{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11520878","patent":{"patent_number":"US-11520878","title":"Using a trusted execution environment for a proof-of-work key wrapping scheme that restricts execution based on device capabilities","assignee":null,"inventors":[],"filing_date":"2019-11-26T00:00:00.000Z","publication_date":"2022-12-06T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","G06F","G06F","H04L","H04L","H04L","H04L","H04L","H04L","G06F","G06F","G06F"],"num_claims":20,"abstract":"The technology disclosed herein provides a proof-of-work key wrapping system for verifying device capabilities. An example method may include: accessing a wrapped key and a cryptographic attribute for the wrapped key from an encrypted memory region, wherein the wrapped key encodes a cryptographic key; deriving, by a processing device, the cryptographic key in view of the wrapped key and the cryptographic attribute, wherein the deriving consumes computing resources for a duration of time; using the cryptographic key to access program data; and executing, by the processing device, the program data, wherein the executed program data evaluates a condition related to the duration of time."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Using a trusted execution environment for a proof-of-work key wrapping scheme that restricts execution based on device capabilities","description":"The technology disclosed herein provides a proof-of-work key wrapping system for verifying device capabilities. An example method may include: accessing a wrapped key and a cryptographic attribute for","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11520878","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-11520878","citation_suggestion":"Patentable. \"Using a trusted execution environment for a proof-of-work key wrapping scheme that restricts execution based on device capabilities\" (US-11520878). https://patentable.app/patents/US-11520878","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11520878","json":"https://patentable.app/api/llm-context/US-11520878","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T18:50:16.955Z"}