Invention Grant
- Patent Title: Digital true random number generator based on S-boxes
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Application No.: US14741964Application Date: 2015-06-17
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Publication No.: US09891888B2Publication Date: 2018-02-13
- Inventor: Sebastien Riou
- Applicant: NXP B.V.
- Applicant Address: NL Eindhoven
- Assignee: NXP B.V.
- Current Assignee: NXP B.V.
- Current Assignee Address: NL Eindhoven
- Agent Rajeev Madnawat
- Main IPC: G06F7/58
- IPC: G06F7/58 ; H04L9/00

Abstract:
Various embodiments relate to a device including a digital component configured to output a plurality of parallel bits based on an input wherein the digital component is capable of occupying a metastable state between a time the input is changed and a time the output plurality of parallel bits changes based on the changed input, wherein the digital component outputs metastable bits while occupying the metastable state; and a synchronous sampling circuit configured to sample bits from the digital component in synchronization with a received clock signal pulse, wherein when the clock signal pulse occurs while the digital component occupies a metastable state, the synchronous sampling circuit samples metastable bits, and wherein the input into the digital component changes in a manner that is asynchronous with respect to the clock signal pulse. In various embodiments, the digital component is a substitution box (S-box).
Public/Granted literature
- US20160371059A1 DIGITAL TRUE RANDOM NUMBER GENERATOR BASED ON S-BOXES Public/Granted day:2016-12-22
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