Cis Maxwell, LLC

Irdeto Canada Corporation

Other

Cloakware Corporation

Alexander James Main

Harold J Johnson

Stanley T Chow

Ron Vandergeest

Paul Litva

Yuan Xiang Gu

James Henry Allan Puderer

A technique is disclosed for remotely managing isolated domains on mobile devices. A request is received from the mobile device to instantiate a managed domain. A managed domain configuration is determined and comprises a security policy controlling access to content of the managed domain of the subscribing mobile device, a content specification identifying the content to be downloaded by the subscribing mobile device into the managed domain, and a content configuration identifying a configuration of the content on the subscribing mobile device. The managed domain configuration is sent to the subscribing mobile device to instantiate a secure, managed domain whose policy, content and content configuration is remotely controlled. The technique is useful for advertising and brand promotion on mobile devices as it simultaneously enables detailed control over the presentation of content by a curator while ensuring privacy and security protection of the other apps, accounts and data on the mobile device.

Managed domains for remote content and configuration control on mobile information devices

A computing device operating system providing a plurality of secure domains. A domain manager selectively creates a plurality of secure domains, and one of the secure domains is selected as a current domain. A domain policy service stores and enforces, for each secure domain, a policy comprising a rule set controlling access to files and applications associated with the domain. A package manager enforces, for each secure domain, installation of the applications associated with the domain. A domain message service provides communication between running processes associated with different ones of the secure domains. An activity manager selectively switches the current domain. Domain isolation is achieved while enabling a unified user interface providing concurrent access to the resources of multiple domains.

Operating system integrated domain management

Attacks by computer viruses, worm programs, and other hostile software ('malware'), have become very serious problems for computer systems connected to large communication networks such as the Internet. One potential defense against such attacks is to employ diversity&#x2014;that is, making each copy of the attacked software different. However, existing diversity techniques do not offer sufficient levels of protection. The invention provides an effective diversity solution by applying tamper resistant software (TRS) encoding techniques, to the communications that take place between software components, with corresponding changes to the code handling those communications. These communications may include, for example, data passed between software routines via parameters or mutually accessible variables, light-weight messages, signals and semaphores passed between threads, and messages passed between software processes. Effective TRS encoding techniques include data-flow encoding and mass-data encoding techniques.

Secure method and system for computer protection

Attacks by computer viruses, worm programs, and other hostile software ('malware'), have become very serious problems for computer systems connected to large communication networks such as the Internet. One potential defence against such attacks is to employ diversity&#x2014;that is, making each copy of the attacked software different. However, existing diversity techniques do not offer sufficient levels of protection. The invention provides an effective diversity solution by applying tamper resistant software (TRS) encoding techniques, to the communications that take place between software components, with corresponding changes to the code handling those communications. These communications may include, for example, data passed between software routines via parameters or mutually accessible variables, light-weight messages, signals and semaphores passed between threads, and messages passed between software processes. Effective TRS encoding techniques include data-flow encoding and mass-data encoding techniques.

Systems and methods which may be implemented as software to control access to content streams transmitted from a service provider's server. A software solution forces each set top box (STB) to periodically uplink to the server and to receive authentication from that server. To prevent spoofing, the server periodically loads to each STB at least one unique key that is required to access the content stream or that is required for authentication. The key or keys may be periodically revoked and/or replaced by the server. The frequency of the revocation and/or replacement of the key is ideally not fixed. Also, the server may periodically upgrade the decoding and/or authentication software on the STBs via the uplink.

Software conditional access system

The present invention relates generally to computer software, and more specifically, to a system and method of foiling buffer-overflow and alien-code attacks. The invention protects computers from such attacks by encoding data placed in storage, and varying the encodings used in different storage areas. When the data is needed by a software application, the data is simply decoded in a complementary manner. This prevents storage areas written according to one usage from being used effectively for some other purpose. The method of the invention can be done in a number of ways. For example, a 'protector' engine can be placed between a software application and memory, or the function calls in the software application itself, could be amended to include encoding and decoding. Other embodiments and alternatives are also described.

Growing community of inventors

Ottawa, Canada

Alexander James Main