摘要:
A method and apparatus for cross validation of data using multiple subsystems are described. According to one embodiment of the invention, a computer comprises a first subsystem and a second subsystem; and a memory, the memory comprising a first memory region and a second memory region, the first memory region being associated with the first subsystem and a second memory region being associated with the second subsystem; upon start up of the computer, the first subsystem to validate the second memory region and the second subsystem to validate the first memory region.
摘要:
Hardware of a virtualized processor based system detecting a specified type of memory access to an identified region of memory and in response to the detecting generating an interrupt for a virtual machine monitor (VMM) of the virtualized processor based system.
摘要:
A measurement engine performs active platform observation. A program includes an integrity manifest to indicate an integrity check value for a section of the program's source code. The measurement engine computes a comparison value on the program's image in memory and determines if the comparison value matches the expected integrity check value. If the values do not match, the program's image is determined to be modified, and appropriate remedial action can be triggered. The integrity manifest can include a secure signature to verify the validity of the integrity manifest.
摘要:
In general, in one aspect, the disclosure describes a process that includes a cryptographic engine and first and second registers. The cryptographic engine is to encrypt data to be written to memory, to decrypt data read from memory, to generate read integrity check values (ICVs) and write ICVs for memory accesses. The cryptographic engine is also to create a cumulative read ICV and a cumulative write ICV by XORing the generated read ICV and the generated write ICV with a current read MAC and a current write ICV respectively and to validate data integrity by comparing the cumulative read ICV and the cumulative write ICV. The first and second registers are to store the cumulative read and write ICVs respectively at the processor. Other embodiments are described and claimed.
摘要:
In some embodiments, a processor-based system may include at least one processor, at least one memory coupled to the at least one processor, a network interface component, and a management controller. The management controller may be configured to receive information related to a subscription request for a virtual machine, generate configuration information for the network interface component based on the subscription request, and provide the configuration information to the network interface component. Other embodiments are disclosed and claimed.
摘要:
A method that includes initiating a network access request from an access requester on a platform that couples to a network, the network access request made to a policy decision point for the network. The method also includes establishing a secure communication channel over a communication link between the policy decision point and a policy enforcement point on the platform. Another secure communication channel is established over another communication link. The other communication link is between at least the policy enforcement point and a manageability engine resident on the platform. The manageability engine forwards posture information associated with the access requester via the other secure communication channel. The posture information is then forwarded to the policy decision point via the secure communication channel between the policy enforcement point and the policy decision point. The policy decision point indicates what access the access requester can obtain to the network based on a comparison of the posture information to one or more network administrative policies.
摘要:
Architectures and techniques that allow a firmware agent to operate as a tamper-resistant agent on a host platform that may be used as a trusted policy enforcement point (PEP) on the host platform to enforce policies even when the host operating system is compromised. The PEP may be used to open access control and/or remediation channels on the host platform. The firmware agent may also act as a local policy decision point (PDP) on the host platform in accordance with an authorized enterprise PDP entity by providing policies if a host trust agent is non-responsive and may function as a passive agent when the host trust agent is functional.
摘要:
A method and system for a platform-based trust verifying service for multi-party verification. In one embodiment, the method includes a client platform accessing an service provider over a network. Upon accessing the service provider, the client platform receives a request from the service provider for platform measurement and verification. The client platform collects platform information and performs measurement and verification, including performing an integrity manifest comparison. If the integrity manifest comparison indicates a good client platform posture, then the client platform signs the client platform posture and sends an approval notification to the service provider indicating that the client platform has not been compromised. The client platform may then receive the service of the service provider. If the integrity manifest comparison indicates that the client platform posture is not good, then the client platform will send a failure notification to the service provider indicating that the client platform has been compromised.
摘要:
A method and device are disclosed. In one embodiment the method includes determining that a packet attempting to be sent from a first computer system has at least a portion of a human communication message that may contain spam. The method then increments a spam counter when the difference in time between a first time value in a time stamp within the packet and a second time value of a most recent activity from a human input device coupled to the first computer system is greater than a threshold difference in time value. The method also disallows the packet to be sent to a remote location if the spam counter exceeds a spam outbound threshold value.
摘要:
Hardware correlation of software performance statistics. Software may gather data relating to performance of a hardware resource. A hardware component of the system of the hardware resource may obtain data relating to the performance of the hardware resource from a hardware component and the gathered software data, and correlate the software and hardware data. A level of correlation may be determined, and remedial action may be taken based on the correlation of the software and hardware data.