title key. The device then encrypts the generated title key in each one of the calculated recording keys, adds a header including the encrypted titles keys to the encrypted digital content, and stores the encrypted digital content with the header on recordable media.

Recording keys in a broadcast-encryption-based system

A first message comprising a received indication of a management key block (MKB) and a received indication of an authorization table (AT) is received at a first network device from a second network device. The received indications of the MKB and AT are validated by comparing them to generated indications of the MKB and AT, respectively. A response is generated based on the validation of the received indications and transmitted from the first network device to the second network device. The generated indications and response are stored. A second message comprising a second received indication of the MKB and a second received indication of the AT is received at the first network device from the second network device. The first network device communicates with the second network device in accordance with the stored response on determining that the second received indications match corresponding stored indications.

Processing performance of repeated device compliance update messages

Provided is a method for rendering media content wherein a request to render a first media content stored in a first partition is received, wherein the first partition stores the first and a second media content; the media content is correlated to a first management key block (MKB), binding ID (IDb) and authorization table (AT); the first MKB, IDb and AT are compared to a current MKB, IDb and AT; and if any of the first MKB, IDb or AT do not correspond to the current MKB, IDb or AT, respectively, generating a second partition by rebinding the first media content with respect to the current MKB, IDb and AT to generate a title key; and associating the first media content, the current MKB, IDb, AT and title key with the second partition, wherein the second media content remains associated with the first MKB, IDb, AT and partition.

Efficient rebinding of partitioned content encrypted using broadcast encryption

Provided is a method for the distribution and control of digital content such that Quality of Experience (QoE) is maintained. Content is protected from when the content is encrypted to when it is used. To ensure the QoE of particular content, a content owner embeds a list of required or preferred components that must be employed to render the content. The content owner's list of required or preferred components specifies specific components 'trusted' to correctly process the content. The specified chain of preferred components is compared to possible devices in the system that processes the content. If there are multiple acceptable devices for a specific link, a preference system is employed to determine the device that executed the particular part of the chain. The preference system is based upon a number of factors, such as, but not limited to, performance characteristics, user preferences, expected stability, power requirements and system preferences.

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Austin, TX, United States of America

Thomas Alexander Bellwood