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AssigneeInternational Business Machines Corporation
InventorsShawn Peter Fetterolf, Arvind Kumar
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Crossbar arrays (e.g., Resistive Processing Unit (RPU) accelerators) are leveraged to create a Physically Unclonable Function (PUF) that exploits variations, such as statistical process variation in manufacture or operation, to generate key material to secure information in a computing environment. One environment is a cloud compute infrastructure whose shared resources are used to process workloads. During RPU accelerator use, the state of the RPU's bits are changed by reproducible inputs, e.g., stochastic pulses applied to change resistive values in the array, and the corresponding changes in the RPU array state captured. These responses, which cannot be reproduced from another device due to random device variations across chips that embody the RPUs, are then used to generate (or facilitate generation of) the cryptographic material. In one embodiment, inputs applied to the RPU accelerator array are generated from a pseudo-random number generator that is otherwise associated with the RPU accelerator.
A method to secure information in a compute environment having an accelerator configured as an array of Resistive Processing Units (RPUs), the accelerator being configured to perform a computation associated with an application, comprising:
Apparatus, comprising:
A computer program product in a non-transitory computer readable medium for use in a data processing system to secure information in a compute environment having an accelerator configured as an array of Resistive Processing Units (RPUs), the accelerator being configured to perform a computation associated with an application, the computer program product holding computer program instructions executed in the data processing system and configured to:
Dependencies are inferred from the claim text.