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US 9,747,982 B1Granted
Device and method for generating random numbers
AssigneeArm Limited
InventorsLucian Shifren, Robert Campbell Aitken
Life of this patent
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Abstract
According to an embodiment of the present disclosure, a device and a method are provided. The device includes one or more resistive random access memory (ReRAM) elements. The device further includes a random number generator configured to generate a random number in dependence on impedance values of the one or more ReRAM elements.
Claims14
A device comprising:
- one or more resistive random access memory (Re RAM) elements;
- a random number generator configured to generate a random number dependent on an impedance value of at least one ReRAM element of the one or more ReRAM elements;
- and
- a control circuit configured to provide a programming signal to the at least one ReRAM element of the one or more ReRAM elements to configure an impedance value of the at least one ReRAM element of the one or more ReRAM elements, wherein the control circuit is further configured to vary at least an amplitude of the programming signal or a pulse width of the programming signal, or a combination thereof, to alter a degree of randomness of impedance values of the one or more ReRAM elements.
1 more element
A method for generating random numbers, the method comprising:
- applying a programming signal to one or more resistive random access memory (ReRAM) elements;
- determining an impedance value of at least one of the one or more ReRAM elements;
- and
- generating a random number based on the determined impedance value of the at least one of the one or more ReRAM elements,
- wherein applying the programming signal comprises varying an amplitude of the programming signal or a pulse width of the programming signal, or a combination thereof, to alter a degree of randomness of impedance values of the one or more ReRAM elements.
2 more elements
Dependencies are inferred from the claim text.