Microsoft Technology Licensing, LLC

Felix Schuster

Sylvan Wesley Clebsch

Marcus Peinado

Manuel Costa

Antony Ian Taylor Rowstron

Christos Gkantsidis

Cedric Fournet

Manuel Silverio Da Silva Costa

Alexander Shamis

Olga Ohrimenko

Istvan Haller

Daniel Gruss

Julian Lettner

In various examples there is a computing device in communication with at least one other computing device via a communications network. The computing device has a memory and a central processing unit having a trusted execution environment comprising trusted regions of the memory. The computing device has an operating system configured to create a memory mapping between a virtual address space of the memory and a memory of the at least one other computing device and to provide details of the memory mapping to the trusted execution environment. The trusted execution environment is configured to execute an application which is able to communicate with the other computing device directly using the memory mapping provided by the operating system.

Side-channel protection

In various examples a compute node is described. The compute node has a central processing unit which implements a hardware transactional memory using at least one cache of the central processing unit. The compute node has a memory in communication with the central processing unit, the memory storing information comprising at least one of: code and data. The compute node has a processor which loads at least part of the information, from the memory into the cache. The processor executes transactions using the hardware transactional memory and at least the loaded information, such that the processor ensures that the loaded information remains in the cache until completion of the execution.

Compute node security

Methods for enforcing confidentiality and integrity of code and data while running the code over the data in a distributed computing system are described. In an embodiment each machine which processes data within the system provides a secure sub-system which is protected from other parts of the machine and which receives encrypted data and encrypted code, processes the data using the received code and outputs encrypted data. When establishing the secure sub-systems, keys are exchanged between the client and secure sub-systems and the secure sub-systems provide an attestation confirming the identity of the code running in the secure sub-systems and confirming that the code is running on genuine secure sub-systems. In another embodiment a data-flow computation system is described in which chunks of input data, each comprising an identifier, are authenticated/encrypted. The identifiers are used within the system to confirm that each chunk is processed exactly once.

Trusted execution within a distributed computing system

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Cambridge, United Kingdom

Felix Schuster