{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11271732","patent":{"patent_number":"US-11271732","title":"Robust repeatable entropy extraction from noisy source","assignee":null,"inventors":[],"filing_date":"2019-11-12T00:00:00.000Z","publication_date":"2022-03-08T00:00:00.000Z","cpc_codes":["H04L","G06F","H04L"],"num_claims":20,"abstract":"Various embodiments relate to a method for generating a bit stream in a physical unclonable function (PUF) system, including: receiving a set of values from a plurality of physical devices in the PUF system in a first order; sorting the set of values into a second order; for each of the L highest values, setting a corresponding levelTag value to a first bit value and setting a corresponding usageTag value to a first usage value that indicates that the levelTag for the corresponding value is to be used to generate the bit stream, wherein L is a level setting; for each of the L lowest values, setting a corresponding levelTag value to a second bit value and setting a corresponding usageTag value to the first usage value, wherein the first bit value is different from the second bit value; setting the usageTag value for all other values that are not the highest L values or the lowest L values to a second usage value that indicates that the corresponding value is not to be used to generate the bit stream; generating the bitstream as the levelTag values that have an associated usageTag value of the first usage value, wherein the levelTag values are ordered according to the first order."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Robust repeatable entropy extraction from noisy source","description":"Various embodiments relate to a method for generating a bit stream in a physical unclonable function (PUF) system, including: receiving a set of values from a plurality of physical devices in the PUF ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11271732","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-11271732","citation_suggestion":"Patentable. \"Robust repeatable entropy extraction from noisy source\" (US-11271732). https://patentable.app/patents/US-11271732","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11271732","json":"https://patentable.app/api/llm-context/US-11271732","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T19:51:22.764Z"}